GeForce GT 130 vs GeForce GTX 480

Intro

Compare those specifications to the GeForce GTX 480, which comes with a core clock speed of 700 MHz and a GDDR5 memory speed of 924 MHz. It also makes use of a 384-bit bus, and uses a 40 nm design. It is made up of 480 SPUs, 60 Texture Address Units, and 48 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 130		75 Watts
GeForce GTX 480		250 Watts
	Difference: 175 Watts (233%)

Memory Bandwidth

Performance-wise, the GeForce GTX 480 should in theory be a lot superior to the GeForce GT 130 in general. (explain)

GeForce GTX 480		177408 MB/sec
GeForce GT 130		12000 MB/sec
	Difference: 165408 (1378%)

Texel Rate

The GeForce GTX 480 will be a lot (approximately 250%) better at AF than the GeForce GT 130. (explain)

GeForce GTX 480		42000 Mtexels/sec
GeForce GT 130		12000 Mtexels/sec
	Difference: 30000 (250%)

Pixel Rate

The GeForce GTX 480 is a lot (approximately 320%) better at full screen anti-aliasing than the GeForce GT 130, and also should be capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 480		33600 Mpixels/sec
GeForce GT 130		8000 Mpixels/sec
	Difference: 25600 (320%)

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 maximum amount of information (counted in MB per second) that can be moved across the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed 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 a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.