GeForce 9800 GX2 vs Radeon HD 5750 512MB

Intro

Compare all of that to the Radeon HD 5750 512MB, which comes with a GPU core clock speed of 700 MHz, and 512 MB of GDDR5 memory set to run at 1150 MHz through a 128-bit bus. It also features 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 512MB		86 Watts
GeForce 9800 GX2		197 Watts
	Difference: 111 Watts (129%)

Memory Bandwidth

In theory, the GeForce 9800 GX2 should be a lot faster than the Radeon HD 5750 512MB overall. (explain)

GeForce 9800 GX2		128000 MB/sec
Radeon HD 5750 512MB		73600 MB/sec
	Difference: 54400 (74%)

Texel Rate

The GeForce 9800 GX2 will be quite a bit (approximately 205%) more effective at AF than the Radeon HD 5750 512MB. (explain)

GeForce 9800 GX2		76800 Mtexels/sec
Radeon HD 5750 512MB		25200 Mtexels/sec
	Difference: 51600 (205%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce 9800 GX2 is superior to the Radeon HD 5750 512MB, by far. (explain)

GeForce 9800 GX2		19200 Mpixels/sec
Radeon HD 5750 512MB		11200 Mpixels/sec
	Difference: 8000 (71%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the largest amount of data (in units of MB per second) that can be transported past the external memory interface in one second. The number is calculated by multiplying the interface width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory in one 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 filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.