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Features Key features of the Mobility Radeon HD 4850 Mac
memory bandwidth Rate at which data can be read from or stored in onboard memory
Mobility Radeon HD 4850 Mac
54.4 GB/s
Mobility Radeon HD 4670 Mac
25.28 GB/s
Radeon HD 6770M
57.6 GB/s
pixel rate Number of pixels a graphics card can render to the screen every second
Mobility Radeon HD 4850 Mac
8.05 GPixel/s
Mobility Radeon HD 4670 Mac
5.44 GPixel/s
Radeon HD 6770M
5.8 GPixel/s
texture rate Speed at which a graphics card can perform texture mapping
Mobility Radeon HD 4850 Mac
20.12 GTexel/s
Radeon HD 6770M
17.4 GTexel/s
Mobility Radeon HD 4670 Mac
21.76 GTexel/s
floating point performance How fast the gpu can crunch numbers
Mobility Radeon HD 4850 Mac
804.8 GFLOPS
Mobility Radeon HD 4670 Mac
435.2 GFLOPS
Radeon HD 6770M
696 GFLOPS
shading units Subcomponents of the gpu, these run in parallel to enable fast pixel shading
texture mapping units Built into each gpu, these resize and rotate bitmaps for texturing scenes
Specifications Full list of technical specs
gpu
GPU brand | ATI |
---|---|
GPU name | M98 |
Market | Laptop |
Clock speed | 503 MHz |
Is dual GPU | No |
Reference card | None |
raw performance
Shading units | 800 |
---|---|
Texture mapping units | 40 |
Render output processors | 16 |
Compute units | 10 |
Pixel rate | 8.05 GPixel/s |
Texture rate | 20.12 GTexel/s |
Floating-point performance | 804.8 GFLOPS |
memory
Memory clock speed | 850 MHz |
---|---|
Effective memory clock speed | 1,700 MHz |
Memory bus | 256 bit |
Memory | 512 MB |
Memory type | GDDR3 |
Memory bandwidth | 54.4 GB/s |

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Competitors
Compare | ATi Mobility Radeon HD 4670 Mac
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Compare | AMD Radeon HD 6770M
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Compare | AMD Radeon HD 6970M Mac
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Compare | AMD Radeon HD 6750M Mac
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Compare | AMD Radeon Pro 570
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Compare | AMD Radeon HD 6770M Mac
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Compare | ATi Radeon HD 5450
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