Radeon R9 285 vs Radeon RX 6650 XT

Intro

Compare those specs to the Radeon RX 6650 XT, which uses a 7 nm design. AMD has set the core frequency at 2055 MHz. The GDDR6 memory works at a frequency of 2190 MHz on this specific model. It features 2048 SPUs along with 128 TAUs and 64 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6650 XT		176 Watts
Radeon R9 285		190 Watts
	Difference: 14 Watts (8%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 6650 XT will be 63% quicker than the Radeon R9 285 overall, because of its greater data rate. (explain)

Radeon RX 6650 XT		287072 MB/sec
Radeon R9 285		176000 MB/sec
	Difference: 111072 (63%)

Texel Rate

The Radeon RX 6650 XT should be much (more or less 156%) better at texture filtering than the Radeon R9 285. (explain)

Radeon RX 6650 XT		263040 Mtexels/sec
Radeon R9 285		102816 Mtexels/sec
	Difference: 160224 (156%)

Pixel Rate

The Radeon RX 6650 XT will be quite a bit (approximately 348%) better at AA than the Radeon R9 285, and should be able to handle higher screen resolutions better. (explain)

Radeon RX 6650 XT		131520 Mpixels/sec
Radeon R9 285		29376 Mpixels/sec
	Difference: 102144 (348%)

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 (counted in megabytes per second) that can be transported across the external memory interface in a second. It is calculated by multiplying the bus width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum 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 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 one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core 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, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.