ES Xeon Discussion

yobigd20

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Man, now I'm so confused.... :)

So what is Friz chess bench doing that Prime95 is not?
I'm pretty sure prime95 is very highly not recommended to use anymore. From what I've read and what intel says is that it damages the CPUs now. It didn't use to be this way but some time a few years ago something changed with their architecture that when using prime95 it permanently damages the CPU. I think it has to deal with causing such extreme temps that the chips or silicone break down.


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Nanotech

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I'm pretty sure prime95 is very highly not recommended to use anymore. From what I've read and what intel says is that it damages the CPUs now. It didn't use to be this way but some time a few years ago something changed with their architecture that when using prime95 it permanently damages the CPU. I think it has to deal with causing such extreme temps that the chips or silicone break down.


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Apparently that is for the Haswell series processors due to the AVX instruction set. The latest versions of Prime95 cause the processor to draw too much power which can cause it to degrade but going back a few versions of Prime95 the issue disappears. OCCT, Aida64, Realbench and a few others are good for stress testing.
 

William

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I'm pretty sure prime95 is very highly not recommended to use anymore. From what I've read and what intel says is that it damages the CPUs now. It didn't use to be this way but some time a few years ago something changed with their architecture that when using prime95 it permanently damages the CPU. I think it has to deal with causing such extreme temps that the chips or silicone break down.


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I agree with this and Linpack also.
Both of these are fine for a few minutes I think, for a simple stability test. But I have seen people run both of these for very long periods, then the exact opposite of what they are trying to do, show stability of the system starts to happen. The CPU degrades and starts blue screening, this can carry over to normal system operation when slight loads cause a blue screen.

Massive prime number benchmarks searching for extremely large prime numbers run for long periods is extremely hard on CPU's. I believe in the CPU the circuits that get used for these benches get over worked and like yobigd20 said, causes way to much heat in very small areas causing degrading of that area. I actually have a long story about this I could post.

I have seen this happen with CPU's running at stock speeds and especially with OC'd systems. Most of my testing was back with 3960x's and dual cpu systems from that time period. Stability would suffer resulting in backing off of settings, then stability suffers again etc.

This is one of the main reasons I do not OC anymore, I have seen to many CPU's degrade over time. Even Phase Change and Water Cooling can not help this effect, it just takes longer for stability issues to start showing up, but they will.
 
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dunde

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I agree with this and Linpack also.
Both of these are fine for a few minutes I think, for a simple stability test. But I have seen people run both of these for very long periods, then the exact opposite of what they are trying to do, show stability of the system starts to happen. The CPU degrades and starts blue screening, this can carry over to normal system operation when slight loads cause a blue screen.

Massive prime number benchmarks searching for extremely large prime numbers run for long periods is extremely hard on CPU's. I believe in the CPU the circuits that get used for these benches get over worked and like yobigd20 said, causes way to much heat in very small areas causing degrading of that area. I actually have a long story about this I could post.

I have seen this happen with CPU's running at stock speeds and especially with OC'd systems. Most of my testing was back with 3960x's and dual cpu systems from that time period. Stability would suffer resulting in backing off of settings, then stability suffers again etc.

This is one of the main reasons I do not OC anymore, I have seen to many CPU's degrade over time. Even Phase Change and Water Cooling can not help this effect, it just takes longer for stability issues to start showing up, but they will.
Do you have any Intel sources which adresses this problem or is it something that is generally accepted as a truth?
My experriences with electromigration is almost purely due to extreme voltage which produces more heat than what is possible do dissipate quickly enough. Todays CPUs with adaptive voltage, frequencies and thermal throttling have I not seen or even expectt tis to happen. I has mostly regarded it as rants on forums. Wrong or right, I do not know, but some hard facts would be informative.
 

William

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Sadly I do not have any Intel info that address this.

Most of my experience was with overclocked systems so yes voltages were raised for this. And again my experiences were with mostly 3960x's and various other desktop cpu's.

I used to build a fair amount of systems for HFT guys, they will disable HT and get 4.8ghz out of these 3960x's. They loved them and some are even still running today after years of operations.

I had another system that was phase changed cooled with a 990x in a data center, fist thing they did was start running Linpack on it and they forgot they had it running, a few days later the CPU had degraded and eventually replaced.

