GeForce 9800 GTX vs Radeon HD 5750 1GB

Intro

Compare those specifications to the Radeon HD 5750 1GB, which features a GPU core clock speed of 700 MHz, and 1024 MB of GDDR5 memory running at 1150 MHz through a 128-bit bus. It also is comprised of 720(144x5) Stream Processors, 36 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 1GB		86 Watts
GeForce 9800 GTX		140 Watts
	Difference: 54 Watts (63%)

Memory Bandwidth

In theory, the Radeon HD 5750 1GB is 5% quicker than the GeForce 9800 GTX overall, due to its greater data rate. (explain)

Radeon HD 5750 1GB		73600 MB/sec
GeForce 9800 GTX		70400 MB/sec
	Difference: 3200 (5%)

Texel Rate

The GeForce 9800 GTX is quite a bit (about 71%) more effective at anisotropic filtering than the Radeon HD 5750 1GB. (explain)

GeForce 9800 GTX		43200 Mtexels/sec
Radeon HD 5750 1GB		25200 Mtexels/sec
	Difference: 18000 (71%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 5750 1GB is superior to the GeForce 9800 GTX, but not by far. (explain)

Radeon HD 5750 1GB		11200 Mpixels/sec
GeForce 9800 GTX		10800 Mpixels/sec
	Difference: 400 (4%)

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 information (counted in megabytes per second) that can be moved over the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.