AMD A8-4557M vs AMD A6-4400M

AMD A8-4557M

► remove AMD A8-4557M

The AMD A8-4557M is a mobile quad-core processor based on the Trinity architecture and the direct successor to the Llano A-series of APUs (Accelerated Processing Unit). The processing unit is manufactured in 32nm SOI and integrates a 1.9 GHz CPU (up to 2.8 GHz w/ Turbo Core) with a relatively fast Radeon HD 7640G GPU alongside a dual-channel memory controller, video decoders and a northbridge. The A8-4557M is the BGA version of the A8-4500M.

The CPU cores are based on a reworked Bulldozer architecture called Piledriver. Although marketed as a quad-core processor, the A8-4557M includes only two modules with four integer-cores and two floating-point cores total. As a result, the CPU is not a true quad-core processor.

When compared to previous Bulldozer cores, AMD has managed to improve upon the IPC (instructions per clock) performance of Trinity cores while allowing for higher clock frequencies. However, when compared to its Llano predecessor, the multithreaded performance of Trinity has only been slightly improved. The enhanced Turbo Core 3.0 feature performs well in speeding up single-threaded applications, although it still underperforms compared to Intel’s Turbo Boost equivalent. Regardless, AMD has managed to include other features as well, such as the AVX extension (including FMA) and support for AES encryption.

In terms of raw general performance, the A8-4557M performs similarly to the Llano-based A8-3500M. Single-threaded workloads can especially benefit from the new architecture and the updated Turbo Core functionality. If compared to Intel's Core-i3 series, the A8-4557M offers less performance in most cases. Nonetheless, CPU performance from the AMD processor should be sufficient for all daily workloads like Office, Internet browsing and even light video editing or gaming.

The integrated DirectX 11-compatible Radeon HD 7640G offers only 256 shader cores of the Trinity chip (7660G: 384) and, thanks to Turbo Core, will operate anywhere between 497 to 686 MHz depending on the current application demand. On average, the performance of the HD 7640G GPU is comparable to a dedicated Radeon HD 7610M and is faster than the HD Graphics 4000 as found on Intel’s Ivy Bridge platform.

The power consumption of the A8-4557M APU is rated at 35 Watt TDP and is therefore comparable to mid-range dual-core Ivy Bridge processors. Consequently, the A8-4557M is best suited for 14-inch notebooks or larger.

AMD A6-4400M

► remove AMD A6-4400M

The AMD A6-4400M is a mobile dual-core processor based on the Trinity architecture. Officially introduced in Q2 2012, it is the direct successor to the Llano A-series of APUs (Accelerated Processing Unit). The processing unit is manufactured in 32nm SOI and integrates a 2.7 GHz CPU (up to 3.2 GHz w/ Turbo Core) with a Radeon HD 7520G GPU alongside a dual-channel memory controller, video de- and encoders and a northbridge.

The CPU cores are based on a reworked Bulldozer architecture, called Piledriver. Although marketed as a dual-core processor, the A6-4400M includes only one module with two integer-cores and one floating-point core. As a result, the CPU is not a true dual-core processor.

When compared to previous Bulldozer cores, AMD has managed to improve upon the IPC (instructions per clock) performance of Trinity cores while allowing for higher clock frequencies. However, when compared to its Llano predecessor, the multithreaded performance of Trinity has only been slightly improved. The enhanced Turbo Core 3.0 feature functions well in speeding up single threaded performance, although it is still not on the same level as Intel’s Turbo Boost equivalent. Regardless, AMD has managed to include other features as well, such as the AVX extension (including FMA) and support for AES encryption.

In terms of raw general performance, the A6-4400M performs similar to the Llano-based A4-3330MX. Single-threaded workloads can especially benefit from the new architecture and the updated Turbo Core functionality. If compared to Intels Pentium-series, the A6-4400M offers less performance in most cases. Nonetheless, CPU performance from the AMD processor should be sufficient for all daily workloads like Office and Internet browsing, but will reach its limits in more demanding applications.

The integrated DirectX 11-compatible Radeon HD 7520G offers only 192 shader cores of the Trinity chip (7660G: 384) and, thanks to Turbo Core, will operate anywhere between 497 to 686 MHz depending on the current application demand. On average, the performance of the HD 7520G GPU should be somewhere between the Llano-based Radeon HD 6620G and the HD Graphics 4000 as found in Intel’s Ivy Bridge.

The power consumption of the A6-4400M APU is rated at 35 Watt TDP and is therefore comparable to dual-core Ivy Bridge processors. Consequently, the A6-4400M is best suited for 14-inch notebooks or larger.

