GeForce GT 450 (OEM) vs GeForce GTX 580 3GB

Intro

Compare those specs to the GeForce GTX 580 3GB, which comes with GPU core speed of 772 MHz, and 3072 MB of GDDR5 memory set to run at 1002 MHz through a 384-bit bus. It also is comprised of 512 SPUs, 64 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 580 3GB		244 Watts
	Difference: 138 Watts (130%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 580 3GB should be 100% faster than the GeForce GT 450 (OEM) in general, due to its higher bandwidth. (explain)

GeForce GTX 580 3GB		192384 MB/sec
GeForce GT 450 (OEM)		96000 MB/sec
	Difference: 96384 (100%)

Texel Rate

The GeForce GTX 580 3GB is a lot (about 161%) faster with regards to AF than the GeForce GT 450 (OEM). (explain)

GeForce GTX 580 3GB		49408 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 30448 (161%)

Pixel Rate

The GeForce GTX 580 3GB will be much (more or less 95%) better 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 580 3GB		37056 Mpixels/sec
GeForce GT 450 (OEM)		18960 Mpixels/sec
	Difference: 18096 (95%)

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 information (in units of MB per second) that can be moved across the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher 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 number of texture map elements (texels) that are processed in one 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 this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. 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 rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.