GeForce GT 320 vs Radeon HD 5450

Intro

Compare those specifications to the Radeon HD 5450, which comes with clock speeds of 650 MHz on the GPU, and 800 MHz on the 512 MB of DDR3 memory. It features 80(16x5) SPUs along with 8 Texture Address Units and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450		19 Watts
GeForce GT 320		43 Watts
	Difference: 24 Watts (126%)

Memory Bandwidth

As far as performance goes, the GeForce GT 320 should theoretically be a lot better than the Radeon HD 5450 in general. (explain)

GeForce GT 320		25280 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 12480 (98%)

Texel Rate

The GeForce GT 320 will be much (about 149%) faster with regards to AF than the Radeon HD 5450. (explain)

GeForce GT 320		12960 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 7760 (149%)

Pixel Rate

The GeForce GT 320 will be quite a bit (approximately 66%) more effective at AA than the Radeon HD 5450, and will be capable of handling higher screen resolutions while still performing well. (explain)

GeForce GT 320		4320 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 1720 (66%)

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 MB per second) that can be transferred across the external memory interface in a second. It's worked out by multiplying the bus width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total number of texture units by the core clock 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.