GeForce GTX 580 vs Radeon HD 5770

Intro

Compare those specs to the Radeon HD 5770, which makes use of a 40 nm design. AMD has set the core frequency at 850 MHz. The GDDR5 memory works at a speed of 1200 MHz on this specific model. It features 800(160x5) SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5770		108 Watts
GeForce GTX 580		244 Watts
	Difference: 136 Watts (126%)

Memory Bandwidth

The GeForce GTX 580 should in theory perform much faster than the Radeon HD 5770 in general. (explain)

GeForce GTX 580		192384 MB/sec
Radeon HD 5770		76800 MB/sec
	Difference: 115584 (151%)

Texel Rate

The GeForce GTX 580 is much (about 45%) better at anisotropic filtering than the Radeon HD 5770. (explain)

GeForce GTX 580		49408 Mtexels/sec
Radeon HD 5770		34000 Mtexels/sec
	Difference: 15408 (45%)

Pixel Rate

The GeForce GTX 580 will be quite a bit (approximately 172%) better at anti-aliasing than the Radeon HD 5770, and also will be capable of handling higher resolutions without losing too much performance. (explain)

GeForce GTX 580		37056 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 23456 (172%)

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: Memory bandwidth is the largest amount of data (in units of megabytes per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the bus width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.