GeForce GT 430 vs GeForce GTS 450

Intro

Compare that to the GeForce GTS 450, which features a clock speed of 783 MHz and a GDDR5 memory speed of 902 MHz. It also features a 128-bit memory bus, and uses a 40 nm design. It is comprised of 192 SPUs, 32 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430		60 Watts
GeForce GTS 450		106 Watts
	Difference: 46 Watts (77%)

Memory Bandwidth

In theory, the GeForce GTS 450 will be 100% faster than the GeForce GT 430 overall, due to its greater data rate. (explain)

GeForce GTS 450		57728 MB/sec
GeForce GT 430		28800 MB/sec
	Difference: 28928 (100%)

Texel Rate

The GeForce GTS 450 will be a lot (more or less 124%) faster with regards to anisotropic filtering than the GeForce GT 430. (explain)

GeForce GTS 450		25056 Mtexels/sec
GeForce GT 430		11200 Mtexels/sec
	Difference: 13856 (124%)

Pixel Rate

The GeForce GTS 450 will be quite a bit (more or less 347%) better at anti-aliasing than the GeForce GT 430, and should be able to handle higher resolutions without slowing down too much. (explain)

GeForce GTS 450		12528 Mpixels/sec
GeForce GT 430		2800 Mpixels/sec
	Difference: 9728 (347%)

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 information (in units of megabytes per second) that can be moved across the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.