GeForce 8800 GS vs Radeon HD 4670 512MB

Intro

Compare all that to the Radeon HD 4670 512MB, which features GPU core speed of 750 MHz, and 512 MB of GDDR4/GDDR3/DDR3/DDR2 memory set to run at 1000 MHz through a 128-bit bus. It also is comprised of 320(64x5) SPUs, 32 TAUs, and 8 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4670 512MB		70 Watts
GeForce 8800 GS		105 Watts
	Difference: 35 Watts (50%)

Memory Bandwidth

The GeForce 8800 GS should theoretically be a bit faster than the Radeon HD 4670 512MB overall. (explain)

GeForce 8800 GS		38400 MB/sec
Radeon HD 4670 512MB		32000 MB/sec
	Difference: 6400 (20%)

Texel Rate

The GeForce 8800 GS should be a bit (about 10%) faster with regards to anisotropic filtering than the Radeon HD 4670 512MB. (explain)

GeForce 8800 GS		26400 Mtexels/sec
Radeon HD 4670 512MB		24000 Mtexels/sec
	Difference: 2400 (10%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce 8800 GS is superior to the Radeon HD 4670 512MB, but it probably won't make a huge difference. (explain)

GeForce 8800 GS		6600 Mpixels/sec
Radeon HD 4670 512MB		6000 Mpixels/sec
	Difference: 600 (10%)

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 data (counted in MB per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's 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 can be applied in one second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card 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 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 rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.