GeForce 9800 GX2 vs Radeon HD 5750 512MB

Intro

Compare all that to the Radeon HD 5750 512MB, which features GPU core speed of 700 MHz, and 512 MB of GDDR5 RAM set to run 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 512MB		86 Watts
GeForce 9800 GX2		197 Watts
	Difference: 111 Watts (129%)

Memory Bandwidth

The GeForce 9800 GX2 should in theory be much 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 much (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

The GeForce 9800 GX2 is much (approximately 71%) faster with regards to anti-aliasing than the Radeon HD 5750 512MB, and will be able to handle higher screen resolutions more effectively. (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 max amount of information (measured in MB per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the interface width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR 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 worked out by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the graphics card will be at handling 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 write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number 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 outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.