Pentium G640 vs A8-3870K

VS

Aggregate performance score

A8-3870K
2011
4 cores / 4 threads, 100 Watt
1.52
+72.7%

A8-3870K outperforms Pentium G640 by an impressive 73% based on our aggregate benchmark results.

Primary details

Comparing A8-3870K and Pentium G640 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking21562557
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data0.02
Market segmentDesktop processorDesktop processor
Power efficiency1.391.23
Architecture codenameLlano (2011−2012)Sandy Bridge (2011−2013)
Release date20 December 2011 (12 years ago)3 June 2012 (12 years ago)
Launch price (MSRP)no data$179

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

A8-3870K and Pentium G640 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 GHz2.8 GHz
Boost clock speed3 GHz2.8 GHz
Bus rateno data5 GT/s
L1 cache128 KB (per core)64 KB (per core)
L2 cache1 MB (per core)256 KB (per core)
L3 cache0 KB3 MB (shared)
Chip lithography32 nm32 nm
Die size228 mm2131 mm2
Maximum core temperatureno data69 °C
Number of transistors1,178 million504 million
64 bit support++
Windows 11 compatibility--
Unlocked multiplier+-

Compatibility

Information on A8-3870K and Pentium G640 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
SocketFM1FCLGA1155
Power consumption (TDP)100 Watt65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by A8-3870K and Pentium G640. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataIntel® SSE4.1, Intel® SSE4.2
AES-NI-+
AVX-+
Enhanced SpeedStep (EIST)no data+
Turbo Boost Technologyno data-
Hyper-Threading Technologyno data-
Idle Statesno data+
Thermal Monitoring-+
Flex Memory Accessno data+
FDIno data+
Fast Memory Accessno data+

Security technologies

A8-3870K and Pentium G640 technologies aimed at improving security, for example, by protecting against hacks.

TXTno data-
EDBno data+

Virtualization technologies

Virtual machine speed-up technologies supported by A8-3870K and Pentium G640 are enumerated here.

AMD-V+-
VT-dno data-
VT-xno data+
EPTno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by A8-3870K and Pentium G640. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR3
Maximum memory sizeno data32 GB
Max memory channelsno data2
Maximum memory bandwidthno data17 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardAMD Radeon HD 6550DIntel® HD Graphics for 2nd Generation Intel® Processors
Graphics max frequencyno data1.1 GHz

Graphics interfaces

Available interfaces and connections of A8-3870K and Pentium G640 integrated GPUs.

Number of displays supportedno data2

Peripherals

Specifications and connection of peripherals supported by A8-3870K and Pentium G640.

PCIe versionno data2.0

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.

A8-3870K 1.52
+72.7%
Pentium G640 0.88

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.

A8-3870K 2323
+72.2%
Pentium G640 1349

Gaming performance

Pros & cons summary


Performance score 1.52 0.88
Recency 20 December 2011 3 June 2012
Physical cores 4 2
Threads 4 2
Power consumption (TDP) 100 Watt 65 Watt

A8-3870K has a 72.7% higher aggregate performance score, and 100% more physical cores and 100% more threads.

Pentium G640, on the other hand, has an age advantage of 5 months, and 53.8% lower power consumption.

The A8-3870K is our recommended choice as it beats the Pentium G640 in performance tests.


Should you still have questions on choice between A8-3870K and Pentium G640, ask them in Comments section, and we shall answer.

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AMD A8-3870K
A8-3870K
Intel Pentium G640
Pentium G640

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Community ratings

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Questions & comments

Here you can ask a question about A8-3870K or Pentium G640, agree or disagree with our judgements, or report an error or mismatch.