AMD A8-4557MAMD A6-4400M
AMD A-SeriesAMD A-Series
TrinityTrinity
: A-Series Trinity
AMD A10-4600M compare2300 - 3200 MHz4 / 4
AMD A10-4657M compare2300 - 3200 MHz4 / 4
AMD A10-4655M compare2000 - 2800 MHz4 / 4
AMD A8-4500M compare1900 - 2800 MHz4 / 4
» AMD A8-4557M1900 - 2800 MHz4 / 4
AMD A8-4555M compare1600 - 2400 MHz4 / 4
AMD A6-4400M2700 - 3200 MHz2
AMD A4-4300M compare2500 - 3000 MHz2
AMD A6-4455M compare2100 - 2600 MHz2
AMD A4-4355M compare1900 - 2400 MHz2
AMD A10-4600M compare2300 - 3200 MHz4 / 4
AMD A10-4657M compare2300 - 3200 MHz4 / 4
AMD A10-4655M compare2000 - 2800 MHz4 / 4
AMD A8-4500M compare1900 - 2800 MHz4 / 4
AMD A8-4557M1900 - 2800 MHz4 / 4
AMD A8-4555M compare1600 - 2400 MHz4 / 4
» AMD A6-4400M2700 - 3200 MHz2
AMD A4-4300M compare2500 - 3000 MHz2
AMD A6-4455M compare2100 - 2600 MHz2
AMD A4-4355M compare1900 - 2400 MHz2
1900 - 2800 MHz2700 - 3200 MHz
4 MB1 MB
4 / 42
35 35
1303 1303
32 32
246 mm2246 mm2
BGA
SSE (1, 2, 3, 3S, 4.1, 4.2, 4A), x86-64, AES, AVX, FMASSE (1, 2, 3, 3S, 4.1, 4.2, 4A), x86-64, AES, AVX, FMA
iGPUAMD Radeon HD 7640G (497 - 655 MHz)AMD Radeon HD 7520G (496 - 685 MHz)

Cinebench R11.5 - CPU Multi 64Bit
min: 0.98     avg: 1.1     median: 1.1 (3%)     max: 1.14 Points
Cinebench R11.5 - CPU Single 64Bit
0.8 Points (31%)
Cinebench R10 - Rendering Single 32Bit
min: 1829     avg: 2225     median: 2292 (24%)     max: 2384 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 3096     avg: 3344     median: 3407 (6%)     max: 3413 Points
Cinebench R10 - Rendering Multiple CPUs 64Bit
min: 4161     avg: 4482     median: 4589 (5%)     max: 4590 Points
Cinebench R10 - Rendering Single CPUs 64Bit
min: 2948     avg: 3063     median: 3069.5 (29%)     max: 3165 Points
wPrime 2.10 - 1024m *
min: 1399     avg: 1528     median: 1520.5 (18%)     max: 1672.9 seconds
wPrime 2.10 - 32m *
min: 42     avg: 47.1     median: 46.8 (9%)     max: 52.87 seconds
WinRAR - Result
min: 1070     avg: 1353     median: 1353 (14%)     max: 1636 KB/s
X264 HD Benchmark 4.0 - Pass 2
7.6 fps (5%)
X264 HD Benchmark 4.0 - Pass 1
38.8 fps (13%)
TrueCrypt - Serpent Mean 100MB
min: 0.072     avg: 0.1     median: 0.1 (0%)     max: 0.0778 GB/s
TrueCrypt - Twofish Mean 100MB
min: 0.128     avg: 0.1     median: 0.1 (0%)     max: 0.135 GB/s
TrueCrypt - AES Mean 100MB
min: 0.63     avg: 0.7     median: 0.7 (0%)     max: 0.689 GB/s
3DMark 06 - CPU - CPU Score
min: 1781     avg: 1800     median: 1804 (12%)     max: 1811 Points
Super Pi mod 1.5 XS 1M - 1M *
min: 31     avg: 32.7     median: 31.6 (7%)     max: 36.478 Seconds
Super Pi mod 1.5 XS 2M - 2M *
min: 70     avg: 73.3     median: 70.9 (3%)     max: 81.308 Seconds
Super Pi Mod 1.5 XS 32M - 32M *
min: 1798     avg: 1848     median: 1806.9 (8%)     max: 1979.86 Seconds
SiSoft Sandra Dhrystone (MIPS)
18210 MIPS (9%)
SiSoft Sandra Whetstone (MFLOPS)
12380 MFLOPS (9%)
Windows 7 Experience Index - Processor
min: 5.5     avg: 5.6     median: 5.6 (72%)     max: 5.6 points
3DMark Vantage - P CPU no PhysX 1280x1024
min: 3183     avg: 3308     median: 3304 (5%)     max: 3451 Points
3DMark 11 - Performance Physics 1280x720
min: 1193     avg: 1380     median: 1403 (6%)     max: 1512 points
3DMark - Ice Storm Standard Physics 1280x720
13531 Points (9%)
3DMark - Cloud Gate Standard Physics 1280x720
1004 Points (3%)

Average Benchmarks AMD A6-4400M → 100%

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* 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: 2017-09-11)