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What is this 2oz copper pcb?

dani.petro
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Go to solution Solved by mariushm,

Thicker copper traces and internal planes to carry voltages around the board. 1oz is around 1.4 mil (35 micrometers) of height, 2z is... more, duh.

 

More copper reduces the voltage drop over long distances, due to the resistance of traces.

The extra copper can also help to spread the heat, basically make the internal copper layers and copper fills behave like heat spreaders / heat sinks, helping with the vrm cooling on the motherboard. 

 

It can also help in some cases in combination with circuit boards that use a different type of fiber weaving, to reduce water ingress, in countries with high humidity... thinner traces will corrode faster.

Posted

I was looking at some newer motherboards like x570, z490 and most of them advertise 2oz copper pcb. Whaf does this mean? 

Is it a thicker pcb for better electrical conductivity for better oc or just some mumbo jumbo marketing bs?

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more pcb layers just affect memory overclocking for the most part. not cpu overclocking. 

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Copper layers twice as thick for better conductivity supposing same trace width.

 

In practice, marketing bull. 

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Gigabyte has been using the "2oz copper PCB" marketing thingy for ages now. You could pretty much call it marketing BS, yes.

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  • Author

Oh, I see. So its a mix of marketing bs with liitle to no real life benefits

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1 minute ago, dani.petro said:

Oh, I see. So its a mix of marketing bs with liitle to no real life benefits

well no 2oz pcbs have a thicker coppe so better power delivery 

if it was useful give it a like :) btw if your into linux pay a visit here

 

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Usually a matter of "there's no way to make a board like this work without 2oz layers, but let's put it as a marketing point anyway".

 

I.e making a board with good power delivery for high end chips just requires it, but the marketing department makes it look like they care about you and go overboard...

F@H
Desktop: i9-13900K, ASUS Z790-E, 64GB DDR5-6000 CL36, RTX3080, 2TB MP600 Pro XT, 2TB SX8200Pro, 2x16TB Ironwolf RAID0, Corsair HX1200, Antec Vortex 360 AIO, Thermaltake Versa H25 TG, Samsung 4K curved 49" TV, 23" secondary, Mountain Everest Max

Mobile SFF rig: i9-9900K, Noctua NH-L9i, Asrock Z390 Phantom ITX-AC, 32GB, GTX1070, 2x1TB SX8200Pro RAID0, 2x5TB 2.5" HDD RAID0, Athena 500W Flex (Noctua fan), Custom 4.7l 3D printed case

 

Asus Zenbook UM325UA, Ryzen 7 5700u, 16GB, 1TB, OLED

 

GPD Win 2

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  • Solution

Thicker copper traces and internal planes to carry voltages around the board. 1oz is around 1.4 mil (35 micrometers) of height, 2z is... more, duh.

 

More copper reduces the voltage drop over long distances, due to the resistance of traces.

The extra copper can also help to spread the heat, basically make the internal copper layers and copper fills behave like heat spreaders / heat sinks, helping with the vrm cooling on the motherboard. 

 

It can also help in some cases in combination with circuit boards that use a different type of fiber weaving, to reduce water ingress, in countries with high humidity... thinner traces will corrode faster.

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