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Old 2014-09-09, 15:54   #1
firejuggler
 
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Default New Xeon

A new generation of Xeon is out...
Quote:
Spanning four to 18 cores and up to 3.6 GHz base clock rates, Intel is enabling CPU models that are optimized for many different markets. Thermal design power ratings range from 55 to 145 W on the server side, and as high as 160 W for the Xeon E5-2687W v3 workstation part.
18 core!(!!)

http://www.tomshardware.com/reviews/...l-ep,3932.html
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Old 2014-09-09, 15:56   #2
VictordeHolland
 
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"Victor de Hollander"
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AnandTech review:
http://www.anandtech.com/show/8423/i...well-ep-cores-
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Old 2014-09-09, 16:35   #3
TheJudger
 
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Mar 2005
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as usual: memory bottleneck is even worse

E5-26xx v2
  • up to 12 cores
  • 8 DP FLOPS per clock
  • up to 4x DDR3-1866

E5-26xx v3
  • up to 18 cores (+50%)
  • 16 DP FLOPS per clock (+100%)
  • up to 4x DDR4-2133 (+14.3%)

Oliver
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Old 2014-09-09, 16:59   #4
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But is it so bad if you go with lower core count CPUs?
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Old 2014-09-09, 18:17   #5
R.D. Silverman
 
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Quote:
Originally Posted by Mark Rose View Post
But is it so bad if you go with lower core count CPUs?
Please specify the antecedent of the word "it".
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Old 2014-09-09, 18:44   #6
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Quote:
Originally Posted by R.D. Silverman View Post
Please specify the antecedent of the word "it".
Let me clarify: yes, the memory bandwidth per core is worse if getting an 18 core CPU, but if choosing a CPU with the same number of cores, the bandwidth per core situation would be better with the new platform, would it not?
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Old 2014-09-09, 20:38   #7
kladner
 
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Quote:
Originally Posted by Mark Rose View Post
Let me clarify: yes, the memory bandwidth per core is worse if getting an 18 core CPU, but if choosing a CPU with the same number of cores, the bandwidth per core situation would be better with the new platform, would it not?
Doesn't that depend on the bandwidth of DDR-4 versus DDR-3?

Last fiddled with by kladner on 2014-09-09 at 20:39
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Old 2014-09-09, 20:55   #8
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Quote:
Originally Posted by kladner View Post
Doesn't that depend on the bandwidth of DDR-4 versus DDR-3?
2133 MHz should give ~14% more bandwidth than 1866 MHz. So that's an improvement over the old Xeon platform. Not an improvement over desktops that support 2133 MHz and faster memory speeds though.
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Old 2014-09-10, 06:37   #9
danaj
 
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Feb 2011
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Mmm, Primo with 72 threads. Not very cost effective, but sounds fun.

So far I haven't seen anything quite tempting enough to make me want to upgrade the 3770K/4770K and 3930K. Lots of stuff to drool over (5960X, v3 Xeons) but once price and price-benefit (for my work) enters in...
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