GeForce GT 420 vs Radeon HD 4350

Intro

Compare those specs to the Radeon HD 4350, which features clock speeds of 575 MHz on the GPU, and 500 MHz on the 512 MB of DDR2 RAM. It features 80(16x5) SPUs as well as 8 Texture Address Units and 4 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4350		22 Watts
GeForce GT 420		50 Watts
	Difference: 28 Watts (127%)

Memory Bandwidth

Theoretically, the GeForce GT 420 should be a lot faster than the Radeon HD 4350 in general. (explain)

GeForce GT 420		28800 MB/sec
Radeon HD 4350		8000 MB/sec
	Difference: 20800 (260%)

Texel Rate

The GeForce GT 420 should be much (about 22%) faster with regards to AF than the Radeon HD 4350. (explain)

GeForce GT 420		5600 Mtexels/sec
Radeon HD 4350		4600 Mtexels/sec
	Difference: 1000 (22%)

Pixel Rate

The GeForce GT 420 will be much (about 22%) better at AA than the Radeon HD 4350, and capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GT 420		2800 Mpixels/sec
Radeon HD 4350		2300 Mpixels/sec
	Difference: 500 (22%)

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 largest amount of information (in units of MB per second) that can be transported over the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster 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 texture map elements (texels) that are processed per second. This number 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 graphics 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 number of pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out 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 drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.