GeForce GTX 285 2GB vs Radeon R9 M295X

Intro

Compare those specifications to the Radeon R9 M295X, which comes with clock speeds of 750 MHz on the GPU, and 1375 MHz on the 4096 MB of GDDR5 RAM. It features 2048 SPUs along with 128 TAUs and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M295X		125 Watts
GeForce GTX 285 2GB		204 Watts
	Difference: 79 Watts (63%)

Memory Bandwidth

The Radeon R9 M295X, in theory, should be a small bit faster than the GeForce GTX 285 2GB in general. (explain)

Radeon R9 M295X		176000 MB/sec
GeForce GTX 285 2GB		158976 MB/sec
	Difference: 17024 (11%)

Texel Rate

The Radeon R9 M295X is a lot (more or less 85%) more effective at AF than the GeForce GTX 285 2GB. (explain)

Radeon R9 M295X		96000 Mtexels/sec
GeForce GTX 285 2GB		51840 Mtexels/sec
	Difference: 44160 (85%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 M295X is the winner, but only just. (explain)

Radeon R9 M295X		24000 Mpixels/sec
GeForce GTX 285 2GB		20736 Mpixels/sec
	Difference: 3264 (16%)

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 largest amount of information (measured in MB per second) that can be moved across the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, 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 most pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the core clock speed. 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 rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.