GeForce 8800 GTS (G92) vs Radeon HD 6770

Intro

Compare those specifications to the Radeon HD 6770, which makes use of a 40 nm design. AMD has clocked the core speed at 900 MHz. The GDDR5 RAM runs at a speed of 1050 MHz on this particular model. It features 800 SPUs along with 40 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770		108 Watts
GeForce 8800 GTS (G92)		135 Watts
	Difference: 27 Watts (25%)

Memory Bandwidth

In theory, the Radeon HD 6770 should perform a little bit faster than the GeForce 8800 GTS (G92) overall. (explain)

Radeon HD 6770		67200 MB/sec
GeForce 8800 GTS (G92)		62080 MB/sec
	Difference: 5120 (8%)

Texel Rate

The GeForce 8800 GTS (G92) is a little bit (about 16%) better at AF than the Radeon HD 6770. (explain)

GeForce 8800 GTS (G92)		41600 Mtexels/sec
Radeon HD 6770		36000 Mtexels/sec
	Difference: 5600 (16%)

Pixel Rate

The Radeon HD 6770 should be a lot (more or less 38%) more effective at anti-aliasing than the GeForce 8800 GTS (G92), and will be able to handle higher screen resolutions better. (explain)

Radeon HD 6770		14400 Mpixels/sec
GeForce 8800 GTS (G92)		10400 Mpixels/sec
	Difference: 4000 (38%)

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 maximum amount of data (measured in MB per second) that can be transferred over the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.