Ddr For Mac



In this page I am going to explain how to set up Dance Dance Revolution on your computer. You will need a dance mat of course, maybe a Playstation/USB adaptator, a software (actually, a game) and music tracks.

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The dance mat

Obviously the choice of the dance mat is very important for your in game enjoyment. This part of the website is the most questions inspiring, that is why I decided to deal with it on a dedicated page:
Rendez-vous on Dance mat reviews. Long story quick, the choice is wide with prices ranging from 15 euros to 600 euros. Beginners will most likely choose reinforced soft dance mats: they have inside them a foam layer which give them thickness, stability and damp. They are worth their 40 euros.
Old mats used to require a Playstation to USB adaptator. I have a section about that at the end of this page.

Softwares/games

The reference for Dance Dance Revolution on a computer is Stepmania.
Stepmania is an adaptation of the game DDR on PC and Mac, free, open source, and full of features. Stepmania is evolving days after days, and has a huge communauty of players. The modding possibilities of Stepmania are impressive: look of the game with alternative themes, original game modes (like the hilarious drunk option), announcer to comment on your dance, video clip and more.
Very strong point, with Stepmania you can play on a local network and even on the internet with a world ranking system, just like Starcraft and the likes!
There was a long period of mess with several competing versions of Stepmania, but the release of Stepmania 5 has well clarified the situation. This time people seems to drop the old 3.9 version and switch to this (excellent) Stepmania 5.
You can have several versions of Stepmania (or Stepmania and Dance with your Intensity) on your computer and make them share the same song library. A good way to save disk space!
Click the image below to go to my tutorial about Stepmania. You will find complete info on this software and set up tips, especially for network play.

The (vintage) alternative to Stepmania is Dance With Intensity.
I love this game because it is the one I started up with. DWI is almost as features full as Stepmania, the user interface is brilliant, the announcer is awesome. What I really miss in Stepmania is the profile handling, far superior in Dance With Intensity. Very useful if several dancers use the same computer and do not want to mix scores.
Unfortunately DWI project stopped long ago, thus it is the same game than in 2003. Since then Stepmania brought its high res graphics and multiplayer, making it the obvious choice.
If you do not care about high res, go on and give Dance With Intensity a shot. Click the picture to access my complete tutorial!

In addition to the freewares DWI and Stepmania, you can find commercial softs, like the In The Groove franchise. I know very little about it .. because I do not want to pay for it! The game is based on Stepmania, but adds several gameplay tricks like the mines, the rolls (similar to the freezes except you tap the arrow all along), the Hands (there are 3 or 4 arrows at a time thus you must use your hands).
Contrary to Stepmania and Dance with Intensity, In The Groove features a mix of songs you do not need to download on the web (after all, you paid for it). This is much like the games Dance Dance Revolution 1,2,3,.. you can buy on Playstation or play in arcade. You can not add others songs by yourself.
In The Groove was released on PC, arcade and PS2.

There is a new french player on the market called Yasd. They developped their own Stepmania clone, Feetness. This is sold for Windows, Mac and Linux at 35€ with (only) 15 playable titles. What can sell you on that option is that new titles are regularly offered for download on the website, you even get to choose the new titles through polls. Well, the songs are not offered, you pay for them.

For the sake of completeness I should talk a bit about Flash Flash Revolution which is a flash port of DDR. You play online on a website, and you can only use your keyboard, not mats. Frankly I do not see the point but you've got to satisfy everyone..
Similarly the Stepmania team has begun to test the concept of Stepmania micro which is played through a web browser with the keyboard. It is fun to see how it works, but here at DDR PC Gamer we will stay focus on dance mat playing.

Musics

Last but not least, the songs. A Dance Dance Revolution title is made of the musical file, which can be mp3 or ogg, and a text file describing the succession of arrows. The latest can be either .dwi or .sm, .dwi being accepted by both Stepmania and Dance With Intensity and .sm only by Stepmania.
In addition you can find pictures or even video clip to be displayed in the background during the play. The important thing is, all these elements must be gathered in one folder. More on that in my pages devoted to the softwares, and in the Create your DWIs section.

