GeForce GT 130 vs GeForce GTS 450

Intro

Compare all of that to the GeForce GTS 450, which uses a 40 nm design. nVidia has set the core speed at 783 MHz. The GDDR5 memory is set to run at a frequency of 902 MHz on this particular model. It features 192 SPUs as well as 32 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 130		75 Watts
GeForce GTS 450		106 Watts
	Difference: 31 Watts (41%)

Memory Bandwidth

The GeForce GTS 450, in theory, should be quite a bit faster than the GeForce GT 130 in general. (explain)

GeForce GTS 450		57728 MB/sec
GeForce GT 130		12000 MB/sec
	Difference: 45728 (381%)

Texel Rate

The GeForce GTS 450 should be much (more or less 109%) better at texture filtering than the GeForce GT 130. (explain)

GeForce GTS 450		25056 Mtexels/sec
GeForce GT 130		12000 Mtexels/sec
	Difference: 13056 (109%)

Pixel Rate

The GeForce GTS 450 will be quite a bit (approximately 57%) more effective at AA than the GeForce GT 130, and should be capable of handling higher screen resolutions more effectively. (explain)

GeForce GTS 450		12528 Mpixels/sec
GeForce GT 130		8000 Mpixels/sec
	Difference: 4528 (57%)

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 max amount of data (in units of megabytes per second) that can be transferred past the external memory interface within a second. It is worked out by multiplying the interface width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 applied in one second. This is calculated by multiplying the total amount of texture units 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 in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number 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 filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.