Athlon II X4 651 vs Phenom II X6 1065T

Place in the ranking	1855	1815
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Desktop processor
Power efficiency	1.61	2.14
Architecture codename	Thuban (2010)	Llano (2011−2012)
Release date	7 December 2010 (13 years ago)	14 November 2011 (13 years ago)

Detailed specifications

Phenom II X6 1065T and Athlon II X4 651 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	6 (Hexa-Core)	4 (Quad-Core)
Threads	6	4
Base clock speed	2.9 GHz	3 GHz
Boost clock speed	3.4 GHz	3 GHz
L1 cache	128 KB (per core)	128 KB (per core)
L2 cache	512 KB (per core)	1 MB (per core)
L3 cache	6 MB (shared)	0 KB
Chip lithography	45 nm	32 nm
Die size	346 mm²	228 mm²
Number of transistors	904 million	1,178 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Phenom II X6 1065T and Athlon II X4 651 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	AM3	FM1
Power consumption (TDP)	125 Watt	100 Watt

Virtualization technologies

Virtual machine speed-up technologies supported by Phenom II X6 1065T and Athlon II X4 651 are enumerated here.

AMD-V

Memory specs

Types, maximum amount and channel quantity of RAM supported by Phenom II X6 1065T and Athlon II X4 651. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR3

Peripherals

Specifications and connection of peripherals supported by Phenom II X6 1065T and Athlon II X4 651.

PCIe version

2.0

no data

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.

Phenom II X6 1065T 2.13

Athlon II X4 651 2.26
+6.1%

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.

Phenom II X6 1065T 3387

Athlon II X4 651 3584
+5.8%

Gaming performance

Pros & cons summary

Performance score	2.13	2.26
Recency	7 December 2010	14 November 2011
Physical cores	6	4
Threads	6	4
Chip lithography	45 nm	32 nm
Power consumption (TDP)	125 Watt	100 Watt

Phenom II X6 1065T has 50% more physical cores and 50% more threads.

Athlon II X4 651, on the other hand, has a 6.1% higher aggregate performance score, an age advantage of 11 months, a 40.6% more advanced lithography process, and 25% lower power consumption.

Given the minimal performance differences, no clear winner can be declared between Phenom II X6 1065T and Athlon II X4 651.

Should you still have questions on choice between Phenom II X6 1065T and Athlon II X4 651, ask them in Comments section, and we shall answer.