Intel Core2 Quad Q8400 @ 2.66GHz

Benchmarks for the Intel Core2 Quad Q8400 can be found below. Release dates, price and performance comparisons are also listed when available. This is made using thousands of PerformanceTest benchmark results and is updated daily.

The first graph shows the relative performance of the CPU compared to the 10 other common (single) CPUs in terms of PassMark CPU Mark.
The 2nd graph shows the value for money, in terms of the CPUMark per dollar.
The pricing history data shows the price for a single Processor. For multiple Processors, multiply the price shown by the number of CPUs.

Is the Intel Core2 Quad Q8400 @ 2.66GHz Good for Gaming?

This is a fairly old CPU that is no longer competitive with newer CPUs. [More ...]

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Intel Core2 Quad Q8400 @ 2.66GHz

Description:

Class: Desktop

Socket: LGA775

Clockspeed: 2.7 GHz

Cores: 4 Threads: 4

Typical TDP: 95 W

Cache per CPU Package:
L1 Instruction Cache: 4 x 32 KB
L1 Data Cache: 4 x 32 KB
L2 Cache: 2 x 2048 KB

Other names: Intel(R) Core(TM)2 Quad CPU Q8400 @ 2.66GHz, Intel(R) Core(TM)2 Quad CPU Q8400 @ 2.66GHz, Intel Core2 Quad CPU Q8400 @ 2.66GHz

CPU First Seen on Charts: Q2 2009

CPUmark/$Price: 16.06

Overall Rank:
3177th fastest in multithreading out of 5119 CPUs
3116th fastest in single threading out of 5119 CPUs
941st fastest in out of 1446 Desktop CPUs

Last Price Change: $128.88 USD (2021-01-23)

Average CPU Mark rating

Multithread Rating

2070

Single Thread Rating

1141

Samples: 1655*
*Margin for error: Low

PerformanceTest V9
CPU Mark: 3,007
Thread: 1,101

CPU Test Suite Average Results for Intel Core2 Quad Q8400 @ 2.66GHz

Integer Math	9,911 MOps/Sec
Floating Point Math	5,611 MOps/Sec
Find Prime Numbers	7 Million Primes/Sec
Random String Sorting	6,072 Thousand Strings/Sec
Data Encryption	549.5 MBytes/Sec
Data Compression	46,125 KBytes/Sec
Physics	147 Frames/Sec
Extended Instructions	813 Million Matrices/Sec
Single Thread	1,141 MOps/Sec

From submitted results to PerformanceTest V10 as of 15th of May 2025.

CPU Mark Distribution for Intel Core2 Quad Q8400 @ 2.66GHz

Submitted Baseline Distribution Graph as of 13th of May 2025

From submitted results since PerformanceTest V10 as of 13th of May 2025.
For distribution graph only: Results are trimmed to exclude outliers by disregarding the bottom 1% and top 1% of submissions.

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Pricing History

CPU Mark Relative to Top 10 Common Desktop CPUs
As of 15th of May 2025 - Higher results represent better performance
Processor	Average CPU Mark
Intel Core i9-13900K		58,704
Intel Core i9-12900K		41,315
AMD Ryzen 9 5900X		39,033
Apple M1 Max 10 Core 3200 MHz		22,137
AMD Ryzen 5 5600X		21,864
Intel Core i5-12400F		19,475
Intel Core i9-9900K @ 3.60GHz		18,176
AMD Ryzen 5 3600		17,710
Apple M2 8 Core 3500 MHz		15,658
Apple M1 8 Core 3200 MHz		14,146
Intel Core2 Quad Q8400 @ 2.66GHz		2,070

CPU Value (CPU Mark / $Price )
As of 15th of May 2025 - Higher results represent better value
Processor	CPU Mark / $Price
Intel Core i9-13900K		147.89
Intel Core i9-12900K		139.11
Intel Core i9-9900K @ 3.60GHz		51.93
Intel Core2 Quad Q8400 @ 2.66GHz		16.06
Apple M1 8 Core 3200 MHz		NA
Apple M2 8 Core 3500 MHz		NA
Apple M1 Max 10 Core 3200 MHz		NA
AMD Ryzen 5 3600		NA
AMD Ryzen 5 5600X		NA
AMD Ryzen 9 5900X		NA
Intel Core i5-12400F		NA

