Im using Windows...hmm im running other 4x 5700xt in TMR on 1400mhz without any problem..
1400mhz-750mV
..but for now i leave just one 5700 xt  on 1400mhz -975mV..running for 24h without problem..so we will see

I try even that..so for now ..if i put setup on 5700xt 1400mhz and 750mV..gpu dont want even to start mining..i try 1400mhz 850mV works for almost 24h..now i put 975mV..and see what happends...and overclock is stock..didnt want to touch ..

some times even other gpu..i change risers as well..pcie slots as well..with 5 gpu working well one day or sometimes few hours,and just crash to 0 mhs..i was thinking its problem with gpu..but i did some benchmarks..gpu work fine..games as well..really strange..right now rig works with 4 gpu without any problem.

I even use other psu just to supply mb,cpu,ssd..so wierd..im out of ideas

Yes and working well..no issues..

Silverstone st1000-pt..1000w just using to supply gpu n riser..

Yeah..even stock even flash..i think still its psu problem,not enough for 5x 5700xt

Yes even that..from max to min..always same..i try phoenix n trm..

I try from 750 till 1200..step by step(750-760-770....1200)..all time same..

Rig working few hours,and then one of gpu lose mhs..example 55mhs to 0 mhs..and show like gpu is dead..!! I check risers one by one works well..stock gpu work some period and again on 0 mhs..undervoltage as well ..if i put 4 of them..then works without problem..

Exactly like that..i already start to mine ETH,with riser and 5x 5700xt 1000w and overclock undervolting ..i get so many issues..so i ask for help..best option and to resolve problem

Cool..yeah that is option what i have at moment,all psu are unknown delivery time or just out of stock..that 3 what i write are only available..but again thanks guy's..appreciate for help

Ohh ok..thanks for quick answer..i have few psu available right now..
Inter-Tech SAMA FTX-1200-1
KOLINK KL-C1500PL 1500W
Silverstone ST1300-TI..maybe some of these..or any other solution ?

I have Silverstone st1000pt 1000w psu and 5x 5700xt ..i was curious that psu will enough to supply all of gpu..and i have another 850w psu for mb,ssd..etc..if is not enough,your recommendation of psu ?

Bas zbog tih stvari sam se odlucio na promenu,preopteretio sam sata kabal..i naravno da je doslo do kresovanja riga..pri cemu se 6pin ulaz u psu istopio..al na srecu nista ozbiljno

Hvala puno na korisnim informacijama. Svako dobro zelim

Cak sta vise sam razmisljao da koristi pcie 6 pin za direktno napajanje risera..da li je to jos bolja opcija.
https://www.onlinekabelshop.nl/media/catalog/product/cache/c18edf4837116843a3f95245084ccb34/o/k/oks-65463-pcie-6-pins-m-pcie-8-pins-6-plus-2-m-voedingskabel-hoofd_1.jpg

I have 5 x 5700xt,dual psu 1x1200w 1x850..so i use sata cable to supply my riser..and i have so muc issues whit that..so i want to change power supplies for my riser..6 pin male to 8 pin (6+2) male pcie power cable..what is your opinion about that..worth it..i post pictures as well..https://www.onlinekabelshop.nl/media/catalog/product/cache/c18edf4837116843a3f95245084ccb34/o/k/oks-65463-pcie-6-pins-m-pcie-8-pins-6-plus-2-m-voedingskabel-hoofd_1.jpg

Pozdrav svima ..imam mining rig sa 5 x 5700 xt ,zanima me spajanje risera ...da li je bolje da koristim 1:1 kombinaciju..jedan riser jedan sata prikljucak(samo sata kablove imam),da ne stavljam vise risera na sata prikljucke,tipa 2 ili vise .. hvala svima

i try on my PC do benchmarks..work well..and try to do mining as well..like half hour without problem..i leave everything on stock..not even clock..voltage..didnt touch ....if i put back on rig and leave like that..other 3 gpu use like +/- 100w and this one +/-180 its will make any issues ?