GeForce GT 430 1GB vs Radeon HD 6770

Intro

Compare those specs to the Radeon HD 6770, which uses a 40 nm design. AMD has clocked the core speed at 900 MHz. The GDDR5 RAM runs at a speed of 1050 MHz on this specific model. It features 800 SPUs along with 40 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 1GB		60 Watts
Radeon HD 6770		108 Watts
	Difference: 48 Watts (80%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6770 should in theory be quite a bit superior to the GeForce GT 430 1GB overall. (explain)

Radeon HD 6770		67200 MB/sec
GeForce GT 430 1GB		28800 MB/sec
	Difference: 38400 (133%)

Texel Rate

The Radeon HD 6770 will be a lot (approximately 221%) better at AF than the GeForce GT 430 1GB. (explain)

Radeon HD 6770		36000 Mtexels/sec
GeForce GT 430 1GB		11200 Mtexels/sec
	Difference: 24800 (221%)

Pixel Rate

The Radeon HD 6770 should be much (approximately 414%) better at anti-aliasing than the GeForce GT 430 1GB, and also will be able to handle higher screen resolutions while still performing well. (explain)

Radeon HD 6770		14400 Mpixels/sec
GeForce GT 430 1GB		2800 Mpixels/sec
	Difference: 11600 (414%)

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 maximum amount of data (counted in MB per second) that can be transferred across the external memory interface in a second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units 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 output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.