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.
| Series | AMD A-Series |
| Codename | Trinity |
| Series: A-Series Trinity | |
| Clock Rate | 1900 - 2800 MHz |
| Level 2 Cache | 4 MB |
| Number of Cores / Threads | 4 / 4 |
| Max. Power Consumption (TDP = Thermal Design Power) | 35 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 7640G (496 - 685 MHz) |
| 64 Bit | 64 Bit support |
| Announcement Date | 05/15/2012 |
|
Benchmarks
Cinebench R11.5 - CPU Multi 64Bit
min: 1.68 avg: 1.7 median: 1.7 (50%) max: 1.76 Points
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Cinebench R11.5 - CPU Single 64Bit
min: 0.56 avg: 0.7 median: 0.7 (51%) max: 0.71 Points
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Cinebench R10 - Rendering Single 32Bit
min: 1709 avg: 1803.5 median: 1820.5 (40%) max: 1862 Points
AMD Geode LX 800 -93%
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Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 4536 avg: 4825.3 median: 4872 (47%) max: 4950 Points
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Intel Core 2 Duo (Desktop) E6600 -3%
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Cinebench R10 - Rendering Multiple CPUs 64Bit
min: 6524 avg: 6770.2 median: 6795 (60%) max: 6958 Points
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Cinebench R10 - Rendering Single CPUs 64Bit
min: 2355 avg: 2475.5 median: 2475.5 (43%) max: 2593 Points
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wPrime 2.0x - 1024m *
min: 1000.59 avg: 1028.4 median: 1038.6 (12%) max: 1039.24 seconds
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VIA C3-M C3-M-1200 723%
wPrime 2.0x - 32m *
min: 30.607 avg: 31.2 median: 31.5 (6%) max: 31.636 seconds
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WinRAR - Result
1777 KB/s (49%)
| Asus K75D Sample | Radeon HD 7640G | 4096 MB | | | 1777 |
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X264 HD Benchmark 4.0 - Pass 2
10.8 fps (51%)
| Asus K75D Sample | Radeon HD 7640G | 4096 MB | | | 10.84 |
Intel Pentium 4 2.4 GHz -83%
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X264 HD Benchmark 4.0 - Pass 1
58.4 fps (54%)
| Asus K75D Sample | Radeon HD 7640G | 4096 MB | | | 58.39 |
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TrueCrypt - Serpent Mean 100MB
0.1 GB/s (12%)
| Asus K75D Sample | Radeon HD 7640G | 4096 MB | | | 0.122 |
Intel Pentium 4 2.4 GHz -83%
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TrueCrypt - Twofish Mean 100MB
0.2 GB/s (34%)
| Asus K75D Sample | Radeon HD 7640G | 4096 MB | | | 0.221 |
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TrueCrypt - AES Mean 100MB
1.1 GB/s (50%)
| Asus K75D Sample | Radeon HD 7640G | 4096 MB | | | 1.1 |
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min: 2282 avg: 2406 median: 2438 (58%) max: 2451 Points
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Intel Core 2 Duo (Desktop) E6700 -2%
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min: 34.586 avg: 38.5 median: 40.8 (9%) max: 41.277 Seconds
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Intel Celeron M 530 -1%
Intel Pentium 4 560 -1%
Intel Core Duo T2050 -1%
AMD Mobile Athlon 64 4000+ 0%
Intel Core Duo T2250 1%
Intel Pentium Dual Core T2080 1%
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VIA C3-M C3-M-1200 1102%
min: 78.188 avg: 87.1 median: 91.9 (4%) max: 93.803 Seconds
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Intel Core 2 Duo T5200 -2%
AMD Mobile Athlon 64 4000+ -2%
Intel Core Duo T2300 0%
Intel Core Duo T2250 0%
Intel Core 2 Duo L7100 3%
Intel Pentium M 770 5%
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Super Pi Mod 1.5 XS 32M *
min: 2034.03 avg: 2306.3 median: 2395.7 (11%) max: 2431.28 Seconds
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Intel Pentium D 820 -1%
Intel Pentium 4 630 -1%
AMD Mobile Sempron 3800+ 0%
Intel Pentium M 760 0%
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VIA C3-M C3-M-1200 876%
SiSoft Sandra Dhrystone (MIPS)
min: 26660 avg: 27698 median: 26700 (49%) max: 30470 MIPS
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Intel Core 2 Extreme (Desktop) X6800 -3%
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SiSoft Sandra Whetstone (MFLOPS)
min: 18760 avg: 19672 median: 18780 (53%) max: 23120 MFLOPS
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Intel Core 2 Extreme (Desktop) X6800 -5%
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Windows 7 Experience Index - Processor
6.7 points (88%)
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3DMark Vantage - P CPU no PhysX 1280x1024
min: 5119 avg: 5398.6 median: 5348 (22%) max: 5665 Points
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3DMark 11 - Performance Physics 1280x720
min: 1945 avg: 2213.3 median: 2243 (57%) max: 2410 points
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3DMark - Ice Storm Standard Physics 1280x720
min: 18472 avg: 19251.2 median: 19286 (12%) max: 19813 Points
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AMD A8-4500M
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3DMark - Cloud Gate Standard Physics 1280x720
min: 1514 avg: 1547.8 median: 1540 (52%) max: 1600 Points
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3DMark - Fire Strike Physics 1920x1080
min: 2129 avg: 2163 median: 2149 (50%) max: 2242 Points
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Geekbench 2 - 32 Bit - Stream
min: 4131 avg: 4177.3 median: 4131 (50%) max: 4270 Points
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Geekbench 2 - 32 Bit - Memory
min: 3032 avg: 3107 median: 3032 (45%) max: 3257 Points
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Geekbench 2 - 32 Bit - Floating Point
min: 5242 avg: 5272 median: 5242 (27%) max: 5332 Points
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Geekbench 2 - 32 Bit - Integer
min: 3925 avg: 3971.7 median: 3925 (48%) max: 4065 Points
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Geekbench 2 - 32 Bit - Total Score
min: 4227 avg: 4273.7 median: 4227 (39%) max: 4367 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
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