GeForce GTX 285 2GB vs Radeon R9 270X

Intro

Compare all of that to the Radeon R9 270X, which uses a 28 nm design. AMD has clocked the core frequency at 1000 MHz. The GDDR5 memory works at a frequency of 1400 MHz on this model. It features 1280 SPUs as well as 80 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 270X		180 Watts
GeForce GTX 285 2GB		204 Watts
	Difference: 24 Watts (13%)

Memory Bandwidth

In theory, the Radeon R9 270X is 13% quicker than the GeForce GTX 285 2GB in general, due to its higher bandwidth. (explain)

Radeon R9 270X		179200 MB/sec
GeForce GTX 285 2GB		158976 MB/sec
	Difference: 20224 (13%)

Texel Rate

The Radeon R9 270X will be much (more or less 54%) better at AF than the GeForce GTX 285 2GB. (explain)

Radeon R9 270X		80000 Mtexels/sec
GeForce GTX 285 2GB		51840 Mtexels/sec
	Difference: 28160 (54%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 270X is the winner, by far. (explain)

Radeon R9 270X		32000 Mpixels/sec
GeForce GTX 285 2GB		20736 Mpixels/sec
	Difference: 11264 (54%)

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 (measured in megabytes per second) that can be moved past the external memory interface within a second. It's calculated by multiplying the bus width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.