GeForce GTS 450 1GB vs GeForce GTX 660

Intro

Compare all of that to the GeForce GTX 660, which features core clock 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 GTS 450 1GB		106 Watts
GeForce GTX 660		140 Watts
	Difference: 34 Watts (32%)

Memory Bandwidth

In theory, the GeForce GTX 660 will be 150% quicker than the GeForce GTS 450 1GB overall, due to its higher data rate. (explain)

GeForce GTX 660		144192 MB/sec
GeForce GTS 450 1GB		57728 MB/sec
	Difference: 86464 (150%)

Texel Rate

The GeForce GTX 660 will be much (approximately 213%) faster with regards to texture filtering than the GeForce GTS 450 1GB. (explain)

GeForce GTX 660		78400 Mtexels/sec
GeForce GTS 450 1GB		25056 Mtexels/sec
	Difference: 53344 (213%)

Pixel Rate

The GeForce GTX 660 should be much (about 88%) better at AA than the GeForce GTS 450 1GB, and will be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 660		23520 Mpixels/sec
GeForce GTS 450 1GB		12528 Mpixels/sec
	Difference: 10992 (88%)

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 (counted in MB per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the interface width by its memory clock speed. In the case of 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 AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total texture units of the card by the core clock 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 in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.