GeForce GT 320 vs GeForce GT 430

Intro

Compare all that to the GeForce GT 430, which makes use of a 40 nm design. nVidia has clocked the core speed at 700 MHz. The GDDR3 RAM runs at a speed of 900 MHz on this model. It features 96 SPUs along with 16 TAUs and 4 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
GeForce GT 430		60 Watts
	Difference: 17 Watts (40%)

Memory Bandwidth

Theoretically speaking, the GeForce GT 430 should perform a little bit faster than the GeForce GT 320 in general. (explain)

GeForce GT 430		28800 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 3520 (14%)

Texel Rate

The GeForce GT 320 will be a little bit (approximately 16%) better at texture filtering than the GeForce GT 430. (explain)

GeForce GT 320		12960 Mtexels/sec
GeForce GT 430		11200 Mtexels/sec
	Difference: 1760 (16%)

Pixel Rate

The GeForce GT 320 should be a lot (more or less 54%) more effective at full screen anti-aliasing than the GeForce GT 430, and able to handle higher screen resolutions more effectively. (explain)

GeForce GT 320		4320 Mpixels/sec
GeForce GT 430		2800 Mpixels/sec
	Difference: 1520 (54%)

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 largest amount of data (in units of MB per second) that can be transferred over the external memory interface in one second. It's calculated by multiplying the interface width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can 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 core speed of the card. 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 quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.