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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel Xeon E5645 @ 2.40GHz vs Intel Xeon E5649 @ 2.53GHz

The values for the CPUs below are determined from thousands of PerformanceTest benchmark results and are updated daily.

×Intel Xeon E5645 @ 2.40GHz×Intel Xeon E5649 @ 2.53GHz+ ADD
Price$40
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$1291
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)
Max TDP80W80W
Yearly Running Cost$14.60$14.60
First Seen on ChartQ2 2011Q2 2011
# of Samples8132
Cross-Platform Rating1150811981
Single Thread Rating11391176
CPU Mark49154936
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 27th of September 2021 - Higher results represent better performance
Intel Xeon E5645 @ 2.40GHz
4,915
Intel Xeon E5649 @ 2.53GHz
4,936
CPU Value (CPU Mark / $Price)
As of 27th of September 2021 - Higher results represent better value
Intel Xeon E5645 @ 2.40GHz
122.88
Intel Xeon E5649 @ 2.53GHz
38.27
CPU Single Thread Rating
As of 27th of September 2021 - Higher results represent better performance
Intel Xeon E5645 @ 2.40GHz
1,139
Intel Xeon E5649 @ 2.53GHz
1,176

Estimated Energy Usage Cost
Estimated Energy Adjustable Values
Average hours of use per dayAverage CPU Utilization (0-100%)1Power cost, $ per kWh2
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 @ 2.40GHzIntel Xeon E5649 @ 2.53GHz
Max TDP80W80W
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.