Geforce GTX 780 vs Radeon RX 6650 XT

Intro

Compare those specifications 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 frequency of 2190 MHz on this card. It features 2048 SPUs along with 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		250 Watts
	Difference: 74 Watts (42%)

Memory Bandwidth

The Geforce GTX 780 should in theory perform a small bit faster than the Radeon RX 6650 XT in general. (explain)

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

Texel Rate

The Radeon RX 6650 XT should be a lot (more or less 59%) faster with regards to 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

The Radeon RX 6650 XT will be quite a bit (more or less 217%) more effective at AA than the Geforce GTX 780, and should be able to handle higher screen resolutions more effectively. (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: Memory bandwidth is the largest amount of data (counted in MB per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 are processed per second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip 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 amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.