Geforce GTX 780 vs Radeon RX 6650 XT

Intro

Compare all that to the Radeon RX 6650 XT, which features a core clock frequency of 2055 MHz and a GDDR6 memory frequency of 2190 MHz. It also makes use of a 128-bit bus, and uses a 7 nm design. It is comprised of 2048 SPUs, 128 Texture Address Units, and 64 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6650 XT		176 Watts
Geforce GTX 780		250 Watts
	Difference: 74 Watts (42%)

Memory Bandwidth

Theoretically, the Geforce GTX 780 should be a little bit faster than the Radeon RX 6650 XT overall. (explain)

Geforce GTX 780		288384 MB/sec
Radeon RX 6650 XT		287072 MB/sec
	Difference: 1312 (0%)

Texel Rate

The Radeon RX 6650 XT will be a lot (more or less 59%) more effective at texture filtering than the Geforce GTX 780. (explain)

Radeon RX 6650 XT		263040 Mtexels/sec
Geforce GTX 780		165696 Mtexels/sec
	Difference: 97344 (59%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon RX 6650 XT is superior to the Geforce GTX 780, by a large margin. (explain)

Radeon RX 6650 XT		131520 Mpixels/sec
Geforce GTX 780		41424 Mpixels/sec
	Difference: 90096 (217%)

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 largest amount of data (measured in MB per second) that can be moved over the external memory interface in one second. It is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR 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, HDR and higher screen 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 of the card 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 applied per second.

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