Geforce GTX 780 vs Radeon RX 6500 XT

Intro

Compare that to the Radeon RX 6500 XT, which makes use of a 6 nm design. AMD has clocked the core speed at 2200 MHz. The GDDR6 RAM runs at a frequency of 2250 MHz on this particular card. It features 1024 SPUs as well as 64 Texture Address Units and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6500 XT		107 Watts
Geforce GTX 780		250 Watts
	Difference: 143 Watts (134%)

Memory Bandwidth

Theoretically, the Geforce GTX 780 should perform quite a bit faster than the Radeon RX 6500 XT overall. (explain)

Geforce GTX 780		288384 MB/sec
Radeon RX 6500 XT		147456 MB/sec
	Difference: 140928 (96%)

Texel Rate

The Geforce GTX 780 should be a bit (more or less 18%) better at AF than the Radeon RX 6500 XT. (explain)

Geforce GTX 780		165696 Mtexels/sec
Radeon RX 6500 XT		140800 Mtexels/sec
	Difference: 24896 (18%)

Pixel Rate

The Radeon RX 6500 XT will be quite a bit (about 70%) faster with regards to full screen anti-aliasing than the Geforce GTX 780, and also should be able to handle higher screen resolutions more effectively. (explain)

Radeon RX 6500 XT		70400 Mpixels/sec
Geforce GTX 780		41424 Mpixels/sec
	Difference: 28976 (70%)

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 max amount of information (in units of megabytes per second) that can be transferred across the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high 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 texture units by the core speed of the chip. The better this number, the better the 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 most pixels the video card can possibly write to its local memory per 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 filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.