GeForce GT 130 vs GeForce GTS 450

Intro

Compare all that to the GeForce GTS 450, which uses a 40 nm design. nVidia has set the core frequency at 783 MHz. The GDDR5 RAM works at a speed of 902 MHz on this specific model. It features 192 SPUs along with 32 Texture Address Units and 16 Rasterization Operator Units.

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

In theory, the GeForce GTS 450 will be 381% faster than the GeForce GT 130 overall, due to its greater bandwidth. (explain)

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

Texel Rate

The GeForce GTS 450 will be a lot (approximately 109%) better at anisotropic 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 is a lot (about 57%) faster with regards to anti-aliasing than the GeForce GT 130, and will be able to handle higher resolutions without slowing down too much. (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 largest amount of information (counted in MB per second) that can be moved past the external memory interface in a second. It's calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher 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 per second. This number is calculated by multiplying the total amount of texture units of the card by the core clock 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 applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. 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 rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.