GeForce GTX 285 1GB vs Radeon R9 M375X

Intro

Compare those specs to the Radeon R9 M375X, which has GPU clock speed of 1015 MHz, and 4096 MB of GDDR5 RAM set to run at 1125 MHz through a 128-bit bus. It also features 640 SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the GeForce GTX 285 1GB should in theory be a lot better than the Radeon R9 M375X overall. (explain)

GeForce GTX 285 1GB		158976 MB/sec
Radeon R9 M375X		72000 MB/sec
	Difference: 86976 (121%)

Texel Rate

The GeForce GTX 285 1GB is quite a bit (more or less 28%) faster with regards to AF than the Radeon R9 M375X. (explain)

GeForce GTX 285 1GB		51840 Mtexels/sec
Radeon R9 M375X		40600 Mtexels/sec
	Difference: 11240 (28%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 285 1GB is the winner, by a large margin. (explain)

GeForce GTX 285 1GB		20736 Mpixels/sec
Radeon R9 M375X		16240 Mpixels/sec
	Difference: 4496 (28%)

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 (measured in megabytes per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the interface width by its memory speed. If it uses DDR memory, it must 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.