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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 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 A8-4555M compare1600 - 2400 MHz4 / 4
AMD A6-4400M compare2700 - 3200 MHz2
AMD A4-4300M compare2500 - 3000 MHz2
» AMD A6-4455M2100 - 2600 MHz2
AMD A4-4355M compare1900 - 2400 MHz2
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
Announcement Date05/15/2012

Benchmarks

Cinebench R11.5 - CPU Multi 64Bit
min: 0.85     avg: 0.9     median: 0.9 (2%)     max: 0.87 Points
Cinebench R11.5 - CPU Single 64Bit
min: 0.53     avg: 0.6     median: 0.6 (24%)     max: 0.63 Points
Cinebench R10 - Rendering Single 32Bit
min: 1594     avg: 1742     median: 1689 (17%)     max: 1943 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 2578     avg: 2594     median: 2601 (4%)     max: 2602 Points
Cinebench R10 - Rendering Multiple CPUs 64Bit
min: 3578     avg: 3596     median: 3593.5 (4%)     max: 3620 Points
Cinebench R10 - Rendering Single CPUs 64Bit
min: 2172     avg: 2459     median: 2602 (24%)     max: 2603 Points
wPrime 2.10 - 1024m *
min: 1950     avg: 2009     median: 1974.7 (23%)     max: 2103.55 seconds
wPrime 2.10 - 32m *
min: 58.9     avg: 62     median: 61.8 (12%)     max: 65.179 seconds
X264 HD Benchmark 4.0 - Pass 2
5.7 fps (3%)
3DMark 06 - CPU - CPU Score
min: 1348     avg: 1359     median: 1358.5 (9%)     max: 1372 Points
Super Pi mod 1.5 XS 1M - 1M *
min: 37.113     avg: 39.8     median: 37.3 (8%)     max: 45 Seconds
Super Pi mod 1.5 XS 2M - 2M *
min: 84.537     avg: 90.7     median: 85.7 (4%)     max: 102 Seconds
Super Pi Mod 1.5 XS 32M - 32M *
min: 2194.03     avg: 2349     median: 2196.1 (10%)     max: 2658 Seconds
SiSoft Sandra Dhrystone (MIPS)
min: 15.46     avg: 9615     median: 13880 (7%)     max: 14950 MIPS
SiSoft Sandra Whetstone (MFLOPS)
min: 9.24     avg: 6386     median: 9400 (7%)     max: 9748 MFLOPS
Windows 7 Experience Index - Processor
min: 4.7     avg: 4.8     median: 4.8 (61%)     max: 4.8 points
3DMark Vantage - P CPU no PhysX 1280x1024
min: 2596     avg: 2683     median: 2690.5 (4%)     max: 2756 Points
3DMark 11 - Performance Physics 1280x720
min: 1127     avg: 1184     median: 1212 (5%)     max: 1214 points
Geekbench 2 - 32 Bit - 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 A-Series A6-4455M processor

Acer Aspire V5-551-64454G50Makk (AMD Radeon HD 7500G, 15.6")
» Review Acer Aspire V5-551-64454G50Makk Notebook - Review

Acer Aspire V5-551-64454G50MASS (AMD Radeon HD 7500G, 15.6")
» Acer Aspire V5-551-64454G50MASS - External Review

Acer Aspire V5-551-6445G50 (AMD Radeon HD 7500G, 15.6")
» Acer Aspire V5-551-6445G50 - External Review

HP Envy 6-1006ea (AMD Radeon HD 7500G, 15.6")
» HP Envy 6-1006ea - External Review

HP Envy 6-1010eo (AMD Radeon HD 7500G, 15.6")
» HP Envy 6-1010eo - External Review

HP Envy 6z-1000 (AMD Radeon HD 7500G, 15.6")
» HP Envy 6z-1000 - External Review

HP Envy SleekBook 6-1010us (AMD Radeon HD 7500G, 15.6")
» HP Envy SleekBook 6-1010us - External Review

HP Envy Sleekbook 6-1126sa (AMD Radeon HD 7500G, 15.6")
» HP Envy Sleekbook 6-1126sa - External Review

Lenovo IdeaPad S405-59361281 (AMD Radeon HD 7500G, 14")
» Lenovo IdeaPad S405-59361281 - External Review

Samsung 535U3C (AMD Radeon HD 7500G, 13.3")
» Review Samsung Series 5 535U3C Notebook - Review
» Samsung 535U3C - External Review

Samsung 535U3C-A01UK (AMD Radeon HD 7500G, 13.3")
» Samsung 535U3C-A01UK - External Review

Samsung 535U3C-A01US (AMD Radeon HD 7500G, 13.3")
» Samsung 535U3C-A01US - External Review

Samsung 535U3C-A02UK (AMD Radeon HD 7500G, 13.3")
» Samsung 535U3C-A02UK - External Review

Samsung 535U4C (AMD Radeon HD 7550M, 14")
» Review Samsung Series 5 535U4C Notebook - Review
» Samsung 535U4C - External Review