Stepmania and Dance With Intensity do not come with any song pre-installed; you've got to look for it on the web. To begin with, check my page Dance school out, I give a few titles direct download. Then you should head to the Links and build your collection. New titles are released every day, you can even do yours as I explain it here!!

TV and Hi-Fi outputs

Maybe you own a big TV screen you would like to use for your DDR session, or even an overhead projector with which you could set up huge DDR parties. Good idea! But watch the image/sound/mats synchro!! Most of the time it is a bad idea to use your TV for sound output: the sound signal would go through additional electronic circuits, being delayed in the process. Instead of hitting a Perfect timing, you would end up with mediocre Good.
That's a DDR golden rule: always choose the shortest route between your computer and your ears, so plug the speakers directly to your computer. Even sound cards processing like equalizing can sometimes induce a delay. Personally I own a Hi-fi receiver with HDMI input to process the sound coming from the PC and HDMI output to bring the video to the TV. Everything works nicely in this configuration. Previously I used the optical input (Toslink) which is fine too.
However, the newest versions of Stepmania lets you calibrate your audio sync so now you can make up for a not-so-perfect audio configuration. But the set up is not so easy. See Stepmania, 'calibrate audio sync'.

The adaptator (now deprecated)

Why an adaptator? A couple of years ago, most mats available were designed for the Playstation1/2. Purchasing a Playstation/USB adaptator was a must, but this is not the case anymore.
The dance mats deluxe ignition dance pad features in its 3in1 installment connectors you can directly plug into your PS2, Xbox or PC, then many mats followed this path. If you are equipping today for DDR, you should not worry about adaptators.

BEWARE! Lots of adaptators are on the market, but only one is well suited to dance mats: EMS USB 2, and you can plug two mats with it. According to the official website , other adaptators can work but I personally know only about the EMS.

Why this one? The trick is, directional arrows are dealt with as independent boutons, not as axis. Try to press simultaneously up and down with an axis.. does not work.

Where can I get it? On the web, as a (french) example on fl-games. Price is 16€50 plus shipping.

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How do I have it work? EMS USB2 needs a driver, download here. Just double click the exe to set it up.
Beware: There is a little swich on the adaptator, it MUST be on 'PC' and not on 'game' or else Windows is lost. Classical trap :D
Once the driver is set up, and the adaptator plugged, check in the setting panel, game controllers that 'axis 4 button 16 joypad' appears twice. If not, check the switch,plug/unplug, or reboot.

Choose your iMac model

If you're not sure which iMac you have, you can identify your iMac and then select it from the list below.

27-inch

24-inch

21.5-inch

  • iMac (Retina 4K, 21.5-inch, 2019)*
  • iMac (Retina 4K, 21.5-inch, 2017)*
  • iMac (21.5-inch, 2017)*
  • iMac (21.5 inch, Mid 2014)*
  • iMac (21.5-inch, Late 2013)*
  • iMac (21.5-inch, Late 2012)*

20-inch

17-inch

* Memory is not removable by users on iMac (21.5-inch, Late 2012), iMac (21.5-inch, Late 2013), iMac (21.5-inch, Mid 2014), iMac (21.5-inch, 2017), iMac (Retina 4K, 21.5-inch, 2017), and iMac (Retina 4K, 21.5-inch, 2019). If the memory in one of these computers needs repair service, contact an Apple Retail Store or Apple Authorized Service Provider. If you’d like to upgrade the memory in one of these models, an Apple Authorized Service Provider can help. Before you schedule an appointment, confirm that the specific Apple Authorized Service Provider offers memory upgrade services.

Memory in iMac (21.5-inch, Late 2015), and iMac (Retina 4K, 21.5-inch, Late 2015) is not upgradeable.

iMac (Retina 5K, 27-inch, 2020)

Teamviewer for mac 8. Get memory specifications for iMac (Retina 5K, 27-inch, 2020), then learn how to install memory in this model.

