GeForce GTX 580 3GB vs Radeon R9 M295X

Intro

Compare that to the Radeon R9 M295X, which features GPU clock speed of 750 MHz, and 4096 MB of GDDR5 memory running at 1375 MHz through a 256-bit bus. It also is comprised of 2048 Stream Processors, 128 TAUs, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M295X		125 Watts
GeForce GTX 580 3GB		244 Watts
	Difference: 119 Watts (95%)

Memory Bandwidth

The GeForce GTX 580 3GB should in theory perform a little bit faster than the Radeon R9 M295X in general. (explain)

GeForce GTX 580 3GB		192384 MB/sec
Radeon R9 M295X		176000 MB/sec
	Difference: 16384 (9%)

Texel Rate

The Radeon R9 M295X is quite a bit (about 94%) better at texture filtering than the GeForce GTX 580 3GB. (explain)

Radeon R9 M295X		96000 Mtexels/sec
GeForce GTX 580 3GB		49408 Mtexels/sec
	Difference: 46592 (94%)

Pixel Rate

The GeForce GTX 580 3GB is a lot (more or less 54%) faster with regards to AA than the Radeon R9 M295X, and capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 580 3GB		37056 Mpixels/sec
Radeon R9 M295X		24000 Mpixels/sec
	Difference: 13056 (54%)

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 max amount of information (counted in MB per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 amount of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.