Radeon R9 280 vs Radeon RX 6650 XT

Intro

Compare those specifications to the Radeon RX 6650 XT, which features a GPU core clock speed of 2055 MHz, and 8192 MB of GDDR6 RAM set to run at 2190 MHz through a 128-bit bus. It also features 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 280		250 Watts
	Difference: 74 Watts (42%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 6650 XT is 20% faster than the Radeon R9 280 overall, due to its greater bandwidth. (explain)

Radeon RX 6650 XT		287072 MB/sec
Radeon R9 280		240000 MB/sec
	Difference: 47072 (20%)

Texel Rate

The Radeon RX 6650 XT will be quite a bit (approximately 152%) more effective at anisotropic filtering than the Radeon R9 280. (explain)

Radeon RX 6650 XT		263040 Mtexels/sec
Radeon R9 280		104496 Mtexels/sec
	Difference: 158544 (152%)

Pixel Rate

The Radeon RX 6650 XT should be quite a bit (approximately 341%) faster with regards to anti-aliasing than the Radeon R9 280, and will be able to handle higher resolutions without losing too much performance. (explain)

Radeon RX 6650 XT		131520 Mpixels/sec
Radeon R9 280		29856 Mpixels/sec
	Difference: 101664 (341%)

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 maximum amount of information (measured in MB per second) that can be transferred past the external memory interface in one second. The number is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better 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 amount of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total number of texture units by the core 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 per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.