Question cpu core clock fluctuates and is incorrect

[pckld]

I have an Asus z10pe-d8 ws motherboard with 2 Xenon e5-2667 v3 (at least that's what the IHS says). both CPUs are aio water-cooled and I have ensured that they are both being sufficiently cooled. the problem is if I use both CPUs after about 10 minutes the CPU's cores will spike and my computer will turn itself off. the weird thing is, the ihs says these CPUs should be running at 3.2ghz, but in task manager, it says the base clock is at 2.9ghz. the CPUs are engineering samples but I am unsure if that is relevant. if I limit my CPU power to 98%, the clocks drop to about 2.6ghz, but the crashing no longer happens.

why is this happening and how do I fix it?

 

[kanewolf]

I have an Asus z10pe-d8 ws motherboard with 2 Xenon e5-2667 v3 (at least that's what the IHS says). both CPUs are aio water-cooled and I have ensured that they are both being sufficiently cooled. the problem is if I use both CPUs after about 10 minutes the CPU's cores will spike and my computer will turn itself off. the weird thing is, the ihs says these CPUs should be running at 3.2ghz, but in task manager, it says the base clock is at 2.9ghz. the CPUs are engineering samples but I am unsure if that is relevant. if I limit my CPU power to 98%, the clocks drop to about 2.6ghz, but the crashing no longer happens.

why is this happening and how do I fix it?

Replace ES cpus with production models.

 

[pckld]

Replace ES cpus with production models.

is it a usual thing to expect weird behaviour with ES cpus?

 

[kerberos_20]

ES 2993 v3 has 2.9GHz base clock, 3.6GHz turbo
engineering samples arent ment for live system, they are samples of CPU before it hits production, they are worse then their retail versions, full of bugs and whats more, BIOS support widly vary with those samples
qualified samples on the other hand are much more stable and are almost like production (retail) CPUs

 

[kerberos_20]

is it a usual thing to expect weird behaviour with ES cpus?

it can bluescreen once in a while or freeze/deadlock PC

 

[Karadjgne]

ES cpus are incomplete. Their purpose is to allow engineers to study specific components within the cpu, without affect of other components.

So you'll find ES without Lcache, only half the cores, missing the igpu, missing certain instruction sets compatibility, lowered clocks etc.

You'll only get a complete cpu in a retail sample.

But besides that, the base speed of a 2667 v3 is 3.2GHz, turbo is 3.6GHz, so it's very likely those ES are clock short changed versions, cannot be fixed, as they were set that low to start with and clocks were not bumped until a later version ES or the retail sample.

 

[kanewolf]

is it a usual thing to expect weird behaviour with ES cpus?

ES CPUs are not legal to sell -- https://www.intel.com/content/www/u...190/processors.html?wapkw=engineering samples
Technically you have stolen CPUs since ES CPUs remain the property of Intel for all time.