Toshiba Satellite L955D-108 (AMD Radeon HD 7500G, 15.6")
» Toshiba Satellite L955D-108 - External 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 L2
» AMD A-Series A10-5757M
   2.5 GHz / 4 MB L2
» AMD A-Series A10-4600M
   2.3 GHz / 4 MB L2
» AMD A-Series A10-4657M
   2.3 GHz / 4 MB L2
» AMD A-Series A10-5745M
   2.1 GHz / 4 MB L2
» AMD A-Series A8-5550M
   2.1 GHz / 4 MB L2
» AMD A-Series A8-5557M
   2.1 GHz / 4 MB L2
» AMD A-Series A8-7410
   2.2 GHz / 2 MB L2
» AMD A-Series A8-3550MX
   2 GHz / 4 MB L2
» AMD A-Series A8-6410
   2 GHz / 2 MB L2
» AMD A-Series A6-7310
   2 GHz / 2 MB L2
» AMD A-Series A6-6310
   1.8 GHz / 2 MB L2
» AMD A-Series A8-3530MX
   1.9 GHz / 4 MB L2
» AMD A-Series A8-3510MX
   1.8 GHz / 4 MB L2
» AMD A-Series A4-7210
   1.8 GHz / 2 MB L2
» AMD A-Series A6-3430MX
   1.7 GHz / 4 MB L2
» AMD A-Series A8-3520M
   1.6 GHz / 4 MB L2
» AMD A-Series A10-4655M
   2 GHz / 4 MB L2
» AMD A-Series A8-4500M
   1.9 GHz / 4 MB L2
» AMD A-Series A8-4557M
   1.9 GHz / 4 MB L2
» AMD A-Series A6-3410MX
   1.6 GHz / 4 MB L2
» AMD A-Series A8-3500M
   1.5 GHz / 4 MB L2
» AMD A-Series A6-3420M
   1.5 GHz / 4 MB L2
» AMD A-Series A8-5545M
   1.7 GHz / 4 MB L2
» AMD A-Series A6-3400M
   1.4 GHz / 4 MB L2
» AMD A-Series A8-4555M
   1.6 GHz / 4 MB L2
» AMD A-Series A6-5350M
   2.9 GHz / 1 MB L2
» AMD A-Series A6-5357M
   2.9 GHz / 1 MB L2
» AMD A-Series A6-5200
   2 GHz / 2 MB L2
» AMD A-Series A4-3330MX
   2.2 GHz / 2 MB L2
» AMD A-Series A4-5150M
   2.7 GHz / 1 MB L2
» AMD A-Series A6-4400M
   2.7 GHz / 1 MB L2
» AMD A-Series A4-4300M
   2.5 GHz / 1 MB L2
» AMD A-Series A4-6210
   1.8 GHz / 2 MB L2
» AMD A-Series A4-5100
   1.55 GHz / 2 MB L2
» AMD A-Series A4-5050
   1.55 GHz / 2 MB L2
» AMD A-Series A4-5000
   1.5 GHz / 2 MB L2
» AMD A-Series A10 Micro-6700T
   1.2 GHz / 2 MB L2
» AMD A-Series A4-3310MX
   2.1 GHz / 2 MB L2
» AMD A-Series A4-3320M
   2 GHz / 2 MB L2
» AMD A-Series E2-3800
   1.3 GHz / 2 MB L2
» AMD A-Series A4-3300M
   1.9 GHz / 2 MB L2
» AMD A-Series A4-3305M
   1.9 GHz / 1 MB L2
» AMD A-Series A6-5345M
   2.2 GHz / 1 MB L2
» AMD A-Series A6-1450
   1 GHz / 2 MB L2
» AMD A-Series A4 Micro-6400T
   1 GHz / 2 MB L2
» AMD A-Series A6-4455M
   2.1 GHz / 2 MB L2
» AMD A-Series A4-5145M
   2 GHz / 1 MB L2
» AMD A-Series A4-4355M
   1.9 GHz / 2 MB L2
» AMD A-Series A4-1350
   1 GHz / 2 MB L2
» AMD A-Series A4-1250
   1 GHz / 1 MB L2
» AMD A-Series A4-1200
   1 GHz / 1 MB L2

Surrounding CPUs

- Intel Core 2 Duo T5500
   1.66 GHz / 2 MB
- Intel Core i5 430UM
   1.2 GHz / 0.5 MB + 3 MB
- Qualcomm Snapdragon 626
   2.2 GHz
- Qualcomm Snapdragon 801 MSM8974AC
   2.45 GHz / 2 MB
» AMD A-Series A6-4455M
   2.1 GHz / 2 MB L2
+ AMD A-Series A4-5145M
   2 GHz / 1024 KB
+ AMD A-Series A4-4355M
   1.9 GHz / 2048 KB
+ Samsung Exynos 5430 Octa
   1.8 GHz / 512 + 2048 KB
+ SC9863A
   1.6 GHz / KB
+ Mediatek Helio P23 MT6763T
   2.3 GHz / KB
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Klaus Hinum (Update: 2017-09- 5)