MP 7,1 Mac pro 7,1 throttling W-3275 QS

[someuserxsvr]

Just got "Intel Xeon W-3275 QS CPU 2.5 GHz" and when run on windows cpu-z stress it get throttle by half after 10 - 30 min.

As Chinese seller mention is a QS ( one memory slot dosn't work ) but still works maybe clear eprom fix it
or like with some servers need different heatsing if get more powerful CPU ?.

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It has original SSD remember in mac pro 2013 when was used not original SSD then firmware was not update
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UPDATE install macFan control do full blast and no throttle

also reset prom

 

[Frixo Cool]

What's your overall experience with QS CPU? Apart from this throttling issue (resolved) is there any other problems? Is it 100% stable?

 

[someuserxsvr]

have to use mac fan control - without got trotting

then tested few hours under heavy load no issue

 

[Frixo Cool]

Do you need Macs Fan Control only in Windows?

 

[someuserxsvr]

yes on windows yes was trotting without fan control
only when do heavy load
dont remember if was tested on macos

any way don't use it as is to sell as something related to virtualizaton was banned by apple firmware

 

[Frixo Cool]

I didn't understand this, what exact part is disabled in the firmware, what specifically didn't work for you?

I use Oracle VirtualBox for emulation and it works fine so far.

 

[someuserxsvr]

esxi is failed to install on latest firmware

 

[Frixo Cool]

esxi is failed to install on latest firmware

Isn't this installation problem general, and not somehow related to the specific Xeon series? As far as I read, those with stock Mac Pro configurations also have problems with ESXi and there are some workarounds to do the installation.

 

[someuserxsvr]

for esxi only for older firmware new firmware kill esxi instalation use impossible
Installation CPU was easy same like on Mac trash.

The only issue as remember was when CPU hit throttle then stayed ther until as remember restart ( test with CPU-Z long run ). That was reasons why use software for windows for fan control after create profile was ok or when do some task then also was ok. That CPU official was unsupported and i think don't have thermal profile