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Cryptomining solution for videocard high power transients?

Using dual non-redundant PSUs is complicated, this board seems to have vsense that triggers the second PSU on so that's an improvement... back in the day you had to manually start both at the same time.
That still leaves you with the physical issue, a server PSU doesn't fits an ATX case so you'd have to use a barebones case with the PSU simply chilling at the bottom. Oh, and they're noisy, like, REALLY noisy.

Hooking up a 2nd ATX unit is easy, I used to remove 2 fan screws and fasten the whole thing at the back of the case, it wasn't a modular unit so all the unused cables ended up hanging, now it'd be easier.
But still, getting say a dedicated 850W unit just for the graphics card(s) and then a 550W for the rest of the system is often more expensive than getting a single overkill unit.
I see dual PSU modding a dark art used by the poorest gamers, not by the rich that can afford a 3080 like it's candy.
 
parallel miner sells breakout boards that have ATX power as well.

what exactly is your issue? what is your psu?
 
It's not an issue for me, I'm just curious as to whether or not a dedicated +12V PSU would be a solution to the high power draw/transients that the next-gen Nvidia 4xxx series cards are expected to bring.
 
80251 said:
Moddiy has a custom PCB that hooks up to server PSU's that makes them into dedicated PSU's for videocards (or any devices that use PCIe 6-pin power):

https://www.moddiy.com/products/HP-...PU-BTC-Mining-Breakout-Board-Package-Kit.html

Would something like this help to mitigate high power transient issues for videocards being used for gaming?
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In short, Yes. Should be a 'plug and play' solution other than mounting it.

I have a 1200W HPE PSU on one of those boards for CPU, GPU, etc., and a 250W On-24pin 12V DC-DC PSU for mobo, etc. power in my temporarily retired De/Re-lidded 3770K + Z77 build.
Considering these PSUs should be cheap again ($19-40) w/ miners getting out of the game, it may be an affordable solution.
(I wouldn't fret buying used. These PSUs are intended for near 100% duty cycle use for many years in their original purpose. Mining is no excessive stress, and theoretically would've been ran cooler than most intended installs.)
The linked version of breakout board is meant to power-on automatically along with another PSU. Makes for a nice 'modern' solution to those 3.5" and 5.25" bay Aux +12V PSUs of old.

As far as noise, as long as it's ran nowhere near it's max rating, those PSUs aren't THAT bad for noise.
If one were dedicated, a custom 3D printed shroud and fan mount could quiet it down and keep it cool.
 
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80251 said:
It's not an issue for me, I'm just curious as to whether or not a dedicated +12V PSU would be a solution to the high power draw/transients that the next-gen Nvidia 4xxx series cards are expected to bring.
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If your in America on 110v then get a 220v line for the PC. PSUs have a little more headroom on 220v.
Did you watch the recent GN video and get worried?
 
Upgrayedd said:
If your in America on 110v then get a 220v line for the PC. PSUs have a little more headroom on 220v.
Did you watch the recent GN video and get worried?
Click to expand...

Since 230-250 is already sent to the home here (thats how electric dryers/ovens/waterheaters/furnace are able to function. It would require at least 10AWG lines.

I use a 1250W on a 110-120 Circuit. Eventually current draw becomes too much where heavier gauge wires are needed (8-6-4-2-0-00).

It 'sbecomming so high where you could creat a makeshift welder. So potential fire hazards are there for unsuspecting users.

Either way high power use began with RTX2000, so RTX 4000 will be the same.
 
I wouldn't be getting a 2nd psu for my gpu. I'd just get one good one and put it on 220v if I was really worried about it. It'll bring platinum psus into titanium territory. According to GN we're just going to need more psu headroom and as always get a quality one.
 
If these high transient spikes become a common issue, you'd think someone would come out with simple inline capacitors that have PCIe in port to plug PSU into and PCIe out to attach a PCIe extension cable into which you'd attach to GPU.
 
Upgrayedd said:
If your in America on 110v then get a 220v line for the PC. PSUs have a little more headroom on 220v.
Did you watch the recent GN video and get worried?
Click to expand...
Or just get a 20amp 120v outlet. Many homes already have these. 15 amp is mostly obsolete in new circuits.

My bigger concern is venting all that die heat. 450W tdp is already quite crazy, and pretty much at the limits of air.
 
R-T-B said:
Or just get a 20amp 120v outlet. Many homes already have these. 15 amp is mostly obsolete in new circuits.

My bigger concern is venting all that die heat. 450W tdp is already quite crazy, and pretty much at the limits of air.
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I'm not sure about all psus but some can run at a higher wattage if on 220v compared to 110v. I know at least some server psus are like that I'm sure there's atx ones too.
 
Upgrayedd said:
I'm not sure about all psus but some can run at a higher wattage if on 220v compared to 110v. I know at least some server psus are like that I'm sure there's atx ones too.
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That's just for fcc ratings. They'll (all?) run with as much wattage as they can be fed, up to an internal limit. They nearly always can go just as far on 120 as 240 given appropriate amps.

This was common knowledge in mining town.
 
R-T-B said:
That's just for fcc ratings. They'll (all?) run with as much wattage as they can be fed, up to an internal limit. They nearly always can go just as far on 120 as 240 given appropriate amps.

This was common knowledge in mining town.
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I could've swore when I was shopping for server psus some rated for less wattage on 110v. Maybe like 1400w to 1200w. I could be wrong, been a while since I looked at them.
 
Upgrayedd said:
I could've swore when I was shopping for server psus some rated for less wattage on 110v. Maybe like 1400w to 1200w. I could be wrong, been a while since I looked at them.
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Yes, that would still be for rating reasons. They'll still run fine.
 
Upgrayedd said:
I could've swore when I was shopping for server psus some rated for less wattage on 110v. Maybe like 1400w to 1200w. I could be wrong, been a while since I looked at them.
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Depends on the PSU, but you're generally correct. Even on 110v-125vac, they're still very powerful, and a 1200W unit limited to 120VAC would still be more than sufficient for a dedicated Aux GPU PSU.

As far as supplying 240VAC in-home:
My 'office' had a Cadet wall heater on a 20A dual-pole 240VAC circuit. I disconnected the heater, and installed a 30A Locking NEMA 250VAC receptacle in place of the thermostat. (As long as it is the *only* receptacle on the circuit, this is 'NEC compliant'.)
Off that 240VAC circuit, I run an American Power Conversions 208VAC+ PDU down to 4 x4 IEC receptacle power strips that run all my 110-250VAC wide-input devices, and a 2.2kva autotransformer for my few dedicated 125VAC devices.
 
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gamers nexus said this goes back to 1000 series.
I'm wondering how this affects multi cards in SLI/mGPU. If it's just the main card connected to the display output or will still happen on both cards regardless of being in sli, mGPU.
I don't think cooling 600 watts on a single die in a gpu is realistic at this point. I'd much rather cool two 300 gpus.
 
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Upgrayedd said:
Could also just not buy a 600w gpu.
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It's apparently a problem for all cards above 250W mark, and I'm not too fond of limiting myself to mid range cards (just because of manufacturer's short sightedness).
 
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