Hey @Eliovp, i decided to try it by myself and most of my 380x weren't stable with mem 1750 for longer than few hours, (some even crashed on instant). 1625 on the other hand is rock stable so far. 380x Nitro with Elipda mem.
Timings used for 1625 strap are:
or
i made a little mess in my roms folder, you will have to test by yourself which one is proper/better.



Good luck with your mod, i'm sure you can squeeze even more hashes

5x r9 380x while mining ETH+SC ~800W at the wall using 1000W gold psu, so 1000W will be fine.

Some say that ribbon cables emits EM interference somewhere at 500MHz range (probably depends on ribbon length). Guy has been warned by some kind of telecomunication company. He build Faraday cage around his rig after that, to prevent interference. There was topic about that on bitcointalk, can't find it now.

How guy with 98 Gh/s can perform succesful 51% attack on 270 Gh/s network 

Yes it is
https://www.whattomine.com/

When people started to scream "scam" in other topics about this pool i started to worry. You are probably right, but i will be calm when someone who is mining there confirms that payouts are working and this is only a non-critical bug in the code.

Not sure about this one, people are not getting payouts, blocks are being found but nothing happens after that.

There are few
https://ethc.coin-miners.info/#/
http://ethc.epool.io/#/

http://www.aliexpress.com/store/product/Free-shipping-1-to-4-PCI-express-1X-slots-Riser-Card-Expansion-adapter-PCI-e-Port/710969_32251891381.html

It may be tricky to use, but look at the possibilities, so much hash power on one MoBo. You will probably need linux for that.

Have you tested it on dual mode? Is it stable there or does it need more Volts?

You didn't told us how much you pay for KWh, if your electricity is cheap and don't want to spend much, 7950 might be not bad idea.

Have you tried different OS to make sure this is software issue, not MoBo slot malfunction?

Have you tried swiching to PCIe x16 Gen 1.0 speed in MoBo BIOS?
Or more likely: Do you have Aero enabled or disabled?

Hi LeChuckDE, when you say "that are no HW errors" do you have a some method of searching for HW errors? When you push card to the limits and above, are HW errors somehow noticeable? Because that hashrate is looking awesome

How to verify if they are HW errors? Counting shares on the pool? Comparing profits from this miner with non modified one?

According to https://www.overclockers.co.uk/detail/index/sArticle/61887 it should be 22.07 (hover over "Pre Order"). Are they lying?

Add to the *.bat file.

This score was submitted in april, it's not very up to date.

I have exact same risers, they are working fine, but that foam on the bottom doesn't stick well to the board, it fell off.

Can you tell something more about that bios mod? Did you modified memory straps?