GeForce 8800 GTX vs Radeon R9 M280X

Intro

Compare all of that to the Radeon R9 M280X, which has core clock speeds of 900 MHz on the GPU, and 1375 MHz on the 4096 MB of GDDR5 RAM. It features 896 SPUs as well as 56 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M280X		75 Watts
GeForce 8800 GTX		155 Watts
	Difference: 80 Watts (107%)

Memory Bandwidth

In theory, the Radeon R9 M280X will be 2% quicker than the GeForce 8800 GTX in general, due to its higher data rate. (explain)

Radeon R9 M280X		88000 MB/sec
GeForce 8800 GTX		86400 MB/sec
	Difference: 1600 (2%)

Texel Rate

The Radeon R9 M280X is quite a bit (more or less 37%) faster with regards to texture filtering than the GeForce 8800 GTX. (explain)

Radeon R9 M280X		50400 Mtexels/sec
GeForce 8800 GTX		36800 Mtexels/sec
	Difference: 13600 (37%)

Pixel Rate

The Radeon R9 M280X should be just a bit (about 4%) faster with regards to AA than the GeForce 8800 GTX, and will be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon R9 M280X		14400 Mpixels/sec
GeForce 8800 GTX		13800 Mpixels/sec
	Difference: 600 (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.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of information (in units of megabytes per second) that can be moved past the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the 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 texture map elements (texels) that are processed in one second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at 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 one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few 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.