GeForce 8800 GTS (G80) 640MB vs Radeon R9 270X

Intro

Compare that to the Radeon R9 270X, which has a clock speed of 1000 MHz and a GDDR5 memory frequency of 1400 MHz. It also features a 256-bit memory bus, and makes use of a 28 nm design. It is comprised of 1280 SPUs, 80 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GTS (G80) 640MB		143 Watts
Radeon R9 270X		180 Watts
	Difference: 37 Watts (26%)

Memory Bandwidth

The Radeon R9 270X should theoretically perform quite a bit faster than the GeForce 8800 GTS (G80) 640MB in general. (explain)

Radeon R9 270X		179200 MB/sec
GeForce 8800 GTS (G80) 640MB		63360 MB/sec
	Difference: 115840 (183%)

Texel Rate

The Radeon R9 270X should be a lot (approximately 225%) better at anisotropic filtering than the GeForce 8800 GTS (G80) 640MB. (explain)

Radeon R9 270X		80000 Mtexels/sec
GeForce 8800 GTS (G80) 640MB		24624 Mtexels/sec
	Difference: 55376 (225%)

Pixel Rate

The Radeon R9 270X should be a lot (about 212%) faster with regards to FSAA than the GeForce 8800 GTS (G80) 640MB, and should be capable of handling higher resolutions without losing too much performance. (explain)

Radeon R9 270X		32000 Mpixels/sec
GeForce 8800 GTS (G80) 640MB		10260 Mpixels/sec
	Difference: 21740 (212%)

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 (counted in MB per second) that can be transferred over the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, 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 processed in one second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.