GeForce 8800 GTX vs Radeon R9 M270X

Intro

Compare that to the Radeon R9 M270X, which features a core clock frequency of 725 MHz and a GDDR5 memory speed of 1125 MHz. It also makes use of a 128-bit bus, and makes use of a 28 nm design. It features 640 SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce 8800 GTX should theoretically be a little bit faster than the Radeon R9 M270X in general. (explain)

GeForce 8800 GTX		86400 MB/sec
Radeon R9 M270X		72000 MB/sec
	Difference: 14400 (20%)

Texel Rate

The GeForce 8800 GTX should be quite a bit (about 27%) more effective at anisotropic filtering than the Radeon R9 M270X. (explain)

GeForce 8800 GTX		36800 Mtexels/sec
Radeon R9 M270X		29000 Mtexels/sec
	Difference: 7800 (27%)

Pixel Rate

The GeForce 8800 GTX should be a bit (approximately 19%) more effective at full screen anti-aliasing than the Radeon R9 M270X, and also should be able to handle higher screen resolutions better. (explain)

GeForce 8800 GTX		13800 Mpixels/sec
Radeon R9 M270X		11600 Mpixels/sec
	Difference: 2200 (19%)

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 information (measured in megabytes per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 are applied in one second. This number is worked out by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.