Radeon R9 280X vs Radeon RX 6650 XT

Intro

Compare those specifications to the Radeon RX 6650 XT, which features a clock frequency of 2055 MHz and a GDDR6 memory speed of 2190 MHz. It also makes use of a 128-bit memory bus, and makes use of a 7 nm design. It is comprised of 2048 SPUs, 128 TAUs, and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6650 XT		176 Watts
Radeon R9 280X		250 Watts
	Difference: 74 Watts (42%)

Memory Bandwidth

As far as performance goes, the Radeon R9 280X should in theory be a small bit better than the Radeon RX 6650 XT in general. (explain)

Radeon R9 280X		288000 MB/sec
Radeon RX 6650 XT		287072 MB/sec
	Difference: 928 (0%)

Texel Rate

The Radeon RX 6650 XT should be quite a bit (approximately 142%) better at AF than the Radeon R9 280X. (explain)

Radeon RX 6650 XT		263040 Mtexels/sec
Radeon R9 280X		108800 Mtexels/sec
	Difference: 154240 (142%)

Pixel Rate

The Radeon RX 6650 XT will be much (about 384%) more effective at AA than the Radeon R9 280X, and able to handle higher resolutions without losing too much performance. (explain)

Radeon RX 6650 XT		131520 Mpixels/sec
Radeon R9 280X		27200 Mpixels/sec
	Difference: 104320 (384%)

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 data (in units of megabytes per second) that can be transported past the external memory interface in one second. The number is calculated by multiplying the interface width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher 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 applied in one second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, 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 amount of pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.