AMD Athlon II X4 640 vs Intel Core i5-655K

#ad
Buy
VS

Combined performance score

i5-655K
1.31

Athlon II X4 640 outperforms Core i5-655K by 11% in our combined benchmark results.

General info

Comparing Core i5-655K and Athlon II X4 640 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking21292050
Place by popularitynot in top-100not in top-100
Value for money0.172.92
Market segmentDesktop processorDesktop processor
Architecture codenameClarkdale (2010−2011)Propus (2009−2011)
Release date30 May 2010 (13 years old)11 May 2010 (13 years old)
Launch price (MSRP)no data$80
Current price$59 $67 (0.8x MSRP)
Value for money

Performance per price, higher is better.

Athlon II X4 640 has 1618% better value for money than i5-655K.

Technical specs

Core i5-655K and Athlon II X4 640 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 cores2 (Dual-core)4 (Quad-Core)
Threads44
Base clock speed3.2 GHz3 GHz
Boost clock speed3.46 GHz3 GHz
L1 cache64 KB (per core)128 KB (per core)
L2 cache256 KB (per core)512 KB (per core)
L3 cache4 MB (shared)0 KB
Chip lithography32 nm45 nm
Die size81 mm2169 mm2
Maximum core temperature73 °Cno data
Number of transistors382 million300 million
64 bit support++
Windows 11 compatibility--
Unlocked multiplierYesNo

Compatibility

Information on Core i5-655K and Athlon II X4 640 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 configuration11
SocketFCLGA1156AM3
Power consumption (TDP)73 Watt95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-655K and Athlon II X4 640. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.2no data
AES-NI+no data
Enhanced SpeedStep (EIST)+no data
Turbo Boost Technology1.0no data
Hyper-Threading Technology+no data
Idle States+no data
Thermal Monitoring-no data
Demand Based Switching-no data
PAE36 Bitno data
FDI+no data
StatusDiscontinuedno data

Security technologies

Core i5-655K and Athlon II X4 640 technologies aimed at improving security, for example, by protecting against hacks.

TXT+no data
EDB+no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i5-655K and Athlon II X4 640 are enumerated here.

VT-d+no data
VT-x+no data
EPT+no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i5-655K and Athlon II X4 640. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR3
Maximum memory size16.38 GBno data
Max memory channels2no data
Maximum memory bandwidth21 GB/sno data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardIntel® HD Graphics for Previous Generation Intel® Processorsno data
Clear Video HD+no data

Graphics interfaces

Available interfaces and connections of Core i5-655K and Athlon II X4 640 integrated GPUs.

Number of displays supported2no data

Peripherals

Specifications and connection of peripherals supported by Core i5-655K and Athlon II X4 640.

PCIe version2.02.0
PCI Express lanes16no 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.

i5-655K 1.31
Athlon II X4 640 1.45
+10.7%

Athlon II X4 640 outperforms Core i5-655K by 11% in our combined benchmark results.


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.

Benchmark coverage: 68%

i5-655K 2017
Athlon II X4 640 2234
+10.8%

Athlon II X4 640 outperforms Core i5-655K by 11% in Passmark.

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.

Benchmark coverage: 42%

i5-655K 537
+73.2%
Athlon II X4 640 310

Core i5-655K outperforms Athlon II X4 640 by 73% in GeekBench 5 Single-Core.

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.

Benchmark coverage: 42%

i5-655K 1247
+32.7%
Athlon II X4 640 940

Core i5-655K outperforms Athlon II X4 640 by 33% in GeekBench 5 Multi-Core.

Gaming performance

Advantages and disadvantages


Performance score 1.31 1.45
Physical cores 2 4
Chip lithography 32 nm 45 nm
Power consumption (TDP) 73 Watt 95 Watt

The Athlon II X4 640 is our recommended choice as it beats the Core i5-655K in performance tests.


Should you still have questions on choice between Core i5-655K and Athlon II X4 640, ask them in Comments section, and we shall answer.

User ratings

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.


Intel Core i5-655K
Core i5-655K
AMD Athlon II X4 640
Athlon II X4 640

Similar processor comparisons

We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.

User ratings: view and submit

Here you can see how users rate the processors, as well as rate them yourself.


3.6 11 votes

Rate Intel Core i5-655K on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
3.7 1229 votes

Rate AMD Athlon II X4 640 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions and comments

Here you can ask a question about Core i5-655K or Athlon II X4 640, agree or disagree with our judgements, or report an error or mismatch.