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Anyone tried to put 2 Xeon X5675's in a Mac Pro?

M

m0nastic

macrumors newbie
Original poster
Mar 19, 2010
6
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I'm surprised that I haven't been able to turn up anyone mentioning this, but I was planning on picking up an 8-core very soon (like within a week or two), and from what I can tell, I don't see why I wouldn't be able to buy two X5675's to swap the CPU's with.

They're still pretty steep right now, but I figure that by the time I actually can make use of the extra oomph, the X5675's should be cheaper.

I can't seem to find any reason why they wouldn't be able to be swapped (same socket, same power usage), but maybe someone else knows something I don't?
 
There is no technical reason why they won't work. The reasons you haven't seen any one try it is only a few people upgrade processors, fewer post on here about it, X5675s are only 3 weeks old and if you shop around (eBay) you can get X5680s for the same price due to them having been around a lot longer. It is certainly a decent upgrade path.
 
X5675 seems to be exactly the same chip as X5670, it just has one extra CPU multiplier. Even the stepping is the same (B1). It will work.

Umbongo said:
you can get X5680s for the same price due to them having been around a lot longer.
Click to expand...

But X5680 has TDP of 130W while X5675 has TDP of 95W. X5680 will definitely work, that's for sure, but due to the higher TDP, it may require more cooling, i.e. more fan noise.
 
Yeah, thanks. The X5675 seems to be the highest end Xeon that's still 95W, so I figured it would be the most seamless one to use.

I figure by the time I feel the need to go from 8 to 12 cores, the Sandy Bridge Xeon's will be out, and therefor the X5675's should come down in price.

Hellhammer said:
X5675 seems to be exactly the same chip as X5670, it just has one extra CPU multiplier. Even the stepping is the same (B1). It will work.



But X5680 has TDP of 130W while X5675 has TDP of 95W. X5680 will definitely work, that's for sure, but due to the higher TDP, it may require more cooling, i.e. more fan noise.
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Why on earth this thread was resuscitated today, almost 9 years later?
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sorry if I was wrong, I just wanted to ask for info

I'm just a new user
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my english is not good because i am using google translator sorry
 
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hello tsalex and thanks again the question was: I purchased a mac pro 5.1 mid 2010 2 x 2.4 ghz with 32 gb of 1066ghz ram, and I would like to change the 2 cpus with something better like the x5675 and I was wondering if there is a particular acronym (type x 5690 slbvx) since I have to buy on ebay and I wouldn't want to make a mistake :) over all I have seen videos and it does not seem difficult to do, only I would not like to run into bios updates, firmware, etc.
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the point is, I just have to open and replace and the mac starts up without problems or will I have to update it? and the x5675 code is slbvx to be searched on ebay?
 
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Mad Kat said:
hello tsalex and thanks again the question was: I purchased a mac pro 5.1 mid 2010 2 x 2.4 ghz with 32 gb of 1066ghz ram, and I would like to change the 2 cpus with something better like the x5675 and I was wondering if there is a particular acronym (type x 5690 slbvx) since I have to buy on ebay and I wouldn't want to make a mistake :) over all I have seen videos and it does not seem difficult to do, only I would not like to run into bios updates, firmware, etc.
Click to expand...
You can use any supported processor from the list compiled in this post Mac Pro CPU Compatibility List.

X5690 is the fastest Xeon supported with MP5,1 and only has one S-Spec, SLBVX. Please note that X5680 usually costs half than X5690 price and it's just ~3% slower.

For firmware updates, read carefully this first post MP5,1: What you have to do to upgrade to Mojave (BootROM upgrade instructions thread), there are several pitfalls with MP5,1 firmware upgrades and you need to get everything right to upgrade the BootROM successfully.
 
