GeForce 8800 GS vs Radeon HD 4670 512MB

Intro

Compare that to the Radeon HD 4670 512MB, which has GPU clock speed of 750 MHz, and 512 MB of GDDR4/GDDR3/DDR3/DDR2 RAM set to run at 1000 MHz through a 128-bit bus. It also is made up of 320(64x5) SPUs, 32 Texture Address Units, and 8 ROPs.

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

In theory, the GeForce 8800 GS should perform a small bit faster than the Radeon HD 4670 512MB in general. (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 small bit (about 10%) more effective at AF 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 using high levels of AA is important to you, then the GeForce 8800 GS is the winner, though only just barely. (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 largest amount of data (counted in megabytes per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the bus width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. 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 amount of texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. 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 quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.