GeForce GTX 260 Core 216 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 memory running at 1125 MHz through a 128-bit bus. It also is made up of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTX 260 Core 216 should theoretically perform much faster than the Radeon R9 M375X overall. (explain)

GeForce GTX 260 Core 216		111888 MB/sec
Radeon R9 M375X		72000 MB/sec
	Difference: 39888 (55%)

Texel Rate

The GeForce GTX 260 Core 216 is a bit (more or less 2%) faster with regards to anisotropic filtering than the Radeon R9 M375X. (explain)

GeForce GTX 260 Core 216		41472 Mtexels/sec
Radeon R9 M375X		40600 Mtexels/sec
	Difference: 872 (2%)

Pixel Rate

The Radeon R9 M375X should be a bit (approximately 1%) faster with regards to FSAA than the GeForce GTX 260 Core 216, and also should be able to handle higher screen resolutions better. (explain)

Radeon R9 M375X		16240 Mpixels/sec
GeForce GTX 260 Core 216		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 largest amount of data (in units of MB per second) that can be transferred past the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better 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 per second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output 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 potential to reach the max fill rate.