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I would be tempted to take a x5680 or x5690 but the consumption of 130w is too many, while with x5675 it is only 95W compared to the 80w of the current e5645 not so much in medium and full work but in office - web use
 
Mad Kat said:
I would be tempted to take a x5680 or x5690 but the consumption of 130w is too many, while with x5675 it is only 95W compared to the 80w of the current e5645 not so much in medium and full work but in office - web use
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130W is the maximum power usage, not the normal one. You will use 130W only when in totally full CPU usage, like when you are converting videos. When not using the CPU flat out, X5690 will use the same power as a X5675.
 
and if I stayed with high sierra, do I still need to update the firmware, or should I just install and start up?
 
Mad Kat said:
and if I stayed with high sierra, do I still need to update the firmware, or should I just install and start up?
Click to expand...
Don't use ancient BootROM versions with Mac Pros, always try to use the current one, even if you need to borrow a GPU to do the firmware upgrade.

144.0.0.0.0.0 is the current one, from 10.14.5 and 10.14.6 Mac App Store full Mojave installers.
 
indicatively how can I know how much consumes while I use a monitor with double - triple window for web, office, mail and itunes ....

question a little silly mine :)
 
Mad Kat said:
indicatively how can I know how much consumes while I use a monitor with double - triple window for web, office, mail and itunes ....

question a little silly mine :)
Click to expand...
With low CPU usage, a dual X5680 will have a power consumption of around 120 to 130W - for the complete system.
 
so double x5680 130w fully loaded processor would be 260w .. if I did the math well

added then to 34 monitors, hdd for a total of 8tb and 32 ram to bring to 64 .. I would even write at 400-500w
 
Mad Kat said:
so double x5680 130w fully loaded processor would be 260w .. if I did the math well

added then to 34 monitors, hdd for a total of 8tb and 32 ram to bring to 64 .. I would even write at 400-500w
Click to expand...
No, you are mixing TDP maximum power consumption with normal usage. Modern processors only use the power they need, only use the TDP spec when with full CPU usage.

A complete dual Mac Pro will use 120 to 130W when with low CPU usage.
 
sorry if it takes me a little to respond, it's that I have to jump from chrome with the app in dark mode and app translation page (so I read the posts that are in white) then I have to write and translate my question into google translator, to then copy it on safari with writing in black .... a business :)
 
Mad Kat said:
sorry if it takes me a little to respond, it's that I have to jump from chrome with the app in dark mode and app translation page (so I read the posts that are in white) then I have to write and translate my question into google translator, to then copy it on safari with writing in black .... a business :)
Click to expand...
I'm repeating myself, re-read what I wrote since you seems to not understand what is TDP.
 
the tdp ... I don't know

I would also have a problem related to the ram (I had opened posts about it)

I did geekbenk scanning and I posted some pictures, but it seems that I don't read the total ram well, and I don't understand if it is because it is mixed of various brands and maybe even installed not properly, or as if a processor is not working (not bad in the case since I have to replace them)
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Mad Kat said:
the tdp ... I don't know

I would also have a problem related to the ram (I had opened posts about it)

I did geekbenk scanning and I posted some pictures, but it seems that I don't read the total ram well, and I don't understand if it is because it is mixed of various brands and maybe even installed not properly, or as if a processor is not working (not bad in the case since I have to replace them)
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Click to expand...
TDP is the maximum power dissipation, the maximum power consumption that a CPU can use. A X5680/X5690 will only use 130W when with full CPU usage. Most of the time, it will use a fraction of the TDP. For a low CPU usage, won't matter if it's X5675 or X5690, it will use around the same power.

I can't help you with your RAM problems, go to this thread cMP & nMP {MacPro 4,1 & 5,1} Memory Upgrade Compatibility and FAQ read it and then ask help.
 
Thank you very much for helping tsialex;)

so at this point if the watts only change to maximum use among the 3 versions of cpu that I was looking at (x5675, x5680, x5690) and remain more or less at the same point in the average usage, I should bet on a pair of 3.33 ghz or better 3.46 ghz since at maximum use we are at 130 w and not 130w x 2 cpu = 260w,

at that point a 3.46 ghz is better, even compared to a 3.06 ghz, given that in mixed use but not in full, they consume equal
 
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