Power supply for 4x470

[stoleyourburger]

Hello everyone.
I sincerely ask for help from the community.
Currently I have two PCs mining Zcash/ETH (depends on their market price). Nothing is overclocked. RX 470 have modded bios.
First one is: Mobo p8h61-m le, CPU i5-2300, 8 Gb RAM, HDD 160 GB, 3x ASUS Strix 470 4 GB,750W PSU (80 Bronze).
The second is pretty much the same Mobo (except it has 4 PCI-e slots), i3 CPU, 4 GB ram, HDD 80 GB, 1x Asus 380 4 GB, 600W PSU (80 Bronze).

So I intended to switch PSU, as I checked that each RX 470 has TDP=120 Watt, so that means 120*3=360, leaves about 200+ Watt for Mobo, CPU and HDD. Should be enough. So I switched, but the farm worked for like 2-3 minutes, then PSU turned itself off.
My plan was to use 600W PSU on the MB with 3x470, and use 750W with 4x470 (remove 380 completely).
But now I am a bit confused: I am afraid that if 3x470 don't start on 600W, I believe that even 800-850W PSU (I intended to buy 800W for rigs with 4x470) won't be enough for 4x470.

Again, I don't overvolt/overclock anything, only using modded bios cards.

Do you have any ideas/suggestions on what PSU should be used with 4x470? Should I not try to save money and buy 1000W PSU already for 4x470?

Really looking forward to any ideas. Thanks!

[h311m4n]

Hello,

I have 2 470 rigs, the first with 4x 470 8Gb use a 1000W corsair gold, the second with 4x 470 4Gb uses a 850W corsair platinium.

Roughly, with ZEC, you can make your cards use 90ish Watts when undervolted (not talking gpuz numbers, but at wall), so in theory, a 600W supply should be able to run four of these with a basic system. However, I would not got less than 850W.

850W should be fine with 4x 470s

[stoleyourburger]

Hello,

I have 2 470 rigs, the first with 4x 470 8Gb use a 1000W corsair gold, the second with 4x 470 4Gb uses a 850W corsair platinium.

Roughly, with ZEC, you can make your cards use 90ish Watts when undervolted (not talking gpuz numbers, but at wall), so in theory, a 600W supply should be able to run four of these with a basic system. However, I would not got less than 850W.

850W should be fine with 4x 470s

With stock settings 600W doesn't hold 3 of 470s, so I guess there won't be any chance to run 4x470s with 600W. Dunno about 850W.

Did you undervolt the second gear (850W)? Or pure stock settings?

Well, how to undervolt then? What's more important, won't be any consequences after undervolting?

Thanks

[toptek]

https://www.amazon.com/EVGA-SuperNOVA-PLATINUM-Warranty-220-P2-0850-X1/dp/B010HWDOH6/ref=sr_1_fkmr0_2?s=pc&ie=UTF8&qid=1480070576&sr=1-2-fkmr0&keywords=EVGA+SuperNOVA+850+B2%2C+80%2Bgold+850W

https://www.amazon.com/EVGA-SuperNOVA-Modular-Warranty-220-G2-0850-XR/dp/B00IKDETOC/ref=sr_1_fkmr0_1?s=pc&ie=UTF8&qid=1480070576&sr=1-1-fkmr0&keywords=EVGA+SuperNOVA+850+B2%2C+80%2Bgold+850W

https://www.amazon.com/dp/B015YEI9NQ?psc=1

https://www.amazon.com/dp/B015YEI8JG?th=1


any of there should do it but id go with the 1000 watt one who knows you may want to add two more 470 or even two more 480 later on.  even buy a 490 next year when they come out.

I would look more into the future then the here and now. I all ready plan to upgrade to 2 1500 watt PLATINUM  server PSU's http://www.ebay.com/itm/684532-B21-684529-001-HP-1500W-CS-Platinum-Plus-Hot-Plug-Power-Supply-/252627974019?hash=item3ad1ccf783:g:hmkAAOSwpLNYAQtI  some time next year. the Psu cost 80 bucks each but i need other stuff unlike atx Psu's which i have now and they run on a 220 line so i will save a little moire power cost wise.

any good 750, 850 watt gold standard PSU can power 4 470 for eth or Zrec mining , i wouldn't worry to much about what the rest of the rig/pc uses power wise if the software miner is written right it should only use the GPU, the cpu should set at 10 % usage or lower most of the time but do ad in an other 20 % for the rest of the pc which should be covered by a 750 to 850 watt gold standard Psu easy.


my rig that has three RX 470 and one RX 480 runs around 562 watts at the wall total before i modded the bios on the 480, i haven't looked yet to see what it does with the 480 modded, i was using a 850 watt gold standard PSU by Corsair but me being me i put that rig on a 1300 Evga gold standard PSU.( over kill  ) , i have that was laying around . for no other reason then it was there to use .

