GeForce GT 430 vs Radeon HD 5770

Intro

Compare those specifications to the Radeon HD 5770, which features a core clock frequency of 850 MHz and a GDDR5 memory frequency of 1200 MHz. It also uses a 128-bit bus, and uses a 40 nm design. It features 800(160x5) SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430		60 Watts
Radeon HD 5770		108 Watts
	Difference: 48 Watts (80%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5770 should be 167% faster than the GeForce GT 430 in general, because of its higher data rate. (explain)

Radeon HD 5770		76800 MB/sec
GeForce GT 430		28800 MB/sec
	Difference: 48000 (167%)

Texel Rate

The Radeon HD 5770 is a lot (about 204%) better at anisotropic filtering than the GeForce GT 430. (explain)

Radeon HD 5770		34000 Mtexels/sec
GeForce GT 430		11200 Mtexels/sec
	Difference: 22800 (204%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon HD 5770 is the winner, by a large margin. (explain)

Radeon HD 5770		13600 Mpixels/sec
GeForce GT 430		2800 Mpixels/sec
	Difference: 10800 (386%)

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 (counted in MB per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the bus width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the video card will be at 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 graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount 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 fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.