Thank you very much for clarification.The Xeon E5-2650 v3 QFSB supports up to 1866mhz quadchannel, never seen HWinfo screenshots with more.
Might be a feature despite Ark claiming 2133...Thank you very much for clarification.
Do you think this is ES/QS limitations or E5-2650 V3 feature?
ES/QS should support the same memory frequencies. The difference between an ES and a QS is in the microcode and the stepping/revisions. Although there are cases where an ES and QS are the same aside from microcode detection. Also ES usually have different clock speeds particularly for turbo boost (usually lower for both).Thank you very much for clarification.
Do you think this is ES/QS limitations or E5-2650 V3 feature?
Thanks for this link on V3 Xeons, it is really very useful, shows why E5-2650 v3 sets DDR4-2133 as 1866.Might be a feature despite Ark claiming 2133...
Intel Xeon E5-2600 v3 "Haswell" Processor Review | Microway
- Entry-level “Basic” CPUs now support 1600MHz memory (a 20% increase)
- Mid-level “Standard” CPUs now support 1866MHz memory (a 16% increase)
- Higher-end “Advanced”, “High Core Count” & “Frequency Optimized” CPUs now support up to 4 DIMMs per socket at 2133MHz (a 14% increase)
Yes, now I see this is not limitation of ES/QS chips.ES/QS should support the same memory frequencies. The difference between an ES and a QS is in the microcode and the stepping/revisions. Although there are cases where an ES and QS are the same aside from microcode detection. Also ES usually have different clock speeds particularly for turbo boost (usually lower for both).
MisterTao: Leading Taobao Agent - Taobao Product - 至强E5-2686 V3正显睿频3.5G 18核36线程超2666 2697 2698 2699V4Wow I can't believe I missed out on the E5-2686 V3 QS. Btw both appear to have the same stepping and revision the difference appears to be in the microcode detection by CPU-Z. Now the cheapest E5-2686 V3 QS I can find is at $505 which is almost $665 Canadian dollars.
Have you or anyone ordered off this site/seller? Seems pretty hard when you can't read Chinese, even with google translator.
If its the final QS stepping then it should work as those are identical to production levels.Still reading my way through the whole thread but what do you guys think the chances are that an hp gen9 server would accept a QS CPU
Well the screenshot is up, its Stepping 2 /R2 .. so i'd assume its not too bad. On the other hand there are severla steppings after it so they found some more issues... Decisions decisionsWould be QFQR on E5-2695 v3 be acceptable or is that too early?
It's one of those intermediate steppings (M0) ...
That's the same one as a production processor. Haswell-E/EP all use Stepping 2. R2 is incorrect as CPU-Z reads it when it probably means Revision 2. The actual stepping for Haswell-EP processors such as the E5-2683 V3 are C1. So the revision is correct and if you see Stepping or Revision 2 it is either QS or pre-QS/ES. You may have also noticed some ES Haswell-EP processors have a Stepping or Revision of 1. Those are the first samples and likely B stepping processors.Well the screenshot is up, its Stepping 2 /R2 .. so i'd assume its not too bad. On the other hand there are severla steppings after it so they found some more issues... Decisions decisions![]()
Mistertao is taking 8% commission.Have you or anyone ordered off this site/seller? Seems pretty hard when you can't read Chinese, even with google translator.
I can't say that I am surprised about them overselling the E5-2686 V3 QS. They recently had the E5-2630 V4 ES (R0) with many in-stock and then kept revising the quantity down to 2. I wonder if whomever bought 2 of those processors were probably refunded as well. Xtrememicro still has yet to respond as to when they are getting more 2630 V4 or even 2686 V3 QS.By the way , xtrememicro refunded my order on the xeon e5 2686v3 qs and told me they have oversold, did it happened to you too?
Are those V4? Because in V4, intel introduced some kind of stupid protection when using AVX, where the chips throttle down even under normal temperatures. Since Corona uses AVX, numerous people with retail V4 chips have written on their forum that they get less performance than their V3 systems.I picked up 2 E5-2689 QS. I could have got the retail for about 26% more but most dealers told me they were identical. It has same stepping and everything. Now, my understanding was this mode would do 3.7 all core and Turbo to 3.8. And that is what I am seeing and I am seeing overall nominal benchmarks and in-line with spec.
However, when I run Corona Benchmark then I see the CPU throttle down to 3.2/3.3ghz and my real speed is only 3.2 to 3.5 vs 3.7. My temps are still reporting below 70C but challenging it. So if I'm seeing anything less then 3.7 all core does that mean the chip is heat throttling or is there another kind of throttling TDP throttling? I am running NH-i4 cooler. The CPU monitors do not report heating throttling. But, it seems to throttle at 55c to 60c.
It appears to be heat throttling but should this cooler be sufficient for this chip? Or maybe the paste hasn't set yet. Any recommendations for a good solid cooler that will do the job if this one doesn't? Maybe h100?