Geforce GTX 680 vs Radeon HD 5830

Intro

Compare that to the Radeon HD 5830, which has a clock frequency of 800 MHz and a GDDR5 memory speed of 1000 MHz. It also uses a 256-bit memory bus, and makes use of a 40 nm design. It is made up of 1120(224x5) SPUs, 56 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5830		175 Watts
Geforce GTX 680		195 Watts
	Difference: 20 Watts (11%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 680 is 50% faster than the Radeon HD 5830 in general, due to its greater data rate. (explain)

Geforce GTX 680		192256 MB/sec
Radeon HD 5830		128000 MB/sec
	Difference: 64256 (50%)

Texel Rate

The Geforce GTX 680 will be quite a bit (approximately 187%) faster with regards to AF than the Radeon HD 5830. (explain)

Geforce GTX 680		128768 Mtexels/sec
Radeon HD 5830		44800 Mtexels/sec
	Difference: 83968 (187%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Geforce GTX 680 is the winner, by far. (explain)

Geforce GTX 680		32192 Mpixels/sec
Radeon HD 5830		12800 Mpixels/sec
	Difference: 19392 (152%)

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 largest amount of information (counted in megabytes per second) that can be transported across the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.