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AMD A8-4555M

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.

SeriesAMD A-Series
CodenameTrinity
Series: 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 A8-4557M compare1900 - 2800 MHz4 / 4
» AMD A8-4555M1600 - 2400 MHz4 / 4
AMD A6-4400M compare2700 - 3200 MHz2
AMD A4-4300M compare2500 - 3000 MHz2
AMD A6-4455M compare2100 - 2600 MHz2
AMD A4-4355M compare1900 - 2400 MHz2
Clock Rate1600 - 2400 MHz
Level 2 Cache4 MB
Number of Cores / Threads4 / 4
Power Consumption (TDP = Thermal Design Power)19 Watt
Transistor Count1303 Million
Manufacturing Technology32 nm
Die Size246 mm2
FeaturesSSE (1, 2, 3, 3S, 4.1, 4.2, 4A), x86-64, AES, AVX, FMA
GPUAMD Radeon HD 7600G (320 - 424 MHz)
64 Bit64 Bit support
Announcement Date10/01/2012

Benchmarks

Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
min: 0.78     avg: 1.1     median: 1.2 (3%)     max: 1.24 Points
Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
min: 0.42     avg: 0.5     median: 0.4 (17%)     max: 0.57 Points
Cinebench R10 - Cinebench R10 Rend. Single (32bit)
min: 1382     avg: 1507     median: 1555 (16%)     max: 1583 points
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
min: 3681     avg: 3753     median: 3757 (6%)     max: 3821 points
Cinebench R10 - Cinebench R10 Rend. Multi (64bit)
min: 3491     avg: 4832     median: 5170.5 (6%)     max: 5494 Points
Cinebench R10 - Cinebench R10 Rend. Single (64bit)
min: 1593     avg: 1871     median: 1891 (17%)     max: 2109 Points
wPrime 2.10 - wPrime 2.0 1024m *
min: 1230     avg: 1265     median: 1282 (15%)     max: 1284 s
wPrime 2.10 - wPrime 2.0 32m *
min: 37     avg: 41.6     median: 40.2 (8%)     max: 47.7 s
WinRAR - WinRAR 4.0
min: 1468     avg: 1937     median: 1936.5 (20%)     max: 2405 points
X264 HD Benchmark 4.0 - x264 Pass 2
min: 3.06     avg: 4.2     median: 4.2 (3%)     max: 5.35 fps
X264 HD Benchmark 4.0 - x264 Pass 1
min: 13.615     avg: 20.9     median: 20.9 (7%)     max: 28.18 fps
TrueCrypt - TrueCrypt Serpent
min: 0.091     avg: 0.1     median: 0.1 (0%)     max: 0.094 GB/s
TrueCrypt - TrueCrypt Twofish
min: 0.163     avg: 0.2     median: 0.2 (0%)     max: 0.171 GB/s
TrueCrypt - TrueCrypt AES
min: 0.81     avg: 0.8     median: 0.8 (0%)     max: 0.822 GB/s
3DMark 06 - CPU - 3DMark 06 - CPU
min: 1197     avg: 1720     median: 1876.5 (13%)     max: 1928 Points
Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
41 s (9%)
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
Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
min: 2456     avg: 2523     median: 2491 (11%)     max: 2621 s
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 11 - 3DM11 Performance Physics
min: 1097     avg: 1531     median: 1654 (7%)     max: 1719 Points
- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance

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Reviews for the AMD A-Series A8-4555M processor

Acer Aspire V5-551 (AMD Radeon HD 7600G, 15.6")
» Acer Aspire V5-551 - External Review

Asus VivoBook U38DT-R3001H (AMD Radeon HD 8550M, 13.3")
» Review Asus VivoBook U38DT Subnotebook - Review
» Asus VivoBook U38DT-R3001H - External Review

Asus VivoBook U38N-C4010H (AMD Radeon HD 7600G, 13.3")
» Asus VivoBook U38N-C4010H - External Review

HP Pavilion Sleekbook 15z-b000 (AMD Radeon HD 7600G, 15.6")
» Review HP Pavilion Sleekbook 15z-b000 Notebook - Review
» HP Pavilion Sleekbook 15z-b000 - External Review

HP Pavilion TouchSmart 15-b168ca (AMD Radeon HD 7600G, 11.6")
» HP Pavilion TouchSmart 15-b168ca - External Review

Lenovo IdeaPad S405 (AMD Radeon HD 7600G, 14")
» Review Lenovo IdeaPad S405 Notebook - Review
» Lenovo IdeaPad S405 - External Review

Toshiba Satellite L955D-S5140NR (AMD Radeon HD 7600G, 15.6")
» Toshiba Satellite L955D-S5140NR - External Review

Toshiba Satellite S955D-S5150 (AMD Radeon HD 7600G, 15.6")
» Review Toshiba Satellite S955D-S5150 Notebook - Review

» Mobile CPU Comparison
Comparison of all mobile CPU series

» Mobile Processors - Benchmarklist
Benchmarklist of all known CPUs that are used in laptops (desktop and laptop CPUs)

