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Over 1,000,000 CPUs benchmarked

Intel i7-975 vs i7-940

The Intel Core i7-975 @ 3.33GHz is newer than Intel Core i7-940 @ 2.93GHz and is around 16% faster in multi-threaded (CPU Mark) testing. The Intel Core i7-975 @ 3.33GHz is around 13% faster in single-thread testing. Both CPUs operates at simliar power levels (TDP). All the CPUs in this comparison belong in the Desktop CPU Class. The values below were tabulated from a combined 701 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 Core i7-975 @ 3.33GHz×Intel Core i7-940 @ 2.93GHz+ ADD
Price Search Online Search Online
Socket TypeLGA1366LGA1366
CPU ClassDesktopDesktop
Clockspeed3.3 GHz2.9 GHz
Turbo SpeedUp to 3.6 GHzUp to 3.2 GHz
# of Physical Cores4 (Threads: 8)4 (Threads: 8)
CacheL1: 256KB, L2: 1.0MB, L3: 8MBL1: 256KB, L2: 1.0MB, L3: 8MB
TDP130W130W
Yearly Running Cost$23.73$23.73
Other
First Seen on ChartQ2 2009Q4 2008
# of Samples414287
CPU Rank27622982
CPU Value7.78.8
Single Thread Rating(% diff. to max in group)1498(0.0%)1325(-11.5%)
CPU Mark(% diff. to max in group)3532(0.0%)3050(-13.6%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 8th of February 2026 - Higher results represent better performance
Intel Core i7-975 @ 3.33GHz
3,532
Intel Core i7-940 @ 2.93GHz
3,050
PassMark Software © 2008-2026
CPU Value (CPU Mark / $Price)
As of 8th of February 2026 - Higher results represent better value
Intel Core i7-975 @ 3.33GHz
7.7
Intel Core i7-940 @ 2.93GHz
8.8
PassMark Software © 2008-2026
CPU Single Thread Rating
As of 8th of February 2026 - Higher results represent better performance
Intel Core i7-975 @ 3.33GHz
1,498
Intel Core i7-940 @ 2.93GHz
1,325
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 Core i7-975 @ 3.33GHz Intel Core i7-940 @ 2.93GHz
Max TDP130W130W
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.