GeForce GTX 470 vs Radeon R9 M275X

Intro

Compare all of that to the Radeon R9 M275X, which makes use of a 28 nm design. AMD has clocked the core frequency at 900 MHz. The GDDR5 RAM runs at a speed of 1125 MHz on this specific model. It features 640 SPUs along with 40 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M275X		50 Watts
GeForce GTX 470		215 Watts
	Difference: 165 Watts (330%)

Memory Bandwidth

The GeForce GTX 470 should in theory perform a lot faster than the Radeon R9 M275X in general. (explain)

GeForce GTX 470		133920 MB/sec
Radeon R9 M275X		72000 MB/sec
	Difference: 61920 (86%)

Texel Rate

The Radeon R9 M275X will be a bit (about 6%) better at texture filtering than the GeForce GTX 470. (explain)

Radeon R9 M275X		36000 Mtexels/sec
GeForce GTX 470		33992 Mtexels/sec
	Difference: 2008 (6%)

Pixel Rate

The GeForce GTX 470 should be quite a bit (about 69%) better at AA than the Radeon R9 M275X, and also will be capable of handling higher resolutions more effectively. (explain)

GeForce GTX 470		24280 Mpixels/sec
Radeon R9 M275X		14400 Mpixels/sec
	Difference: 9880 (69%)

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 information (in units of MB per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster 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 number of texture units by the core clock 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 in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the card's clock speed. 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 is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.