GeForce GTX 580 3GB vs Geforce GTX 770

Intro

Compare that to the Geforce GTX 770, which comes with a core clock speed of 1046 MHz and a GDDR5 memory speed of 1753 MHz. It also uses a 256-bit memory bus, and makes use of a 28 nm design. It features 1536 SPUs, 128 Texture Address Units, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 770		230 Watts
GeForce GTX 580 3GB		244 Watts
	Difference: 14 Watts (6%)

Memory Bandwidth

The Geforce GTX 770 should theoretically perform a bit faster than the GeForce GTX 580 3GB in general. (explain)

Geforce GTX 770		224384 MB/sec
GeForce GTX 580 3GB		192384 MB/sec
	Difference: 32000 (17%)

Texel Rate

The Geforce GTX 770 will be much (approximately 171%) faster with regards to texture filtering than the GeForce GTX 580 3GB. (explain)

Geforce GTX 770		133888 Mtexels/sec
GeForce GTX 580 3GB		49408 Mtexels/sec
	Difference: 84480 (171%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 580 3GB is superior to the Geforce GTX 770, but not by far. (explain)

GeForce GTX 580 3GB		37056 Mpixels/sec
Geforce GTX 770		33472 Mpixels/sec
	Difference: 3584 (11%)

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 (measured in MB per second) that can be transported across the external memory interface within a second. It's calculated by multiplying the card's interface width by its memory speed. In the case of DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, 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 texture units by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also 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 potential to reach the maximum fill rate.