GeForce GT 420 vs Radeon HD 4350

Intro

Compare those specifications to the Radeon HD 4350, which features clock speeds of 575 MHz on the GPU, and 500 MHz on the 512 MB of DDR2 memory. It features 80(16x5) SPUs along with 8 TAUs and 4 ROPs.

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 speaking, the GeForce GT 420 will be 260% quicker than the Radeon HD 4350 overall, because of its greater data rate. (explain)

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

Texel Rate

The GeForce GT 420 will be much (more or less 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 should be a lot (more or less 22%) more effective at full screen anti-aliasing than the Radeon HD 4350, and will be able to handle higher resolutions while still performing well. (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: Bandwidth is the maximum amount of data (measured in MB per second) that can be transported past the external memory interface in one second. The number is worked out by multiplying the bus width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.