GeForce GT 320 vs GeForce GTX 660

Intro

Compare all that to the GeForce GTX 660, which comes with a clock frequency of 980 MHz and a GDDR5 memory frequency of 1502 MHz. It also features a 192-bit bus, and makes use of a 28 nm design. It is comprised of 960 SPUs, 80 Texture Address Units, and 24 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
GeForce GTX 660		140 Watts
	Difference: 97 Watts (226%)

Memory Bandwidth

Theoretically, the GeForce GTX 660 should be quite a bit faster than the GeForce GT 320 in general. (explain)

GeForce GTX 660		144192 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 118912 (470%)

Texel Rate

The GeForce GTX 660 will be much (approximately 505%) more effective at anisotropic filtering than the GeForce GT 320. (explain)

GeForce GTX 660		78400 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 65440 (505%)

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 320		4320 Mpixels/sec
	Difference: 19200 (444%)

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 moved past the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the card's clock speed. 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 rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.