GeForce GT 430 1GB vs GeForce GTS 450 1GB

Intro

Compare those specs to the GeForce GTS 450 1GB, which has GPU clock speed of 783 MHz, and 1024 MB of GDDR5 memory running at 902 MHz through a 128-bit bus. It also is made up of 192 Stream Processors, 32 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 1GB		60 Watts
GeForce GTS 450 1GB		106 Watts
	Difference: 46 Watts (77%)

Memory Bandwidth

Theoretically speaking, the GeForce GTS 450 1GB is 100% quicker than the GeForce GT 430 1GB in general, due to its higher bandwidth. (explain)

GeForce GTS 450 1GB		57728 MB/sec
GeForce GT 430 1GB		28800 MB/sec
	Difference: 28928 (100%)

Texel Rate

The GeForce GTS 450 1GB is a lot (more or less 124%) better at AF than the GeForce GT 430 1GB. (explain)

GeForce GTS 450 1GB		25056 Mtexels/sec
GeForce GT 430 1GB		11200 Mtexels/sec
	Difference: 13856 (124%)

Pixel Rate

The GeForce GTS 450 1GB should be quite a bit (about 347%) better at anti-aliasing than the GeForce GT 430 1GB, and also capable of handling higher resolutions better. (explain)

GeForce GTS 450 1GB		12528 Mpixels/sec
GeForce GT 430 1GB		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: Bandwidth is the largest amount of data (counted in MB per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 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 anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the clock 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 fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.