The Intel Xeon E7-8800 v3 Review: The POWER8 Killer?
by Johan De Gelas on May 8, 2015 8:00 AM EST- Posted in
- CPUs
- IT Computing
- Intel
- Xeon
- Haswell
- Enterprise
- server
- Enterprise CPUs
- POWER
- POWER8
HPC: Watts per Job
Last, but not least, we have a look at power consumption. First we measure idle power consumption.
We did not expect the E7 v3 to consume more energy at idle than the previous E7, but sure enough it did. Maybe the DDR4 memory buffers (Jordan Creek 2) need more energy than the previous ones?
For load power testing we used the OpenFOAM test and measured at the 95th percentile, which is basically the power consumed when processing the most parallel part.
These quad socket systems are made for reliability, and not quite as much as for performance-per-watt. The end result is that these quad socket servers need about as much power as your fabric iron. To put this in perspective: the Xeon E5-2699v3 is considered a real power hog among the Xeon E5s. Most of the other dual Xeon E5 servers are in the 390-450W range.
Let us see how much watt we need for each OpenFOAM job.
The new Xeon E7-8890v3 is a tiny bit more efficient, but it is almost neglible.
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PowerTrumps - Saturday, May 9, 2015 - link
I'm sure the author will update the article unless this was a Intel cheerleading piece.name99 - Friday, May 8, 2015 - link
The thing is called E7-8890. Not E7-5890?WTF Intel? Is your marketing team populated by utter idiots? Exactly what value is there in not following the same damn numbering scheme that your product line has followed for the past eight years or so?
Something like that makes the chip look like there's a whole lot of "but this one goes up to 11" thinking going on at Intel...
name99 - Friday, May 8, 2015 - link
OK, I get it. The first number indicates the number of glueless chips, not the micro-architecture generation. Instead we do that (apparently) with a v2 or v3 suffix.I still claim this is totally idiotic. Far more sensible would be to use the same scheme as the other Intel processors, and use a suffix like S2, S4, S8 to show the glueless SMP capabilities.
ZeDestructor - Friday, May 8, 2015 - link
They've been using this convention since Westmere-EX actually, at which point they ditched their old convention of a prefix letter for power tier, followed by one digit for performance/scalability tier, followed by another digit for generation then the rest for individual models. Now we have 2xxx for dual socket, 4xxx for quad socket and 8xxx for 8+ sockets, and E3/E5/E7 for the scalability tier. I'm fine with either, though I have a slight preference for the current naming scheme because the generation is no longer mixed into the main model number.Morawka - Saturday, May 9, 2015 - link
man the power 8 is a beefy cpu... all that cache, you'd think it would walk all over intel.. but intel's superior cpu design winsPowerTrumps - Saturday, May 9, 2015 - link
please explaintsk2k - Saturday, May 9, 2015 - link
Where are the gaming benchmarks?JohanAnandtech - Saturday, May 9, 2015 - link
Is there still a game with software rendering? :-)Gigaplex - Sunday, May 10, 2015 - link
Llvmpipe on Linux gives a capable (feature wise) OpenGL implementation on the CPU.Klimax - Saturday, May 9, 2015 - link
Don't see POWER getting anywhere with that kind of TDP. There will be dearth of datacenters and other hosting locations retooling for such thing. And I suspect not many will even then take it as cooling and power costs will be damn too high.Problem is, IBM can't go lower with TDP as architecture features enabling such performance are directly responsible for such TDP. (Just L1 consumes 2W to keep few cycles latency at high frequency)