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CPU Benchmarks

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Intel Core2 Extreme Q9300 vs Core2 Quad Q9550

The Intel Core2 Extreme Q9300 @ 2.53GHz is newer than Intel Core2 Quad Q9550 @ 2.83GHz and is around -19% slower in multi-threaded (CPU Mark) testing. The Intel Core2 Extreme Q9300 @ 2.53GHz is around -15% slower in single-thread testing. Also, Intel Core2 Extreme Q9300 @ 2.53GHz uses substantially less power. All the CPUs in this comparison belong in the Desktop CPU Class. The values below were tabulated from a combined 4391 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 Extreme Q9300 @ 2.53GHz×Intel Core2 Quad Q9550 @ 2.83GHz+ ADD
Price Search Online $323 - BUY
Socket TypePGA478LGA775
CPU ClassDesktopDesktop
Clockspeed2.5 GHz2.8 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores4 (Threads: 4)4 (Threads: 4)
CacheL1: 256KB, L2: 12.0MB, L3: 0MBL1: 256KB, L2: 12.0MB, L3: 0MB
TDP45W95W
Yearly Running Cost$8.21$17.34
Other
First Seen on ChartQ4 2008Q4 2008
# of Samples2124179
CPU Rank36653358
CPU Value0.07.3
Single Thread Rating(% diff. to max in group)1028(-15.5%)1216(0.0%)
CPU Mark(% diff. to max in group)1912(-19.4%)2372(0.0%)

CPU Mark Rating
As of 19th of February 2026 - Higher results represent better performance
Intel Core2 Extreme Q9300 @ 2.53GHz
1,912
Intel Core2 Quad Q9550 @ 2.83GHz
2,372
PassMark Software © 2008-2026
CPU Value (CPU Mark / $Price)
As of 19th of February 2026 - Higher results represent better value
Intel Core2 Extreme Q9300 @ 2.53GHz
NA
Intel Core2 Quad Q9550 @ 2.83GHz
7.3
PassMark Software © 2008-2026
CPU Single Thread Rating
As of 19th of February 2026 - Higher results represent better performance
Intel Core2 Extreme Q9300 @ 2.53GHz
1,028
Intel Core2 Quad Q9550 @ 2.83GHz
1,216
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 Extreme Q9300 @ 2.53GHz Intel Core2 Quad Q9550 @ 2.83GHz
Max TDP45W95W
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.