GeForce GT 320 vs Radeon HD 5750 1GB

Intro

Compare those specs to the Radeon HD 5750 1GB, which features a clock speed of 700 MHz and a GDDR5 memory speed of 1150 MHz. It also makes use of a 128-bit memory bus, and makes use of a 40 nm design. It is comprised of 720(144x5) SPUs, 36 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
Radeon HD 5750 1GB		86 Watts
	Difference: 43 Watts (100%)

Memory Bandwidth

As far as performance goes, the Radeon HD 5750 1GB should theoretically be quite a bit better than the GeForce GT 320 in general. (explain)

Radeon HD 5750 1GB		73600 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 48320 (191%)

Texel Rate

The Radeon HD 5750 1GB should be a lot (approximately 94%) more effective at texture filtering than the GeForce GT 320. (explain)

Radeon HD 5750 1GB		25200 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 12240 (94%)

Pixel Rate

The Radeon HD 5750 1GB will be quite a bit (about 159%) faster with regards to anti-aliasing than the GeForce GT 320, and should be capable of handling higher screen resolutions better. (explain)

Radeon HD 5750 1GB		11200 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 6880 (159%)

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 data (in units of megabytes per second) that can be transferred across the external memory interface in one second. It's worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs 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, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.