GeForce GTX 660 vs GeForce RTX 3080 12 GB

Intro

Compare all of that to the GeForce RTX 3080 12 GB, which features GPU clock speed of 1260 MHz, and 12288 MB of GDDR6X memory running at 1188 MHz through a 384-bit bus. It also is made up of 8960 Stream Processors, 280 TAUs, and 112 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660		140 Watts
GeForce RTX 3080 12 GB		350 Watts
	Difference: 210 Watts (150%)

Memory Bandwidth

Theoretically speaking, the GeForce RTX 3080 12 GB should perform a lot faster than the GeForce GTX 660 overall. (explain)

GeForce RTX 3080 12 GB		934298 MB/sec
GeForce GTX 660		144192 MB/sec
	Difference: 790106 (548%)

Texel Rate

The GeForce RTX 3080 12 GB will be quite a bit (approximately 350%) better at anisotropic filtering than the GeForce GTX 660. (explain)

GeForce RTX 3080 12 GB		352800 Mtexels/sec
GeForce GTX 660		78400 Mtexels/sec
	Difference: 274400 (350%)

Pixel Rate

The GeForce RTX 3080 12 GB should be a lot (about 500%) faster with regards to full screen anti-aliasing than the GeForce GTX 660, and will be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce RTX 3080 12 GB		141120 Mpixels/sec
GeForce GTX 660		23520 Mpixels/sec
	Difference: 117600 (500%)

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 maximum amount of data (measured in megabytes per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the bus width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, 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 processed per second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core speed of the card. 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 many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.