Even with E5-2687W with a 103 BCLK on dual proc rigs I saw strange things running prime number crunchers for very long periods.
 

yobigd20

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Do you have any Intel sources which adresses this problem or is it something that is generally accepted as a truth?
My experriences with electromigration is almost purely due to extreme voltage which produces more heat than what is possible do dissipate quickly enough. Todays CPUs with adaptive voltage, frequencies and thermal throttling have I not seen or even expectt tis to happen. I has mostly regarded it as rants on forums. Wrong or right, I do not know, but some hard facts would be informative.
there are A LOT of end users that have the failures, so thats proof enough, (easy to search the web for all those threads on lots of various forums), but I've never seen anything "official" from Intel other than small statements like this: Prime95 and Haswell that admit theres an issue, but they never say anything else or go into detail. I think they are just trying to make sure the issue doesn't get blown up in the lime light as it could hurt their business.


Intel has identified an issue that potentially affects the 6th Gen Intel® Core™ family of products. This issue only occurs under certain complex workload conditions, like those that may be encountered when running applications like Prime95. We have not experienced any issues with the 4th Generation Intel® Core™ i5 Processors and Prime95.
Just bear in mind that Intel does not validate third party tools as per diagnosing our products. I invite you running the Intel® Processor Diagnostic Tool
I highlight that last sentence because AFAIC that's them saying "yep, it'll destroy the product, and we dont want to get sued so don't use it, and only use our own test tool which won't break our own product".
 

RolloZ170

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mizzlerain

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Supermicro is the best choice to run ES v3/v4 for you.
On X99 it will be any ASRock X99
First of all, thanks for all of your information throughout the thread. Please let me know of your opinion.

I have Asrock x99 Extreme4 BIOS 3.40 (most current). And I just purchased E5 2695v3 QFQG. I wonder if they are compatible.

ASRock > X99 Extreme4
Based on the link above my motherboard is supposed to support both C0 and C1 stepping but I am not sure what QFQG stepping is... hopefully it is C0 at least.

http://www.cpu-world.com/sspec/QG/QG7R.html
This webpage only shows QG7R as C0; there is no information about QFQG

Do you think QFQG and QG7R are very different from each other in terms of stepping? Thanks ahead for your help

p.s Do Asrock drop the compatibility for previous ES cpu? For example, maybe older BIOS versions could run engineering samples of v3 but no longer support them with newer BIOS. My 3.40 version seems too new to run v3.
 

Nanotech

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First of all, thanks for all of your information throughout the thread. Please let me know of your opinion.

I have Asrock x99 Extreme4 BIOS 3.40 (most current). And I just purchased E5 2695v3 QFQG. I wonder if they are compatible.

ASRock > X99 Extreme4
Based on the link above my motherboard is supposed to support both C0 and C1 stepping but I am not sure what QFQG stepping is... hopefully it is C0 at least.

http://www.cpu-world.com/sspec/QG/QG7R.html
This webpage only shows QG7R as C0; there is no information about QFQG

Do you think QFQG and QG7R are very different from each other in terms of stepping? Thanks ahead for your help

p.s Do Asrock drop the compatibility for previous ES cpu? For example, maybe older BIOS versions could run engineering samples of v3 but no longer support them with newer BIOS. My 3.40 version seems too new to run v3.
QFQG should be C0/C1 stepping.

Intel Xeon Processor E5-2695 v3 pre-QS CPU 2.3GHz 14-Core Max 3.5GHz QFQG ES

Note the HWInfo64 screenshot:

http://i.ebayimg.com/00/s/ODg5WDEwMjQ=/z/PtAAAOSw1h5XQhBJ/$_57.JPG

It's a pre-QS so not early ES but not QS. So it should be supported by the motherboard. Also note the following according to that seller/item:

The item for sale is a genuine Intel Xeon E5-2695 v3 C0 stepping pre qualification sample (pre-QS) processor. It provides the same features, multi-core performance, and hardware compatibility as the production processorSR1XG, but with higher turbo frequencies that are better in single-core or low thread performance. Each item will be sold individually with an original Intel anti-static clamshell protector.

