GeForce 9800 GTX vs Radeon HD 5670

Intro

Compare those specifications to the Radeon HD 5670, which has core clock speeds of 775 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 400(80x5) SPUs as well as 20 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 5670		61 Watts
GeForce 9800 GTX		140 Watts
	Difference: 79 Watts (130%)

Memory Bandwidth

Theoretically speaking, the GeForce 9800 GTX should perform a bit faster than the Radeon HD 5670 in general. (explain)

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

Texel Rate

The GeForce 9800 GTX should be a lot (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

If running with a high screen resolution is important to you, then the GeForce 9800 GTX is a better choice, and very much so. (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 largest amount of information (in units of MB per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the interface width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total amount of texture units by the core clock 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 in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.