GeForce GTX 460 (OEM) vs Radeon R9 285

Intro

Compare all of that to the Radeon R9 285, which has a clock frequency of 918 MHz and a GDDR5 memory frequency of 1375 MHz. It also uses a 256-bit bus, and uses a 28 nm design. It features 1792 SPUs, 112 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 460 (OEM)		150 Watts
Radeon R9 285		190 Watts
	Difference: 40 Watts (27%)

Memory Bandwidth

The Radeon R9 285 should in theory be quite a bit faster than the GeForce GTX 460 (OEM) overall. (explain)

Radeon R9 285		176000 MB/sec
GeForce GTX 460 (OEM)		108800 MB/sec
	Difference: 67200 (62%)

Texel Rate

The Radeon R9 285 will be quite a bit (about 182%) better at anisotropic filtering than the GeForce GTX 460 (OEM). (explain)

Radeon R9 285		102816 Mtexels/sec
GeForce GTX 460 (OEM)		36400 Mtexels/sec
	Difference: 66416 (182%)

Pixel Rate

The Radeon R9 285 is quite a bit (more or less 41%) faster with regards to FSAA than the GeForce GTX 460 (OEM), and able to handle higher screen resolutions better. (explain)

Radeon R9 285		29376 Mpixels/sec
GeForce GTX 460 (OEM)		20800 Mpixels/sec
	Difference: 8576 (41%)

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 max amount of information (in units of megabytes per second) that can be transported over the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better 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 is calculated by multiplying the total amount 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.