Athlon II X4 645 vs Phenom II X6 1100T BE

Place in the ranking	1506	2167
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	3.30
Market segment	Desktop processor	Desktop processor
Power efficiency	2.74	1.48
Architecture codename	Thuban (2010)	Propus (2009−2011)
Release date	7 December 2010 (14 years ago)	21 September 2010 (14 years ago)
Launch price (MSRP)	no data	$80

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Phenom II X6 1100T BE and Athlon II X4 645 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	3.3 GHz	3.1 GHz
Boost clock speed	3.7 GHz	3.1 GHz
L1 cache	128 KB (per core)	128 KB (per core)
L2 cache	512 KB (per core)	512 KB (per core)
L3 cache	6 MB (shared)	0 KB
Chip lithography	45 nm	45 nm
Die size	346 mm²	169 mm²
Number of transistors	904 million	300 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	+	-

Compatibility

Information on Phenom II X6 1100T BE and Athlon II X4 645 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	AM3
Power consumption (TDP)	125 Watt	95 Watt

Memory specs

Types, maximum amount and channel quantity of RAM supported by Phenom II X6 1100T BE and Athlon II X4 645. 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 1100T BE and Athlon II X4 645.

PCIe version

2.0

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 1100T BE 3.62
+145%

Athlon II X4 645 1.48

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 1100T BE 5745
+144%

Athlon II X4 645 2351

Gaming performance

Pros & cons summary

Performance score	3.62	1.48
Recency	7 December 2010	21 September 2010
Physical cores	6	4
Threads	6	4
Power consumption (TDP)	125 Watt	95 Watt

Phenom II X6 1100T BE has a 144.6% higher aggregate performance score, an age advantage of 2 months, and 50% more physical cores and 50% more threads.

Athlon II X4 645, on the other hand, has 31.6% lower power consumption.

The Phenom II X6 1100T BE is our recommended choice as it beats the Athlon II X4 645 in performance tests.

Should you still have questions on choice between Phenom II X6 1100T BE and Athlon II X4 645, ask them in Comments section, and we shall answer.