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: 81.62

Overall Rank:
3196th fastest in multithreading out of 5447 CPUs
3019th fastest in single threading out of 5447 CPUs
885th fastest in out of 1475 Desktop CPUs

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

Average CPU Mark rating

Multithread Rating

2449

Single Thread Rating

1301

Samples: 734*
*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	7,595 MOps/Sec
Floating Point Math	5,615 MOps/Sec
Find Prime Numbers	10 Million Primes/Sec
Random String Sorting	6,975 Thousand Strings/Sec
Data Encryption	648.6 MBytes/Sec
Data Compression	56,088 KBytes/Sec
Physics	187 Frames/Sec
Extended Instructions	1,297 Million Matrices/Sec
Single Thread	1,301 MOps/Sec

From submitted results to PerformanceTest V10 as of 13th of November 2025.

CPU Mark Distribution for AMD Phenom II X4 840

Submitted Baseline Distribution Graph as of 12th of November 2025

From submitted results since PerformanceTest V10 as of 12th of November 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 14th of November 2025 - Higher results represent better performance
Processor	Average CPU Mark
Intel Core i9-14900K		58,565
Intel Core i9-13900K		58,416
AMD Ryzen 9 5900X		38,959
Apple M1 Max 10 Core 3200 MHz		22,152
AMD Ryzen 5 5600X		21,847
Intel Core i5-12400F		19,518
Intel Core i9-9900K @ 3.60GHz		18,116
AMD Ryzen 5 3600		17,687
Apple M2 8 Core 3500 MHz		15,652
Apple M1 8 Core 3200 MHz		14,146
AMD Phenom II X4 840		2,449

CPU Value (CPU Mark / $Price )
As of 14th of November 2025 - Higher results represent better value
Processor	CPU Mark / $Price
AMD Ryzen 5 3600		265.57
AMD Ryzen 5 5600X		170.70
Intel Core i5-12400F		153.20
AMD Ryzen 9 5900X		144.83
Intel Core i9-14900K		127.60
Intel Core i9-13900K		104.32
AMD Phenom II X4 840		81.62
Intel Core i9-9900K @ 3.60GHz		47.80
Apple M1 8 Core 3200 MHz		NA
Apple M2 8 Core 3500 MHz		NA
Apple M1 Max 10 Core 3200 MHz		NA

Single Thread Rating
As of 14th of November 2025 - Higher results represent better performance
Processor	Average Thread Rating
Intel Core i9-14900K		4,698
Intel Core i9-13900K		4,603
Apple M2 8 Core 3500 MHz		3,892
Apple M1 Max 10 Core 3200 MHz		3,834
Apple M1 8 Core 3200 MHz		3,678
Intel Core i5-12400F		3,485
AMD Ryzen 9 5900X		3,467
AMD Ryzen 5 5600X		3,364
Intel Core i9-9900K @ 3.60GHz		2,916
AMD Ryzen 5 3600		2,561
AMD Phenom II X4 840		1,301

Last 5 Baselines for AMD Phenom II X4 840
Most recent listed first
Baseline	CPU Mark
BL2993839 - Oct 21 2025		2258
BL2993570 - Oct 21 2025		2832
BL2869564 - Aug 28 2025		2727
BL2823281 - Aug 08 2025		2784
BL2780483 - Jul 21 2025		2750

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

Popular comparisons for AMD Phenom II X4 840
As of 14th of November 2025 - Higher results represent better performance
Processor	Average CPU Mark
AMD Phenom II X4 840		2,449
AMD Athlon II X3 455 vs AMD Phenom II X4 840		1,938 (-20.8%)
AMD FX-4170 Quad-Core vs AMD Phenom II X4 840		3,058 (+24.9%)
Intel Core2 Quad Q9400 @ 2.66GHz vs AMD Phenom II X4 840		2,160 (-11.8%)
Intel Core i3-2100 @ 3.10GHz vs AMD Phenom II X4 840		1,856 (-24.2%)
AMD Athlon II X4 630 vs AMD Phenom II X4 840		2,175 (-11.2%)
AMD Phenom II X4 970 vs AMD Phenom II X4 840		2,768 (+13.0%)
AMD FX-4100 Quad-Core vs AMD Phenom II X4 840		2,630 (+7.4%)
AMD A8-6500 APU vs AMD Phenom II X4 840		2,598 (+6.1%)
Intel Pentium G4400 @ 3.30GHz vs AMD Phenom II X4 840		2,556 (+4.4%)
Intel Core2 Quad Q9450 @ 2.66GHz vs AMD Phenom II X4 840		2,208 (-9.8%)
AMD Phenom II X4 920 vs AMD Phenom II X4 840		2,202 (-10.1%)
Intel Core i3-2120 @ 3.30GHz vs AMD Phenom II X4 840		1,976 (-19.3%)

Is the AMD Phenom II X4 840 Good for Gaming?
As of 14th of November 2025 - Higher results represent better performance
Processor	Relative Gaming Score
AMD Ryzen 9 9900X3D		12,414
AMD Ryzen 7 9800X3D		12,135
AMD Ryzen 9 9950X3D		11,252
AMD Ryzen 9 7900X3D		10,802
AMD Ryzen 5 7600X3D		10,506
Intel Core Ultra 9 285K		10,497
AMD Ryzen 7 7800X3D		10,271
AMD Ryzen 9 7950X3D		9,777
AMD Ryzen 9 9955HX3D		9,622
Intel Core Ultra 7 265K		9,498
Intel Core Ultra 9 285		9,487
Intel Core Ultra 5 245K		9,413
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