GeForce RTX 3080 12 GB vs Radeon HD 6850

Intro

Compare all of that to the Radeon HD 6850, which comes with a core clock speed of 775 MHz and a GDDR5 memory speed of 1000 MHz. It also makes use of a 256-bit memory bus, and uses a 40 nm design. It is comprised of 960 SPUs, 48 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6850		127 Watts
GeForce RTX 3080 12 GB		350 Watts
	Difference: 223 Watts (176%)

Memory Bandwidth

As far as performance goes, the GeForce RTX 3080 12 GB should in theory be much superior to the Radeon HD 6850 in general. (explain)

GeForce RTX 3080 12 GB		934298 MB/sec
Radeon HD 6850		128000 MB/sec
	Difference: 806298 (630%)

Texel Rate

The GeForce RTX 3080 12 GB is quite a bit (approximately 848%) better at anisotropic filtering than the Radeon HD 6850. (explain)

GeForce RTX 3080 12 GB		352800 Mtexels/sec
Radeon HD 6850		37200 Mtexels/sec
	Difference: 315600 (848%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce RTX 3080 12 GB is superior to the Radeon HD 6850, by a large margin. (explain)

GeForce RTX 3080 12 GB		141120 Mpixels/sec
Radeon HD 6850		24800 Mpixels/sec
	Difference: 116320 (469%)

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 data (counted in MB per second) that can be moved across the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better 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 per second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.