GeForce GT 450 (OEM) vs GeForce GTX 480

Intro

Compare that to the GeForce GTX 480, which features clock speeds of 700 MHz on the GPU, and 924 MHz on the 1536 MB of GDDR5 memory. It features 480 SPUs along with 60 TAUs and 48 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM)		106 Watts
GeForce GTX 480		250 Watts
	Difference: 144 Watts (136%)

Memory Bandwidth

Performance-wise, the GeForce GTX 480 should theoretically be a lot superior to the GeForce GT 450 (OEM) overall. (explain)

GeForce GTX 480		177408 MB/sec
GeForce GT 450 (OEM)		96000 MB/sec
	Difference: 81408 (85%)

Texel Rate

The GeForce GTX 480 will be quite a bit (more or less 122%) faster with regards to texture filtering than the GeForce GT 450 (OEM). (explain)

GeForce GTX 480		42000 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 23040 (122%)

Pixel Rate

The GeForce GTX 480 is a lot (approximately 77%) more effective at FSAA than the GeForce GT 450 (OEM), and also will be capable of handling higher resolutions without losing too much performance. (explain)

GeForce GTX 480		33600 Mpixels/sec
GeForce GT 450 (OEM)		18960 Mpixels/sec
	Difference: 14640 (77%)

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 maximum amount of information (counted in MB per second) that can be transported across the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the card will be at 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 the video card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.