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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
pixel rate Number of pixels a graphics card can render to the screen every second
texture rate Speed at which a graphics card can perform texture mapping
floating point performance How fast the gpu can crunch numbers
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
 | AMD Radeon HD 6770M Mac
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 | AMD Radeon HD 6970M Mac
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 | Nvidia GeForce 8800 GS Mac
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 | Nvidia GeForce GT 650M
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 | ATi Mobility Radeon HD 5670 Mac
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 | AMD Radeon Pro 555
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 | ATi Radeon HD 5450
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