GeForce GT 130 vs GeForce GTX 650

Intro

Compare those specs to the GeForce GTX 650, which comes with GPU clock speed of 1058 MHz, and 1024 MB of GDDR5 RAM running at 1250 MHz through a 128-bit bus. It also is made up of 384 SPUs, 32 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
GeForce GT 130		75 Watts
	Difference: 11 Watts (17%)

Memory Bandwidth

In theory, the GeForce GTX 650 will be 567% faster than the GeForce GT 130 overall, due to its greater data rate. (explain)

GeForce GTX 650		80000 MB/sec
GeForce GT 130		12000 MB/sec
	Difference: 68000 (567%)

Texel Rate

The GeForce GTX 650 will be much (more or less 182%) faster with regards to AF than the GeForce GT 130. (explain)

GeForce GTX 650		33856 Mtexels/sec
GeForce GT 130		12000 Mtexels/sec
	Difference: 21856 (182%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 650 is superior to the GeForce GT 130, by a large margin. (explain)

GeForce GTX 650		16928 Mpixels/sec
GeForce GT 130		8000 Mpixels/sec
	Difference: 8928 (112%)

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 max amount of data (measured in megabytes per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the video 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 amount of pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The number 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 outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.