i have 4x Gameboys for sale. 2 working condition 2x for spares. price = offer. In sweden but can ship worldwide.    |
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were you ate?
all 4x for 1x sp20 ? is that what you mean ?
Might be tasty for me, depending on location .
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Got 2x psu Coolermaster 1000w and a Corsair on 1000w , both 80 plus gold!.
I was thinking 0.5 btc each ?, escrow works.
Or offer.
They are in sweden stockholm, i can send whit schenker all over the europe
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they are in sweden, i'll upload pictures soon.
was thinking 7 bitcoins for all?
3.2thz in total.
no psu
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At the end of the day a PSU is a PSU, in that if you are trying to dissipate 2000W of heat with 4 fans
On a power supply, you're only dissipating the heat caused by lost efficiency, NOT the total capasity of the PS. If your 2000 watt PS is 90% efficient, it's only needing to dissipate 200 watts (the "lost" 10%). Yeah exactly and i might be loosing 300w on my psus at 80% efficiency. So it will be 100w heat less, i think that 60c from 1x psu is better than having heat from 2x 60c. So i will have the room a bit cooler then. I think that putting 220m fan on the top and lower the exhaust RPM it migth be even good by just having 1 exhaust runing  |
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sp20 , 8000kr
c1 3500kr , ek xt360 Radiator, i fullt coppar.
s3 1400kr
alla funkar bra
escrow, mötes i stockholm.
Bitcoins eller cash!
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The larger fan is a ~4A delta, so I didn't bother trying to connect through the PCB, I fed power directly from a PCIe plug. With these fans at 100%, it is not much quieter than the stock 3 fans, and again never got around to getting the PWM from the board working. Maybe J4bberwock can chime in, I know he was working on something himself as well. In my experience, these PSU's are not good for someone looking for a quiet solution, it is just too much heat to be dissipated in a small case volume, you would need to run less Wattage on these to get away with a quiet fan solution, and that pretty much defeats the purpose of these PSU's to begin with.
Yeah this is what i am afraid of, i am on a closed enviroment, the ambient is about 38celsios up to 40 when the machiens been up for like 3-4 days whit no rest. I might consider to run dps 2000bb maybe ?. Prices are about the same of them two psu's but i am looking for the better effience. I was thinking to maybe cut open the entire top and put 4x 120mm fans at 7 volts , could this take care of the bussines ? I need to run about 2400 watts, sp20 and C1 , and one coming s3. Temperature does not seem to be a particularly large factor for these PSU's, they have very effective thermal shut offs before damage appears to take place. I've had a couple running for nearly a year in a similar ~300 sq ft environment that is almost completely closed off with minimal exhaust for heat. In the summer months, they would hit thermal shut off sometimes once a day. In the morning when I get back I power cycle them and they come back on every time. It's certainly not recommended, but my experience has been that they are very tough when it comes to heat (this is using stock fans) At the end of the day a PSU is a PSU, in that if you are trying to dissipate 2000W of heat with 4 fans, there shouldn't be a significant difference between models (only the frames for airflow). Meaning, if you could get away with 4 quiet fans on a DPS2000BB, I can't see why you couldn't get away with the same wattage using the same fans on a IBM 2880W. And inversely, if those 4 quiet fans can't keep the IBM 2880W cool at 2000W, I don't see how they would fare any better with the DPS 2000BB. That is my opinion anyways. Noise on the other hand, I am not entirely sure if it will be suitable for you, as I don't know what your expectations are. Yeah i understand, 2x 80fans is supposed to be silent on the 2000bb, but it is fanless at stock, so as u say i am guessing that 3x on a 2880w should not be a problem, maybe just put a 220mm fan on the top blowing into the case?. |
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The larger fan is a ~4A delta, so I didn't bother trying to connect through the PCB, I fed power directly from a PCIe plug. With these fans at 100%, it is not much quieter than the stock 3 fans, and again never got around to getting the PWM from the board working. Maybe J4bberwock can chime in, I know he was working on something himself as well. In my experience, these PSU's are not good for someone looking for a quiet solution, it is just too much heat to be dissipated in a small case volume, you would need to run less Wattage on these to get away with a quiet fan solution, and that pretty much defeats the purpose of these PSU's to begin with.
Yeah this is what i am afraid of, i am on a closed enviroment, the ambient is about 38celsios up to 40 when the machiens been up for like 3-4 days whit no rest. I might consider to run dps 2000bb maybe ?. Prices are about the same of them two psu's but i am looking for the better effience. I was thinking to maybe cut open the entire top and put 4x 120mm fans at 7 volts , could this take care of the bussines ? I need to run about 2400 watts, sp20 and C1 , and one coming s3. |
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Yes it is possible, this was my hack job:  Although I have not had a chance to mess around with it and get the PWM hooked up, it is a possibility to run this at full load. Another member graciously shared his IR thermal images of the PSU right after shutting it down and removing the lid to show where most of the heat emits from:   Interestingly, heat was not concentrated where I would have expected (with my complete lack of electronics knowledge mind you), and had I seen this before modding my case I may have re-thunk my fan layout. One important factor was blocking most of the airflow through the ventilated panel where the original fans mount (the front in this last picture), to concentrate more airflow towards the backplane/breakout board connector end, as it appears there is a large amount of heat emitting from under that center thick aluminum plate. Also, I do not suggest removing components and re-mounting them in a new chassis, it would be a complete waste of time at best, and potentially dangerous at worst. Thanks, this is what i was wondering, i saw modified 2000bbb PSU like this, tought the modification could work. How is the noise now? i am trying to get my system silent, right now it don't emit sound above 21db around that. Most says that this PSU is high pitched so close to silent i am looking for. Is the little fan connected to internal fan wiring ? |
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Is it possible to Modifie this PSU.
I i cut 2 bit holes on top and put 140mm fans or 120mm fans should it run smoothly ?
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Could the chain of linked miners to create a global super computer by accesing it ?  |
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were could i rent so much for good prices? |
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Can anyone tell me how loud is this PSU? i am considering to invest some serious cash in one , but the loudness is a problem for my mining operation it needs to be clear to silent.  then this is too loud. what are your power needs? 2000 watts? 1500 watts? 2880 watts? about 2300watts. running atm 2x 1000w pc psu but i need about 1400 for one machine so lacking 400w |
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Can anyone tell me how loud is this PSU? i am considering to invest some serious cash in one , but the loudness is a problem for my mining operation it needs to be clear to silent. |
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Has anyone tried turning an SP20 on it's side? It would seem you could eliminate the "hanging heatsink" if you rotated the SP 20 so that the blades are horizontal and not vertical. It would look a bit odd, but I wonder how it would change the temps.
I did think about it, but i removed it from entire case, it's really hard to put it on something else if it's not original case, there is no kind of extra hole to put them firmly onto some plates. But from side might reduce the tension, i don't know about the heat, fan is to noisy and the case makes the noise louder, my main problem was the noisy thats why i opted for removing it from the case. |
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What is the potential whit this coin ?
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Here's a link to a post regarding how to get these things to turn on:
