AMD Radeon R6 M255DX
The AMD Radeon R7 M255DX is a Hybrid Crossfire combination of the integrated Kaveri Radeon R5 (in the A10-7300 or A8-7100 APU e.g.) and a dedicated Radeon R57 M230, M230X, or M255 (called Dual Graphics - DX). Both graphics cards use the AFR mode (alternate frame rendering) to each render a frame. Around 30 fps this Dual Graphics combination may suffer from micro stuttering due to different frame latencies.
The performance depends on the driver support for the used game. In some cases the game engine will only use the dedicated graphics card and therefore the M255DX may not be faster than e.g. a M230 alone. The other end of the spectrum some games like Tomb Raider achieve significant higher fps rates. However, there are some games where Dual Graphics is even slower than with disabled settings, so the user might need to test the settings out.
The shaders of both GPUs can be used for OpenCL calculations and therefore make use of both GPUs.
Furthermore, the M255DX supports Mantle, Eyefinity and Enduro to in battery mode (use of the integrated GPU alone).
The maximum power consumption can be quite high using Dual-Graphics as both GPUs of the APU and the dedicated graphics card are running.
| Manufacturer | AMD |
| Codename | Jet UL(T) DDR3 |
| Architecture | GCN |
| Pipelines | 576 - unified |
| Core Speed | 855 / 514 MHz |
| Memory Type | DDR3 |
| Shared Memory | yes |
| DirectX | DirectX 12, Shader 5.0 |
| technology | 28 nm |
| Features | App Acceleration, PowerPlay, PowerTune, ZeroCore, Enduro, Eyefinity, Mantle |
| Notebook Size | medium sized |
| Date of Announcement | 04.06.2014 |
| Link to Manufacturer Page | http://www.amd.com/US/PRODUCTS/NOTEBOOK/... |
Benchmarks
Performance Rating - 3DMark 11 + Fire Strike + Time Spy
5.9 pt (7%)
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3DMark - 3DMark Cloud Gate Score
min: 2663 avg: 3516 median: 3515.5 (5%) max: 4368 Points
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3DMark - 3DMark Cloud Gate Graphics
min: 4681 avg: 7172 median: 7172 (4%) max: 9663 Points
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3DMark - 3DMark Fire Strike Standard Score
min: 518 avg: 885 median: 885 (3%) max: 1252 Points
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3DMark - 3DMark Fire Strike Standard Graphics
min: 670 avg: 1115 median: 1114.5 (3%) max: 1559 Points
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3DMark - 3DMark Ice Storm Graphics
min: 46017 avg: 50324 median: 50324 (7%) max: 54631 Points
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3DMark 11 - 3DM11 Performance Score
min: 1857 avg: 1979 median: 1979 (5%) max: 2101 Points
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3DMark 11 - 3DM11 Performance GPU
min: 2080 avg: 2198 median: 2198 (4%) max: 2316 Points
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NVIDIA GeForce GTX 550 Ti 3%
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3DMark Vantage
3DM Vant. Perf. total +3DMark Vantage - 3DM Vant. Perf. total
5008 Points (6%)
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3DM Vant. Perf. GPU no PhysX +3DMark Vantage - 3DM Vant. Perf. GPU no PhysX
5035 Points (6%)
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3DMark 03 - 3DMark 03 - Standard
14432 Points (8%)
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Cinebench R10 Cinebench R10 Shading (32bit) +Cinebench R10 - Cinebench R10 Shading (32bit)
min: 4109 avg: 4250 median: 4250 (21%) max: 4391 points
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Cinebench R11.5 Cinebench R11.5 OpenGL 64 Bit +Cinebench R11.5 - Cinebench R11.5 OpenGL 64 Bit
min: 21.05 avg: 22.5 median: 22.5 (13%) max: 23.92 fps
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Cinebench R15
Cinebench R15 OpenGL 64 Bit +Cinebench R15 - Cinebench R15 OpenGL 64 Bit
min: 23.91 avg: 24.9 median: 24.9 (10%) max: 25.84 fps
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Cinebench R15 OpenGL Ref. Match 64 Bit +Cinebench R15 - Cinebench R15 OpenGL Ref. Match 64 Bit
98 % (98%)
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GFXBench (DX / GLBenchmark) 2.7
GLBench 2.7 T-Rex HD Offscreen C24Z16 +GFXBench (DX / GLBenchmark) 2.7 - GLBench 2.7 T-Rex HD Offscreen C24Z16
77 fps (1%)
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GLBench 2.7 T-Rex HD Onscreen C24Z16 +GFXBench (DX / GLBenchmark) 2.7 - GLBench 2.7 T-Rex HD Onscreen C24Z16
56.1 fps (2%)
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GFXBench 3.0 - GFXBench 3.0 Manhattan Offscreen
min: 19.7 avg: 21.6 median: 21.6 (3%) max: 23.5 fps
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GFXBench 3.0 - GFXBench 3.0 Manhattan
min: 30 avg: 35.3 median: 35.3 (10%) max: 40.6 fps
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LuxMark v2.0 64Bit - LuxMark v2.0 Room GPU
min: 231 avg: 276 median: 275.5 (3%) max: 320 Samples/s
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LuxMark v2.0 64Bit - LuxMark v2.0 Sala GPU
min: 431 avg: 502 median: 501.5 (3%) max: 572 Samples/s
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ComputeMark v2.1 - ComputeMark v2.1 Result
min: 830 avg: 882 median: 882 (2%) max: 934 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
Game Benchmarks
The following benchmarks stem from our benchmarks of review laptops. The performance depends on the used graphics memory, clock rate, processor, system settings, drivers, and operating systems. So the results don't have to be representative for all laptops with this GPU. For detailed information on the benchmark results, click on the fps number.
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» The benchmarks indicate that the game is not playable in the tested settings.
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» The benchmarks indicate that the game is not playable in the tested settings.
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» The benchmarks indicate that the game is not playable in the tested settings.
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» The benchmarks indicate that the game is not playable in the tested settings.
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» With all tested laptops playable in detail settings low.
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» The benchmarks indicate that the game is not playable in the tested settings.
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» The benchmarks indicate that the game is not playable in the tested settings.
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» The benchmarks indicate that the game is not playable in the tested settings.
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» The benchmarks indicate that the game is not playable in the tested settings.
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» With all tested laptops playable in detail settings low.
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» The benchmarks indicate that the game is not playable in the tested settings.
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» With all tested laptops playable in detail settings low.
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» The benchmarks indicate that the game is not playable in the tested settings.
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» The benchmarks indicate that the game is not playable in the tested settings.
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» The benchmarks indicate that the game is not playable in the tested settings.
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» The benchmarks indicate that the game is not playable in the tested settings.
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» The benchmarks indicate that the game is not playable in the tested settings.
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