Memory specifications

This iMac model features Synchronous Dynamic Random-Access Memory (SDRAM) slots on the rear of the computer near the vents with these memory specifications:

Number of memory slots4
Base memory8GB (2 x 4GB DIMMs)
Maximum memory128GB (4 x 32GB DIMMs)

For optimal memory performance, DIMMs should be the same capacity, speed, and vendor. Use Small Outline Dual Inline Memory Modules (SO-DIMM) that meet all of these criteria:

  • PC4-21333
  • Unbuffered
  • Nonparity
  • 260-pin
  • 2666MHz DDR4 SDRAM

If you have mixed capacity DIMMs, see the install memory section for installation recommendations. Latest version itunes for mac.

iMac (Retina 5K, 27-inch, 2019)

Get memory specifications for iMac (Retina 5K, 27-inch, 2019), then learn how to install memory in this model.

Memory specifications

This iMac model features Synchronous Dynamic Random-Access Memory (SDRAM) slots on the rear of the computer near the vents with these memory specifications:

Number of memory slots4
Base memory8GB (2 x 4GB DIMMs)
Maximum memory64GB (4 x 16GB DIMMs)

Use Small Outline Dual Inline Memory Modules (SO-DIMM) that meet all of these criteria:

  • PC4-21333
  • Unbuffered
  • Nonparity
  • 260-pin
  • 2666MHz DDR4 SDRAM

iMac (Retina 5K, 27-inch, 2017)

Get memory specifications for iMac (Retina 5K, 27-inch, 2017), then learn how to install memory in this model.

Memory specifications

This iMac model features Synchronous Dynamic Random-Access Memory (SDRAM) slots on the rear of the computer near the vents with these memory specifications:

Number of memory slots4
Base memory8GB (2 x 4GB DIMMs)
Maximum memory64GB (4 x 16GB DIMMs)

Use Small Outline Dual Inline Memory Modules (SO-DIMM) that meet all of these criteria:

  • PC4-2400 (19200)
  • Unbuffered
  • Nonparity
  • 260-pin
  • 2400MHz DDR4 SDRAM

iMac (Retina 5K, 27-inch, Late 2015)

Get memory specifications for iMac (Retina 5K, 27-inch, Late 2015), then learn how to install memory in this model.

Memory specifications

This iMac model features Synchronous Dynamic Random-Access Memory (SDRAM) slots on the rear of the computer near the vents with these memory specifications:

Number of memory slots4
Base memory8GB
Maximum memory32GB

Use Small Outline Dual Inline Memory Modules (SO-DIMM) that meet all of these criteria:

  • PC3-14900
  • Unbuffered
  • Nonparity
  • 204-pin
  • 1867MHz DDR3 SDRAM

For these 27-inch models

Get memory specifications for the following iMac models, then learn how to install memory in them:

  • iMac (Retina 5K, 27-inch, Mid 2015)
  • iMac (Retina 5K, 27-inch, Late 2014)
  • iMac (27-inch, Late 2013)
  • iMac (27-inch, Late 2012)

Memory specifications

These iMac models feature Synchronous Dynamic Random-Access Memory (SDRAM) slots on the rear of the computer near the vents with these memory specifications:

Number of memory slots4
Base memory8GB
Maximum memory32GB

Use Small Outline Dual Inline Memory Modules (SO-DIMM) that meet all of these criteria:

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  • PC3-12800
  • Unbuffered
  • Nonparity
  • 204-pin
  • 1600MHz DDR3 SDRAM

Installing memory

The internal components of your iMac can be warm. If you've been using your iMac, wait ten minutes after shutting it down to let the internal components cool.

After you shut down your iMac and give it time to cool, follow these steps:

