GeForce GTX 1080 vs Radeon RX 6650 XT

Intro

Compare those specs to the Radeon RX 6650 XT, which has GPU clock speed of 2055 MHz, and 8192 MB of GDDR6 memory set to run at 2190 MHz through a 128-bit bus. It also features 2048 Stream Processors, 128 TAUs, and 64 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6650 XT		176 Watts
GeForce GTX 1080		180 Watts
	Difference: 4 Watts (2%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 1080 should be 14% faster than the Radeon RX 6650 XT in general, due to its higher bandwidth. (explain)

GeForce GTX 1080		327680 MB/sec
Radeon RX 6650 XT		287072 MB/sec
	Difference: 40608 (14%)

Texel Rate

The Radeon RX 6650 XT should be a small bit (about 2%) faster with regards to anisotropic filtering than the GeForce GTX 1080. (explain)

Radeon RX 6650 XT		263040 Mtexels/sec
GeForce GTX 1080		257120 Mtexels/sec
	Difference: 5920 (2%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon RX 6650 XT is the winner, by far. (explain)

Radeon RX 6650 XT		131520 Mpixels/sec
GeForce GTX 1080		102848 Mpixels/sec
	Difference: 28672 (28%)

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 maximum amount of information (measured in MB per second) that can be moved past the external memory interface within a second. It's calculated by multiplying the bus width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.