Radeon HD 5770 Mac vs 4870 Mac |
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Differences What are the advantages of each
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| Higher effective memory clock speed | 4,780 MHz | vs | 3,400 MHz | More than 40% higher effective memory clock speed | |||
|---|---|---|---|---|---|---|---|
| Higher clock speed | 850 MHz | vs | 750 MHz | Around 15% higher clock speed | |||
| Significantly higher memory clock speed | 1,195 MHz | vs | 850 MHz | More than 40% higher memory clock speed | |||
| Lower TDP | 108W | vs | 150W | Around 30% lower TDP | |||
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| Higher memory bandwidth | 108.8 GB/s | vs | 76.48 GB/s | More than 40% higher memory bandwidth | |||
| Wider memory bus | 256 bit | vs | 128 bit | 2x wider memory bus | |||
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Features Key features of the Radeon HD 5770 Mac vs 4870 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 | Radeon HD 5770 Mac | vs | 4870 Mac |
|---|---|---|---|
| GPU brand | ATI | ATI | |
| GPU name | Juniper | RV770 | |
| Market | Desktop | Desktop | |
| Clock speed | 850 MHz | 750 MHz | |
| Is dual GPU | No | No | |
| Reference card | None | None | |
raw performance | |||
| Shading units | 800 | 800 | |
| Texture mapping units | 40 | 40 | |
| Render output processors | 16 | 16 | |
| Compute units | 10 | 10 | |
| Pixel rate | 13.6 GPixel/s | 12 GPixel/s | |
| Texture rate | 34 GTexel/s | 30 GTexel/s | |
| Floating-point performance | 1,360 GFLOPS | 1,200 GFLOPS | |
memory | Radeon HD 5770 Mac | vs | 4870 Mac |
|---|---|---|---|
| Memory clock speed | 1,195 MHz | 850 MHz | |
| Effective memory clock speed | 4,780 MHz | 3,400 MHz | |
| Memory bus | 128 bit | 256 bit | |
| Memory | 1,024 MB | 512 MB | |
| Memory type | GDDR5 | GDDR5 | |
| Memory bandwidth | 76.48 GB/s | 108.8 GB/s | |
noise and power | |||
| TDP | 108W | 150W | |
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