GeForce 8800 GT 512MB vs GeForce GT 430

Intro

Compare all that to the GeForce GT 430, which has a core clock speed of 700 MHz and a GDDR3 memory speed of 900 MHz. It also makes use of a 128-bit memory bus, and uses a 40 nm design. It is comprised of 96 SPUs, 16 TAUs, and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430		60 Watts
GeForce 8800 GT 512MB		105 Watts
	Difference: 45 Watts (75%)

Memory Bandwidth

The GeForce 8800 GT 512MB, in theory, should perform quite a bit faster than the GeForce GT 430 overall. (explain)

GeForce 8800 GT 512MB		57600 MB/sec
GeForce GT 430		28800 MB/sec
	Difference: 28800 (100%)

Texel Rate

The GeForce 8800 GT 512MB is much (approximately 200%) faster with regards to texture filtering than the GeForce GT 430. (explain)

GeForce 8800 GT 512MB		33600 Mtexels/sec
GeForce GT 430		11200 Mtexels/sec
	Difference: 22400 (200%)

Pixel Rate

The GeForce 8800 GT 512MB is much (about 243%) better at anti-aliasing than the GeForce GT 430, and also should be able to handle higher resolutions better. (explain)

GeForce 8800 GT 512MB		9600 Mpixels/sec
GeForce GT 430		2800 Mpixels/sec
	Difference: 6800 (243%)

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 (in units of megabytes per second) that can be transferred across the external memory interface within a second. It's worked out by multiplying the bus width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, 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 amount of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total number of texture units by the core clock 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 in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.