GeForce GTX 580 3GB vs Radeon HD 5770

Intro

Compare those specs to the Radeon HD 5770, which features core clock speeds of 850 MHz on the GPU, and 1200 MHz on the 1024 MB of GDDR5 memory. It features 800(160x5) SPUs along with 40 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5770		108 Watts
GeForce GTX 580 3GB		244 Watts
	Difference: 136 Watts (126%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 580 3GB should be quite a bit faster than the Radeon HD 5770 in general. (explain)

GeForce GTX 580 3GB		192384 MB/sec
Radeon HD 5770		76800 MB/sec
	Difference: 115584 (151%)

Texel Rate

The GeForce GTX 580 3GB is much (more or less 45%) faster with regards to anisotropic filtering than the Radeon HD 5770. (explain)

GeForce GTX 580 3GB		49408 Mtexels/sec
Radeon HD 5770		34000 Mtexels/sec
	Difference: 15408 (45%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 580 3GB is a better choice, by a large margin. (explain)

GeForce GTX 580 3GB		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 maximum amount of data (in units of megabytes per second) that can be transferred across the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. In the case of DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the graphics 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 amount of pixels that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. The number 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 drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.