GeForce GT 320 vs Radeon HD 6750

Intro

Compare those specs to the Radeon HD 6750, which uses a 40 nm design. AMD has set the core frequency at 725 MHz. The GDDR5 memory works at a speed of 1000 MHz on this particular card. It features 720 SPUs as well as 36 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
Radeon HD 6750		86 Watts
	Difference: 43 Watts (100%)

Memory Bandwidth

In theory, the Radeon HD 6750 should be 153% faster than the GeForce GT 320 overall, because of its higher data rate. (explain)

Radeon HD 6750		64000 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 38720 (153%)

Texel Rate

The Radeon HD 6750 should be a lot (more or less 101%) better at texture filtering than the GeForce GT 320. (explain)

Radeon HD 6750		26100 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 13140 (101%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 6750 is the winner, and very much so. (explain)

Radeon HD 6750		11600 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 7280 (169%)

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 maximum amount of information (in units of megabytes per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines 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 many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.