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21  Bitcoin / Hardware / Re: Any way to make IBM Bladecenter H 2880W fans quieter? on: December 09, 2015, 07:41:02 PM
Cheese and Rice, the EVGA 1600 is over $300! That's insanely expensive, considering one of my IBM Units power two S7's, and including the awesome Jabberwock breakout board and 20 PCIe cables per PSU, I bought them for about $260 before shipping and C20 cable, each.

Jabber, tell me more about how this fan mod works, and how to go about doing it.

Also, you said that the 2000W HP unit is quieter. If I use one of those, I'd likely have to use 1 per S7, so how much would one of those set me back overall?

Thanks guys, I appreciate the help
22  Bitcoin / Hardware / Re: Any way to make IBM Bladecenter H 2880W fans quieter? on: December 09, 2015, 06:41:29 PM
Hi all,

I just hooked up three different IBM Bladecenter H 2880W PSU's to my brand new S7's, and boy the fans on these PSU's are incredibly loud! These PSU's have a high pitched sorta whistle sound, almost kinda like the whistle you hear on a turbo. These PSU's have a pitch more noticeable than the actual miners in the room.

My question is, is there any way to make these fans quieter at all? Or a replacement for the stock fans that are quieter? Otherwise, do I have any other options? I ideally wanted to run platinum PSU's to these miners, so if there is no solution, is there a recommended replacement that you guys suggest?

Any help is greatly appreciated, thanks.

Server PSU's are not known for being quiet.  I doubt you are able to make it what you consider "quiet".   If going for less noise I traditionally would send someone twords ATX vs server psu.   I don't know that I have seen much as far as making them quiet.  If someone can think of one please post, I could not find quickly.

I think they are just loud PSU's at end of day. They are great for their price and amount of power, not for quietness.

But the problem with this is the 10 PCIE cables the S7 want's.   That get's most ATX psu's where they are not to good for the job.


Do you know of any ATX PSU's that are gold or platinum rated, that have slots for the 10 PCIe cables? Or a quieter sever grade PSU (I hear of people using Dell PSU's and other PSU's that run about 2000w max).

Or maybe Jabberwack knows of a quieter sever PSU with one of his breakout boards?
23  Bitcoin / Hardware / Any way to make IBM Bladecenter H 2880W fans quieter? on: December 09, 2015, 05:26:01 PM
Hi all,

I just hooked up three different IBM Bladecenter H 2880W PSU's to my brand new S7's, and boy the fans on these PSU's are incredibly loud! These PSU's have a high pitched sorta whistle sound, almost kinda like the whistle you hear on a turbo. These PSU's have a pitch more noticeable than the actual miners in the room.

My question is, is there any way to make these fans quieter at all? Or a replacement for the stock fans that are quieter? Otherwise, do I have any other options? I ideally wanted to run platinum PSU's to these miners, so if there is no solution, is there a recommended replacement that you guys suggest?

Any help is greatly appreciated, thanks.
24  Bitcoin / Hardware / Re: ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH on: December 06, 2015, 12:22:31 AM
ill offer you 0.09 BTC for 1 coupon

Mindtrip, sent you a PM.

Hawkfish, thanks. Great doing business.
25  Bitcoin / Hardware / Re: ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH on: December 05, 2015, 11:41:41 PM
Hi guys, I'm new to the forum but I've been mining since june (I currently have 5 S4's, 5 X3's - they are garbage, 3 batch 7 S7's, and 3 batch 8 S7's on order).

I have 3 $150 coupons I'm looking to get rid of, for batch 8. Since they do me no good (and since I apparently can't combine them to buy another batch 8 unit), I'm looking to get rid of them. I'm willing to take whatever you're willing to offer. They expire on the 31st tho, FYI.

Let me know if anyone is interested.
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