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AMD A6-4455M

AMD A6-4455M

The AMD A6-4455M is a mobile ultra-low-voltage (ULV) 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 2.1 GHz CPU (up to 2.6 GHz w/ Turbo Core) with a Radeon HD 7500G 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 A6-4455M includes only one module with two integer-cores and and 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 A6-4455M performs significantly faster than the E-Series (e.g. E2-1800), but cannot compete with Intels ULV processors. 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 and multitasking.

The integrated DirectX 11-compatible Radeon HD 7500G offers only 256 shader cores of the Trinity chip (7660G: 384) and, thanks to Turbo Core, will operate anywhere between 360 to 497 MHz depending on the current application demand. On average, the performance of the HD 7500G 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 A6-4455M APU is rated at 17 Watt TDP and is therefore comparable to Intels ULV-processors. Consequently, the A6-4455M is best suited for thin-and-light notebooks.

SeriesAMD A-Series
CodenameTrinity

Series: A-Series Trinity

AMD A10-4600M compare2.3 - 3.2 GHz4 / 4 cores
AMD A10-4657M compare2.3 - 3.2 GHz4 / 4 cores
AMD A10-4655M compare2 - 2.8 GHz4 / 4 cores
AMD A8-4500M compare1.9 - 2.8 GHz4 / 4 cores
AMD A8-4557M compare1.9 - 2.8 GHz4 / 4 cores
AMD A8-4555M compare1.6 - 2.4 GHz4 / 4 cores
AMD A6-4400M compare2.7 - 3.2 GHzcores
AMD A4-4300M compare2.5 - 3 GHzcores
AMD A6-4455M « 2.1 - 2.6 GHzcores
AMD A4-4355M compare1.9 - 2.4 GHzcores
Clock Rate2100 - 2600 MHz
Level 2 Cache2 MB
Number of Cores / Threads2
Power Consumption (TDP = Thermal Design Power)17 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 7500G (327 - 424 MHz)
64 Bit64 Bit support
Architecturex86
Announcement Date05/15/2012

Benchmarks

Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
min: 0.85     avg: 0.9     median: 0.9 (1%)     max: 0.87 Points
Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
min: 0.53     avg: 0.6     median: 0.6 (15%)     max: 0.63 Points
Cinebench R10 - Cinebench R10 Rend. Multi (64bit)
min: 3578     avg: 3596     median: 3593.5 (2%)     max: 3620 Points
wPrime 2.10 - wPrime 2.0 1024m *
min: 1950     avg: 2010     median: 1975 (23%)     max: 2104 s
TrueCrypt - TrueCrypt AES
0.5 GB/s (1%)
3DMark 06 - CPU - 3DMark 06 - CPU
min: 1348     avg: 1359     median: 1358.5 (3%)     max: 1372 Points
Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
min: 37.11     avg: 39.8     median: 37.3 (8%)     max: 45 s
Super Pi mod 1.5 XS 2M - Super Pi mod 1.5 XS 2M *
min: 84.5     avg: 90.7     median: 85.7 (4%)     max: 102 s
Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
min: 2194     avg: 2349     median: 2196 (10%)     max: 2658 s
SiSoft Sandra Dhrystone (MIPS) - SiSoft Sandra Dhrystone (MIPS)
min: 15.46     avg: 9615     median: 13880 (7%)     max: 14950 MIPS
SiSoft Sandra Whetstone (MFLOPS) - SiSoft Sandra Whetstone (MFLOPS)
min: 9.24     avg: 6386     median: 9400 (7%)     max: 9748 MFLOPS
3DMark Vantage - 3DM Vant. Perf. CPU no Physx
min: 2596     avg: 2683     median: 2690.5 (2%)     max: 2756 Points
3DMark 11 - 3DM11 Performance Physics
min: 1127     avg: 1184     median: 1212 (3%)     max: 1214 Points
Geekbench 2 - 32 Bit - Geekbench Total Score
min: 2697     avg: 2728     median: 2728 (7%)     max: 2759 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 A6-4455M processor

