GeForce GT 450 (OEM) vs GeForce GTX 570

Intro

Compare those specifications to the GeForce GTX 570, which has clock speeds of 732 MHz on the GPU, and 950 MHz on the 1280 MB of GDDR5 RAM. It features 480 SPUs as well as 60 TAUs and 40 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM)		106 Watts
GeForce GTX 570		219 Watts
	Difference: 113 Watts (107%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 570 should be 58% quicker than the GeForce GT 450 (OEM) overall, due to its higher data rate. (explain)

GeForce GTX 570		152000 MB/sec
GeForce GT 450 (OEM)		96000 MB/sec
	Difference: 56000 (58%)

Texel Rate

The GeForce GTX 570 will be quite a bit (about 132%) faster with regards to anisotropic filtering than the GeForce GT 450 (OEM). (explain)

GeForce GTX 570		43920 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 24960 (132%)

Pixel Rate

The GeForce GTX 570 is quite a bit (more or less 54%) faster with regards to anti-aliasing than the GeForce GT 450 (OEM), and also should be able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 570		29280 Mpixels/sec
GeForce GT 450 (OEM)		18960 Mpixels/sec
	Difference: 10320 (54%)

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 data (in units of 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 speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the card's clock speed. 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, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.