Radeon R9 285 vs Radeon RX 6750 XT

Intro

Compare that to the Radeon RX 6750 XT, which features a clock frequency of 2150 MHz and a GDDR6 memory speed of 2250 MHz. It also uses a 192-bit bus, and uses a 7 nm design. It is made up of 2560 SPUs, 160 Texture Address Units, and 64 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 285		190 Watts
Radeon RX 6750 XT		250 Watts
	Difference: 60 Watts (32%)

Memory Bandwidth

Performance-wise, the Radeon RX 6750 XT should theoretically be much superior to the Radeon R9 285 overall. (explain)

Radeon RX 6750 XT		442368 MB/sec
Radeon R9 285		176000 MB/sec
	Difference: 266368 (151%)

Texel Rate

The Radeon RX 6750 XT will be quite a bit (more or less 235%) more effective at anisotropic filtering than the Radeon R9 285. (explain)

Radeon RX 6750 XT		344000 Mtexels/sec
Radeon R9 285		102816 Mtexels/sec
	Difference: 241184 (235%)

Pixel Rate

The Radeon RX 6750 XT will be much (approximately 368%) more effective at full screen anti-aliasing than the Radeon R9 285, and will be capable of handling higher resolutions without slowing down too much. (explain)

Radeon RX 6750 XT		137600 Mpixels/sec
Radeon R9 285		29376 Mpixels/sec
	Difference: 108224 (368%)

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 (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 bus width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster 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 texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total texture units of the card by the core clock 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 maximum amount of pixels the video card 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 ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.