MP All Models Mac Pro CPU Compatibility List

[poundman]

Can someone help me confirm what cpu tray I have, it is early rev. It is 2009 4,1 with 5,1 firmware. Currently have dual E5520 installed. Here is a pic of the tray with J5933003PW1LUE

 

[tsialex]

Can someone help me confirm what cpu tray I have, it is early rev. It is 2009 4,1 with 5,1 firmware. Currently have dual E5520 installed. Here is a pic of the tray with J5933003PW1LUE
View attachment 2345565

This is really simple and you can know it by yourself just looking the tray SN - third digit is the year, J593003PW1LUE, fourth and fifth are the week number, J593003PW1LUE.

So, being made after the week 23, it's not the original CPU tray revision that can't boot or autodestructs itself with 130W Xeons.

Edit: you typed the SN wrong, it's J593003PW1LUE and not J5933003PW1LUE

 

[weezin]

I'm slightly confused by how much ram I can put in my single-cpu X5690 5,1. Is it 64GB (4x16gb), or is it 48gb (3*16gb) as stated on OWC's site?

My understanding is that the X5690 is a "dual processor capable CPU" so I should be able to get 64gb. Is that correct?

 

[tsialex]

I'm slightly confused by how much ram I can put in my single-cpu X5690 5,1. Is it 64GB (4x16gb), or is it 48gb (3*16gb) as stated on OWC's site?

My understanding is that the X5690 is a "dual processor capable CPU" so I should be able to get 64gb. Is that correct?

Like already clearly explained in the first port of this thread, any X56xx Xeon can work with 4x16GB DIMMs when installed to a single CPU tray MacPro5,1 and 8x16GB when a pair is installed in a dual CPU tray, without any manual configuration/tweaks/etc.

 

[joevt]

I'm slightly confused by how much ram I can put in my single-cpu X5690 5,1. Is it 64GB (4x16gb), or is it 48gb (3*16gb) as stated on OWC's site?

My understanding is that the X5690 is a "dual processor capable CPU" so I should be able to get 64gb. Is that correct?

This post says triple channel is slightly faster but more RAM is probably better.
https://forums.macrumors.com/threads/some-questions-about-triple-channel-memory.1712968/

 

[splifingate]

I'm slightly confused by how much ram I can put in my single-cpu X5690 5,1. Is it 64GB (4x16gb), or is it 48gb (3*16gb) as stated on OWC's site?

My understanding is that the X5690 is a "dual processor capable CPU" so I should be able to get 64gb. Is that correct?

Bit of a tangent, but entirely apropos:

I purchased a low-power 'soft router' device direct from China last year, and it revolves around an Intel 12th-gen Alder Lake CPU (8 Gracemont Efficiency Cores).

The Intel i3-n305 has official support for 16GB of DDR5 RAM in single-channel.

I initially read that others were reporting that 32GB dimms were working just fine, but (since this platform only had one dimm slot) I wanted to maximize my effort.

Went-out on a limb, and purchased a 48GB dimm . . . it worked just fine

If 64GB dimm modules were available at the time, I would have tried that.

I guess what I mean to say, is that:

Specs are not always what they seem, and support is often more varied than what is stated.

Unless you are financially-constrained, there's noting stopping you from trying-out options that don't fit the Official Model <smile>

 

[macguru9999]

its 64