GeForce 8800 GT 512MB vs Radeon R9 295X2

Intro

Compare all of that to the Radeon R9 295X2, which makes use of a 28 nm design. AMD has set the core frequency at 1018 MHz. The GDDR5 memory is set to run at a speed of 1250 MHz on this particular card. 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 8800 GT 512MB		105 Watts
Radeon R9 295X2		500 Watts
	Difference: 395 Watts (376%)

Memory Bandwidth

Performance-wise, the Radeon R9 295X2 should theoretically be much better than the GeForce 8800 GT 512MB overall. (explain)

Radeon R9 295X2		640000 MB/sec
GeForce 8800 GT 512MB		57600 MB/sec
	Difference: 582400 (1011%)

Texel Rate

The Radeon R9 295X2 is quite a bit (more or less 966%) faster with regards to AF than the GeForce 8800 GT 512MB. (explain)

Radeon R9 295X2		358336 Mtexels/sec
GeForce 8800 GT 512MB		33600 Mtexels/sec
	Difference: 324736 (966%)

Pixel Rate

The Radeon R9 295X2 will be a lot (more or less 1257%) faster with regards to AA than the GeForce 8800 GT 512MB, and also should be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon R9 295X2		130304 Mpixels/sec
GeForce 8800 GT 512MB		9600 Mpixels/sec
	Difference: 120704 (1257%)

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: Bandwidth is the maximum amount of information (counted in megabytes per second) that can be moved over the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 again. If 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 number of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total texture units by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units 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 rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.