GeForce GT 450 (OEM) vs GeForce GTX 660

Intro

Compare those specifications to the GeForce GTX 660, which has core clock speeds of 980 MHz on the GPU, and 1502 MHz on the 2048 MB of GDDR5 memory. It features 960 SPUs as well as 80 TAUs and 24 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM)		106 Watts
GeForce GTX 660		140 Watts
	Difference: 34 Watts (32%)

Memory Bandwidth

In theory, the GeForce GTX 660 should be a lot faster than the GeForce GT 450 (OEM) overall. (explain)

GeForce GTX 660		144192 MB/sec
GeForce GT 450 (OEM)		96000 MB/sec
	Difference: 48192 (50%)

Texel Rate

The GeForce GTX 660 should be quite a bit (more or less 314%) more effective at anisotropic filtering than the GeForce GT 450 (OEM). (explain)

GeForce GTX 660		78400 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 59440 (314%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 660 is the winner, by far. (explain)

GeForce GTX 660		23520 Mpixels/sec
GeForce GT 450 (OEM)		18960 Mpixels/sec
	Difference: 4560 (24%)

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 largest amount of information (counted in MB per second) that can be moved over the external memory interface in one second. It's calculated by multiplying the bus width by the speed of its memory. In the case of DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's 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 can be processed in one second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.