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CPU Benchmarks

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Intel Xeon X5660 vs Xeon L5640

The Intel Xeon L5640 @ 2.27GHz is newer than Intel Xeon X5660 @ 2.80GHz and is around -22% slower in multi-threaded (CPU Mark) testing. The Intel Xeon L5640 @ 2.27GHz is around -19% slower in single-thread testing. Also, Intel Xeon X5660 @ 2.80GHz uses around 45% more power. All the CPUs in this comparison belong in the Server CPU Class. The values below were tabulated from a combined 386 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 L5640 @ 2.27GHz+ ADD
Price Search Online Search Online
Socket TypeLGA1366LGA1366
CPU ClassServerServer
Clockspeed2.8 GHz2.3 GHz
Turbo SpeedUp to 3.2 GHzUp to 2.8 GHz
# of Physical Cores6 (Threads: 12)6 (Threads: 12)
CacheL1: 384KB, L2: 1.5MB, L3: 12MBL1: 384KB, L2: 1.5MB, L3: 12MB
TDP95W60W
Yearly Running Cost$17.34$10.95
Other
First Seen on ChartQ2 2010Q3 2010
# of Samples33947
CPU Rank21392437
CPU Value600.451.8
Single Thread Rating(% diff. to max in group)1366(0.0%)1107(-19.0%)
CPU Mark(% diff. to max in group)5992(0.0%)4659(-22.2%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 9th of February 2026 - Higher results represent better performance
Intel Xeon X5660 @ 2.80GHz
5,992
Intel Xeon L5640 @ 2.27GHz
4,659
PassMark Software © 2008-2026
CPU Value (CPU Mark / $Price)
As of 9th of February 2026 - Higher results represent better value
Intel Xeon X5660 @ 2.80GHz
600.4
Intel Xeon L5640 @ 2.27GHz
51.8
PassMark Software © 2008-2026
CPU Single Thread Rating
As of 9th of February 2026 - Higher results represent better performance
Intel Xeon X5660 @ 2.80GHz
1,366
Intel Xeon L5640 @ 2.27GHz
1,107
PassMark Software © 2008-2026
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 L5640 @ 2.27GHz
Max TDP95W60W
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.