GeForce GT 320 vs Radeon HD 6750

Intro

Compare those specs to the Radeon HD 6750, which makes use of a 40 nm design. AMD has set the core frequency at 725 MHz. The GDDR5 memory works at a frequency of 1000 MHz on this particular model. 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

Theoretically speaking, the Radeon HD 6750 is 153% faster than the GeForce GT 320 overall, because of its greater 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 quite a bit (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

The Radeon HD 6750 should be a lot (about 169%) better at anti-aliasing than the GeForce GT 320, and also will be capable of handling higher resolutions without slowing down too much. (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 max amount of information (counted in MB per second) that can be moved over the external memory interface within a second. The number is calculated by multiplying the interface width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.