Radeon R9 280X vs Radeon RX 6650 XT

Intro

Compare all of that to the Radeon RX 6650 XT, which has core speeds of 2055 MHz on the GPU, and 2190 MHz on the 8192 MB of GDDR6 RAM. It features 2048 SPUs along with 128 Texture Address Units 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 280X		250 Watts
	Difference: 74 Watts (42%)

Memory Bandwidth

The Radeon R9 280X, in theory, should be a bit faster than the Radeon RX 6650 XT overall. (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 a lot (more or less 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 should be quite a bit (approximately 384%) better at AA than the Radeon R9 280X, and able to handle higher resolutions without slowing down too much. (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: Bandwidth is the maximum amount of data (counted in MB per second) that can be transferred over the external memory interface in a second. The number is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This is worked out by multiplying the total texture units by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.