GeForce 9800 GTX vs Radeon HD 5670

Intro

Compare all of that to the Radeon HD 5670, which makes use of a 40 nm design. AMD has clocked the core frequency at 775 MHz. The GDDR5 RAM works at a speed of 1000 MHz on this specific model. It features 400(80x5) SPUs as well as 20 TAUs and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670		61 Watts
GeForce 9800 GTX		140 Watts
	Difference: 79 Watts (130%)

Memory Bandwidth

In theory, the GeForce 9800 GTX is 10% faster than the Radeon HD 5670 overall, due to its greater bandwidth. (explain)

GeForce 9800 GTX		70400 MB/sec
Radeon HD 5670		64000 MB/sec
	Difference: 6400 (10%)

Texel Rate

The GeForce 9800 GTX is much (about 179%) faster with regards to anisotropic filtering than the Radeon HD 5670. (explain)

GeForce 9800 GTX		43200 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 27700 (179%)

Pixel Rate

The GeForce 9800 GTX will be quite a bit (about 74%) better at full screen anti-aliasing than the Radeon HD 5670, and should be capable of handling higher resolutions better. (explain)

GeForce 9800 GTX		10800 Mpixels/sec
Radeon HD 5670		6200 Mpixels/sec
	Difference: 4600 (74%)

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 moved over the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 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 AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core 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 output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.