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The expected arrival date on my eBay X5690 is August 22, fml.

What!?! That's almost 2 months away! Wasn't there a quicker option?
[doublepost=1561689564][/doublepost]Just did a few Geekbench and Cinebench comparisons between a few of the single CPU Xeons in a 5,1 (flashed 4,1).

X5650 (2.66ghz x 6 cores)
Cost: $9
Single Core: 2732
Multi Core: 13315
Cinebench R20: 1396
https://browser.geekbench.com/v4/cpu/13617775

X5677 (3.46ghz x 4 cores)
Cost: $15
Single Core: 3262
Multi Core: 11829
Cinebench R20: 1167
https://browser.geekbench.com/v4/cpu/13693564

X5675 (3.06ghz x 6 cores)
Cost: $25
Single Core: 3050
Multi Core: 14323
Cinebench R20: 1540
https://browser.geekbench.com/v4/cpu/13694487

The only better CPUs for the 4,1 and 5,1 Mac Pro are the X5680 and X5690... which are at least double or quadruple the price vs what I've benchmarked. I'll leave it up to the end user to decide if its worth a few hundred points on Geekbench or Cinebench vs the cost of the X5680/X5690.

EDIT: Just purchased a X5680 for testing... here are the results:

X5680 (3.33ghz x 6 cores)
Cost: $45
Single Core: 3152
Multi Core: 15143
Cinebench: 1681
https://browser.geekbench.com/v4/cpu/13853778

Looking at it on paper, it would seem the higher base clock would result in a measurable performance gain. However, in both benchmarks (done multiple times, the highest scores are listed), the X5680 only gained around a 6% improvement (and only a 3% improvement in single core scores). Perhaps this is because the X5675 turbo boost at a higher rate (+400mhz, totaling 3.46ghz) than the X5680 (+270mhz totaling 3.60ghz). Either way, for a nearly 100% increase in price, I cannot really recommend purchasing a X5680 over the X5675. 3.06ghz seems to be the sweet spot for these 4,1/5,1 Mac Pros.
 
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Hi, I bought 4 x 32 GB Ramm for my Mac Pro 5,1, 2 x 3,46 GHz, Boot_rom: 140.0.0.0, Ram Config: Samsung 32GB 4Rx4 PC3L - 10600L-09-11-CO, but it doesn't work? Any recommendations, thx?
 
Hi, I bought 4 x 32 GB Ramm for my Mac Pro 5,1, 2 x 3,46 GHz, Boot_rom: 140.0.0.0, Ram Config: Samsung 32GB 4Rx4 PC3L - 10600L-09-11-CO, but it doesn't work? Any recommendations, thx?
Is it ECC? Also try booting with only one stick.
 
Not possible have a Vega 56 and M.2 Samsung Pro 1 TB hard disk, but interesting thread, thx

Then unless you give up macOS, and move to Windows / Linux, there is nothing you can do. All tests show that 32GB DIMM doesn't work in Mojave.
 
Is it ECC? Also try booting with only one stick.
Yes it's ECC registered. Now I erased VPRAM, tried it with only one stick too and double, but it doesn't start.
[doublepost=1562342637][/doublepost]
Then unless you give up macOS, and move to Windows / Linux, there is nothing you can do. All tests show that 32GB DIMM doesn't work in Mojave.
Ok, thanks, bad news and with Catalina nothing will change too. So I will return it.
[doublepost=1562342959][/doublepost]I've the Boot-Rom 140.0000 on my MacPro with Mojave 10.14.5, I read that somebody has 144.00000. What I have to do to go to 144.0000? Have to upgrade with my old SATA HD and the old original Apple GPU? I'm asking, because for my MacBook Pro 2015 with Samsung M.2 Pro I can only upgrade the Boot-Rom with the original Apple SSD and afterwards I have to rebuilt the Samsung.
 
I don't know if anyone's posted this but the
"Harpertown 4 core Dual Xeon X5460 SLANP 3.16 667 120W" absolutely works fine on my Xserve2,1 ( I don't have a second temp sensor so the fans max out but it boots into El Cap and Mavericks fine.)
 
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has anyone bought Xeon 5365 pairs (MP1,1) that are on ebay from China or HK?
Any issues?
 
I bought my X5365 pair from eBay (shipped from China) which turned out to be SLAED and work great in an XServe1,1, which is similar to MacPro1,1.
 
w3680 or X5680
my brain is already boiling and burning
I do not know what to choose for my single socket cMP 2010
‍♂️
 
For single processor use, no real difference, except for this: max memory. X5680 supports 64GB, W3580 supports 56GB.

Aside from that, the X5680 may be more available/cheaper, depending on your market. Virtusally all of them are used, but they were built like tanks.
 
X5690 has a higher clock, but those CPUs are ridiculously overpriced... X5680 would be a better option as they're cheaper. exactly what kohlson had advised....

For single processor use, no real difference, except for this: max memory. X5680 supports 64GB, W3580 supports 56GB.
Aside from that, the X5680 may be more available/cheaper, depending on your market. Virtusally all of them are used, but they were built like tanks.


The difference between the Chinese in Ali of 8-10$ between W and X
it seems to me that W is colder and more popular among window users (because is the multiplier unlocked?)
and there will be only 32 gb RAM and single processor
I think all the same X
thank you gentlemen
 
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So this never arrived, does anyone have a recommendation for a reliable eBay seller?
I've bought from both Keystone Memory Group LLC, and cp*group on Ebay with success. They're both located in the US, so shipping times are quick. They will be a little more expensive than their Chinese located counterparts, but I'll gladly pay the difference for my CPU arriving within a few days of the auction ending rather than a few weeks.
 
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my precious has arrived (X5680). change on Monday
IMG_5271.JPG
 
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