GeForce GT 450 (OEM) vs GeForce GTX 480

Intro

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

Theoretically speaking, the GeForce GTX 480 will be 85% quicker than the GeForce GT 450 (OEM) in general, due to its higher bandwidth. (explain)

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

Texel Rate

The GeForce GTX 480 is quite a bit (more or less 122%) faster with regards to anisotropic 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 should be quite a bit (approximately 77%) better at full screen anti-aliasing than the GeForce GT 450 (OEM), and also should be able to handle higher resolutions better. (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: Memory bandwidth is the max amount of information (counted in megabytes per second) that can be transported over the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied 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 higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its 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 drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.