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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 (compare)2300 - 3200 MHz4 / 4
AMD A10-4657M (compare)2300 - 3200 MHz4 / 4
AMD A10-4655M (compare)2000 - 2800 MHz4 / 4
AMD A8-4500M (compare)1900 - 2800 MHz4 / 4
AMD A8-4557M (compare)1900 - 2800 MHz4 / 4
» AMD A8-4555M1600 - 2400 MHz4 / 4
AMD A6-4400M (compare)2700 - 3200 MHz2
AMD A4-4300M (compare)2500 - 3000 MHz2
AMD A6-4455M (compare)2100 - 2600 MHz2
AMD A4-4355M (compare)1900 - 2400 MHz2
Clock Rate1600 - 2400 MHz
Level 2 Cache4 MB
Number of Cores / Threads4 / 4
Max. 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 - CPU Multi 64Bit
min: 0.78     avg: 1.1     median: 1.2 (5%)     max: 1.24 Points
Cinebench R11.5 - CPU Single 64Bit
min: 0.42     avg: 0.5     median: 0.4 (19%)     max: 0.57 Points
Cinebench R10 - Rendering Single 32Bit
min: 1382     avg: 1506.7     median: 1555 (19%)     max: 1583 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 3681     avg: 3753     median: 3757 (8%)     max: 3821 Points
Cinebench R10 - Rendering Multiple CPUs 64Bit
min: 3491     avg: 4831.5     median: 5170.5 (7%)     max: 5494 Points
Cinebench R10 - Rendering Single CPUs 64Bit
min: 1593     avg: 1871     median: 1891 (21%)     max: 2109 Points
wPrime 2.0x - 1024m *
min: 1230     avg: 1265.3     median: 1282 (15%)     max: 1284 seconds
wPrime 2.0x - 32m *
min: 37     avg: 41.6     median: 40.2 (8%)     max: 47.7 seconds
WinRAR - Result
min: 1468     avg: 1936.5     median: 1936.5 (23%)     max: 2405 KB/s
X264 HD Benchmark 4.0 - Pass 2
min: 3.06     avg: 4.2     median: 4.2 (3%)     max: 5.35 fps
X264 HD Benchmark 4.0 - Pass 1
min: 13.615     avg: 20.9     median: 20.9 (9%)     max: 28.18 fps
TrueCrypt - Serpent Mean 100MB
min: 0.091     avg: 0.1     median: 0.1 (0%)     max: 0.094 GB/s
TrueCrypt - Twofish Mean 100MB
min: 0.163     avg: 0.2     median: 0.2 (0%)     max: 0.171 GB/s
TrueCrypt - AES Mean 100MB
min: 0.81     avg: 0.8     median: 0.8 (4%)     max: 0.822 GB/s
3DMark 06 - CPU
min: 1197     avg: 1719.5     median: 1876.5 (15%)     max: 1928 Points
Super Pi mod 1.5 XS 1M *
41 Seconds (9%)
Super Pi mod 1.5 XS 2M *
min: 92     avg: 93.7     median: 94 (4%)     max: 95 Seconds
Super Pi Mod 1.5 XS 32M *
min: 2456     avg: 2522.7     median: 2491 (11%)     max: 2621 Seconds
SiSoft Sandra Dhrystone (MIPS)
min: 12110     avg: 20422     median: 24156 (11%)     max: 25000 MIPS
SiSoft Sandra Whetstone (MFLOPS)
min: 9000     avg: 13711.3     median: 15750 (12%)     max: 16384 MFLOPS
3DMark Vantage - P CPU no PhysX 1280x1024
min: 3310     avg: 3526.5     median: 3526.5 (6%)     max: 3743 Points
3DMark 11 - Performance Physics 1280x720
min: 1097     avg: 1531     median: 1654 (9%)     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 AMD A-Series

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

Surrounding CPUs

- Intel Core 2 Duo T6600
   2.2 GHz / 2 MB
- AMD Turion II P560
   2.5 GHz / 2 MB
- AMD Turion II N530
   2.5 GHz / 2 MB
- Intel Core 2 Duo T8100
   2.1 GHz / 3 MB
- AMD Phenom II X3 P820
   1.8 GHz / 1.5 MB
» AMD A-Series A8-4555M
   1.6 GHz / 4 MB
+ Intel Core 2 Duo T5900
   2.2 GHz / 2048 KB
+ AMD Turion II Ultra M620
   2.5 GHz / 2048 KB
+ Intel Core 2 Duo P7370
   2 GHz / 3072 KB
+ Intel Core Duo T2700
   2.33 GHz / 2048 KB
+ Intel Pentium Dual Core T4400
   2.2 GHz / 1024 KB
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Klaus Hinum (Update: 2017-09- 5)