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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel Core2 Duo E8400 vs Core2 Quad Q9650 vs i7-14700K

All the CPUs in this comparison belong in the Desktop CPU Class.The values below were tabulated from a combined 13282 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 E8400 @ 3.00GHz×Intel Core2 Quad Q9650 @ 3.00GHz×Intel Core i7-14700K+ ADD
Price $23.03 - BUY Search Online $319 - BUY
Socket TypeLGA775LGA775FCLGA1700
CPU ClassDesktopDesktopDesktop
Clockspeed3.0 GHz3.0 GHz3.4 GHz
Turbo SpeedNot SupportedNot SupportedUp to 5.6 GHz
# of Physical Cores2 (Threads: 2)4 (Threads: 4)20 (Threads: 28)
CacheL1: 128KB, L2: 6.0MB, L3: 0MBL1: 256KB, L2: 12.0MB, L3: 0MBL1: 1,792KB, L2: 28.0MB, L3: 33MB
TDP65W95W125W
Yearly Running Cost$11.86$17.34$22.81
OtherIntel UHD Graphics 770
First Seen on ChartQ4 2008Q4 2008Q4 2023
# of Samples730818024172
CPU Value52.545.6165.2
Single Thread Rating(% diff. to max in group)12343(-72.5%)1282(-71.4%)4478(0.0%)
CPU Mark(% diff. to max in group)1210(-97.7%)2483(-95.3%)52712(0.0%)
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 17th of April 2025 - Higher results represent better performance
Intel Core2 Duo E8400 @ 3.00GHz
1,210
Intel Core2 Quad Q9650 @ 3.00GHz
2,483
Intel Core i7-14700K
52,712
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 17th of April 2025 - Higher results represent better value
Intel Core2 Duo E8400 @ 3.00GHz
52.5
Intel Core2 Quad Q9650 @ 3.00GHz
45.6
Intel Core i7-14700K
165.2
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 17th of April 2025 - Higher results represent better performance
Intel Core2 Duo E8400 @ 3.00GHz
1,234
Intel Core2 Quad Q9650 @ 3.00GHz
1,282
Intel Core i7-14700K
4,478
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 Core2 Duo E8400 @ 3.00GHz Intel Core2 Quad Q9650 @ 3.00GHz Intel Core i7-14700K
Max TDP65W95W125W
Power consumption per day (kWh)NANANA
Running cost per dayNANANA
Power consumption per year (kWh)NANANA
Running cost per yearNANANA
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.