GeForce 8800 Ultra vs Radeon HD 6670 (OEM) 1GB

Intro

Compare all of that to the Radeon HD 6670 (OEM) 1GB, which features clock speeds of 800 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 480 SPUs along with 24 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM) 1GB		63 Watts
GeForce 8800 Ultra		171 Watts
	Difference: 108 Watts (171%)

Memory Bandwidth

Theoretically speaking, the GeForce 8800 Ultra should perform a lot faster than the Radeon HD 6670 (OEM) 1GB overall. (explain)

GeForce 8800 Ultra		103680 MB/sec
Radeon HD 6670 (OEM) 1GB		64000 MB/sec
	Difference: 39680 (62%)

Texel Rate

The GeForce 8800 Ultra is quite a bit (more or less 104%) more effective at anisotropic filtering than the Radeon HD 6670 (OEM) 1GB. (explain)

GeForce 8800 Ultra		39168 Mtexels/sec
Radeon HD 6670 (OEM) 1GB		19200 Mtexels/sec
	Difference: 19968 (104%)

Pixel Rate

The GeForce 8800 Ultra should be a lot (about 130%) faster with regards to full screen anti-aliasing than the Radeon HD 6670 (OEM) 1GB, and also capable of handling higher resolutions while still performing well. (explain)

GeForce 8800 Ultra		14688 Mpixels/sec
Radeon HD 6670 (OEM) 1GB		6400 Mpixels/sec
	Difference: 8288 (130%)

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 max amount of data (measured in megabytes per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.