GeForce GT 130 vs GeForce GTX 550 Ti

Intro

Compare those specs to the GeForce GTX 550 Ti, which has a core clock frequency of 900 MHz and a GDDR5 memory speed of 1026 MHz. It also uses a 192-bit bus, and uses a 40 nm design. It is made up of 192 SPUs, 32 Texture Address Units, and 24 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 130		75 Watts
GeForce GTX 550 Ti		116 Watts
	Difference: 41 Watts (55%)

Memory Bandwidth

In theory, the GeForce GTX 550 Ti should be 721% faster than the GeForce GT 130 overall, due to its higher bandwidth. (explain)

GeForce GTX 550 Ti		98496 MB/sec
GeForce GT 130		12000 MB/sec
	Difference: 86496 (721%)

Texel Rate

The GeForce GTX 550 Ti should be a lot (about 140%) more effective at anisotropic filtering than the GeForce GT 130. (explain)

GeForce GTX 550 Ti		28800 Mtexels/sec
GeForce GT 130		12000 Mtexels/sec
	Difference: 16800 (140%)

Pixel Rate

The GeForce GTX 550 Ti will be much (about 170%) more effective at full screen anti-aliasing than the GeForce GT 130, and also will be capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 550 Ti		21600 Mpixels/sec
GeForce GT 130		8000 Mpixels/sec
	Difference: 13600 (170%)

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 (counted in MB per second) that can be transported over the external memory interface in a second. The number is calculated by multiplying the bus width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 once 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 AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs 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 output rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.