  1. Disconnect the power cord and all other cables from your computer.
  2. Place a soft, clean towel or cloth on the desk or other flat surface to prevent scratching the display.
  3. Hold the sides of the computer and slowly lay the computer face-down on the towel or cloth.
  4. Open the memory compartment door by pressing the small grey button located just above the AC power port:
  5. The memory compartment door will open as the button is pushed in. Remove the compartment door and set it aside:
  6. A diagram on the underside of the compartment door shows the memory cage levers and the orientation of the DIMM. Locate the two levers on the right and left sides of the memory cage. Push the two levers outward to release the memory cage:
  7. After the memory cage is released, pull the memory cage levers toward you, allowing access to each DIMM slot.
  8. Remove a DIMM by pulling the module straight up and out. Note the location of the notch on the bottom of the DIMM. When reinstalling DIMMs, the notch must be oriented correctly or the DIMM won't fully insert:
  9. Replace or install a DIMM by setting it down into the slot and pressing firmly until you feel the DIMM click into the slot. When you insert a DIMM, make sure to align the notch on the DIMM to the DIMM slot. Find your model below for specific installation instructions and notch locations:
    • iMac (Retina 5K, 27-inch, 2020) DIMMs have a notch on the bottom, slightly left of the middle. If your DIMMs are mixed in capacity, minimize the capacity difference between Channel A (slots 1 and 2) and Channel B (slots 3 and 4) when possible.
    • iMac (Retina 5K, 27-inch, 2019) DIMMs have a notch on the bottom, slightly left of the middle:
    • iMac (27-inch, Late 2012) and iMac (Retina 5K, 27-inch, 2017) DIMMs have a notch on the bottom left:
    • iMac (27-inch, Late 2013) and iMac (Retina 5K, 27-inch, Late 2014, Mid 2015, and Late 2015) DIMMs have a notch on the bottom right:
  10. After you install all of your DIMMs, push both memory cage levers back into the housing until they lock into place:
  11. Replace the memory compartment door. You don't need to press the compartment door release button when replacing the compartment door.
  12. Place the computer in its upright position. Reconnect the power cord and all other cables to the computer, then start up the computer.

Your iMac performs a memory initialization procedure when you first turn it on after upgrading memory or rearranging DIMMs. This process can take 30 seconds or more, and the display of your iMac remains dark until it's finished. Make sure to let the memory initialization complete.

For these 27-inch and 21.5-inch models

Get memory specifications for the following iMac models, then learn how to install memory in them:

  • iMac (27-inch, Mid 2011)
  • iMac (21.5-inch, Mid 2011)
  • iMac (27-inch, Mid 2010)
  • iMac (21.5-inch, Mid 2010)
  • iMac (27-inch, Late 2009)
  • iMac (21.5-inch, Late 2009)

Memory specifications

Number of memory slots4
Base memory4GB (but is configured to order)
Maximum memory16GB
For iMac (Late 2009), you can use 2GB or 4GB RAM SO-DIMMs of 1066MHz DDR3 SDRAM in each slot. For iMac (Mid 2010) and iMac (Mid 2011), use 2GB or 4GB RAM SO-DIMMs of 1333MHz DDR3 SDRAM in each slot.

Use Small Outline Dual Inline Memory Modules (SO-DIMM) that meet all of these criteria:

iMac (Mid 2011)iMac (Mid 2010)iMac (Late 2009)
PC3-10600PC3-10600PC3-8500
UnbufferedUnbufferedUnbuffered
NonparityNonparityNonparity
204-pin204-pin204-pin
1333MHz DDR3 SDRAM1333MHz DDR3 SDRAM1066MHz DDR3 SDRAM

i5 and i7 Quad Core iMac computers come with both top memory slots populated. These computers will not start up if only a single DIMM is installed in any bottom slot; these computers should operate normally with a single DIMM installed in any top slot.

Core Duo iMac computers should operate normally with a single DIMM installed in any slot, top or bottom. ('Top' and 'bottom' slots refer to the orientation of the slots in the pictures below. 'Top' refers to the slots closest to the display; 'bottom' refers to the slots closest to the stand.)

Installing memory

The internal components of your iMac can be warm. If you've been using your iMac, wait ten minutes after shutting it down to let the internal components cool.