[Fatinan]

I have 5 x 480 undervolted rig with 1000W PSU, and with zec it takes 520W from the wall. So I thing 600 - 750W is enough for 4 x 470.

That is right. If you undervolt, 600W is more than enough.

[stoleyourburger]

I have 5 x 480 undervolted rig with 1000W PSU, and with zec it takes 520W from the wall. So I thing 600 - 750W is enough for 4 x 470.

That is right. If you undervolt, 600W is more than enough.

So I guess in case of undervolting, the Sol/s is decreasing, right?

[toptek]

I have 5 x 480 undervolted rig with 1000W PSU, and with zec it takes 520W from the wall. So I thing 600 - 750W is enough for 4 x 470.

That is right. If you undervolt, 600W is more than enough.

So I guess in case of undervolting, the Sol/s is decreasing, right?

no not really i thought the same thing it will lower heat and use less power but less sol maybe not if done right.undervolting doesn't all ways mean it will lower the speeds . it can and does make the card more effective in how they use power and produce heat .

[stoleyourburger]

I have 5 x 480 undervolted rig with 1000W PSU, and with zec it takes 520W from the wall. So I thing 600 - 750W is enough for 4 x 470.

That is right. If you undervolt, 600W is more than enough.

So I guess in case of undervolting, the Sol/s is decreasing, right?

no not really i thought the same thing will  lower heat and use less power but less sol maybe not if done right.undervolting doesn't all ways mean it will lower the speeds .

Oh thanks, so how do you undervolt exactly? Modding BIOS, or using MSI Afterburner? Or any other software?

Thanks!

[toptek]

yea the best way is modded the bios to use less power and produce more speed that what's so nice about  these cards now that use 14 NM chips . and they are just getting started ..

you can use afterburner or the WattTool http://www.overclock.net/t/1609782/watttool-a-simple-tool-that-combines-overclocking-with-vrm-monitoring-tweaking-for-rx-400-series but nothing works better so far then letting the card do it self buy modding the bios and doing little tweaks with those tools .

[stoleyourburger]

yea the best way is modded the bios to use less power and produce more speed that what's so nice about  these cards now that use 14 NM chips . and they are just getting started ..

you can use afterburner or the WattTool but nothing works better so far then letting the card do it self but modding the bios and doing little tweaks with those tools .

Sorry if I ask a lot, but do you have a proper guide for RX 470 to undervolt (BIOS way)? I'd greatly appreciate that. Thanks!

[toptek]

yea the best way is modded the bios to use less power and produce more speed that what's so nice about  these cards now that use 14 NM chips . and they are just getting started ..

you can use afterburner or the WattTool but nothing works better so far then letting the card do it self but modding the bios and doing little tweaks with those tools .

Sorry if I ask a lot, but do you have a proper guide for RX 470 to undervolt (BIOS way)? I'd greatly appreciate that. Thanks!

https://forum.z.cash/t/anoraks-vbios-collection-optimized-settings-for-performance-power-saving/8347 

[stoleyourburger]

yea the best way is modded the bios to use less power and produce more speed that what's so nice about  these cards now that use 14 NM chips . and they are just getting started ..

you can use afterburner or the WattTool but nothing works better so far then letting the card do it self but modding the bios and doing little tweaks with those tools .

Sorry if I ask a lot, but do you have a proper guide for RX 470 to undervolt (BIOS way)? I'd greatly appreciate that. Thanks!

https://forum.z.cash/t/anoraks-vbios-collection-optimized-settings-for-performance-power-saving/8347 

I appreciate that! Didn't test yet, but will.
Thanks!

[PanneKopp]

Hi @stoleyourburger,

Do you have any ideas/suggestions on what PSU should be used with 4x470? Should I not try to save money and ... for 4x470?

... yes of course !

Take EVGA-QG750-v2(?) ! gold !

... is running fine wt my i3-6100 + 2 x RX480/8 + 2 x RX470/4
 ~ 750 sol/ @ 700W from Wall

  PanneKopp

[toptek]

he right i was doing about the same with a 850 watt gold PSU i was hitting 562 watts at the wall with three 470 and one 480 but mine are modded to use less power and hash more i can probable get more out of them at a cost by max over clocking and hope i don't make them to unstable , il play it safe i found my sweet spot.


or
 689 sol using 562 watts at the wall with only one 480 so if i had two ID be close mine are all 4gb cards so it would be close.

