Single EVGA 1000GQ PSU (1000 GQ) for use on a 15A/120V Bitmain S9?

[HagssFIN]

Old thread I know,
but you can't underclock an S9, so drop that idea right now.

Yeah. I'm running my S9, batch 2 at ~9.8Th/s (456.25Mhz frequency) with 1000W Enermax Revolution 87+ power supply.

[1715637366]

1715637366

[1715637366]

1715637366

[1715637366]

1715637366

[1715637366]

1715637366

[takagari]

Old thread I know,
but you can't underclock an S9, so drop that idea right now.

Yeah. I'm running my S9, batch 2 at ~9.8Th/s (456.25Mhz frequency) with 1000W Enermax Revolution 87+ power supply.

Yes but the new batches, 12 and on I believe, are autotune. You can't adjust the Frequency, so you can't step them down a bit to come under power requirements.
The new 11th ones would likely be okay on 1300watts. but the 14th model I have, from the latest batch, pulls 1425 at the wall. No way to bring it down to squeak it onto a 1300watt psu.

[HagssFIN]

Old thread I know,
but you can't underclock an S9, so drop that idea right now.

Yeah. I'm running my S9, batch 2 at ~9.8Th/s (456.25Mhz frequency) with 1000W Enermax Revolution 87+ power supply.

Yes but the new batches, 12 and on I believe, are autotune. You can't adjust the Frequency, so you can't step them down a bit to come under power requirements.
The new 11th ones would likely be okay on 1300watts. but the 14th model I have, from the latest batch, pulls 1425 at the wall. No way to bring it down to squeak it onto a 1300watt psu.

Yeah sorry I have read this with sleepy eyes and have had a brain fart.
New batches suck because of the autotune settings.

If possible I would recommend buying the older batches.

[takagari]

The latest firmware allows you to set a freq on initial firmware install. So I guess you COULD downgrade with a firmware install

[lazypolarbears]

Old thread I know,
but you can't underclock an S9, so drop that idea right now.

You can with the 14Th/s Batch 1 (running the old firmware) - I have it down to 11Th/s (stable) @500MHz with only 45% fan speed.

The latest firmware allows you to set a freq on initial firmware install. So I guess you COULD downgrade with a firmware install

Thanks for the advice - I know it's been a while since I posted in this thread but things got worked out - I have 3x S9's hashing under my college dorm bed (extra fan intake in; exhaust vent out; amazing space-age material to create tents for heat/noise isolation). Pretty cool setup.

I can confirm that the EVGA-1600 Platinum's work great nonstop with S9's, any model. If you're buying a $2k machine it doesn't rly make sense to skimp $100 on a cheaper PSU...

The new EVGA-1000 G3 is amazing on my R4's. I'm considering hashing another R4 but it'd have to be split circuit - that is, like a 550W PSU powering each board from 2 separate circuits (I can have one powering the controller as well). I know this works on the S9 and S7 - does it work on the R4?

[philipma1957]

Old thread I know,
but you can't underclock an S9, so drop that idea right now.

You can with the 14Th/s Batch 1 (running the old firmware) - I have it down to 11Th/s (stable) @500MHz with only 45% fan speed.

The latest firmware allows you to set a freq on initial firmware install. So I guess you COULD downgrade with a firmware install

Thanks for the advice - I know it's been a while since I posted in this thread but things got worked out - I have 3x S9's hashing under my college dorm bed (extra fan intake in; exhaust vent out; amazing space-age material to create tents for heat/noise isolation). Pretty cool setup.

I can confirm that the EVGA-1600 Platinum's work great nonstop with S9's, any model. If you're buying a $2k machine it doesn't rly make sense to skimp $100 on a cheaper PSU...

The new EVGA-1000 G3 is amazing on my R4's. I'm considering hashing another R4 but it'd have to be split circuit - that is, like a 550W PSU powering each board from 2 separate circuits (I can have one powering the controller as well). I know this works on the S9 and S7 - does it work on the R4?

Should work .

How about a few photos.  Imgur.com would host and,let you post here.

[lazypolarbears]

Will post pics when I set back up for dorm mining (free electricity) - had to disassemble for winter break due to room inspections... sucks cuz would've been a great time to hash (err... except for the last few days). It looks sick in the dark!

So would a 550W PSU x2 be enough to power a R4, 1x on one standard NA circuit (~1800W) for hash board #1, and main board + hash board #2 for the other PSU? I have to "split" circuits" due to that I'm running S9's (13.5Th/s B-18 or 19 I forget) on the other two circuits...

Moreover, is this SAFE?! I know there's an unsafe way to power a S7 with 2 PSU's... not sure about the R4 :/