Phenom II X2 X620 BE vs Athlon II X4 645

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Primary details

Comparing Athlon II X4 645 and Phenom II X2 X620 BE processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking2167not rated
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation3.30no data
Market segmentDesktop processorLaptop
Seriesno data2x AMD Phenom II
Power efficiency1.47no data
Architecture codenamePropus (2009−2011)Champlain (2010−2011)
Release date21 September 2010 (14 years ago)12 May 2010 (14 years ago)
Launch price (MSRP)$80no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Athlon II X4 645 and Phenom II X2 X620 BE 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 cores4 (Quad-Core)2 (Dual-core)
Threads42
Base clock speed3.1 GHzno data
Boost clock speed3.1 GHz3.1 GHz
Bus rateno data3600 MHz
L1 cache128 KB (per core)no data
L2 cache512 KB (per core)2 MB
L3 cache0 KBno data
Chip lithography45 nm45 nm
Die size169 mm2no data
Number of transistors300 millionno data
64 bit support++
Windows 11 compatibility--

Compatibility

Information on Athlon II X4 645 and Phenom II X2 X620 BE 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 configuration1no data
SocketAM3S1
Power consumption (TDP)95 Watt45 Watt

Memory specs

Types, maximum amount and channel quantity of RAM supported by Athlon II X4 645 and Phenom II X2 X620 BE. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3no data

Peripherals

Specifications and connection of peripherals supported by Athlon II X4 645 and Phenom II X2 X620 BE.

PCIe version2.0no data

Pros & cons summary


Recency 21 September 2010 12 May 2010
Physical cores 4 2
Threads 4 2
Power consumption (TDP) 95 Watt 45 Watt

Athlon II X4 645 has an age advantage of 4 months, and 100% more physical cores and 100% more threads.

Phenom II X2 X620 BE, on the other hand, has 111.1% lower power consumption.

We couldn't decide between Athlon II X4 645 and Phenom II X2 X620 BE. We've got no test results to judge.

Note that Athlon II X4 645 is a desktop processor while Phenom II X2 X620 BE is a notebook one.


Should you still have questions on choice between Athlon II X4 645 and Phenom II X2 X620 BE, ask them in Comments section, and we shall answer.

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AMD Athlon II X4 645
Athlon II X4 645
AMD Phenom II X2 X620 BE
Phenom II X2 X620 BE

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Community ratings

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