GeForce GT 430 vs Radeon HD 4770

Intro

Compare all of that to the Radeon HD 4770, which features core clock speeds of 750 MHz on the GPU, and 800 MHz on the 512 MB of GDDR5 RAM. It features 640(128x5) SPUs along with 32 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430		60 Watts
Radeon HD 4770		80 Watts
	Difference: 20 Watts (33%)

Memory Bandwidth

As far as performance goes, the Radeon HD 4770 should in theory be a lot superior to the GeForce GT 430 in general. (explain)

Radeon HD 4770		51200 MB/sec
GeForce GT 430		28800 MB/sec
	Difference: 22400 (78%)

Texel Rate

The Radeon HD 4770 will be much (approximately 114%) more effective at AF than the GeForce GT 430. (explain)

Radeon HD 4770		24000 Mtexels/sec
GeForce GT 430		11200 Mtexels/sec
	Difference: 12800 (114%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 4770 is superior to the GeForce GT 430, by far. (explain)

Radeon HD 4770		12000 Mpixels/sec
GeForce GT 430		2800 Mpixels/sec
	Difference: 9200 (329%)

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 information (in units of megabytes per second) that can be transferred over the external memory interface within a second. The number is calculated by multiplying the bus width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 can be processed per second. This number is worked out by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.