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AMD A8-6600K vs AMD A6-6400K

AMD A8-6600K

► remove from comparison AMD AMD A8-6600K

The AMD A8-6600K is a desktop APU from the Richland series. The chip is produced ​​in a 32nm process and integrates 2 modules with 4 CPU cores clocked at 3.9 to 4.2 GHz. Furthermore, the 6600K has a Radeon HD 8570D graphics unit and a DDR3-1866 memory controller. Due to the unlocked multiplier, the CPU can overclock very easily. Compared to the previous Trinity generation A10-5800K, the 6600K offers a similar clocked CPU (100 MHz higher base clock) and slightly slower GPU (less cores more clock rate). Otherwise, only small optimizations regarding power and turbo were made.

The CPU cores are based on a reworked Bulldozer architecture called Piledriver. Although marketed as a quad-core processor, the A8-6600K includes only two modules with four integer-cores and two floating-point units in total. As a result, the CPU is not a true quad-core processor.

Due to the similar core clock speed, the CPU performance of the A8-6600K is on a similar level as the old A10-5800K and therefore on average compareable to a Ivy Bridge Core i3 CPUs. The chip shows good performance on applications with high parallelization, whereas performance per thread is less impressive. For everyday tasks like Office, multimedia applications or Internet surfing, the 6600K is suitable without restrictions; even demanding 3D games are possible if paired with a dedicated graphics card.

The integrated DirectX 11-compatible Radeon HD 8570D offers only 256 of the 384 shader cores of the Richland chip and a core clock of 844 MHz with no Turbo support. 

The power consumption of the entire desktop APU is rated at 100 Watts.

AMD A6-6400K

► remove from comparison AMD AMD A6-6400K

The AMD A6-6400K is a desktop APU from the Richland series. The chip is produced ​​in a 32nm process and integrates 1 module with 2 CPU cores clocked at 3.9 to 4.1 GHz. Furthermore, the 6400K has a Radeon HD 8470D graphics unit and a DDR3-1600 memory controller. 

The CPU cores are based on a reworked Bulldozer architecture called Piledriver. Although marketed as a Dual-core processor, the A6-6400K includes only one module with two integer-cores and one floating-point unit in total. As a result, the CPU is not a true dual-core processor.

The CPU performance of the A6-6400K is about on a level of a 2.2 to 2.4 GHz Pentium processor of the Sandy Bridge generation.

The integrated DirectX 11-compatible Radeon HD 8470D offers only 192 of the 384 shader cores of the Richland chip and a core clock of 800 MHz with no Turbo support. 

The power consumption of the entire desktop APU is rated at 65 Watts.

ModelAMD A8-6600KAMD A6-6400K
SeriesAMD A-Series (Desktop)AMD A-Series (Desktop)
CodenameRichlandRichland
Series: A-Series (Desktop) Richland
AMD A10-6800K compare4.1 - 4.4 GHz4 / 4 cores
AMD A8-6600K « 3.9 - 4.2 GHz4 / 4 cores
AMD A6-6400K3.9 - 4.1 GHz2 / 2 cores
AMD A10-6800K compare4.1 - 4.4 GHz4 / 4 cores
AMD A8-6600K3.9 - 4.2 GHz4 / 4 cores
AMD A6-6400K « 3.9 - 4.1 GHz2 / 2 cores
Clock3900 - 4200 MHz3900 - 4100 MHz
L2 Cache4 MB4 MB
Cores / Threads4 / 42 / 2
TDP100 Watt65 Watt
Transistors1303 Million1303 Million
Technology32 nm32 nm
Die Size246 mm2246 mm2
max. Temp.74 °C
iGPUAMD Radeon HD 8570D (844 MHz)AMD Radeon HD 8470D (800 MHz)
Architecturex86x86
$142 U.S.
Announced
SocketFM2
FeaturesMMX, SSE1-4a, AES, ABM, AVX, BMI1, AMD64, VT, EVP, Turbo Core 3.0

Benchmarks

Cinebench R15 - Cinebench R15 CPU Multi 64 Bit
149 Points (1%)
Cinebench R15 - Cinebench R15 CPU Single 64 Bit
88 Points (27%)
Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
3.4 Points (4%)
1.7 Points (2%)
Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
1 Points (24%)
0.8 Points (21%)
Cinebench R10 - Cinebench R10 Rend. Single (32bit)
3230 Points (20%)
min: 3007     avg: 3068     median: 3067.5 (19%)     max: 3128 Points
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
8040 Points (6%)
min: 5063     avg: 5079     median: 5079 (4%)     max: 5095 Points
Cinebench R10 - Cinebench R10 Rend. Multi (64bit)
13343 Points (9%)
6868 Points (5%)
Cinebench R10 - Cinebench R10 Rend. Single (64bit)
4438 Points (5%)
4123 Points (5%)
wPrime 2.10 - wPrime 2.0 1024m *
545 s (6%)
wPrime 2.10 - wPrime 2.0 32m *
17.9 s (4%)
WinRAR - WinRAR 4.0
2595 Points (4%)
X264 HD Benchmark 4.0 - x264 Pass 2
22.2 fps (8%)
11.2 fps (4%)
X264 HD Benchmark 4.0 - x264 Pass 1
106 fps (24%)
56.9 fps (13%)
TrueCrypt - TrueCrypt Serpent
0.2 GB/s (0%)
0.1 GB/s (0%)
TrueCrypt - TrueCrypt Twofish
0.4 GB/s (7%)
0.2 GB/s (3%)
TrueCrypt - TrueCrypt AES
1.9 GB/s (5%)
1 GB/s (2%)
3DMark 06 - CPU - 3DMark 06 - CPU
4701 Points (10%)
2654 Points (6%)
Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
22.8 s (5%)
Super Pi mod 1.5 XS 2M - Super Pi mod 1.5 XS 2M *
52 s (2%)
Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
1351 s (6%)
3DMark Vantage - 3DM Vant. Perf. CPU no Physx
10723 Points (9%)
5122 Points (4%)
3DMark 11 - 3DM11 Performance Physics
3944 Points (11%)
1998 Points (5%)
3DMark - 3DMark Ice Storm Physics
39035 Points (32%)
11495 Points (9%)
3DMark - 3DMark Ice Storm Extreme Physics
39254 Points (32%)
11502 Points (9%)
3DMark - 3DMark Cloud Gate Physics
3106 Points (8%)
899 Points (2%)
3DMark - 3DMark Fire Strike Standard Physics
4535 Points (8%)
2268 Points (4%)
Geekbench 2 - 32 Bit - Geekbench Stream
5103 Points (41%)
Geekbench 2 - 32 Bit - Geekbench Memory
4061 Points (37%)
Geekbench 2 - 32 Bit - Geekbench Floating Point
6167 Points (12%)
Geekbench 2 - 32 Bit - Geekbench Integer
6685 Points (13%)
Geekbench 2 - 32 Bit - Geekbench Total Score
5820 Points (15%)
Sunspider - Sunspider 1.0 Total Score *
186 ms (2%)

Average Benchmarks AMD A8-6600K → 100% n=18

Average Benchmarks AMD A6-6400K → 55% n=18

- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation

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Redaktion, 2017-09- 8 (Update: 2023-07- 1)