GeForce GT 430 1GB vs Radeon HD 6770 1GB

Intro

Compare those specifications to the Radeon HD 6770 1GB, which features GPU clock speed of 900 MHz, and 1024 MB of GDDR5 RAM set to run at 1050 MHz through a 128-bit bus. It also is comprised of 800 Stream Processors, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Theoretically speaking, the Radeon HD 6770 1GB is 133% quicker than the GeForce GT 430 1GB in general, due to its higher data rate. (explain)

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

Texel Rate

The Radeon HD 6770 1GB is a lot (about 221%) better at anisotropic filtering than the GeForce GT 430 1GB. (explain)

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

Pixel Rate

The Radeon HD 6770 1GB is a lot (about 414%) faster with regards to full screen anti-aliasing than the GeForce GT 430 1GB, and should be able to handle higher resolutions without slowing down too much. (explain)

Radeon HD 6770 1GB		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: Bandwidth is the largest amount of information (measured in MB per second) that can be moved over the external memory interface within a second. It's worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the 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 number of texture map elements (texels) that are applied per second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core 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 rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.