GeForce GTX 660 vs Radeon RX 6650 XT

Intro

Compare all 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 frequency of 2190 MHz on this card. It features 2048 SPUs along with 128 Texture Address Units and 64 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660		140 Watts
Radeon RX 6650 XT		176 Watts
	Difference: 36 Watts (26%)

Memory Bandwidth

The Radeon RX 6650 XT should in theory be quite a bit faster than the GeForce GTX 660 overall. (explain)

Radeon RX 6650 XT		287072 MB/sec
GeForce GTX 660		144192 MB/sec
	Difference: 142880 (99%)

Texel Rate

The Radeon RX 6650 XT will be a lot (about 236%) better at anisotropic filtering than the GeForce GTX 660. (explain)

Radeon RX 6650 XT		263040 Mtexels/sec
GeForce GTX 660		78400 Mtexels/sec
	Difference: 184640 (236%)

Pixel Rate

The Radeon RX 6650 XT should be quite a bit (more or less 459%) better at anti-aliasing than the GeForce GTX 660, and should be able to handle higher resolutions better. (explain)

Radeon RX 6650 XT		131520 Mpixels/sec
GeForce GTX 660		23520 Mpixels/sec
	Difference: 108000 (459%)

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 max amount of information (measured in MB per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, 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 texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.