GeForce GTX 460 vs Radeon R9 M275X

Intro

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

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M275X		50 Watts
GeForce GTX 460		150 Watts
	Difference: 100 Watts (200%)

Memory Bandwidth

The GeForce GTX 460 should in theory perform just a bit faster than the Radeon R9 M275X in general. (explain)

GeForce GTX 460		86400 MB/sec
Radeon R9 M275X		72000 MB/sec
	Difference: 14400 (20%)

Texel Rate

The GeForce GTX 460 will be a bit (about 5%) better at AF than the Radeon R9 M275X. (explain)

GeForce GTX 460		37800 Mtexels/sec
Radeon R9 M275X		36000 Mtexels/sec
	Difference: 1800 (5%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 460 is superior to the Radeon R9 M275X, but it probably won't make a huge difference. (explain)

GeForce GTX 460		16200 Mpixels/sec
Radeon R9 M275X		14400 Mpixels/sec
	Difference: 1800 (13%)

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 largest amount of information (counted in MB per second) that can be transported across the external memory interface in a second. It's worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 again. If it uses 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 amount of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total number of texture units by the core clock 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 applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.