Geforce GTX 680 vs Radeon HD 5670

Intro

Compare those specs to the Radeon HD 5670, which uses a 40 nm design. AMD has clocked the core frequency at 775 MHz. The GDDR5 memory runs at a frequency of 1000 MHz on this specific card. It features 400(80x5) SPUs as well as 20 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670		61 Watts
Geforce GTX 680		195 Watts
	Difference: 134 Watts (220%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 680 is 200% faster than the Radeon HD 5670 in general, due to its greater bandwidth. (explain)

Geforce GTX 680		192256 MB/sec
Radeon HD 5670		64000 MB/sec
	Difference: 128256 (200%)

Texel Rate

The Geforce GTX 680 will be much (approximately 731%) more effective at AF than the Radeon HD 5670. (explain)

Geforce GTX 680		128768 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 113268 (731%)

Pixel Rate

The Geforce GTX 680 will be much (about 419%) better at AA than the Radeon HD 5670, and also able to handle higher screen resolutions without losing too much performance. (explain)

Geforce GTX 680		32192 Mpixels/sec
Radeon HD 5670		6200 Mpixels/sec
	Difference: 25992 (419%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of data (in units of megabytes per second) that can be moved across the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.