GeForce GTX 780 Ti vs Radeon RX 6650 XT

Intro

Compare all of that to the Radeon RX 6650 XT, which uses a 7 nm design. AMD has set the core frequency at 2055 MHz. The GDDR6 RAM runs at a speed of 2190 MHz on this card. It features 2048 SPUs as well as 128 Texture Address Units and 64 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

As far as performance goes, the GeForce GTX 780 Ti should theoretically be a bit better than the Radeon RX 6650 XT in general. (explain)

GeForce GTX 780 Ti		336000 MB/sec
Radeon RX 6650 XT		287072 MB/sec
	Difference: 48928 (17%)

Texel Rate

The Radeon RX 6650 XT will be quite a bit (about 25%) more effective at AF than the GeForce GTX 780 Ti. (explain)

Radeon RX 6650 XT		263040 Mtexels/sec
GeForce GTX 780 Ti		210000 Mtexels/sec
	Difference: 53040 (25%)

Pixel Rate

The Radeon RX 6650 XT should be quite a bit (about 213%) faster with regards to AA than the GeForce GTX 780 Ti, and will be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon RX 6650 XT		131520 Mpixels/sec
GeForce GTX 780 Ti		42000 Mpixels/sec
	Difference: 89520 (213%)

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 (in units of megabytes per second) that can be transported 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. If it uses DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total number of 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 maximum number of pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.