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Intel Pentium Dual T2390 vs Core2 Duo P8400

The Intel Pentium Dual T2390 @ 1.86GHz is newer than Intel Core2 Duo P8400 @ 2.26GHz, while Intel Core2 Duo P8400 @ 2.26GHz is around 13% faster in multi-threaded (CPU Mark) testing, it is around 23% faster in single-thread testing. However, Intel Pentium Dual T2390 @ 1.86GHz uses around 33% more power. All the CPUs in this comparison belong in the Laptop CPU Class.The values below were tabulated from a combined 1278 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 Pentium Dual T2390 @ 1.86GHz×Intel Core2 Duo P8400 @ 2.26GHz+ ADD
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Socket TypePPGA478BGA479
CPU ClassLaptopLaptop
Clockspeed1.9 GHz2.3 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores2 (Threads: 2)2 (Threads: 2)
CacheNA2L1: 128KB, L2: 3.0MB, L3: 0MB
TDP35W25W
Yearly Running Cost$6.39$4.56
Other
First Seen on ChartQ3 2022Q4 2008
# of Samples11277
CPU Value0.02.9
Single Thread Rating(% diff. to max in group)712(-22.7%)9203(0.0%)
CPU Mark(% diff. to max in group)745(-12.8%)854(0.0%)
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 8th of January 2025 - Higher results represent better performance
Intel Pentium Dual T2390 @ 1.86GHz
745
Intel Core2 Duo P8400 @ 2.26GHz
854
CPU Value (CPU Mark / $Price)
As of 8th of January 2025 - Higher results represent better value
Intel Pentium Dual T2390 @ 1.86GHz
NA
Intel Core2 Duo P8400 @ 2.26GHz
2.9
CPU Single Thread Rating
As of 8th of January 2025 - Higher results represent better performance
Intel Pentium Dual T2390 @ 1.86GHz
712
Intel Core2 Duo P8400 @ 2.26GHz
920
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 Pentium Dual T2390 @ 1.86GHz Intel Core2 Duo P8400 @ 2.26GHz
Max TDP35W25W
Power consumption per day (kWh)0.070.05
Running cost per day$0.018$0.013
Power consumption per year (kWh)25.618.3
Running cost per year$6.39$4.56
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.