[stoleyourburger]

he right i was doing about the same with a 850 watt gold PSU i was hitting 562 watts at the wall with three 470 and one 480 but mine are modded to use less power and hash more i can probable get more out of them at a cost by max over clocking and hope i don't make them to unstable , il play it safe i found my sweet spot.

Strange. How come then I have 3x470 and 600W PSU wasn't enough for them? Maybe because I was also mining on CPU of this PC? Maybe should I try without loading up CPU miner?..

[toptek]

he right i was doing about the same with a 850 watt gold PSU i was hitting 562 watts at the wall with three 470 and one 480 but mine are modded to use less power and hash more i can probable get more out of them at a cost by max over clocking and hope i don't make them to unstable , il play it safe i found my sweet spot.

Strange. How come then I have 3x470 and 600W PSU wasn't enough for them? Maybe because I was also mining on CPU of this PC? Maybe should I try without loading up CPU miner?..

by using the CPU using to mine using software ?. .  what software  miners are you using ? .


try this if your using the nice hash miner that's what it sounds like your using ? .

https://bitcointalk.org/index.php?topic=1670733.0

remember if there not tweak right  thy can use more power at stock settings and hash slower . and 80 Bronze is rated lower then a  80 + gold PSU .

[stoleyourburger]

he right i was doing about the same with a 850 watt gold PSU i was hitting 562 watts at the wall with three 470 and one 480 but mine are modded to use less power and hash more i can probable get more out of them at a cost by max over clocking and hope i don't make them to unstable , il play it safe i found my sweet spot.

Strange. How come then I have 3x470 and 600W PSU wasn't enough for them? Maybe because I was also mining on CPU of this PC? Maybe should I try without loading up CPU miner?..

by using the CPU using to mine using software ?. .  what software  miners are you using ? .


try this if your using the nice hash miner that's what it sounds like your using ? .

https://bitcointalk.org/index.php?topic=1670733.0

remember if there not tweak right  thy can use more power at stock settings and hash slower . and 80 Bronze is rated lower then a  80 + gold PSU .

I'm using Claymore as GPU miner, and nheqminer for CPU.
I will check, I have ASUS Strix 4 GB RX 470, will check if there is proper BIOS for that.. Thanks
I'm a bit afraid that I can damage the card/cards... But I guess it should be worth it.

[toptek]

he right i was doing about the same with a 850 watt gold PSU i was hitting 562 watts at the wall with three 470 and one 480 but mine are modded to use less power and hash more i can probable get more out of them at a cost by max over clocking and hope i don't make them to unstable , il play it safe i found my sweet spot.

Strange. How come then I have 3x470 and 600W PSU wasn't enough for them? Maybe because I was also mining on CPU of this PC? Maybe should I try without loading up CPU miner?..

by using the CPU using to mine using software ?. .  what software  miners are you using ? .


try this if your using the nice hash miner that's what it sounds like your using ? .

https://bitcointalk.org/index.php?topic=1670733.0

remember if there not tweak right  thy can use more power at stock settings and hash slower . and 80 Bronze is rated lower then a  80 + gold PSU .

I'm using Claymore as GPU miner, and nheqminer for CPU.
I will check, I have ASUS Strix 4 GB RX 470, will check if there is proper BIOS for that.. Thanks
I'm a bit afraid that I can damage the card/cards... But I guess it should be worth it.

using nheqminer 4.0 something  ? .I tried that for a while even got more hash out of it for maybe a hour then for no reason i saw either the CPU or the GPU would stop hashing for a while then pick back i wasn't over heating no errors i could fine any place it just stopped from time to time after that hour using nheqminer 4.b something .to be honest now that i think about it might have been claymore miner doing it with his fee it may have been 90 seconds in to mining the fee he has does that it drops off to another pool but nothing like this was doing  but i can see why it would .

[stoleyourburger]

using nheqminer 4.0 something  ? .I tried that for a while even got more hash out of it for maybe a hour then for no reason i saw either the CPU or the GPU would stop hashing for a while then pick back i wasn't over heating no errors i could fine any place it just stopped from time to time after that hour using nheqminer 4.b something .

Yeah, there is 0.4a nheqminer. About 10 sol/s, but I don't care about electricity (it's free) so I don't mind CPU mining, because it's better than nothing, idling. One rig's CPU is working 24/7 for like a week or two, but another one stops, shows 0 sol/s from time to time as well, strange and buggy.
Good luck that claymore miner never stops, and is super reliable.

[toptek]

believe or not that's not really much power being used i was worried more about it dropping off to zero what that was doing pool side or how good that is or what dmg if any it might do, my power is free to some extent as well .I mean i help pay it because i want to i don't have to, it's only fair i use it so i should help some.