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Since my old HP is acting weird and hashes low -> this topic (https://bitcointalk.org/index.php?topic=1912562.0) I need new HW.
So the new LGA 1151 are cheap with DDR4.

I was looking on this Gigabyte H270 (http://www.gigabyte.com/Motherboard/GA-H270-HD3-rev-10#sp)
1x PCIE 16x, 2x PCIE 4x, 2x PCIE and 1x PCI all 3.0
I've read that MSI B250 only support 4 gpu. Does H270 support 6 PCIE devices? I can't figure it out. Gigabytes B250 uses pcie lines with m.2 so I guess it won't run 6 gpus.

CPU Celeron G3930 and 4GB 2400MHz DDR4.

Or any tips for good mobo for reasonable price? DDR4 and LGA 1151 would be nice.

Thanks guys for tips and advices.

I found this topic (https://bitcointalk.org/index.php?topic=1855259.0)
It looks like Z270 should support 6 gpus or at least 5. But H270 also?

I found some youtube videos with russians mining with 8 gpus with Asus Z270 Prime (https://www.asus.com/us/Motherboards/PRIME-Z270-P/)
So I think I will go for this mobo.

Youtube video (https://www.youtube.com/watch?v=6l_Nm4zYa5A) how to enable 6+ GPUs on Z270 Asus mobo

I like the TB250 but maybe that is just me. The best motherboards seems to be hard to come by these days.

And here I am sitting on three boards that wont fire up due to bent pins. GRRRR

You mean PCI pins? Or CPU?
I'm not sure if this still work but on old PCI you could just hang the card without screwing it that put some pressure and boom card was working :D
CPU pin just gently bend back :D

could be a possibility if one can't find the h81 pro btc or the tb250, but be aware because that motherboard is not designed for six card and if you put 6 card with high wattage without the double molex you might screw something, fot this reason i only trust asrock or biostar

If you use powered riser, it should be fine.

I think I will use 1x PCIE x16 and up to 5x powered riser. I will buy 1000W Gold PSU so more than 5-6 gpu will not run anyway.
Those BTC are hard to find for good prices on ebay... and TB250 is not selling at all in CZ sadly :( Only some low cost Biostar are here. AsRock is popular here but not the BTC versions...

I found lot of videos from russians on youtube they all use Asus Z270 mobo some even used H270. They even set up 9 GPUs on Z270.

So I've bought Asus Z270 Prime P together with G3930 and Corsair HX1200.
Will post how this mobo is working. I have got just 3 GPU right now so it will took some time than I got more of them.

just read this not long ago , maybe it will help you
https://www.nicehash.com/index.jsp?p=news&id=155 (https://www.nicehash.com/index.jsp?p=news&id=155)

Thx, yeah, I didn't know it's working with PCIe 3.0 in videos they use 2.0.