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Intel Xeon E5-2640 v2 vs Xeon X5660

The Intel Xeon E5-2640 v2 @ 2.00GHz is newer than Intel Xeon X5660 @ 2.80GHz and is around 28% faster in multi-threaded (CPU Mark) testing. The Intel Xeon E5-2640 v2 @ 2.00GHz is around -7% slower in single-thread testing. Both CPUs operates at simliar power levels (TDP). All the CPUs in this comparison belong in the Server CPU Class. The values below were tabulated from a combined 383 benchmarks submitted from our PerformanceTest software and results and are updated daily to include new submissions.

  • The first section will show basic information for each CPU selected.
  • The additional graphs shows the CPU Mark and Single Thread values of each CPU selected.
  • An accompany graph, if price data is available, will shows the value for money, in terms of the CPU Mark/Thread Rating per dollar.
  • The last section will show approximate yearly running costs for the CPUs.

×Intel Xeon E5-2640 v2 @ 2.00GHz×Intel Xeon X5660 @ 2.80GHz+ ADD
Price $65 - BUY Search Online
Socket TypeLGA 2011LGA1366
CPU ClassServerServer
Clockspeed2.0 GHz2.8 GHz
Turbo SpeedUp to 2.5 GHzUp to 3.2 GHz
# of Physical Cores8 (Threads: 16)6 (Threads: 12)
CacheL1: 512KB, L2: 2.0MB, L3: 20MBL1: 384KB, L2: 1.5MB, L3: 12MB
TDP95W95W
Yearly Running Cost$17.34$17.34
Other
First Seen on ChartQ1 2014Q2 2010
# of Samples50333
CPU Value117.3599.1
Single Thread Rating(% diff. to max in group)1268(-7.1%)1366(0.0%)
CPU Mark(% diff. to max in group)7625(0.0%)5979(-21.6%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 14th of November 2025 - Higher results represent better performance
Intel Xeon E5-2640 v2 @ 2.00GHz
7,625
Intel Xeon X5660 @ 2.80GHz
5,979
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 14th of November 2025 - Higher results represent better value
Intel Xeon E5-2640 v2 @ 2.00GHz
117.3
Intel Xeon X5660 @ 2.80GHz
599.1
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 14th of November 2025 - Higher results represent better performance
Intel Xeon E5-2640 v2 @ 2.00GHz
1,268
Intel Xeon X5660 @ 2.80GHz
1,366
PassMark Software © 2008-2025
Estimated Energy Usage Cost
Estimated Energy Adjustable Values
Average hours of use per day Average CPU Utilization (0-100%)1 Power cost, $ per kWh2
8
25
1Average user usage is typically low and can vary from task to task. An estimate load 25% is nominal.
2Typical power costs vary around the world. Check your last power bill for details. Values of $0.15 to $0.45 per kWh are typical.
Intel Xeon E5-2640 v2 @ 2.00GHz Intel Xeon X5660 @ 2.80GHz
Max TDP95W95W
Power consumption per day (kWh)NANA
Running cost per dayNANA
Power consumption per year (kWh)NANA
Running cost per yearNANA
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.