GeForce GTX 970 vs Radeon R9 M265X

Intro

Compare those specs to the Radeon R9 M265X, which features clock speeds of 575 MHz on the GPU, and 1125 MHz on the 2048 MB of GDDR5 memory. It features 640 SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GTX 970 is 211% quicker than the Radeon R9 M265X overall, because of its higher data rate. (explain)

GeForce GTX 970		224000 MB/sec
Radeon R9 M265X		72000 MB/sec
	Difference: 152000 (211%)

Texel Rate

The GeForce GTX 970 will be quite a bit (about 375%) more effective at AF than the Radeon R9 M265X. (explain)

GeForce GTX 970		109200 Mtexels/sec
Radeon R9 M265X		23000 Mtexels/sec
	Difference: 86200 (375%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 970 is superior to the Radeon R9 M265X, and very much so. (explain)

GeForce GTX 970		67200 Mpixels/sec
Radeon R9 M265X		9200 Mpixels/sec
	Difference: 58000 (630%)

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 maximum amount of information (counted in megabytes per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the interface width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.