GeForce 8800 GS vs Radeon HD 6670 (OEM)

Intro

Compare that to the Radeon HD 6670 (OEM), which makes use of a 40 nm design. AMD has set the core speed at 800 MHz. The GDDR5 memory works at a speed of 1000 MHz on this particular model. It features 480 SPUs as well as 24 TAUs and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM)		63 Watts
GeForce 8800 GS		105 Watts
	Difference: 42 Watts (67%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6670 (OEM) should be 67% faster than the GeForce 8800 GS overall, because of its greater bandwidth. (explain)

Radeon HD 6670 (OEM)		64000 MB/sec
GeForce 8800 GS		38400 MB/sec
	Difference: 25600 (67%)

Texel Rate

The GeForce 8800 GS will be quite a bit (more or less 38%) more effective at AF than the Radeon HD 6670 (OEM). (explain)

GeForce 8800 GS		26400 Mtexels/sec
Radeon HD 6670 (OEM)		19200 Mtexels/sec
	Difference: 7200 (38%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce 8800 GS is the winner, but it probably won't make a huge difference. (explain)

GeForce 8800 GS		6600 Mpixels/sec
Radeon HD 6670 (OEM)		6400 Mpixels/sec
	Difference: 200 (3%)

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 maximum amount of data (in units of MB per second) that can be moved past the external memory interface in one second. It's calculated by multiplying the bus width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out 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 is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.