GeForce GT 320 vs Radeon HD 5450

Intro

Compare all that to the Radeon HD 5450, which features a clock frequency of 650 MHz and a DDR3 memory frequency of 800 MHz. It also features a 64-bit memory bus, and makes use of a 40 nm design. It features 80(16x5) SPUs, 8 Texture Address Units, and 4 ROPs.

Display Graphs

Hide Graphs

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

Theoretically speaking, the GeForce GT 320 is 98% faster than the Radeon HD 5450 in general, because of its greater bandwidth. (explain)

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

Texel Rate

The GeForce GT 320 will be quite a bit (about 149%) better at 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 is much (approximately 66%) better at FSAA than the Radeon HD 5450, and capable of handling higher resolutions without losing too much performance. (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 moved across the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR type 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, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount 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 clock speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines 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 also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.