Single Thread Rating
As of 15th of May 2025 - Higher results represent better performance
Processor	Average Thread Rating
Intel Core i9-13900K		4,611
Intel Core i9-12900K		4,141
Apple M2 8 Core 3500 MHz		3,903
Apple M1 Max 10 Core 3200 MHz		3,836
Apple M1 8 Core 3200 MHz		3,680
Intel Core i5-12400F		3,479
AMD Ryzen 9 5900X		3,470
AMD Ryzen 5 5600X		3,363
Intel Core i9-9900K @ 3.60GHz		2,921
AMD Ryzen 5 3600		2,563
Intel Core2 Quad Q8400 @ 2.66GHz		1,141

Last 5 Baselines for Intel Core2 Quad Q8400 @ 2.66GHz
Most recent listed first
Baseline	CPU Mark
BL2616885 - May 11 2025		2292
BL2616840 - May 11 2025		2272
BL2545132 - Apr 10 2025		2137
BL2515240 - Mar 28 2025		1719
BL2487884 - Mar 17 2025		2151

Additional baselines can be obtained using Windows version of PerformanceTest's Manage Baselines feature.

Popular comparisons for Intel Core2 Quad Q8400 @ 2.66GHz
As of 15th of May 2025 - Higher results represent better performance
Processor	Average CPU Mark
Intel Core2 Quad Q8400 @ 2.66GHz		2,070
AMD Phenom II X4 910 vs Intel Core2 Quad Q8400		1,776 (-14.2%)
AMD Phenom 9850 Quad-Core vs Intel Core2 Quad Q8400		1,712 (-17.3%)
Intel Core2 Quad Q6700 @ 2.66GHz vs Intel Core2 Quad Q8400		2,096 (+1.3%)
Intel Core i3-2120 @ 3.30GHz vs Intel Core2 Quad Q8400		1,966 (-5.0%)
AMD Athlon II X3 435 vs Intel Core2 Quad Q8400		1,633 (-21.1%)
AMD Phenom II X4 955 vs Intel Core2 Quad Q8400		2,536 (+22.5%)
Intel Core i5-750 @ 2.67GHz vs Intel Core2 Quad Q8400		2,535 (+22.5%)
Intel Core2 Quad Q9650 @ 3.00GHz vs Intel Core2 Quad Q8400		2,486 (+20.1%)
AMD Athlon II X4 651 Quad-Core vs Intel Core2 Quad Q8400		2,443 (+18.0%)
Intel Core i5-660 @ 3.33GHz vs Intel Core2 Quad Q8400		2,420 (+16.9%)
AMD Phenom II X4 945 vs Intel Core2 Quad Q8400		2,412 (+16.5%)
AMD A6-3650 APU vs Intel Core2 Quad Q8400		2,090 (+0.9%)

Is the Intel Core2 Quad Q8400 @ 2.66GHz Good for Gaming?
As of 15th of May 2025 - Higher results represent better performance
Processor	Relative Gaming Score
AMD Ryzen 9 9900X3D		12,494
AMD Ryzen 7 9800X3D		12,158
AMD Ryzen 9 9950X3D		11,322
AMD Ryzen 9 7900X3D		10,847
Intel Core Ultra 9 285K		10,594
AMD Ryzen 5 7600X3D		10,513
AMD Ryzen 7 7800X3D		10,285
AMD Ryzen 9 7950X3D		9,811
Intel Core Ultra 5 245K		9,682
Intel Core Ultra 7 265K		9,531
Intel Core Ultra 9 285		9,447
Intel Core Ultra 7 265KF		9,405
Intel Core2 Quad Q8400 @ 2.66GHz		155

CPU Benchmarks

CPU Benchmarks

Intel Core2 Quad Q8400 @ 2.66GHz

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CPU Test Suite Average Results for Intel Core2 Quad Q8400 @ 2.66GHz

CPU Mark Distribution for Intel Core2 Quad Q8400 @ 2.66GHz

Pricing History