GeForce GTX 260 216SP 55 nm vs Radeon R9 M295X

Intro

Compare all that to the Radeon R9 M295X, which features a clock frequency of 750 MHz and a GDDR5 memory frequency of 1375 MHz. It also features a 256-bit memory bus, and makes use of a 28 nm design. It is made up of 2048 SPUs, 128 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M295X		125 Watts
GeForce GTX 260 216SP 55 nm		171 Watts
	Difference: 46 Watts (37%)

Memory Bandwidth

In theory, the Radeon R9 M295X should be a lot faster than the GeForce GTX 260 216SP 55 nm in general. (explain)

Radeon R9 M295X		176000 MB/sec
GeForce GTX 260 216SP 55 nm		111888 MB/sec
	Difference: 64112 (57%)

Texel Rate

The Radeon R9 M295X is much (about 131%) faster with regards to texture filtering than the GeForce GTX 260 216SP 55 nm. (explain)

Radeon R9 M295X		96000 Mtexels/sec
GeForce GTX 260 216SP 55 nm		41472 Mtexels/sec
	Difference: 54528 (131%)

Pixel Rate

The Radeon R9 M295X is a lot (about 49%) more effective at FSAA than the GeForce GTX 260 216SP 55 nm, and also capable of handling higher resolutions without slowing down too much. (explain)

Radeon R9 M295X		24000 Mpixels/sec
GeForce GTX 260 216SP 55 nm		16128 Mpixels/sec
	Difference: 7872 (49%)

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 MB per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the interface width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range 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 texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.