Radeon RX 460 vs Radeon RX 6800

Intro

Compare that to the Radeon RX 6800, which comes with a core clock speed of 1700 MHz and a GDDR6 memory speed of 2000 MHz. It also uses a 256-bit bus, and makes use of a 7 nm design. It features 3840 SPUs, 240 Texture Address Units, and 96 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460		75 Watts
Radeon RX 6800		250 Watts
	Difference: 175 Watts (233%)

Memory Bandwidth

The Radeon RX 6800 should theoretically be much faster than the Radeon RX 460 overall. (explain)

Radeon RX 6800		524288 MB/sec
Radeon RX 460		112000 MB/sec
	Difference: 412288 (368%)

Texel Rate

The Radeon RX 6800 is a lot (more or less 568%) more effective at texture filtering than the Radeon RX 460. (explain)

Radeon RX 6800		408000 Mtexels/sec
Radeon RX 460		61040 Mtexels/sec
	Difference: 346960 (568%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon RX 6800 is the winner, and very much so. (explain)

Radeon RX 6800		163200 Mpixels/sec
Radeon RX 460		17440 Mpixels/sec
	Difference: 145760 (836%)

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 information (counted in MB per second) that can be transferred across the external memory interface in a second. It is calculated 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 ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.