GeForce GTX 285 1GB vs Radeon R9 270X

Intro

Compare those specs to the Radeon R9 270X, which features GPU clock speed of 1000 MHz, and 2048 MB of GDDR5 RAM set to run at 1400 MHz through a 256-bit bus. It also is comprised of 1280 Stream Processors, 80 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 270X		180 Watts
GeForce GTX 285 1GB		204 Watts
	Difference: 24 Watts (13%)

Memory Bandwidth

The Radeon R9 270X, in theory, should perform a small bit faster than the GeForce GTX 285 1GB in general. (explain)

Radeon R9 270X		179200 MB/sec
GeForce GTX 285 1GB		158976 MB/sec
	Difference: 20224 (13%)

Texel Rate

The Radeon R9 270X is quite a bit (more or less 54%) faster with regards to texture filtering than the GeForce GTX 285 1GB. (explain)

Radeon R9 270X		80000 Mtexels/sec
GeForce GTX 285 1GB		51840 Mtexels/sec
	Difference: 28160 (54%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R9 270X is superior to the GeForce GTX 285 1GB, by a large margin. (explain)

Radeon R9 270X		32000 Mpixels/sec
GeForce GTX 285 1GB		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 (counted in MB per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

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