GeForce 9800 GTX+ vs Radeon HD 5670

Intro

Compare those specifications to the Radeon HD 5670, which comes with 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 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+		145 Watts
	Difference: 84 Watts (138%)

Memory Bandwidth

Performance-wise, the GeForce 9800 GTX+ should in theory be just a bit superior to the Radeon HD 5670 overall. (explain)

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

Texel Rate

The GeForce 9800 GTX+ will be a lot (approximately 205%) faster with regards to AF than the Radeon HD 5670. (explain)

GeForce 9800 GTX+		47232 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 31732 (205%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce 9800 GTX+ is a better choice, by a large margin. (explain)

GeForce 9800 GTX+		11808 Mpixels/sec
Radeon HD 5670		6200 Mpixels/sec
	Difference: 5608 (90%)

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 (in units of MB per second) that can be moved over the external memory interface within a second. It is calculated by multiplying the interface width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better 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 applied per second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines 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 fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.