GeForce GT 320 vs Radeon HD 7750

Intro

Compare all of that to the Radeon HD 7750, which comes with a clock frequency of 800 MHz and a GDDR5 memory frequency of 1125 MHz. It also features a 128-bit bus, and makes use of a 28 nm design. It is made up of 512 SPUs, 32 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
Radeon HD 7750		55 Watts
	Difference: 12 Watts (28%)

Memory Bandwidth

As far as performance goes, the Radeon HD 7750 should in theory be a lot better than the GeForce GT 320 in general. (explain)

Radeon HD 7750		72000 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 46720 (185%)

Texel Rate

The Radeon HD 7750 will be quite a bit (about 98%) better at AF than the GeForce GT 320. (explain)

Radeon HD 7750		25600 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 12640 (98%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 7750 is the winner, by far. (explain)

Radeon HD 7750		12800 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 8480 (196%)

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 moved over the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total texture units of the card by the core 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.