The Xeon E5-2600: Dual Sandy Bridge for Servers
by Johan De Gelas on March 6, 2012 9:27 AM EST- Posted in
- IT Computing
- Virtualization
- Xeon
- Opteron
- Cloud Computing
Measuring Real-World Power Consumption
The Equal Workload (EWL) version of vApus FOS is very similar to our previous vApus Mark II "Real-world Power" test. To create a real-world “equal workload” scenario, we throttle the number of users in each VM to a point where you typically get somewhere between 20% and 80% CPU load on a modern dual CPU server. The amount of requests is the same for each system, hence "equal workload". The CPU load is typically around 30-50%, with peaks up to 65% (for more info see here). At the end of the test, we get to a low 10%, which is ideal for the machine to boost to higher CPU clocks (Turbo) and race to idle.
We used the "Balanced" power policy and enabled C-states as the current ESXi settings make poor use of the C6 capabilities of the latest Opterons and Xeons.
First let's check out the response times.
| vApus FOS Response times (ms) | ||||||||
| CPU | PhpBB1 | PHPBB2 | MySQL OLAP | Zimbra | ||||
| AMD Opteron 6276 | 101 | 30 | 3.8 | 41 | ||||
| AMD Opteron 6174 | 118 | 41 | 3.8 | 45 | ||||
| Intel Xeon X5650 | 45 | 18 | 2.4 | 29 | ||||
| Intel Xeon E5-2660 | 41 | 18 | 2.5 | 25 | ||||
| Intel Xeon E5-2690 | 27 | 14 | 2.3 | 23 | ||||
It's worth noting that enabling the C-states in ESXi improves the performance/watt ratio of the Opteron 6276 quite a bit. Not only is the power consumption lower (see below), but enabling C6 allows higher turbo clocks, which in turn benefits response times. Compared to our previous test (standard out of the box "Balanced") all response times improve by 10% except for MySQL (which is already very low).
Even with that improvement however it is not enough to beat the Xeon E5. The Xeon E5 delivers extremely low response times....
... while sipping very little power, despite being run inside a feature rich server. Kudos to Intel for a job very well done.
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MrSpadge - Tuesday, March 6, 2012 - link
Put some sarcasm tags in there to save some people from getting confused...cynic783 - Tuesday, March 6, 2012 - link
definitely sarcastic. i was actually surprised not to see any fanbois so I thought I'd pretendbadjohny - Tuesday, March 6, 2012 - link
I have no doubt these chips or something similar will end up in the new mac pros. Who are in a very bad need of a refresh.Shuxclams - Tuesday, March 6, 2012 - link
Looking at a complete visualization transformation in our server room, looks like the decision was made for us as far as architecture. Wow....TeXWiller - Tuesday, March 6, 2012 - link
<quote>The new Xeon also supports faster DDR-3 1600. Contrary to the Interlagos Opteron which can only support this memory speed with one DIMM per channel</quote>Interlagos supports memory up to DDR3-1600 using two single rank memory modules, or one single rank and one double rank module if using registered memory, and two single rank modules if using unbuffered memory. DDR3-1866 is supported on a single load-reduced registered, or on a single unbuffered module per channel. It depends on the board manufacturer and more importantly, it can be all read on the manual, so to speak.davegraham - Tuesday, March 6, 2012 - link
AMD Interlagos can support more than 1 DDR3-1600 ECC/REG dimm per channel. I run 8 on a single socket 6276 and it works at the rated speed.TeXWiller - Wednesday, March 7, 2012 - link
Too bad these kinds of errors in the articles are not usually fixed.JohanAnandtech - Wednesday, March 7, 2012 - link
I will double check .meloz - Tuesday, March 6, 2012 - link
Just wanted to congratulate Johan on a job well done. Very thorough analysis, Intel have achieved a very dominant position with this new platform and this is reflected in pricing of their processors as well!AMD was already a sub 10% niche (with a market share to mirror) in the data center, now even that niche has evaporated.
New Opterons (based on Piledriver) might decrease the performance gap to Intel under certain benchmarks, but I doubt they will beat Intel. Intel has plenty of SKUs above the quickest AMD Opterons to adjust prices and kill any new challenge from AMD, instantly.
JohanAnandtech - Wednesday, March 7, 2012 - link
Thanks! Although I hope Intel gets a bit more competition though.