GeForce GT 320 vs Radeon HD 6770

Intro

Compare those specs to the Radeon HD 6770, which has clock speeds of 900 MHz on the GPU, and 1050 MHz on the 512 MB of GDDR5 memory. It features 800 SPUs along with 40 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 6770		108 Watts
	Difference: 65 Watts (151%)

Memory Bandwidth

In theory, the Radeon HD 6770 should be quite a bit faster than the GeForce GT 320 overall. (explain)

Radeon HD 6770		67200 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 41920 (166%)

Texel Rate

The Radeon HD 6770 is quite a bit (approximately 178%) faster with regards to anisotropic filtering than the GeForce GT 320. (explain)

Radeon HD 6770		36000 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 23040 (178%)

Pixel Rate

The Radeon HD 6770 should be a lot (about 233%) more effective at AA than the GeForce GT 320, and capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon HD 6770		14400 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 10080 (233%)

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: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the interface width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This number 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 card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. 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 fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.