Geforce GTX 670 vs Radeon R9 M275X

Intro

Compare that to the Radeon R9 M275X, which features core speeds of 900 MHz on the GPU, and 1125 MHz on the 2048 MB of GDDR5 RAM. It features 640 SPUs along with 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M275X		50 Watts
Geforce GTX 670		170 Watts
	Difference: 120 Watts (240%)

Memory Bandwidth

The Geforce GTX 670 should theoretically be much faster than the Radeon R9 M275X in general. (explain)

Geforce GTX 670		192000 MB/sec
Radeon R9 M275X		72000 MB/sec
	Difference: 120000 (167%)

Texel Rate

The Geforce GTX 670 will be quite a bit (approximately 185%) better at anisotropic filtering than the Radeon R9 M275X. (explain)

Geforce GTX 670		102480 Mtexels/sec
Radeon R9 M275X		36000 Mtexels/sec
	Difference: 66480 (185%)

Pixel Rate

If using a high resolution is important to you, then the Geforce GTX 670 is the winner, by far. (explain)

Geforce GTX 670		29280 Mpixels/sec
Radeon R9 M275X		14400 Mpixels/sec
	Difference: 14880 (103%)

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 max amount of information (counted in megabytes per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the interface width by the speed of its memory. If the card has DDR type 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 AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core 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 rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.