GeForce GTX 295 vs Radeon R9 380X

Intro

Compare that to the Radeon R9 380X, which comes with clock speeds of 970 MHz on the GPU, and 1425 MHz on the 4096 MB of GDDR5 RAM. It features 2048 SPUs as well as 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 380X		190 Watts
GeForce GTX 295		289 Watts
	Difference: 99 Watts (52%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 295 should be 23% quicker than the Radeon R9 380X in general, due to its higher bandwidth. (explain)

GeForce GTX 295		223776 MB/sec
Radeon R9 380X		182400 MB/sec
	Difference: 41376 (23%)

Texel Rate

The Radeon R9 380X is much (more or less 35%) better at anisotropic filtering than the GeForce GTX 295. (explain)

Radeon R9 380X		124160 Mtexels/sec
GeForce GTX 295		92160 Mtexels/sec
	Difference: 32000 (35%)

Pixel Rate

The GeForce GTX 295 should be a little bit (approximately 4%) more effective at anti-aliasing than the Radeon R9 380X, and will be capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 295		32256 Mpixels/sec
Radeon R9 380X		31040 Mpixels/sec
	Difference: 1216 (4%)

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 (in units of megabytes per second) that can be transported over the external memory interface within a second. It's worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core 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 - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.