GeForce 9800 GX2 vs Radeon HD 5750 1GB

Intro

Compare all that to the Radeon HD 5750 1GB, which has GPU clock speed of 700 MHz, and 1024 MB of GDDR5 RAM set to run at 1150 MHz through a 128-bit bus. It also features 720(144x5) Stream Processors, 36 Texture Address Units, 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 GX2		197 Watts
	Difference: 111 Watts (129%)

Memory Bandwidth

The GeForce 9800 GX2 should in theory be much faster than the Radeon HD 5750 1GB in general. (explain)

GeForce 9800 GX2		128000 MB/sec
Radeon HD 5750 1GB		73600 MB/sec
	Difference: 54400 (74%)

Texel Rate

The GeForce 9800 GX2 should be quite a bit (about 205%) more effective at AF than the Radeon HD 5750 1GB. (explain)

GeForce 9800 GX2		76800 Mtexels/sec
Radeon HD 5750 1GB		25200 Mtexels/sec
	Difference: 51600 (205%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce 9800 GX2 is the winner, by a large margin. (explain)

GeForce 9800 GX2		19200 Mpixels/sec
Radeon HD 5750 1GB		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 moved across the external memory interface in a second. The number is worked out by multiplying the bus width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total texture units by the core speed of the chip. The higher this number, the better the card will be at 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 that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number 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 also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.