Athlon II X4 631 vs Athlon II X4 651

Place in the ranking	1810	2238
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Desktop processor
Power efficiency	2.13	1.27
Architecture codename	Llano (2011−2012)	Llano (2011−2012)
Release date	14 November 2011 (12 years ago)	17 August 2011 (13 years ago)

Detailed specifications

Athlon II X4 651 and Athlon II X4 631 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	4 (Quad-Core)	4 (Quad-Core)
Threads	4	4
Base clock speed	3 GHz	2.6 GHz
Boost clock speed	3 GHz	2.6 GHz
L1 cache	128 KB (per core)	128 KB (per core)
L2 cache	1 MB (per core)	1 MB (per core)
L3 cache	0 KB	0 KB
Chip lithography	32 nm	32 nm
Die size	228 mm²	228 mm²
Number of transistors	1,178 million	1,178 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Athlon II X4 651 and Athlon II X4 631 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	1	1
Socket	FM1	FM1
Power consumption (TDP)	100 Watt	100 Watt

Virtualization technologies

Virtual machine speed-up technologies supported by Athlon II X4 651 and Athlon II X4 631 are enumerated here.

AMD-V

Memory specs

Types, maximum amount and channel quantity of RAM supported by Athlon II X4 651 and Athlon II X4 631. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR3

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Athlon II X4 651 2.34
+68.3%

Athlon II X4 631 1.39

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Athlon II X4 651 3584
+68.9%

Athlon II X4 631 2122

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

Athlon II X4 651 333
+19.8%

Athlon II X4 631 278

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

Athlon II X4 651 1108
+27.9%

Athlon II X4 631 866