Only 64GB Ram in New Mac Pro?

Trailermen,

If you're getting no or less than satisfactory answers it likely wouldn't be a waste of time to go to Other World Computing (specifically, http://eshop.macsales.com/shop/memory/Mac-Pro-Memory ) and check through what they are up-to-date with. I've never been dissatistfied with them in any way. I'm very confident you'll find your answer there.

My best,

George

Mac Pro, Mac OS X (10.7.5)

New memory efficiency is suppose to be part of 10.9.

Apple always has specs at the time of release. Even when higher density DIMMs come out.

So it is likely that there could be 32GB DIMMs, but they aren't available today.

Never try to understand why when it comes to Apple, just throw salt over your shoulder (there is the right way, the wrong way, and the Army's way as they said when I was growing up and in boot camp).

There are 32GB DDR3 DIMMS available now. They're running just under US $800 each as of this moment. I can't imagine they wouldn't be supported in the new Mac Pro, but until it's confirmed I wouldn't guarantee it.

Regards.

Didn't know they were out of engineering and testing. Price wise new memory always has that sticker shock, whether it was the summer of 2003 and new PowerMac G5 DDR2 that was going for $100+ for a 512MB DIMM.

When Crucial didn't have their own they turn to Samsung.

LIke you I am having a lot of trouble finding any. Time to turn to hardware review sites probably.

http://www.crucial.com/store/partspecs.aspx?IMODULE=CT32G3ERSLQ41067

http://www.crucial.com/store/partspecs.aspx?IMODULE=CT32G3ELSLQ41339

Which, if either, would be compatible with the new Mac Pro I can't say since I can't find official memory specs for the MP yet.

Regards.

RAM spec 6,1 as I call it 2013 is DDR3 1866MHz. These are old style for Nehalem 5500/3500 and not even Westmere

• Module Size: 32GB
• Package: 240-pin DIMM
• Feature: DDR3 PC3-8500
• Specs: DDR3 PC3-8500 • CL=7 • Quad Ranked • x4 based • Registered • ECC • DDR3-1066 • 1.35V • 4096Meg x 72 •

Looks like "backward compatible" is probably okay according to Intel.

http://ark.intel.com/products/75268/Intel-Xeon-Processor-E5-2643-v2-25M-Cache-3_ 50-GHz

Apple is slow (as in never) known to update the specs page when it comes to RAM, storage.

More likely up to Crucial, Samsung and others, even OWC, as to whether their DIMMs are compatible.

In some PC's today that do use higher frequency memory they will not work with slower than say 1600MHz, and PCs today are pushing beyond 2000GHz.

I was just curious that someone would even think those Crucial/Micron DIMMs might.

http://www.apple.com/support/macpro doesn't even list the 2013 yet.

Apple seems to be betting the farm on new 10.9 memory compression core technology - solving the abuse and excess use of memory seen in Mountain Lion helps. My experience even on Mac Pro but running Windows 84-bit (7/8/8.1) is they make good use and still cache and use free available memory. Otherwise, HP or Dell workstations with 256GB or even TB for those that don't want to be so crippled and limited.

Compressed Memory keeps your Mac fast and responsive by freeing up memory when you need it most. When your system’s memory begins to fill up, Compressed Memory automatically compresses the least recently used items in memory, compacting them to about half their original size. When these items are needed again, they can be instantly uncompressed.

Compressed Memory improves total system bandwidth and responsiveness, allowing your Mac to handle large amounts of data more efficiently.Through use of the dictionarybased WKdm algorithm, compression and decompression are faster than reading and writing to disk. If your Mac needs to swap files on disk, compressed objects are stored in full-size segments, which improvesread/write efficiency and reduces wear and tear on SSD and flash drives.

The advantages of Compressed Memory include the following:

• Shrinks memory usage.Compressed Memory reduces the size of items in memory that haven’t been used recently by more than 50 percent, freeing memory for the applications you are currently using.

• Improves power efficiency. Compressed Memory reduces the need to read and write virtual memory swap files on disk, improving the power efficiency of your Mac.

• Minimizes CPU usage. Compressed Memory is incredibly fast, compressing or decompressing a page of memory in just a few millionths of a second.

• Is multicore aware. Unlike traditional virtual memory, Compressed Memory can run in parallel on multiple CPU cores, achieving lightning-fast performance for both reclaiming unused memory and accessing seldom-used objects in memory.

OS X Mavericks 10.9

June 2013Core Technologies Overview 2

http://images.apple.com/osx/preview/

http://images.apple.com/osx/preview/docs/OSX_Mavericks_Core_Technology_Overview. pdf

This may be a better link to the core technologies document:

http://images.apple.com/media/us/osx/2013/docs/OSX_Mavericks_Core_Technology_Ove rview.pdf

Which includes on page 6:

Kernel

The OS X kernel is based on FreeBSD and Mach 3.0 and features an extensible architec- ture based on well-defined kernel programming interfaces (KPIs).

OS X was the first operating system to ship as a single install that could boot into either a 32-bit or 64-bit kernel, either of which could run 32-bit and 64-bit applications at full native performance. OS X now exclusively uses a 64-bit kernel, but it continues to run both 32-bit and 64-bit applications.

With its 64-bit kernel, OS X is able to address large amounts of physical RAM. OS X Mavericks has been tested to support up to 128GB of physical RAM on qualified Mac computers.

I realize that is not definitive, but is encouraging.

.