GeForce GT 450 (OEM) vs GeForce GTX 660

Intro

Compare those specs to the GeForce GTX 660, which comes with core speeds of 980 MHz on the GPU, and 1502 MHz on the 2048 MB of GDDR5 memory. It features 960 SPUs along with 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

Theoretically speaking, the GeForce GTX 660 will be 50% faster than the GeForce GT 450 (OEM) overall, because of its higher data rate. (explain)

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

Texel Rate

The GeForce GTX 660 is much (more or less 314%) faster with regards to texture 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

The GeForce GTX 660 should be a lot (more or less 24%) better at FSAA than the GeForce GT 450 (OEM), and also able to handle higher resolutions better. (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: Memory bandwidth is the max 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 bus width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, 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 figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The better this number, 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 most pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core 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 lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.