Radeon R9 280X vs Radeon RX 6600 XT

Intro

Compare those specifications to the Radeon RX 6600 XT, which has a clock speed of 1968 MHz and a GDDR6 memory frequency of 2000 MHz. It also makes use of a 128-bit bus, and makes use of a 7 nm design. It is comprised of 2048 SPUs, 128 Texture Address Units, and 64 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600 XT		160 Watts
Radeon R9 280X		250 Watts
	Difference: 90 Watts (56%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 280X will be 10% faster than the Radeon RX 6600 XT in general, because of its greater data rate. (explain)

Radeon R9 280X		288000 MB/sec
Radeon RX 6600 XT		262144 MB/sec
	Difference: 25856 (10%)

Texel Rate

The Radeon RX 6600 XT will be quite a bit (approximately 132%) more effective at texture filtering than the Radeon R9 280X. (explain)

Radeon RX 6600 XT		251904 Mtexels/sec
Radeon R9 280X		108800 Mtexels/sec
	Difference: 143104 (132%)

Pixel Rate

The Radeon RX 6600 XT will be quite a bit (more or less 363%) better at anti-aliasing than the Radeon R9 280X, and also will be capable of handling higher screen resolutions better. (explain)

Radeon RX 6600 XT		125952 Mpixels/sec
Radeon R9 280X		27200 Mpixels/sec
	Difference: 98752 (363%)

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 largest amount of data (in units of MB per second) that can be moved across the external memory interface within a second. It is worked out by multiplying the bus width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of 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 this number, the better the card will be at 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 in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.