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Intel Xeon L5520 vs Xeon E5640

The Intel Xeon E5640 @ 2.67GHz is newer than Intel Xeon L5520 @ 2.27GHz also around 40% faster in multi-threaded (CPU Mark) testing, it is around 15% faster in single-thread testing. However, Intel Xeon E5640 @ 2.67GHz uses around 29% more power. All the CPUs in this comparison belong in the Server CPU Class.The values below were tabulated from a combined 77 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 L5520 @ 2.27GHz×Intel Xeon E5640 @ 2.67GHz+ ADD
Price Search Online Search Online
Socket TypeLGA1366LGA1366
CPU ClassServerServer
Clockspeed2.3 GHz2.7 GHz
Turbo SpeedUp to 2.5 GHzUp to 2.9 GHz
# of Physical Cores4 (Threads: 8)4 (Threads: 8)
CacheL1: 256KB, L2: 1.0MB, L1: 256KB, L2: 1.0MB, L3: 12MB
TDP60W80W
Yearly Running Cost$10.95$14.60
Other
First Seen on ChartQ1 2010Q2 2010
# of Samples2552
CPU Value78.454.7
Single Thread Rating(% diff. to max in group)1001(-14.8%)1175(0.0%)
CPU Mark(% diff. to max in group)2274(-39.9%)3782(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 23rd of November 2024 - Higher results represent better performance
Intel Xeon L5520 @ 2.27GHz
2,274
Intel Xeon E5640 @ 2.67GHz
3,782
PassMark Software © 2008-2024
CPU Value (CPU Mark / $Price)
As of 23rd of November 2024 - Higher results represent better value
Intel Xeon L5520 @ 2.27GHz
78.4
Intel Xeon E5640 @ 2.67GHz
54.7
PassMark Software © 2008-2024
CPU Single Thread Rating
As of 23rd of November 2024 - Higher results represent better performance
Intel Xeon L5520 @ 2.27GHz
1,001
Intel Xeon E5640 @ 2.67GHz
1,175
PassMark Software © 2008-2024
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 L5520 @ 2.27GHz Intel Xeon E5640 @ 2.67GHz
Max TDP60W80W
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.