GeForce 8800 GTS (G92) vs Radeon R9 390X 8G

Intro

Compare those specs to the Radeon R9 390X 8G, which comes with core speeds of 1050 MHz on the GPU, and 1500 MHz on the 8192 MB of GDDR5 RAM. It features 2816 SPUs as well as 176 TAUs and 64 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GTS (G92)		135 Watts
Radeon R9 390X 8G		275 Watts
	Difference: 140 Watts (104%)

Memory Bandwidth

The Radeon R9 390X 8G, in theory, should perform quite a bit faster than the GeForce 8800 GTS (G92) in general. (explain)

Radeon R9 390X 8G		384000 MB/sec
GeForce 8800 GTS (G92)		62080 MB/sec
	Difference: 321920 (519%)

Texel Rate

The Radeon R9 390X 8G will be quite a bit (more or less 344%) better at texture filtering than the GeForce 8800 GTS (G92). (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
GeForce 8800 GTS (G92)		41600 Mtexels/sec
	Difference: 143200 (344%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 390X 8G is superior to the GeForce 8800 GTS (G92), and very much so. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
GeForce 8800 GTS (G92)		10400 Mpixels/sec
	Difference: 56800 (546%)

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: Memory bandwidth is the largest amount of data (counted in MB per second) that can be moved past the external memory interface within a second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher 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 amount of texture units of the card by the core 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 one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.