Radeon HD 3850 1GB vs Radeon RX 5700

Intro

Compare those specs to the Radeon RX 5700, which comes with a core clock speed of 1465 MHz and a GDDR6 memory speed of 1750 MHz. It also uses a 256-bit bus, and makes use of a 7 nm design. It is comprised of 2304 SPUs, 144 TAUs, and 64 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3850 1GB		75 Watts
Radeon RX 5700		180 Watts
	Difference: 105 Watts (140%)

Memory Bandwidth

Theoretically, the Radeon RX 5700 should be a lot faster than the Radeon HD 3850 1GB overall. (explain)

Radeon RX 5700		458752 MB/sec
Radeon HD 3850 1GB		52992 MB/sec
	Difference: 405760 (766%)

Texel Rate

The Radeon RX 5700 is much (more or less 1874%) better at anisotropic filtering than the Radeon HD 3850 1GB. (explain)

Radeon RX 5700		210960 Mtexels/sec
Radeon HD 3850 1GB		10688 Mtexels/sec
	Difference: 200272 (1874%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon RX 5700 is the winner, and very much so. (explain)

Radeon RX 5700		93760 Mpixels/sec
Radeon HD 3850 1GB		10688 Mpixels/sec
	Difference: 83072 (777%)

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 max amount of information (counted in MB per second) that can be transported past the external memory interface in a second. The number is worked out by multiplying the interface width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.