Geforce GTX 780 vs Radeon RX 6900 XT

Intro

Compare those specs to the Radeon RX 6900 XT, which has a core clock frequency of 1825 MHz and a GDDR6 memory frequency of 2000 MHz. It also features a 256-bit bus, and makes use of a 7 nm design. It is comprised of 5120 SPUs, 320 Texture Address Units, and 128 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 780		250 Watts
Radeon RX 6900 XT		300 Watts
	Difference: 50 Watts (20%)

Memory Bandwidth

The Radeon RX 6900 XT, in theory, should perform a lot faster than the Geforce GTX 780 overall. (explain)

Radeon RX 6900 XT		524288 MB/sec
Geforce GTX 780		288384 MB/sec
	Difference: 235904 (82%)

Texel Rate

The Radeon RX 6900 XT should be much (approximately 252%) more effective at AF than the Geforce GTX 780. (explain)

Radeon RX 6900 XT		584000 Mtexels/sec
Geforce GTX 780		165696 Mtexels/sec
	Difference: 418304 (252%)

Pixel Rate

The Radeon RX 6900 XT is a lot (more or less 464%) faster with regards to full screen anti-aliasing than the Geforce GTX 780, and should be able to handle higher resolutions without losing too much performance. (explain)

Radeon RX 6900 XT		233600 Mpixels/sec
Geforce GTX 780		41424 Mpixels/sec
	Difference: 192176 (464%)

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 information (measured in MB per second) that can be moved past the external memory interface within a second. It is calculated by multiplying the interface width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. 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 higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.