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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel Core2 Extreme X7900 @ 2.80GHz vs Intel Core2 Duo P8400 @ 2.26GHz

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

×Intel Core2 Extreme X7900 @ 2.80GHz×Intel Core2 Duo P8400 @ 2.26GHz+ ADD
Price$159.951$297.011
Socket TypePGA478BGA479
CPU ClassLaptopLaptop
Clockspeed2.8 GHz2.3 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores2 (Threads: 2)2 (Threads: 2)
Max TDP44W25W
Yearly Running Cost$8.03$4.56
First Seen on ChartQ1 2009Q4 2008
# of Samples381229
Cross-Platform Rating02187
Single Thread Rating104039283
CPU Mark1018831
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.
3 - Single thread rating may be higher than the overall rating, thread performance is just one component of the CPU Mark.

CPU Mark Rating
As of 23rd of October 2021 - Higher results represent better performance
Intel Core2 Extreme X7900 @ 2.80GHz
1,018
Intel Core2 Duo P8400 @ 2.26GHz
831
CPU Value (CPU Mark / $Price)
As of 23rd of October 2021 - Higher results represent better value
Intel Core2 Extreme X7900 @ 2.80GHz
6.37
Intel Core2 Duo P8400 @ 2.26GHz
2.80
CPU Single Thread Rating
As of 23rd of October 2021 - Higher results represent better performance
Intel Core2 Extreme X7900 @ 2.80GHz
1,040
Intel Core2 Duo P8400 @ 2.26GHz
928

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 Core2 Extreme X7900 @ 2.80GHzIntel Core2 Duo P8400 @ 2.26GHz
Max TDP44W25W
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.