GeForce 8800 GTS (G80) 320MB vs Radeon HD 4730

Intro

Compare those specs to the Radeon HD 4730, which comes with clock speeds of 700 MHz on the GPU, and 900 MHz on the 512 MB of GDDR5 RAM. It features 640(128x5) SPUs along with 32 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4730		140 Watts
GeForce 8800 GTS (G80) 320MB		143 Watts
	Difference: 3 Watts (2%)

Memory Bandwidth

The GeForce 8800 GTS (G80) 320MB, in theory, should be just a bit faster than the Radeon HD 4730 in general. (explain)

GeForce 8800 GTS (G80) 320MB		63360 MB/sec
Radeon HD 4730		57600 MB/sec
	Difference: 5760 (10%)

Texel Rate

The GeForce 8800 GTS (G80) 320MB will be a bit (approximately 10%) better at anisotropic filtering than the Radeon HD 4730. (explain)

GeForce 8800 GTS (G80) 320MB		24624 Mtexels/sec
Radeon HD 4730		22400 Mtexels/sec
	Difference: 2224 (10%)

Pixel Rate

The GeForce 8800 GTS (G80) 320MB will be quite a bit (more or less 83%) faster with regards to full screen anti-aliasing than the Radeon HD 4730, and capable of handling higher screen resolutions while still performing well. (explain)

GeForce 8800 GTS (G80) 320MB		10260 Mpixels/sec
Radeon HD 4730		5600 Mpixels/sec
	Difference: 4660 (83%)

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: Bandwidth is the max amount of information (counted in MB per second) that can be transported past the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory speed. In the case of DDR RAM, the result should 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 amount of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the clock 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 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 potential to reach the max fill rate.