 

Review Acer Aspire V5-551-64454G50Makk Notebook

Too noisy, too slow. Acer's 15.6-inch Aspire V5-551-64454G50Makk is a slim and light notebook selling for less than 400 Euro (~$520). The power-efficient AMD A6...
AMD A6-4455M | AMD Radeon HD 7500G | 15.60" | 2.3 kg
 

Review Samsung Series 5 535U3C Notebook

Affordably good. Samsung's Series 5 13-inch laptops do not only feature frequently used Intel components, but also alternative equipment from AMD. Despite the l...
AMD A6-4455M | AMD Radeon HD 7500G | 13.30" | 1.5 kg
 

Review Samsung Series 5 535U4C Notebook

Off the beaten path. Samsung expands its Series 5 family of compact notebooks with a fairly inexpensive 14-inch model. This time, the Korean manufacturer ventur...
AMD A6-4455M | AMD Radeon HD 7550M | 14.00" | 1.8 kg

Lenovo IdeaPad S405-59361281: AMD Radeon HD 7500G, 14.00", 1.6 kg
  External Review » Lenovo IdeaPad S405-59361281

Acer Aspire V5-551-6445G50: AMD Radeon HD 7500G, 15.60", 2.1 kg
  External Review » Acer Aspire V5-551-6445G50

Samsung 535U3C-A02UK: AMD Radeon HD 7500G, 13.30", 1.5 kg
  External Review » Samsung 535U3C-A02UK

HP Envy Sleekbook 6-1126sa: AMD Radeon HD 7500G, 15.60", 2.2 kg
  External Review » HP Envy Sleekbook 6-1126sa

Acer Aspire V5-551-64454G50MASS: AMD Radeon HD 7500G, 15.60", 2.1 kg
  External Review » Acer Aspire V5-551-64454G50MASS

Toshiba Satellite L955D-108: AMD Radeon HD 7500G, 15.60", 2.2 kg
  External Review » Toshiba Satellite L955D-108

HP Envy 6-1010eo: AMD Radeon HD 7500G, 15.60", 2.2 kg
  External Review » HP Envy 6-1010eo

HP Envy 6-1006ea: AMD Radeon HD 7500G, 15.60", 2 kg
  External Review » HP Envy 6-1006ea

Samsung 535U3C-A01UK: AMD Radeon HD 7500G, 13.30", 1.5 kg
  External Review » Samsung 535U3C-A01UK

Samsung 535U3C-A01US: AMD Radeon HD 7500G, 13.30", 1.5 kg
  External Review » Samsung 535U3C-A01US

Samsung 535U4C: AMD Radeon HD 7550M, 14.00", 1.8 kg
  External Review » Samsung 535U4C

Samsung 535U3C: AMD Radeon HD 7500G, 13.30", 1.5 kg
  External Review » Samsung 535U3C

HP Envy 6z-1000: AMD Radeon HD 7500G, 15.60", 2.1 kg
  External Review » HP Envy 6z-1000

HP Envy SleekBook 6-1010us: AMD Radeon HD 7500G, 15.60", 2.1 kg
  External Review » HP Envy SleekBook 6-1010us

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Other CPUs of the series A-Series

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» AMD A10-4655M
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» 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

+ AMD Athlon X2 QL-62
   2x 2 GHz
+ AMD Turion 64 X2 TL-60
   2x 2 GHz
+ AMD Athlon X2 QL-60
   2x 1.9 GHz
+ Intel Core 2 Duo T5500
   2x 1.66 GHz
+ Intel Core i5-430UM
   2x 1.2 GHz - 1.73 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
- Intel Celeron N2830
   2x 2.16 GHz - 2.41 GHz
- Intel Celeron N2820
   2x 2.17 GHz - 2.39 GHz
- Intel Celeron N3050
   2x 1.6 GHz - 2.16 GHz
> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > Benchmarks / Tech > Notebook Processors > AMD A-Series A6-4455M Notebook Processor
Klaus Hinum (Update: 2017-09- 5)