GeForce 8500 GT vs GeForce GTX 660 Ti

Intro

Compare all of that to the GeForce GTX 660 Ti, which makes use of a 28 nm design. nVidia has clocked the core speed at 915 MHz. The GDDR5 memory works at a frequency of 1500 MHz on this particular model. It features 1344 SPUs along with 112 TAUs and 24 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8500 GT		45 Watts
GeForce GTX 660 Ti		150 Watts
	Difference: 105 Watts (233%)

Memory Bandwidth

In theory, the GeForce GTX 660 Ti should be much faster than the GeForce 8500 GT in general. (explain)

GeForce GTX 660 Ti		144000 MB/sec
GeForce 8500 GT		12800 MB/sec
	Difference: 131200 (1025%)

Texel Rate

The GeForce GTX 660 Ti is a lot (more or less 2747%) better at anisotropic filtering than the GeForce 8500 GT. (explain)

GeForce GTX 660 Ti		102480 Mtexels/sec
GeForce 8500 GT		3600 Mtexels/sec
	Difference: 98880 (2747%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 660 Ti is superior to the GeForce 8500 GT, by far. (explain)

GeForce GTX 660 Ti		21960 Mpixels/sec
GeForce 8500 GT		1800 Mpixels/sec
	Difference: 20160 (1120%)

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 largest amount of data (in units of MB per second) that can be transported over the external memory interface in a second. It is calculated by multiplying the interface width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per 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. Pixel rate is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.