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AMD A8-4500M

AMD A8-4500M

The AMD A8-4500M is a mobile quad-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 1.9 GHz CPU (up to 2.8 GHz w/ Turbo Core) with a relatively fast Radeon HD 7640G 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 A8-4500M 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 A8-4500M performs similar to the Llano-based A8-3500M. Single-threaded workloads can especially benefit from the new architecture and the updated Turbo Core functionality. If compared to Intels Core-i3-series, the A8-4500M offers less performance in most cases. Nonetheless, CPU performance from the AMD processor should be sufficient for all daily workloads like Office, Internet browsing and even light video editing or gaming.

The integrated DirectX 11-compatible Radeon HD 7640G offers only 256 shader cores of the Trinity chip (7660G: 384) and, thanks to Turbo Core, will operate anywhere between 497 to 686 MHz depending on the current application demand. On average, the performance of the HD 7640G GPU is comparable to a dedicated Radeon HD 7610M and is even faster than the HD Graphics 4000 as found in Intel’s Ivy Bridge.

The power consumption of the A8-4500M APU is rated at 35 Watt TDP and is therefore comparable to mid-range dual-core Ivy Bridge processors. Consequently, the A8-4500M is best suited for 14-inch notebooks or larger.

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 A8-4500M1900 - 2800 MHz4 / 4
AMD A8-4557M (compare)1900 - 2800 MHz4 / 4
AMD A8-4555M (compare)1600 - 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 Rate1900 - 2800 MHz
Level 2 Cache4 MB
Number of Cores / Threads4 / 4
Max. Power Consumption (TDP = Thermal Design Power)35 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 7640G (496 - 685 MHz)
64 Bit64 Bit support
Announcement Date05/15/2012

Benchmarks

Cinebench R11.5 - CPU Multi 64Bit
min: 1.68     avg: 1.7     median: 1.7 (1%)     max: 1.76 Points
Cinebench R11.5 - CPU Single 64Bit
min: 0.56     avg: 0.7     median: 0.7 (31%)     max: 0.71 Points
Cinebench R10 - Rendering Single 32Bit
min: 1709     avg: 1803.5     median: 1820.5 (25%)     max: 1862 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 4536     avg: 4825.3     median: 4872 (10%)     max: 4950 Points
Cinebench R10 - Rendering Multiple CPUs 64Bit
min: 6524     avg: 6770.2     median: 6795 (17%)     max: 6958 Points
Cinebench R10 - Rendering Single CPUs 64Bit
min: 2355     avg: 2475.5     median: 2475.5 (20%)     max: 2593 Points
wPrime 2.0x - 1024m *
min: 1000.59     avg: 1028.4     median: 1038.6 (12%)     max: 1039.24 seconds
wPrime 2.0x - 32m *
min: 30.607     avg: 31.2     median: 31.5 (6%)     max: 31.636 seconds
TrueCrypt - Serpent Mean 100MB
0.1 GB/s (7%)
3DMark 06 - CPU
min: 2282     avg: 2406     median: 2438 (19%)     max: 2451 Points
Super Pi mod 1.5 XS 1M *
min: 34.586     avg: 38.5     median: 40.8 (9%)     max: 41.277 Seconds
Super Pi mod 1.5 XS 2M *
min: 78.188     avg: 87.1     median: 91.9 (4%)     max: 93.803 Seconds
Super Pi Mod 1.5 XS 32M *
min: 2034.03     avg: 2306.3     median: 2395.7 (11%)     max: 2431.28 Seconds
SiSoft Sandra Dhrystone (MIPS)
min: 26660     avg: 27698     median: 26700 (13%)     max: 30470 MIPS
SiSoft Sandra Whetstone (MFLOPS)
min: 18760     avg: 19672     median: 18780 (14%)     max: 23120 MFLOPS
3DMark Vantage - P CPU no PhysX 1280x1024
min: 5119     avg: 5398.6     median: 5348 (10%)     max: 5665 Points
3DMark 11 - Performance Physics 1280x720
min: 1945     avg: 2213.3     median: 2243 (14%)     max: 2410 points
3DMark - Ice Storm Standard Physics 1280x720
min: 18472     avg: 19251.2     median: 19286 (12%)     max: 19813 Points
3DMark - Cloud Gate Standard Physics 1280x720
min: 1514     avg: 1547.8     median: 1540 (4%)     max: 1600 Points
3DMark - Fire Strike Physics 1920x1080
min: 2129     avg: 2163     median: 2149 (9%)     max: 2242 Points
Geekbench 2 - 32 Bit - Stream
min: 4131     avg: 4177.3     median: 4131 (33%)     max: 4270 Points
Geekbench 2 - 32 Bit - Memory
min: 3032     avg: 3107     median: 3032 (27%)     max: 3257 Points
Geekbench 2 - 32 Bit - Floating Point
min: 5242     avg: 5272     median: 5242 (15%)     max: 5332 Points
Geekbench 2 - 32 Bit - Integer
min: 3925     avg: 3971.7     median: 3925 (12%)     max: 4065 Points
Geekbench 2 - 32 Bit - Total Score
min: 4227     avg: 4273.7     median: 4227 (16%)     max: 4367 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 A8-4500M processor

Acer Aspire V3-551-8458 (AMD Radeon HD 7640G, 15.6")
» Acer Aspire V3-551-8458 - External Review

Asus A55N-SX008 (AMD Radeon HD 7520G, 15.6")
» Asus A55N-SX008 - External Review

Asus K75DE-TY068H (AMD Radeon HD 7640G + HD 7670M Dual Graphics, 17.3")
» Review Asus K75DE Notebook - Review

HP Pavilion m6-1060SM (AMD Radeon HD 7520G, 15.6")
»