Motherboards:

  • Intel: S2600CW/WT/TP/KP families
  • Supermicro: X10S series, X10D series, C7X99-OCE
  • Tyan: S562 series, S707 series, S708 series
  • Asus: Z10 series, X99 series, Rampage V Extreme, Sabertooth X99
  • Gigabyte: MU70, MW50/70 series, MD30/50/60/70/80 series, GA-X99 series
  • MSI: MS-S0991, MS-S1311, MS-S1351, MS-S1561, X99 series
  • ASRock: EPC612 series, X99 series
  • EVGA: X99 family
 
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mizzlerain

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RolloZ170

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First of all, thanks for all of your information throughout the thread. Please let me know of your opinion.
I have Asrock x99 Extreme4 BIOS 3.40 (most current). And I just purchased E5 2695v3 QFQG. I wonder if they are compatible.
ASRock > X99 Extreme4
Based on the link above my motherboard is supposed to support both C0 and C1 stepping but I am not sure what QFQG stepping is... hopefully it is C0 at least.
http://www.cpu-world.com/sspec/QG/QG7R.html
This webpage only shows QG7R as C0; there is no information about QFQG
Do you think QFQG and QG7R are very different from each other in terms of stepping? Thanks ahead for your help
p.s Do Asrock drop the compatibility for previous ES cpu? For example, maybe older BIOS versions could run engineering samples of v3 but no longer support them with newer BIOS. My 3.40 version seems too new to run v3.
should be C0
E5-2695v3 QFQG.jpg
 
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Nanotech

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Thank you so much. That helped alot. I really really appreciate it. Hopefully my bios support it.
It should. I edited my post to also include this from that sellers listing:

The item for sale is a genuine Intel Xeon E5-2695 v3 C0 stepping pre qualification sample (pre-QS) processor. It provides the same features, multi-core performance, and hardware compatibility as the production processorSR1XG, but with higher turbo frequencies that are better in single-core or low thread performance. Each item will be sold individually with an original Intel anti-static clamshell protector.

Motherboards:

  • Intel: S2600CW/WT/TP/KP families
  • Supermicro: X10S series, X10D series, C7X99-OCE
  • Tyan: S562 series, S707 series, S708 series
  • Asus: Z10 series, X99 series, Rampage V Extreme, Sabertooth X99
  • Gigabyte: MU70, MW50/70 series, MD30/50/60/70/80 series, GA-X99 series
  • MSI: MS-S0991, MS-S1311, MS-S1351, MS-S1561, X99 series
  • ASRock: EPC612 series, X99 series
  • EVGA: X99 family
Note how the X99 AsRock is on the list.
 
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dunde

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Aug 7, 2016
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First of all, thanks for all of your information throughout the thread. Please let me know of your opinion.

I have Asrock x99 Extreme4 BIOS 3.40 (most current). And I just purchased E5 2695v3 QFQG. I wonder if they are compatible.

ASRock > X99 Extreme4
Based on the link above my motherboard is supposed to support both C0 and C1 stepping but I am not sure what QFQG stepping is... hopefully it is C0 at least.

http://www.cpu-world.com/sspec/QG/QG7R.html
This webpage only shows QG7R as C0; there is no information about QFQG

Do you think QFQG and QG7R are very different from each other in terms of stepping? Thanks ahead for your help

p.s Do Asrock drop the compatibility for previous ES cpu? For example, maybe older BIOS versions could run engineering samples of v3 but no longer support them with newer BIOS. My 3.40 version seems too new to run v3.
Why did you not go for a E5 2690 V4 instead? It runs cooler, is faster and have the same price.
 

gtz

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Aug 23, 2016
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Hey guys, this really is just a general question about shipping. When buying ES chips (anything really) from China, how long does it stay at Customs? Mine has been there since last Tuesday.

Thanks
 

helsyeah

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Aug 22, 2015
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Hey guys, this really is just a general question about shipping. When buying ES chips (anything really) from China, how long does it stay at Customs? Mine has been there since last Tuesday.

Thanks
Mine was in customs for a day, that was it. I suspect its variable, depending on how the seller declared the item, etc.
 

RolloZ170

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Apr 24, 2016
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ES chips surfaced on Ebay are all E5. Has been there any E3 chips that are ES?
NO.
E3 xeon are only (SP)single processor
there are no E5-1xxx (SP) cpu too.
maybe it is not worth because they are rel. cheap. as used/retail.
 
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