GeForce GTX 275 vs GeForce RTX 2080

Intro

Compare all that to the GeForce RTX 2080, which features a core clock speed of 1515 MHz and a GDDR6 memory speed of 1750 MHz. It also uses a 256-bit memory bus, and uses a 12 nm design. It features 2944 SPUs, 184 TAUs, and 64 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 2080		215 Watts
GeForce GTX 275		219 Watts
	Difference: 4 Watts (2%)

Memory Bandwidth

The GeForce RTX 2080, in theory, should be quite a bit faster than the GeForce GTX 275 overall. (explain)

GeForce RTX 2080		458752 MB/sec
GeForce GTX 275		127008 MB/sec
	Difference: 331744 (261%)

Texel Rate

The GeForce RTX 2080 is quite a bit (more or less 450%) faster with regards to anisotropic filtering than the GeForce GTX 275. (explain)

GeForce RTX 2080		278760 Mtexels/sec
GeForce GTX 275		50640 Mtexels/sec
	Difference: 228120 (450%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce RTX 2080 is superior to the GeForce GTX 275, and very much so. (explain)

GeForce RTX 2080		96960 Mpixels/sec
GeForce GTX 275		17724 Mpixels/sec
	Difference: 79236 (447%)

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 max amount of information (measured in MB per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, 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 number of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.