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AMD A8-4557M vs AMD A8-4555M vs AMD A4-4355M

AMD A8-4557M

► remove from comparison 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 A8-4555M

► remove from comparison AMD A8-4555M

The AMD A8-4555M is a mobile ultra-low-voltage (ULV) quad-core processor based on the Trinity architecture. Officially introduced in Q4 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 1.6 GHz CPU (up to 2.4 GHz w/ Turbo Core) with a relatively fast Radeon HD 7600G 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 quad-core processor, the A8-4555M 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 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 A8-4555M performs somewhere between the ULV Pentium and Core i3 series from Intel. Because of the lower frequency, the A8-4555M is 15 - 20 % slower than the A10-4655M (25 W TDP). Nonetheless, CPU performance of the AMD processor is sufficient for all daily workloads like Office, Internet browsing and even light video editing or gaming.

The APU integrates a DirectX 11-compatible GPU called Radeon HD 7600G.

The power consumption of the A8-4555M APU is rated at 19 Watt TDP and therefore comparable to Intels ULV-processors. Consequently, the A8-4555M is best suited for thin-and-light notebooks.

AMD A4-4355M

► remove from comparison AMD A4-4355M

The AMD A4-4355M is a mobile ultra-low-voltage (ULV) dual-core processor based on the Trinity architecture. Officially introduced in Q4 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 1.9 GHz CPU (up to 2.4 GHz w/ Turbo Core) with a Radeon HD 7400G 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 A4-4355M includes only one module with two integer-cores and a 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 A4-4355M performs significantly faster than the E-Series (e.g. E2-1800) and competes with Intels Celeron and Pentium ULV processors. 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 and multitasking.

The APU integrates a DirectX 11-compatible GPU called Radeon HD 7400G.

The power consumption of the A4-4355M APU is rated at 17 Watt TDP and is therefore comparable to Intels ULV-processors. Consequently, the A4-4355M is best suited for thin-and-light notebooks.

ModelAMD A8-4557MAMD A8-4555MAMD A4-4355M
SeriesAMD A-SeriesAMD A-SeriesAMD A-Series
CodenameTrinityTrinityTrinity
Series: A-Series Trinity
AMD A10-4600M2.3 - 3.2 GHz4 / 4 cores
AMD A10-4657M2.3 - 3.2 GHz4 / 4 cores
AMD A10-4655M2 - 2.8 GHz4 / 4 cores
AMD A8-4500M1.9 - 2.8 GHz4 / 4 cores
AMD A8-4557M « 1.9 - 2.8 GHz4 / 4 cores
AMD A8-4555M1.6 - 2.4 GHz4 / 4 cores
AMD A6-4400M2.7 - 3.2 GHzcores
AMD A4-4300M2.5 - 3 GHzcores
AMD A6-4455M2.1 - 2.6 GHzcores
AMD A4-4355M1.9 - 2.4 GHzcores
AMD A10-4600M2.3 - 3.2 GHz4 / 4 cores
AMD A10-4657M2.3 - 3.2 GHz4 / 4 cores
AMD A10-4655M2 - 2.8 GHz4 / 4 cores
AMD A8-4500M1.9 - 2.8 GHz4 / 4 cores
AMD A8-4557M1.9 - 2.8 GHz4 / 4 cores
AMD A8-4555M « 1.6 - 2.4 GHz4 / 4 cores
AMD A6-4400M2.7 - 3.2 GHzcores
AMD A4-4300M2.5 - 3 GHzcores
AMD A6-4455M2.1 - 2.6 GHzcores
AMD A4-4355M1.9 - 2.4 GHzcores
AMD A10-4600M2.3 - 3.2 GHz4 / 4 cores
AMD A10-4657M2.3 - 3.2 GHz4 / 4 cores
AMD A10-4655M2 - 2.8 GHz4 / 4 cores
AMD A8-4500M1.9 - 2.8 GHz4 / 4 cores
AMD A8-4557M1.9 - 2.8 GHz4 / 4 cores
AMD A8-4555M1.6 - 2.4 GHz4 / 4 cores
AMD A6-4400M2.7 - 3.2 GHzcores
AMD A4-4300M2.5 - 3 GHzcores
AMD A6-4455M2.1 - 2.6 GHzcores
AMD A4-4355M « 1.9 - 2.4 GHzcores
Clock1900 - 2800 MHz1600 - 2400 MHz1900 - 2400 MHz
L2 Cache4 MB4 MB2 MB
Cores / Threads4 / 44 / 42
TDP35 Watt19 Watt17 Watt
Transistors1303 Million1303 Million1303 Million
Technology32 nm32 nm32 nm
Die Size246 mm2246 mm2246 mm2
SocketBGA
FeaturesSSE (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, 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 7600G (320 - 424 MHz)AMD Radeon HD 7400G (327 - 424 MHz)
Architecturex86x86x86
Announced

