GeForce GTX 660 vs GeForce RTX 2080

Intro

Compare those specifications to the GeForce RTX 2080, which has GPU core speed of 1515 MHz, and 8192 MB of GDDR6 RAM running at 1750 MHz through a 256-bit bus. It also is made up of 2944 SPUs, 184 TAUs, and 64 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce RTX 2080		26155 points
GeForce GTX 660		5063 points
	Difference: 21092 (417%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660		140 Watts
GeForce RTX 2080		215 Watts
	Difference: 75 Watts (54%)

Memory Bandwidth

The GeForce RTX 2080 should in theory be quite a bit faster than the GeForce GTX 660 overall. (explain)

GeForce RTX 2080		458752 MB/sec
GeForce GTX 660		144192 MB/sec
	Difference: 314560 (218%)

Texel Rate

The GeForce RTX 2080 should be quite a bit (more or less 256%) faster with regards to AF than the GeForce GTX 660. (explain)

GeForce RTX 2080		278760 Mtexels/sec
GeForce GTX 660		78400 Mtexels/sec
	Difference: 200360 (256%)

Pixel Rate

The GeForce RTX 2080 will be a lot (more or less 312%) better at anti-aliasing than the GeForce GTX 660, and also capable of handling higher resolutions more effectively. (explain)

GeForce RTX 2080		96960 Mpixels/sec
GeForce GTX 660		23520 Mpixels/sec
	Difference: 73440 (312%)

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 (counted in MB per second) that can be moved past the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 once 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 anti-aliasing, 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 worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of 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 output rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.