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After you shut down your iMac and give it time to cool, follow these steps:

  1. Disconnect the power cord and all other cables from your computer.
  2. Place a soft, clean towel or cloth on the desk or other flat surface to prevent scratching the display.
  3. Hold the sides of the computer and slowly lay the computer face-down on the towel or cloth.
  4. Using a Philips screwdriver, remove the RAM access door in the bottom of your computer:
  5. Remove the access door and set it aside.
  6. Untuck the tab in the memory compartment. If you're replacing a memory module, gently pull the tab to eject any installed memory module:
  7. Insert your new or replacement SO-DIMM into the empty slot, noting the orientation of the keyway of the SO-DIMM as shown below.
  8. After you insert it, press the DIMM up into the slot. There should be a slight click when you seat the memory correctly:
  9. Tuck the tabs above the memory DIMMs, and reinstall the memory access door:
  10. Place the computer in its upright position. Reconnect the power cord and all other cables to the computer, then start up the computer.

For these 24-inch and 20-inch models

Get memory specifications for the following iMac models, then learn how to install memory in them:

  • iMac (24-inch, Early 2009)
  • iMac (20-inch, Early 2009)
  • iMac (24-inch, Early 2008)
  • iMac (20-inch, Early 2008)
  • iMac (24-inch Mid 2007)
  • iMac (20-inch, Mid 2007)

Memory specifications

These iMac computers have two side-by-side Synchronous Dynamic Random-Access Memory (SDRAM) slots in the bottom of the computer.

The maximum amount of random-access memory (RAM) you can install in each computer is:

ComputerMemory TypeMaximum Memory
iMac (Mid 2007)DDR24GB (2x2GB)
iMac (Early 2008)DDR24GB (2x2GB)
iMac (Early 2009)DDR38GB (2x4GB)

You can use a 1GB or 2GB RAM module in each slot for iMac (Mid 2007) and iMac (Early 2008). Use 1GB, 2GB, or 4GB modules in each slot for the iMac (Early 2009).

Use Small Outline Dual Inline Memory Modules (SO-DIMM) that meet all of these criteria:

iMac (Mid 2007)iMac (Early 2008)iMac (Early 2009)
PC2-5300PC2-6400PC3-8500
UnbufferedUnbufferedUnbuffered
NonparityNonparityNonparity
200-pin200-pin204-pin
667MHz DDR2 SDRAM800MHz DDR2 SDRAM1066MHz DDR3 SDRAM

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DIMMs with any of the following features aren't supported:

  • Registers or buffers
  • PLLs
  • Error-correcting code (ECC)
  • Parity
  • Extended data out (EDO) RAM

Installing memory

The internal components of your iMac can be warm. If you've been using your iMac, wait ten minutes after shutting it down to let the internal components cool.

After your iMac cools down, follow these steps:

  1. Disconnect the power cord and all other cables from your computer.
  2. Place a soft, clean towel or cloth on the desk or other flat surface to prevent scratching the display.
  3. Hold the sides of the computer and slowly lay the computer face-down on the towel or cloth.
  4. Using a Philips screwdriver, remove the RAM access door in the bottom of the computer:
  5. Remove the access door and set it aside.
  6. Untuck the tab in the memory compartment. If you're replacing a memory module, untuck the tab and pull it to eject any installed memory module:
  7. Insert your new or replacement RAM SO-DIMM into the empty slot, noting the orientation of the keyway of the SO-DIMM as shown above.
  8. After you insert it, press the DIMM up into the slot. There should be a slight click when you seat the memory correctly.
  9. Tuck the tabs above the memory DIMMs, and reinstall the memory access door:
  10. Place the computer in its upright position. Reconnect the power cord and all other cables to the computer, then start up the computer.

For these 20-inch and 17-inch models

Get memory specifications for the following iMac models, then learn how to install memory in them:

  • iMac (20-inch Late 2006)
  • iMac (17-inch, Late 2006 CD)
  • iMac (17-inch, Late 2006)
  • iMac (17-inch, Mid 2006)
  • iMac (20-inch, Early 2006)
  • iMac (17-inch, Early 2006)

