GeForce GT 450 (OEM) vs GeForce GTX 660

Intro

Compare those specifications to the GeForce GTX 660, which features a clock speed of 980 MHz and a GDDR5 memory frequency of 1502 MHz. It also makes use of a 192-bit bus, and uses a 28 nm design. It is made up of 960 SPUs, 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 perform much 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 much (more or less 314%) more effective at 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

If using a high screen resolution is important to you, then the GeForce GTX 660 is the winner, and very much so. (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 maximum amount of data (measured in megabytes per second) that can be transported over the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.