GeForce GTX 295 vs Radeon R9 295X2

Intro

Compare those specs to the Radeon R9 295X2, which uses a 28 nm design. AMD has clocked the core frequency at 1018 MHz. The GDDR5 RAM works at a frequency of 1250 MHz on this specific model. It features 2816 SPUs as well as 176 TAUs and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 295		289 Watts
Radeon R9 295X2		500 Watts
	Difference: 211 Watts (73%)

Memory Bandwidth

In theory, the Radeon R9 295X2 should perform much faster than the GeForce GTX 295 in general. (explain)

Radeon R9 295X2		640000 MB/sec
GeForce GTX 295		223776 MB/sec
	Difference: 416224 (186%)

Texel Rate

The Radeon R9 295X2 will be quite a bit (about 289%) better at texture filtering than the GeForce GTX 295. (explain)

Radeon R9 295X2		358336 Mtexels/sec
GeForce GTX 295		92160 Mtexels/sec
	Difference: 266176 (289%)

Pixel Rate

The Radeon R9 295X2 should be quite a bit (approximately 304%) better at full screen anti-aliasing than the GeForce GTX 295, and should be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon R9 295X2		130304 Mpixels/sec
GeForce GTX 295		32256 Mpixels/sec
	Difference: 98048 (304%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be transferred across the external memory interface within a second. It's worked out by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, 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 number of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics 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 amount of pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core 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 rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.