Geforce GTX 670 vs Radeon R9 M265X

Intro

Compare all of that to the Radeon R9 M265X, which comes with clock speeds of 575 MHz on the GPU, and 1125 MHz on the 2048 MB of GDDR5 memory. It features 640 SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Geforce GTX 670 will be 167% quicker than the Radeon R9 M265X overall, because of its higher bandwidth. (explain)

Geforce GTX 670		192000 MB/sec
Radeon R9 M265X		72000 MB/sec
	Difference: 120000 (167%)

Texel Rate

The Geforce GTX 670 is a lot (more or less 346%) better at anisotropic filtering than the Radeon R9 M265X. (explain)

Geforce GTX 670		102480 Mtexels/sec
Radeon R9 M265X		23000 Mtexels/sec
	Difference: 79480 (346%)

Pixel Rate

If using high levels of AA is important to you, then the Geforce GTX 670 is a better choice, and very much so. (explain)

Geforce GTX 670		29280 Mpixels/sec
Radeon R9 M265X		9200 Mpixels/sec
	Difference: 20080 (218%)

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 data (counted in megabytes per second) that can be moved across the external memory interface within a second. It is calculated by multiplying the bus width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 once 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 texture map elements (texels) that are processed per second. This is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.