Benchmarks

Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
min: 0.78     avg: 1.1     median: 1.2 (2%)     max: 1.24 Points
0.7 Points (1%)
Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
min: 0.42     avg: 0.5     median: 0.4 (11%)     max: 0.57 Points
0.5 Points (13%)
Cinebench R10 - Cinebench R10 Rend. Single (32bit)
min: 1382     avg: 1507     median: 1555 (9%)     max: 1583 Points
1690 Points (10%)
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
min: 3681     avg: 3753     median: 3757 (3%)     max: 3821 Points
2318 Points (2%)
Cinebench R10 - Cinebench R10 Rend. Multi (64bit)
min: 3491     avg: 4832     median: 5170.5 (4%)     max: 5494 Points
3120 Points (2%)
Cinebench R10 - Cinebench R10 Rend. Single (64bit)
min: 1593     avg: 1871     median: 1891 (2%)     max: 2109 Points
2108 Points (3%)
wPrime 2.10 - wPrime 2.0 1024m *
min: 1230     avg: 1265     median: 1282 (15%)     max: 1284 s
2128 s (25%)
wPrime 2.10 - wPrime 2.0 32m *
min: 37     avg: 41.6     median: 40.2 (8%)     max: 47.7 s
63.5 s (13%)
WinRAR - WinRAR 4.0
min: 1468     avg: 1937     median: 1936.5 (3%)     max: 2405 Points
884 Points (1%)
X264 HD Benchmark 4.0 - x264 Pass 2
min: 3.06     avg: 4.2     median: 4.2 (1%)     max: 5.35 fps
X264 HD Benchmark 4.0 - x264 Pass 1
min: 13.61     avg: 20.9     median: 20.9 (5%)     max: 28.18 fps
TrueCrypt - TrueCrypt Serpent
min: 0.091     avg: 0.1     median: 0.1 (0%)     max: 0.094 GB/s
0.1 GB/s (0%)
TrueCrypt - TrueCrypt Twofish
min: 0.163     avg: 0.2     median: 0.2 (3%)     max: 0.171 GB/s
0.1 GB/s (2%)
TrueCrypt - TrueCrypt AES
min: 0.81     avg: 0.8     median: 0.8 (2%)     max: 0.822 GB/s
0.5 GB/s (1%)
3DMark 06 - CPU - 3DMark 06 - CPU
min: 1197     avg: 1720     median: 1876.5 (4%)     max: 1928 Points
1239 Points (3%)
Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
41 s (9%)
22 s (5%)
Super Pi mod 1.5 XS 2M - Super Pi mod 1.5 XS 2M *
min: 92     avg: 93.7     median: 94 (4%)     max: 95 s
95 s (4%)
Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
min: 2456     avg: 2523     median: 2491 (11%)     max: 2621 s
2448 s (11%)
SiSoft Sandra Dhrystone (MIPS) - SiSoft Sandra Dhrystone (MIPS)
min: 12110     avg: 20422     median: 24156 (11%)     max: 25000 MIPS
SiSoft Sandra Whetstone (MFLOPS) - SiSoft Sandra Whetstone (MFLOPS)
min: 9000     avg: 13711     median: 15750 (12%)     max: 16384 MFLOPS
3DMark Vantage - 3DM Vant. Perf. CPU no Physx
min: 3310     avg: 3527     median: 3526.5 (3%)     max: 3743 Points
3DMark 11 - 3DM11 Performance Physics
min: 1097     avg: 1531     median: 1654 (4%)     max: 1719 Points
994 Points (3%)
3DMark - 3DMark Ice Storm Physics
9328 Points (8%)
3DMark - 3DMark Cloud Gate Physics
718 Points (2%)
3DMark - 3DMark Fire Strike Standard Physics
922 Points (2%)

Average Benchmarks AMD A8-4555M → 0% n=

Average Benchmarks AMD A4-4355M → 0% n=

- 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

v1.26
log 28. 13:57:46

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#4 did not recreate cache, as it is less than 5 days old! Created at Thu, 28 Mar 2024 05:35:32 +0100 +0.001s ... 0.001s

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#10 got single benchmarks 3518 +0.017s ... 0.059s

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#12 got single benchmarks 3517 +0.009s ... 0.071s

#13 got avg benchmarks for devices +0s ... 0.071s

#14 min, max, avg, median took s +0.138s ... 0.208s

#15 return log +0s ... 0.208s

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