Radeon HD 5770 X2 vs GeForce GTX 660 Ti |
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Differences What are the advantages of each
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| Is dual GPU | Yes | vs | No | About half of graphics cards are dual GPU | |||
|---|---|---|---|---|---|---|---|
| More render output processors | 32 | vs | 24 | 8 more render output processors | |||
| More shading units | 1,600 | vs | 1,344 | 256 more shading units | |||
| Wider memory bus | 256 bit | vs | 192 bit | Around 35% wider memory bus | |||
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| Higher effective memory clock speed | 6,008 MHz | vs | 4,800 MHz | More than 25% higher effective memory clock speed | |||
| Slightly higher clock speed | 915 MHz | vs | 850 MHz | Around 10% higher clock speed | |||
| Higher texture rate | 102.5 GTexel/s | vs | 68 GTexel/s | More than 50% higher texture rate | |||
| More texture mapping units | 112 | vs | 80 | 32 more texture mapping units | |||
| Higher memory clock speed | 1,502 MHz | vs | 1,200 MHz | More than 25% higher memory clock speed | |||
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Features Key features of the Radeon HD 5770 X2 vs GeForce GTX 660 Ti
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 X2 | vs | GeForce GTX 660 Ti |
|---|---|---|---|
| GPU brand | ATI | Nvidia | |
| GPU name | Juniper | GK104 | |
| Market | Desktop | Desktop | |
| Clock speed | 850 MHz | 915 MHz | |
| Is dual GPU | Yes | No | |
| Reference card | ATi Radeon HD 5770 X2 850 MHz 2 GB | Nvidia GeForce GTX 660 Ti 915 MHz 2 GB | |
raw performance | |||
| Shading units | 1,600 | 1,344 | |
| Texture mapping units | 80 | 112 | |
| Render output processors | 32 | 24 | |
| Pixel rate | 27.2 GPixel/s | 25.62 GPixel/s | |
| Texture rate | 68 GTexel/s | 102.5 GTexel/s | |
| Floating-point performance | 2,720 GFLOPS | 2,459.5 GFLOPS | |
memory | Radeon HD 5770 X2 | vs | GeForce GTX 660 Ti |
|---|---|---|---|
| Memory clock speed | 1,200 MHz | 1,502 MHz | |
| Effective memory clock speed | 4,800 MHz | 6,008 MHz | |
| Memory bus | 256 bit | 192 bit | |
| Memory | 2,048 MB | 2,048 MB | |
| Memory type | GDDR5 | GDDR5 | |
| Memory bandwidth | 153.6 GB/s | 144.2 GB/s |
