AMD Phenom II X4 840

Benchmarks for the AMD Phenom II X4 840 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 AMD Phenom II X4 840 Good for Gaming?

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

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AMD Phenom II X4 840

Description:

Class: Desktop

Socket: AM2+/AM3

Clockspeed: 3.2 GHz

Cores: 4 Threads: 4

Typical TDP: 95 W

Cache per CPU Package:
L1 Instruction Cache: 4 x 64 KB
L1 Data Cache: 4 x 64 KB
L2 Cache: 4 x 512 KB

Other names: AMD Phenom(tm) II X4 840 Processor

CPU First Seen on Charts: Q1 2011

CPUmark/$Price: 81.87

Overall Rank:
3320th fastest in multithreading out of 5810 CPUs
3123rd fastest in single threading out of 5810 CPUs
911th fastest in out of 1557 Desktop CPUs

Last Price Change: $30.00 USD (2023-04-09)

Average CPU Mark rating

Multithread Rating

2456

Single Thread Rating

1301

Samples: 737*
*Margin for error: Low

PerformanceTest V9
CPU Mark: 3,409
Thread: 1,087

CPU Test Suite Average Results for AMD Phenom II X4 840

Integer Math	7,606 MOps/Sec
Floating Point Math	5,621 MOps/Sec
Find Prime Numbers	10 Million Primes/Sec
Random String Sorting	6,959 Thousand Strings/Sec
Data Encryption	651.8 MBytes/Sec
Data Compression	56,128 KBytes/Sec
Physics	187 Frames/Sec
Extended Instructions	1,304 Million Matrices/Sec
Single Thread	1,301 MOps/Sec

From submitted results to PerformanceTest V10 as of 6th of March 2026.

CPU Mark Distribution for AMD Phenom II X4 840

Submitted Baseline Distribution Graph as of 4th of March 2026

From submitted results since PerformanceTest V10 as of 4th of March 2026.
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 6th of March 2026 - Higher results represent better performance
Processor	Average CPU Mark
Intel Core i9-14900K		58,427
Intel Core i9-13900K		58,262
AMD Ryzen 9 5900X		38,936
Apple M4 10 Core		23,678
AMD Ryzen 5 5600X		21,844
Intel Core i5-12400F		19,593
Intel Core i9-9900K @ 3.60GHz		18,076
AMD Ryzen 5 3600		17,677
Apple M2 8 Core 3500 MHz		15,644
Apple M1 8 Core 3200 MHz		14,131
AMD Phenom II X4 840		2,456

CPU Value (CPU Mark / $Price )
As of 6th of March 2026 - Higher results represent better value
Processor	CPU Mark / $Price
AMD Ryzen 5 5600X		227.54
AMD Ryzen 9 5900X		172.01
Intel Core i9-14900K		124.58
AMD Ryzen 5 3600		117.86
Intel Core i9-13900K		107.89
AMD Phenom II X4 840		81.87
Intel Core i9-9900K @ 3.60GHz		60.54
Intel Core i5-12400F		46.29
Apple M1 8 Core 3200 MHz		NA
Apple M2 8 Core 3500 MHz		NA
Apple M4 10 Core		NA

Single Thread Rating
As of 6th of March 2026 - Higher results represent better performance
Processor	Average Thread Rating
Intel Core i9-14900K		4,693
Intel Core i9-13900K		4,600
Apple M4 10 Core		4,514
Apple M2 8 Core 3500 MHz		3,886
Apple M1 8 Core 3200 MHz		3,675
Intel Core i5-12400F		3,490
AMD Ryzen 9 5900X		3,467
AMD Ryzen 5 5600X		3,365
Intel Core i9-9900K @ 3.60GHz		2,913
AMD Ryzen 5 3600		2,560
AMD Phenom II X4 840		1,301

Last 5 Baselines for AMD Phenom II X4 840
Most recent listed first
Baseline	CPU Mark
BL3226446 - Jan 19 2026		2514
BL3151829 - Dec 21 2025		2701
BL3115766 - Dec 08 2025		2801
BL2993839 - Oct 21 2025		2258
BL2993570 - Oct 21 2025		2832

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

Popular comparisons for AMD Phenom II X4 840
As of 6th of March 2026 - Higher results represent better performance
Processor	Average CPU Mark
AMD Phenom II X4 840		2,456
AMD Athlon II X3 455 vs AMD Phenom II X4 840		1,939 (-21.1%)
Intel Core2 Quad Q9400 @ 2.66GHz vs AMD Phenom II X4 840		2,159 (-12.1%)
Intel Core i3-2130 @ 3.40GHz vs AMD Phenom II X4 840		2,067 (-15.9%)
AMD Athlon II X4 630 vs AMD Phenom II X4 840		2,173 (-11.5%)
AMD Phenom II X4 970 vs AMD Phenom II X4 840		2,785 (+13.4%)
AMD FX-4100 Quad-Core vs AMD Phenom II X4 840		2,628 (+7.0%)
AMD A8-6500 APU vs AMD Phenom II X4 840		2,543 (+3.5%)
AMD Phenom II X4 920 vs AMD Phenom II X4 840		2,230 (-9.2%)
Intel Core2 Quad Q9450 @ 2.66GHz vs AMD Phenom II X4 840		2,203 (-10.3%)
Intel Core i3-2120 @ 3.30GHz vs AMD Phenom II X4 840		1,977 (-19.5%)
Intel Pentium G3220 @ 3.00GHz vs AMD Phenom II X4 840		1,887 (-23.2%)
Intel Core i3-2100 @ 3.10GHz vs AMD Phenom II X4 840		1,862 (-24.2%)

Is the AMD Phenom II X4 840 Good for Gaming?
As of 6th of March 2026 - Higher results represent better performance
Processor	Relative Gaming Score
AMD Ryzen 9 9900X3D		12,426
AMD Ryzen 7 9800X3D		12,123
AMD Ryzen 9 9950X3D		11,263
Intel Core Ultra 7 270K Plus		10,695
AMD Ryzen 5 7600X3D		10,524
AMD Ryzen 9 7900X3D		10,387
Intel Core Ultra 9 285K		10,373
Intel Core Ultra 9 290K Plus		10,291
AMD Ryzen 7 7800X3D		10,257
AMD Ryzen 5 7500X3D		10,188
AMD Ryzen 9 9955HX3D		9,793
Intel Core Ultra 7 265K		9,448
AMD Phenom II X4 840		260

CPU Benchmarks

CPU Benchmarks

AMD Phenom II X4 840

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CPU Test Suite Average Results for AMD Phenom II X4 840

CPU Mark Distribution for AMD Phenom II X4 840

Pricing History