Athlon 64 X2 3600+ vs Athlon II X4 651

Place in the ranking	1831	3009
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Desktop processor
Power efficiency	2.14	0.43
Architecture codename	Llano (2011−2012)	Manchester (2005−2006)
Release date	14 November 2011 (13 years ago)	31 May 2005 (19 years ago)

Detailed specifications

Athlon II X4 651 and Athlon 64 X2 3600+ 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)	2 (Dual-core)
Threads	4	2
Base clock speed	3 GHz	no data
Boost clock speed	3 GHz	2 GHz
L1 cache	128 KB (per core)	128 KB (per core)
L2 cache	1 MB (per core)	256 KB (per core)
L3 cache	0 KB	0 KB
Chip lithography	32 nm	90 nm
Die size	228 mm²	156 mm²
Number of transistors	1,178 million	154 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Athlon II X4 651 and Athlon 64 X2 3600+ 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	939
Power consumption (TDP)	100 Watt	89 Watt

Virtualization technologies

Virtual machine speed-up technologies supported by Athlon II X4 651 and Athlon 64 X2 3600+ are enumerated here.

AMD-V

Memory specs

Types, maximum amount and channel quantity of RAM supported by Athlon II X4 651 and Athlon 64 X2 3600+. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR3

DDR1

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

On certain motherboards (Chipset feature)

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 2.26
+465%

Athlon 64 X2 3600+ 0.40

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
+466%

Athlon 64 X2 3600+ 633

Gaming performance

Pros & cons summary

Performance score	2.26	0.40
Recency	14 November 2011	31 May 2005
Physical cores	4	2
Threads	4	2
Chip lithography	32 nm	90 nm
Power consumption (TDP)	100 Watt	89 Watt

Athlon II X4 651 has a 465% higher aggregate performance score, an age advantage of 6 years, 100% more physical cores and 100% more threads, and a 181.3% more advanced lithography process.

Athlon 64 X2 3600+, on the other hand, has 12.4% lower power consumption.

The Athlon II X4 651 is our recommended choice as it beats the Athlon 64 X2 3600+ in performance tests.

Should you still have questions on choice between Athlon II X4 651 and Athlon 64 X2 3600+, ask them in Comments section, and we shall answer.