GeForce GTX 660 vs Radeon RX 6650 XT

Intro

Compare those specs to the Radeon RX 6650 XT, which makes use of a 7 nm design. AMD has set the core frequency at 2055 MHz. The GDDR6 memory is set to run at a speed of 2190 MHz on this specific model. 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)

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

Memory Bandwidth

As far as performance goes, the Radeon RX 6650 XT should theoretically be a lot superior to 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 is quite a bit (approximately 236%) more effective at AF 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 is much (more or less 459%) better at full screen anti-aliasing than the GeForce GTX 660, and also capable of handling higher resolutions without slowing down too much. (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: Memory bandwidth is the max amount of information (in units of megabytes per second) that can be transported across the external memory interface in one second. The number is calculated by multiplying the bus width by its memory speed. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher 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 number of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total amount of texture units 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 a second.

Pixel Rate: Pixel rate is the maximum number 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 number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill 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 ability to reach the max fill rate.