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Intel Xeon X5660 vs Xeon E5-2660 v2

The Intel Xeon E5-2660 v2 @ 2.20GHz is newer than Intel Xeon X5660 @ 2.80GHz and is significantly faster in multi-threaded (CPU Mark) testing. The Intel Xeon E5-2660 v2 @ 2.20GHz is around 9% faster 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 488 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 X5660 @ 2.80GHz×Intel Xeon E5-2660 v2 @ 2.20GHz+ ADD
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Socket TypeLGA1366LGA 2011
CPU ClassServerServer
Clockspeed2.8 GHz2.2 GHz
Turbo SpeedUp to 3.2 GHzUp to 3.0 GHz
# of Physical Cores6 (Threads: 12)10 (Threads: 20)
CacheL1: 384KB, L2: 1.5MB, L3: 12MBL1: 640KB, L2: 2.5MB, L3: 25MB
TDP95W95W
Yearly Running Cost$17.34$17.34
Other
First Seen on ChartQ2 2010Q1 2014
# of Samples334154
CPU Value598.879.7
Single Thread Rating(% diff. to max in group)1366(-8.4%)1491(0.0%)
CPU Mark(% diff. to max in group)5976(-42.3%)10355(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 16th of December 2025 - Higher results represent better performance
Intel Xeon X5660 @ 2.80GHz
5,976
Intel Xeon E5-2660 v2 @ 2.20GHz
10,355
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 16th of December 2025 - Higher results represent better value
Intel Xeon X5660 @ 2.80GHz
598.8
Intel Xeon E5-2660 v2 @ 2.20GHz
79.7
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 16th of December 2025 - Higher results represent better performance
Intel Xeon X5660 @ 2.80GHz
1,366
Intel Xeon E5-2660 v2 @ 2.20GHz
1,491
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 X5660 @ 2.80GHz Intel Xeon E5-2660 v2 @ 2.20GHz
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.