GeForce GTX 260 vs Radeon R9 M375X

Intro

Compare those specs to the Radeon R9 M375X, which makes use of a 28 nm design. AMD has clocked the core speed at 1015 MHz. The GDDR5 memory runs at a frequency of 1125 MHz on this particular card. It features 640 SPUs as well as 40 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTX 260, in theory, should perform a lot faster than the Radeon R9 M375X overall. (explain)

GeForce GTX 260		111888 MB/sec
Radeon R9 M375X		72000 MB/sec
	Difference: 39888 (55%)

Texel Rate

The Radeon R9 M375X is a small bit (about 10%) better at texture filtering than the GeForce GTX 260. (explain)

Radeon R9 M375X		40600 Mtexels/sec
GeForce GTX 260		36864 Mtexels/sec
	Difference: 3736 (10%)

Pixel Rate

The Radeon R9 M375X will be a little bit (more or less 1%) more effective at FSAA than the GeForce GTX 260, and also should be able to handle higher resolutions while still performing well. (explain)

Radeon R9 M375X		16240 Mpixels/sec
GeForce GTX 260		16128 Mpixels/sec
	Difference: 112 (1%)

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 information (counted in MB per second) that can be transported across the external memory interface in a second. It is calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total texture units by the core clock 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 a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.