A8-3870K: specs and benchmarks

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Aggregate performance score

A8-3870K
2011
4 cores / 4 threads, 100 Watt
1.47

A8-3870K provides poor benchmark performance at 1.47% of a leader's which is a 96-core EPYC 9655P.

Summary

AMD started A8-3870K sales 20 December 2011. This is a Llano architecture desktop processor primarily aimed at office systems. It has 4 cores and 4 threads, and is based on 32 nm manufacturing technology, with a max turbo frequency of 3000 MHz and an unlocked multiplier.

Compatibility-wise, this is AMD Socket FM1 processor with a TDP of 100 Watt. It supports DDR3 memory.

Primary details

A8-3870K processor market type (desktop or notebook), architecture, sales start time and pricing.

Place in the ranking2175
Place by popularitynot in top-100
Market segmentDesktop processor
Power efficiency1.39of 100.00 (Ryzen Z1 Extreme)
Architecture codenameLlano (2011−2012)
Release date20 December 2011 (13 years ago)

Detailed specifications

Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.

Physical cores4 (Quad-Core)
Threads4
Base clock speed3 GHzof 4.7 GHz (FX-9590)
Boost clock speed3 GHzof 6.2 GHz (Core i9-14900KS)
L1 cache128 KB (per core)of 80 KB (EPYC 9965)
L2 cache1 MB (per core)of 2 MB (Xeon 6980P)
L3 cache0 KBof 1152 MB (EPYC 9684X)
Chip lithography32 nmof 3 nm (Apple M3 Max 16-Core)
Die size228 mm2
Number of transistors1,178 millionof 135,240 million (EPYC 9684X)
64 bit support+
Windows 11 compatibility-
Unlocked multiplier+

Compatibility

Information on A8-3870K compatibility with other computer components and devices: 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 configuration1of 8 (Opteron 842)
SocketFM1
Power consumption (TDP)100 Wattof 500 Watt (Xeon 6960P)

Virtualization technologies

Supported virtual machine optimization technologies. Some are specific to Intel only, some to AMD.

AMD-V+

Memory specs

Types, maximum amount and channel number of RAM supported by A8-3870K's memory controller. Depending on the motherboard, higher memory frequency may be supported.

Supported memory typesDDR3

Graphics specifications

General parameters of a GPU integrated into A8-3870K.

Integrated graphics cardAMD Radeon HD 6550D

Benchmark performance

Single-core and multi-core benchmark results of A8-3870K. Overall benchmark performance 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 1.47

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 2328

Gaming performance

Closest competitors

A8-3870K's performance relative to its closest rivals among desktop CPUs.


Intel equivalent

According to our data, the closest Intel alternative to A8-3870K is Core 2 Quad Q9550, which is nearly equal in speed and higher by 5 positions in our ranking.

Here are some closest Intel rivals to A8-3870K:

Similar processors

Here is our recommendation of several processors that are more or less close in performance to the one reviewed.

Recommended GPUs

People consider these graphics cards to be good for A8-3870K, according to our PC configuration statistics.

These are the fastest graphics cards for A8-3870K in our user configuration statistics. There is a total of 1639 configurations using A8-3870K in our database.

RTX 4090 GeForce RTX 4090
0.6% (10/1639)
RTX 4070 Ti GeForce RTX 4070 Ti
0.06% (1/1639)
RX 7900 XT Radeon RX 7900 XT
0.06% (1/1639)
RTX 3080 Ti GeForce RTX 3080 Ti
0.06% (1/1639)
RX 6900 XT Radeon RX 6900 XT
0.06% (1/1639)
RTX 3080 GeForce RTX 3080
0.06% (1/1639)
RX 7800 XT Radeon RX 7800 XT
0.1% (2/1639)
RX 7700 XT Radeon RX 7700 XT
0.2% (4/1639)
RTX 3060 Ti GeForce RTX 3060 Ti
0.06% (1/1639)

All comparisons with A8-3870K

Community ratings

Here is the rating given to the reviewed processor by our users. Let others know your opinion by rating it yourself.


4.1 214 votes

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Questions & comments

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