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Intel Xeon E5-2676 v3 vs Core2 Duo E8400

The Intel Xeon E5-2676 v3 @ 2.40GHz is newer than Intel Core2 Duo E8400 @ 3.00GHz and is significantly faster in multi-threaded (CPU Mark) testing, it is around 24% faster in single-thread testing. However, Intel Core2 Duo E8400 @ 3.00GHz uses substantially less power. The CPUs selected in this comparison belong in different CPU Classes: Server, Desktop. Consider, selecting CPUs from simliar CPU Class for more apt comparison.The values below were tabulated from a combined 7351 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 E5-2676 v3 @ 2.40GHz×Intel Core2 Duo E8400 @ 3.00GHz+ ADD
Price Search Online Search Online
Socket TypeLGA2011-v3LGA775
CPU ClassServerDesktop
Clockspeed2.4 GHz3.0 GHz
Turbo SpeedUp to 3.0 GHzNot Supported
# of Physical Cores12 (Threads: 24)2 (Threads: 2)
CacheL1: 768KB, L2: 3.0MB, L3: 30MBL1: 128KB, L2: 6.0MB, L3: 0MB
TDP120W65W
Yearly Running Cost$21.90$11.86
Other
First Seen on ChartQ4 2015Q4 2008
# of Samples547297
CPU Value0.052.5
Single Thread Rating(% diff. to max in group)1626(0.0%)12333(-24.2%)
CPU Mark(% diff. to max in group)13439(0.0%)1210(-91.0%)
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 4th of April 2025 - Higher results represent better performance
Intel Xeon E5-2676 v3 @ 2.40GHz
13,439
Intel Core2 Duo E8400 @ 3.00GHz
1,210
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 4th of April 2025 - Higher results represent better value
Intel Xeon E5-2676 v3 @ 2.40GHz
NA
Intel Core2 Duo E8400 @ 3.00GHz
52.5
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 4th of April 2025 - Higher results represent better performance
Intel Xeon E5-2676 v3 @ 2.40GHz
1,626
Intel Core2 Duo E8400 @ 3.00GHz
1,233
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 E5-2676 v3 @ 2.40GHz Intel Core2 Duo E8400 @ 3.00GHz
Max TDP120W65W
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.