Radeon R9 280X vs Radeon RX 6650 XT

Intro

Compare those specifications to the Radeon RX 6650 XT, which has GPU core speed of 2055 MHz, and 8192 MB of GDDR6 RAM set to run at 2190 MHz through a 128-bit bus. It also is made up of 2048 Stream Processors, 128 Texture Address Units, and 64 ROPs.

Display Graphs

Hide Graphs

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

Theoretically speaking, the Radeon R9 280X should perform a small 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 is a lot (about 142%) more effective 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

If running with lots of anti-aliasing is important to you, then the Radeon RX 6650 XT is superior to the Radeon R9 280X, by a large margin. (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 information (measured in MB per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the bus width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the graphics 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 maximum amount of pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.