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CPU Benchmarks

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Intel Xeon E5645 vs Xeon E5649

The Intel Xeon E5649 @ 2.53GHz is newer than Intel Xeon E5645 @ 2.40GHz also around 11% faster in multi-threaded (CPU Mark) testing, it is around 14% 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 146 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 E5645 @ 2.40GHz×Intel Xeon E5649 @ 2.53GHz+ ADD
Price Search Online Search Online
Socket TypeLGA1366LGA1366
CPU ClassServerServer
Clockspeed2.4 GHz2.5 GHz
Turbo SpeedUp to 2.7 GHzUp to 2.9 GHz
# of Physical Cores6 (Threads: 12)6 (Threads: 12)
CacheL1: 384KB, L2: 1.5MB, L3: 12MBL1: 384KB, L2: 1.5MB, L3: 12MB
TDP80W80W
Yearly Running Cost$14.60$14.60
Other
First Seen on ChartQ2 2011Q3 2011
# of Samples10244
CPU Value36.643.5
Single Thread Rating(% diff. to max in group)1134(-13.8%)1316(0.0%)
CPU Mark(% diff. to max in group)5019(-11.3%)5659(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 14th of March 2025 - Higher results represent better performance
Intel Xeon E5645 @ 2.40GHz
5,019
Intel Xeon E5649 @ 2.53GHz
5,659
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 14th of March 2025 - Higher results represent better value
Intel Xeon E5645 @ 2.40GHz
36.6
Intel Xeon E5649 @ 2.53GHz
43.5
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 14th of March 2025 - Higher results represent better performance
Intel Xeon E5645 @ 2.40GHz
1,134
Intel Xeon E5649 @ 2.53GHz
1,316
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 E5645 @ 2.40GHz Intel Xeon E5649 @ 2.53GHz
Max TDP80W80W
Power consumption per day (kWh)0.160.16
Running cost per day$0.040$0.040
Power consumption per year (kWh)58.458.4
Running cost per year$14.60$14.60
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.