E5-2696 V2 CPUs for $325!

Storm-Chaser

Twin Turbo
Apr 16, 2020
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I thought 2697 were supposed to be the "better" one since it's more expensive than the 2696 and also have more MB compatibility and is not OEM and is guaranteed to work on more MB?
Yes these attributes you listed likely make it the more attractive option. But if you are looking at raw performance, I think that's the concept we are dealing with here. They are very very similar processors, nearly identical, regardless of our semantics here. Although cost is relative. The retail chips always run a little more expensive than OEM processors. In general terms, of course.
 

Storm-Chaser

Twin Turbo
Apr 16, 2020
146
23
18
Upstate NY
just made an offer for two 2696 v2 at $79 each. With tax to my state on ebay (you suck for starting to collect tax on EVERY state), the total came out to be $169 and change for two 2696 v2. So not too bad I guess.... YMMV

1950X multicore performance for $169. even one single cpu multicore performance here is much better than anything you can get from intel or amd right now for around $80. Not to mention the saving on ram price...lol..

Yeah you know whats up! Pretty sick processor right?
 

fp64

Member
Jun 29, 2019
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This may be a bit vague, but here it is: I have a dell t7610 with two 2695v2 and 256gb @1600 doing
double precision calculations in all 24 cores 24/7/52. what is one to expect from an upgrade to two
2697v2? any guesses or benchmarks?
==
 

wildpig1234

Well-Known Member
Aug 22, 2016
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This may be a bit vague, but here it is: I have a dell t7610 with two 2695v2 and 256gb @1600 doing
double precision calculations in all 24 cores 24/7/52. what is one to expect from an upgrade to two
2697v2? any guesses or benchmarks?
==
Marginal improvement in multicore. Here's the bench for 2696 vs 2695 v2 . If you can score a pair of 2697 v2 with great price and able to sell your 2695 v2 at good price.

 

fp64

Member
Jun 29, 2019
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Thanks. The answer seems to be "dont bother".
The attractiveness of the v2 is/was the cheap(er) memory. Otherwise
a current cpu from intel/amd with fewer cores would easily outclass
any two v2s.
==
 

Storm-Chaser

Twin Turbo
Apr 16, 2020
146
23
18
Upstate NY
Thanks. The answer seems to be "dont bother".
The attractiveness of the v2 is/was the cheap(er) memory. Otherwise
a current cpu from intel/amd with fewer cores would easily outclass
any two v2s.
==
Depends on workload and other system hardware as well. And definitely not easily outclass two of them. Two 2696 v2 processors will actually edge out a core i9 extreme 10980XE in CPUz multi-core benchmark. That particular chip has 18 cores and 26 threads.

The memory performance is still pretty impressive as well. This is my z820 after populating all memory slots with DDR3 1866MHz RDIMMs, for a total of 16 memory modules, 8 memory channels and 64GB. This is the maximum supported memory speed of the chipset. This is the theoretical limit of ram performance/bandwidth in a z820 system. So as you can see, this RAM setup will very quickly out gun all dual channel kits (usually by a factor of two) and the vast majority of state of the art DDR4 quad channel systems as well.

1637412752400.png
 
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wildpig1234

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Aug 22, 2016
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You definitely have to spend significantly more than $170 to get any recent amd or intel cpu that can do faster 8+ multicore than dual 2696/7 v2. and even if we are talking about single cpu, you would have to spend significantly more than $80 to get any recent amd/intel cpu that can beat one 2696/7 v2 in 8+ multicore, although in this case the benefit is not as good as in the case of dual 2696/7 v2

It's really about 1-4 core performance is what make the newer cpu much better than the 2696/7 v2
 
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Storm-Chaser

Twin Turbo
Apr 16, 2020
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It's really about 1-4 core performance is what make the newer cpu much better than the 2696/7 v2
That's why I purchased a 9600KF as opposed to a 9900KF. It's basically identical in performance up to 6 cores, and what most people don't really get is that you will rarely use more than 6 cores, and even if you do, it's still not going to be much slower. It's not like a 6 core CPU cant handle processing data that is more oriented for an 8 core CPU. People think that if a game uses 8 cores, it will totally suck on anything less than an 8 core CPU. This is not the case.
 
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fp64

Member
Jun 29, 2019
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it seems unlikely that for double precision calculations any two v2 chips will come to anything near current ones having 2 avx512 units per core. As for bandwidth, the 10980XE has 4-channel max bandwidth 94 GB/s which is not that far from that of a pair 2697v2 while ignoring that for actual applications data may have to be pulled across qpi. even with superior combined bandwidth, v2s do not seem to have the double precision speed to compete with current ones.

for a chip to be worth considering it must have a min level of performance. cost becomes an issue once this threshold has been crossed. the way competition between intel and amd is going, v2s will probably become ignorable in the next year or two.
==
 
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wildpig1234

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Aug 22, 2016
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it seems unlikely that for double precision calculations any two v2 chips will come to anything near current ones having 2 avx512 units per core. As for bandwidth, the 10980XE has a 4-channel max bandwidth 94 GB/s which is not that far from that of a pair 2697v2 while ignoring that for actual applications data may have to be pulled across qpi. even with superior combined bandwidth, v2s do not seem to have the double precision speed to compete with current ones.

for a chip to be worth considering it must have a min level of performance. cost becomes an issue once this threshold has been crossed. the way the competition between intel and amd is going, the v2s will probably become ignorable in the next year or two.
==
Have to make sure your software use avx512 though