Memory specifications

Number of memory slots2
Base memory1GBTwo 512MB DIMMs; one in each of the memory slotsiMac (Late 2006)
512MBOne DDR2 SDRAM installed into the top slotiMac (17-inch Late 2006 CD)
512MBTwo 256MB DIMMs; one in each of the memory slotsiMac (Mid 2006)
512MBOne DDR2 SDRAM installed into the top slotiMac (Early 2006)
Maximum memory4GB2 GB SO-DIMM in each of the two slots*iMac (Late 2006)
2GB1GB SO-DIMM in each of the two slotsiMac (17-inch Late 2006 CD)
iMac (Early 2006)
Memory card specificationsCompatible:
- Small Outline Dual Inline Memory Module (DDR SO-DIMM) format
- PC2-5300
- Nonparity
- 200-pin
- 667 MHz
- DDR3 SDRAM
Not compatible:
- Registers or buffers
- PLLs
- ECC
- Parity
- EDO RAM

For best performance, fill both memory slots, installing an equal memory module in each slot.
*iMac (Late 2006) uses a maximum of 3 GB of RAM.

Installing memory in the bottom slot

The internal components of your iMac can be warm. If you've been using your iMac, wait ten minutes after shutting it down to let the internal components cool.

After you shut down your iMac and give it time to cool, follow these steps:

  1. Disconnect the power cord and all other cables from your computer.
  2. Place a soft, clean towel or cloth on the desk or other flat surface to prevent scratching the display.
  3. Hold the sides of the computer and slowly lay the computer face-down on the towel or cloth.
  4. Using a Phillips screwdriver, remove the RAM access door on the bottom of the iMac and set it aside:
  5. Move the DIMM ejector clips to their fully open position:
  6. Insert your RAM SO-DIMM into the bottom slot, keeping in mind the orientation of the keyed SO-DIMM:
  7. After you insert it, press the DIMM up into the slot with your thumbs. Don't use the DIMM ejector clips to push in the DIMM, as this might damage the SDRAM DIMM. There should be a slight click when you seat the memory fully.
  8. Close the ejector clips:
  9. Reinstall the memory access door:
  10. Place the computer in its upright position. Reconnect the power cord and all other cables to the computer, then start up the computer.

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Replacing memory in the top slot

After you shut down your iMac and give it time to cool, follow these steps:

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  1. Disconnect the power cord and all other cables from your computer.
  2. Place a soft, clean towel or cloth on the desk or other flat surface to prevent scratching the display.
  3. Hold the sides of the computer and slowly lay the computer face-down on the towel or cloth.
  4. Using a Phillips screwdriver, remove the RAM access door on the bottom of the iMac and set it aside:
  5. Pull the two levers on each side of the memory compartment to eject the memory module that's already installed:
  6. Remove the memory module from your iMac as shown below:
  7. Insert your RAM SO-DIMM into the top slot, noting the orientation of the keyed SO-DIMM:
  8. After you insert it, press the DIMM up into the slot with your thumbs. Don't use the DIMM ejector clips to push in the DIMM, as this might damage the SDRAM DIMM. There should be a slight click when you seat the memory fully.
  9. Close the ejector clips:
  10. Reinstall the memory access door:
  11. Place the computer in its upright position. Reconnect the power cord and all other cables to the computer, then start up the computer.

If your iMac makes a tone after you install memory

iMac models introduced before 2017 might make a warning sound when you start up after installing or replacing memory:

  • One tone, repeating every five seconds signals that no RAM is installed.
  • Three successive tones, then a five-second pause (repeating) signals that RAM doesn't pass a data integrity check.

If you hear these tones, confirm that the memory you installed is compatible with your iMac and that it's installed correctly by reseating the memory. If your Mac continues to make the tone, contact Apple Support.

Confirm that your iMac recognizes its new memory

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After you install memory, you should confirm that your iMac recognizes the new RAM by choosing Apple () menu > About This Mac.

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The window that appears lists the total memory, including the amount of memory that originally came with the computer plus the newly added memory. If all the memory in the iMac has been replaced, it lists the new total of all installed RAM.

For detailed information about the memory installed in your iMac, click System Report. Then choose Memory under the Hardware section in the left side of System Information.

If your computer doesn't recognize the memory or doesn't start up correctly, confirm that the RAM you installed is compatible with your iMac and that it's installed correctly by reseating the memory. If you continue to have issues with the memory in your iMac, contact Apple Support.