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Intel Core2 Duo E6400 vs AMD Athlon 64 X2 Dual 5800+

The Intel Core2 Duo E6400 @ 2.13GHz is newer than AMD Athlon 64 X2 Dual Core 5800+ and is around 19% faster in multi-threaded (CPU Mark) testing. The Intel Core2 Duo E6400 @ 2.13GHz is around 9% faster in single-thread testing. Also, AMD Athlon 64 X2 Dual Core 5800+ uses around 31% more power. All the CPUs in this comparison belong in the Desktop CPU Class. The values below were tabulated from a combined 1092 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 Core2 Duo E6400 @ 2.13GHz×AMD Athlon 64 X2 Dual Core 5800++ ADD
Price Search Online Search Online
Socket TypeLGA775NA2
CPU ClassDesktopDesktop
Clockspeed2.1 GHz3.0 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores2 (Threads: 2)2 (Threads: 2)
CacheL1: 128KB, L2: 2.0MB, L3: 0MBL1: 256KB, L2: 1.0MB,
TDP65W89W
Yearly Running Cost$11.86$16.24
Other
First Seen on ChartQ1 2009Q1 2009
# of Samples106626
CPU Rank46514813
CPU Value25.821.8
Single Thread Rating(% diff. to max in group)8123(0.0%)7463(-8.1%)
CPU Mark(% diff. to max in group)774(0.0%)653(-15.6%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.
2 - Information not available. Do you know? Notify Us.
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 January 2026 - Higher results represent better performance
Intel Core2 Duo E6400 @ 2.13GHz
774
AMD Athlon 64 X2 Dual Core 5800+
653
PassMark Software © 2008-2026
CPU Value (CPU Mark / $Price)
As of 23rd of January 2026 - Higher results represent better value
Intel Core2 Duo E6400 @ 2.13GHz
25.8
AMD Athlon 64 X2 Dual Core 5800+
21.8
PassMark Software © 2008-2026
CPU Single Thread Rating
As of 23rd of January 2026 - Higher results represent better performance
Intel Core2 Duo E6400 @ 2.13GHz
812
AMD Athlon 64 X2 Dual Core 5800+
746
PassMark Software © 2008-2026
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 Core2 Duo E6400 @ 2.13GHz AMD Athlon 64 X2 Dual Core 5800+
Max TDP65W89W
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.