Other CPUs of the series A-Series

» AMD A10-5750M
   4x 2.5 GHz - 3.5 GHz
» AMD A10-5757M
   4x 2.5 GHz - 3.5 GHz
» AMD A10-4600M
   4x 2.3 GHz - 3.2 GHz
» AMD A10-4657M
   4x 2.3 GHz - 3.2 GHz
» AMD A10-5745M
   4x 2.1 GHz - 2.9 GHz
» AMD A8-5550M
   4x 2.1 GHz - 3.1 GHz
» AMD A8-5557M
   4x 2.1 GHz - 3.1 GHz
» AMD A8-7410
   4x 2.2 GHz - 2.5 GHz
» AMD A8-3550MX
   4x 2 GHz - 2.7 GHz
» AMD A8-6410
   4x 2 GHz - 2.4 GHz
» AMD A6-7310
   4x 2 GHz - 2.4 GHz
» AMD A6-6310
   4x 1.8 GHz - 2.4 GHz
» AMD A8-3530MX
   4x 1.9 GHz - 2.6 GHz
» AMD A8-3510MX
   4x 1.8 GHz - 2.5 GHz
» AMD A4-7210
   4x 1.8 GHz - 2.2 GHz
» AMD A6-3430MX
   4x 1.7 GHz - 2.4 GHz
» AMD A8-3520M
   4x 1.6 GHz - 2.5 GHz
» AMD A10-4655M
   4x 2 GHz - 2.8 GHz
» AMD A8-4500M
   4x 1.9 GHz - 2.8 GHz
» AMD A8-4557M
   4x 1.9 GHz - 2.8 GHz
» AMD A6-3410MX
   4x 1.6 GHz - 2.3 GHz
» AMD A8-3500M
   4x 1.5 GHz - 2.4 GHz
» AMD A6-3420M
   4x 1.5 GHz - 2.4 GHz
» AMD A8-5545M
   4x 1.7 GHz - 2.7 GHz
» AMD A6-3400M
   4x 1.4 GHz - 2.3 GHz
» AMD A8-4555M
   4x 1.6 GHz - 2.4 GHz
» AMD A6-5350M
   2x 2.9 GHz - 3.5 GHz
» AMD A6-5357M
   2x 2.9 GHz - 3.5 GHz
» AMD A6-5200
   4x 2 GHz
» AMD A4-3330MX
   2x 2.2 GHz - 2.6 GHz
» AMD A4-5150M
   2x 2.7 GHz - 3.3 GHz
» AMD A6-4400M
   2x 2.7 GHz - 3.2 GHz
» AMD A4-4300M
   2x 2.5 GHz - 3 GHz
» AMD A4-6210
   4x 1.8 GHz
» AMD A4-5100
   4x 1.55 GHz
» AMD A4-5050
   4x 1.55 GHz
» AMD A4-5000
   4x 1.5 GHz
» AMD A10 Micro-6700T
   4x 1.2 GHz - 2.2 GHz
» AMD A4-3310MX
   2x 2.1 GHz - 2.5 GHz
» AMD A4-3320M
   2x 2 GHz - 2.6 GHz
» AMD E2-3800
   4x 1.3 GHz
» AMD A4-3300M
   2x 1.9 GHz - 2.5 GHz
» AMD A4-3305M
   2x 1.9 GHz - 2.5 GHz
» AMD A6-5345M
   2x 2.2 GHz - 2.8 GHz
» AMD A6-1450
   4x 1 GHz - 1.4 GHz
» AMD A4 Micro-6400T
   4x 1 GHz - 1.6 GHz
» AMD A6-4455M
   2x 2.1 GHz - 2.6 GHz
» AMD A4-5145M
   2x 2 GHz - 2.6 GHz
» AMD A4-4355M
   2x 1.9 GHz - 2.4 GHz
» AMD A4-1350
   4x 1 GHz
» AMD A4-1250
   2x 1 GHz
» AMD A4-1200
   2x 1 GHz

Surrounding CPUs

+ Intel Core 2 Duo T6600
   2x 2.2 GHz
+ AMD Turion II P560
   2x 2.5 GHz
+ AMD Turion II N530
   2x 2.5 GHz
+ Intel Core 2 Duo T8100
   2x 2.1 GHz
+ AMD Phenom II X3 P820
   3x 1.8 GHz
» AMD A8-4555M
   4x 1.6 GHz - 2.4 GHz
- Intel Core 2 Duo T5900
   2x 2.2 GHz
- AMD Turion II Ultra M620
   2x 2.5 GHz
- Intel Core 2 Duo P7370
   2x 2 GHz
- Intel Core Duo T2700
   2x 2.33 GHz
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> Notebook / Laptop Reviews and News > Benchmarks / Tech > Notebook Processors > AMD A-Series A8-4555M Notebook Processor
Klaus Hinum (Update: 2017-09- 5)