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
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tsialex
Contributor
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
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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?
My understanding is that the X5690 is a "dual processor capable CPU" so I should be able to get 64gb. Is that correct?
tsialex
Contributor
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.
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
Contributor
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
macrumors 6502a
My 4,1 (not-yet flashed) has barcode J591000TZ1LUC on the tray. If I understand all the messages here correctly, that's the 10th week of '09, so it's the 130W-autodestructing kind. Pity. It's now housing dual X5550 and I'm looking at possibilities to upgrade the thing. The X5550s are 95W each, so I figure a delidded X5675 would work in a 4,1>5,1 flashed machine without too much trouble? Or am I missing something?
owbp
macrumors 6502a
You're spot on, X5675's are safe(est) bet.
I would use them in dual conf regardles of date of manufacture or model (2009-2012), since they draw 100W less, your mac stays cooler and fans make less noise.
And for 15 years old architecture the 400MHz difference will do nothing at all.
At lest it doesn't in my case (Avid Pro Tools, movie/tv mixing, dialogue editing with heavy cleanups etc).
I would use them in dual conf regardles of date of manufacture or model (2009-2012), since they draw 100W less, your mac stays cooler and fans make less noise.
And for 15 years old architecture the 400MHz difference will do nothing at all.
At lest it doesn't in my case (Avid Pro Tools, movie/tv mixing, dialogue editing with heavy cleanups etc).
tsialex
Contributor
Some of the very early Rev.A early-2009 dual CPU trays, like yours, do not accept high wattage Westmere Xeons, but a lot of peole had success with X5670/X5675. Test it, the X5675 pair is very inexpensive nowadays if you delid yourself.
Thanks for the confirmation! Yeah, I'm not going to do anything that special with the machine, it's more because it's fun to tinker with and the upgrades are (relatively) affordable. And yeah, I misspoke, I'll be using a pair of the CPUs if I do indeed go that route.
The pair indeed is pretty inexpensive, though I'm not too sure about delidding myself (me delidding the CPUs, that is. Not that I will be taking my own lid off, no.) I don't have a vice, so the most common method won't work for me.
I found someone in Germany who sells them by the pair delidded, for €48,90 ex shipping. Although, I could also get say 4 X5675s from AliExpress and combine it with a delidding tool. Including shipping, then I have 4 Xeons for the same price. I'll give it a thought.