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.
Series AMD A-Series Codename Trinity Series: A-Series Trinity Clock Rate 2100 - 2600 MHz Level 2 Cache 2 MB Number of Cores / Threads 2 Power Consumption (TDP = Thermal Design Power) 17 Watt Transistor Count 1303 Million Manufacturing Technology 32 nm Die Size 246 mm2 Features SSE (1, 2, 3, 3S, 4.1, 4.2, 4A), x86-64, AES, AVX, FMA GPU AMD Radeon HD 7500G (327 - 424 MHz)64 Bit 64 Bit support Architecture x86 Announcement Date 05/15/2012
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
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Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
min: 0.53 avg: 0.6 median: 0.6 (15%) max: 0.63 Points
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Cinebench R10 - Cinebench R10 Rend. Single (32bit)
min: 1594 avg: 1742 median: 1689 (10%) max: 1943 points
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Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
min: 2578 avg: 2594 median: 2601 (2%) max: 2602 points
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Intel Core 2 Duo T5450
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Cinebench R10 - Cinebench R10 Rend. Multi (64bit)
min: 3578 avg: 3596 median: 3593.5 (2%) max: 3620 Points
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Cinebench R10 - Cinebench R10 Rend. Single (64bit)
min: 2172 avg: 2459 median: 2602 (3%) max: 2603 Points
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wPrime 2.10 - wPrime 2.0 1024m *
min: 1950 avg: 2010 median: 1975 (23%) max: 2104 s
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VIA C3-M C3-M-1200
wPrime 2.10 - wPrime 2.0 32m *
min: 58.9 avg: 62 median: 61.8 (12%) max: 65.2 s
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Intel Core 2 Duo T5250
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865 points (1%)
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X264 HD Benchmark 4.0 - x264 Pass 2
5.7 fps (2%)
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X264 HD Benchmark 4.0 - x264 Pass 1
30.7 fps (7%)
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TrueCrypt - TrueCrypt Serpent
0.1 GB/s (0%)
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TrueCrypt - TrueCrypt Twofish
0.1 GB/s (2%)
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TrueCrypt - TrueCrypt AES
0.5 GB/s (1%)
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3DMark 06 - CPU - 3DMark 06 - CPU
min: 1348 avg: 1359 median: 1358.5 (3%) max: 1372 Points
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Intel Pentium Dual Core T2330
Intel Core 2 Duo T5250
AMD Athlon 64 X2 TK-55
Intel Core 2 Duo T5470
Intel Core Duo T2300
Intel Core 2 Duo T5450
Intel Core Duo T2250
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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
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Intel Pentium Dual Core T2080
Intel Celeron M 520
Intel Core Duo L2300
Intel Core Solo T1200
Intel Pentium Dual Core T2330
Intel Pentium M 765
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VIA C3-M C3-M-1200
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
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Intel Core Duo T2300
Intel Core Duo T2250
Intel Core 2 Duo L7100
Intel Pentium M 770
Intel Pentium M 780
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Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
min: 2194 avg: 2349 median: 2196 (10%) max: 2658 s
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AMD Mobile Sempron 3800+
Intel Pentium M 760
AMD Mobile Sempron 3600+
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VIA C3-M C3-M-1200
SiSoft Sandra Dhrystone (MIPS) - SiSoft Sandra Dhrystone (MIPS)
min: 15.46 avg: 9615 median: 13880 (7%) max: 14950 MIPS
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AMD Turion 64 ML-34
Intel Pentium M 760
AMD Turion 64 ML-44
Intel Core 2 Duo L7100
Intel Pentium Dual Core T2060
Intel Core Duo T2050
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SiSoft Sandra Whetstone (MFLOPS) - SiSoft Sandra Whetstone (MFLOPS)
min: 9.24 avg: 6386 median: 9400 (7%) max: 9748 MFLOPS
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Intel Core Duo U2500
Intel Celeron M 550
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Windows 7 Experience Index - Win7 CPU
min: 4.7 avg: 4.8 median: 4.8 (61%) max: 4.8 Points
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3DMark Vantage - 3DM Vant. Perf. CPU no Physx
min: 2596 avg: 2683 median: 2690.5 (2%) max: 2756 Points
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3DMark 11 - 3DM11 Performance Physics
min: 1127 avg: 1184 median: 1212 (3%) max: 1214 Points
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3DMark - 3DMark Ice Storm Physics
9415 Points (8%)
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3DMark - 3DMark Cloud Gate Physics
738 Points (2%)
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3DMark - 3DMark Fire Strike Standard Physics
957 Points (2%)
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Geekbench 2 - 32 Bit - Geekbench Stream
3442 Points (28%)
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Geekbench 2 - 32 Bit - Geekbench Memory
2618 Points (24%)
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Geekbench 2 - 32 Bit - Geekbench Floating Point
3030 Points (6%)
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Geekbench 2 - 32 Bit - Geekbench Integer
2374 Points (5%)
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Geekbench 2 - 32 Bit - Geekbench Total Score
min: 2697 avg: 2728 median: 2728 (7%) max: 2759 Points
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- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance
v1.26
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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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Klaus Hinum (Update: 2017-09- 5)