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Intel Core2 Duo E8235 vs Core2 Duo P8400

The Intel Core2 Duo E8235 @ 2.80GHz is newer than Intel Core2 Duo P8400 @ 2.26GHz and is around 18% faster in multi-threaded (CPU Mark) testing. The Intel Core2 Duo E8235 @ 2.80GHz is around 21% faster in single-thread testing. Also, Intel Core2 Duo E8235 @ 2.80GHz uses substantially less power. All the CPUs in this comparison belong in the Laptop CPU Class. The values below were tabulated from a combined 1322 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 E8235 @ 2.80GHz×Intel Core2 Duo P8400 @ 2.26GHz+ ADD
Price Search Online Search Online
Socket TypeSocket PBGA479
CPU ClassLaptopLaptop
Clockspeed2.8 GHz2.3 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores2 (Threads: 2)2 (Threads: 2)
CacheL1: 128KB, L2: 6.0MB, L3: 0MBL1: 128KB, L2: 3.0MB, L3: 0MB
TDPNA225W
Yearly Running CostNA$4.56
Other
First Seen on ChartQ1 2009Q4 2008
# of Samples241298
CPU Rank44404618
CPU Value0.02.9
Single Thread Rating(% diff. to max in group)11123(0.0%)9183(-17.4%)
CPU Mark(% diff. to max in group)1020(0.0%)866(-15.1%)
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 13th of February 2026 - Higher results represent better performance
Intel Core2 Duo E8235 @ 2.80GHz
1,020
Intel Core2 Duo P8400 @ 2.26GHz
866
PassMark Software © 2008-2026
CPU Value (CPU Mark / $Price)
As of 13th of February 2026 - Higher results represent better value
Intel Core2 Duo E8235 @ 2.80GHz
NA
Intel Core2 Duo P8400 @ 2.26GHz
2.9
PassMark Software © 2008-2026
CPU Single Thread Rating
As of 13th of February 2026 - Higher results represent better performance
Intel Core2 Duo E8235 @ 2.80GHz
1,112
Intel Core2 Duo P8400 @ 2.26GHz
918
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 E8235 @ 2.80GHz Intel Core2 Duo P8400 @ 2.26GHz
Max TDPNA25W
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.