AMD A4-4355M

AMD A4-4355M

The AMD A4-4355M is a mobile ultra-low-voltage (ULV) dual-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 1.9 GHz CPU (up to 2.4 GHz w/ Turbo Core) with a Radeon HD 7400G 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 A4-4355M includes only one module with two integer-cores and a 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 A4-4355M performs significantly faster than the E-Series (e.g. E2-1800) and competes with Intels Celeron and Pentium ULV processors. 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 APU integrates a DirectX 11-compatible GPU called Radeon HD 7400G.

The power consumption of the A4-4355M APU is rated at 17 Watt TDP and is therefore comparable to Intels ULV-processors. Consequently, the A4-4355M is best suited for thin-and-light notebooks.

SeriesAMD A-Series
CodenameTrinity
Clock Rate1900 - 2400 MHz
Level 2 Cache2048 KB
Number of Cores / Threads2
Max. 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
64 Bit64 Bit support
Hardware VirtualizationAMD-V
Announcement Date10/01/2012

CPU Benchmarks

3DMark (2013): Fire Strike Standard Physics 1920x1080
0% 100%
min: 922     avg: 922 (4.55%)     max: 922 Points
3DMark (2013): Cloud Gate Standard Physics 1280x720
0% 100%
min: 718     avg: 718 (5.14%)     max: 718 Points
3DMark (2013): Ice Storm Standard Physics 1280x720
0% 100%
min: 9328     avg: 9328 (17.23%)     max: 9328 Points
TrueCrypt: Serpent Mean 100MB
0% 100%
min: 0.052     avg: 0.1 (1.9%)     max: 0.052 GB/s
TrueCrypt: Twofish Mean 100MB
0% 100%
min: 0.09     avg: 0.1 (3.82%)     max: 0.09 GB/s
TrueCrypt: AES Mean 100MB
0% 100%
min: 0.456     avg: 0.5 (4.69%)     max: 0.456 GB/s
WinRAR: Result
0% 100%
min: 884     avg: 884 (12.15%)     max: 884 KB/s
wPrime 2.0x: 1024m
0% 100%
min: 2128     avg: 2128 (76.01%)     max: 2128 seconds*
wPrime 2.0x: 32m
0% 100%
min: 63.5     avg: 63.5 (88.03%)     max: 63.5 seconds*
3DMark 11: Performance Physics 1280x720
0% 100%
min: 994     avg: 994 (7.53%)     max: 994 points
3DMark 06 - CPU:
0% 100%
min: 1239     avg: 1239 (11.98%)     max: 1239 Points
Cinebench R11.5: CPU Single 64Bit
0% 100%
min: 0.52     avg: 0.5 (24.43%)     max: 0.52 Points
Cinebench R11.5: CPU Multi 64Bit
0% 100%
min: 0.72     avg: 0.7 (2.88%)     max: 0.72 Points
Cinebench R10: Rendering Single CPUs 64Bit
0% 100%
min: 2108     avg: 2108 (8.35%)     max: 2108 Points
Cinebench R10: Rendering Multiple CPUs 64Bit
0% 100%
min: 3120     avg: 3120 (6.17%)     max: 3120 Points
Cinebench R10: Rendering Single 32Bit
0% 100%
min: 1690     avg: 1690 (23.82%)     max: 1690 Points
Cinebench R10: Rendering Multiple CPUs 32Bit
0% 100%
min: 2318     avg: 2318 (6.67%)     max: 2318 Points
Super Pi mod 1.5 XS 1M:
0% 100%
min: 22     avg: 22 (97.14%)     max: 22 Seconds*
Super Pi mod 1.5 XS 2M:
0% 100%
min: 95     avg: 95 (96.81%)     max: 95 Seconds*
Super Pi Mod 1.5 XS 32M:
0% 100%
min: 2448     avg: 2448 (89.18%)     max: 2448 Seconds*
- Range of benchmarks for this CPU
- Average benchmark score

Cinebench R10 in comparison
Intel Atom Z670 (min)
691 
...
Intel Core 2 Duo U7600
2289 
Intel Core 2 Duo L7100
2294 
Intel Celeron M U3400
2317 
AMD A-Series A4-4355M
2318 
Intel Celeron Dual-Core SU2300
2380 
AMD Athlon II Neo K345
2395 
Intel Celeron 847
2407.5 
...
Intel Xeon (Desktop) E5-2697 v2 (max)
34776 

Reviews for the AMD A-Series A4-4355M processor

HP Pavilion Sleekbook TouchSmart 15-b151ef (AMD Radeon HD 7400G, 15.6")
» HP Pavilion Sleekbook TouchSmart 15-b151ef - External Review

HP Pavilion Sleekbook TouchSmart 15-b153sg (AMD Radeon HD 7400G, 15.6")
» Review HP Pavilion Sleekbook TouchSmart 15-b153sg Notebook - Review
» HP Pavilion Sleekbook TouchSmart 15-b153sg - External Review

HP Pavilion Touchsmart 15-b129ea (AMD Radeon HD 7400G, 15.6")
» HP Pavilion Touchsmart 15-b129ea - 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
» 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 A8-3550MX
   2 GHz / 4 MB
» AMD A-Series A8-6410
   2 GHz / 2 MB
» AMD A-Series A6-6310
   2 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 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 T5500
   1.66 GHz / 2 MB
- Intel Core i5 430UM
   1.2 GHz / 0.5 MB + 3 MB
- Qualcomm Snapdragon 801 MSM8974AC
   2.45 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
+ Intel Celeron N2830
   2.16 GHz / 1024 KB
+ Qualcomm Snapdragon 801 APQ8074AB
   2.36 GHz / 2048 KB
+ Qualcomm Snapdragon 801 MSM8974AB
   2.36 GHz / 2048 KB
+ Intel Celeron N2820
   2.17 GHz / 1024 KB
+ Intel Celeron N2815
   1.86 GHz / 1024 KB
> Notebook / Laptop Reviews and News > FAQ / Tips / Technics > Notebook Processors > AMD A-Series A4-4355M Notebook Processor
Author: Klaus Hinum (Update: 2012-09-18)