I guess with the extra wattage the PSUs will run with slightly less heat.
What do you mean by "and don't care if 7.7TH are down".. Do you mean down (failure) due to not following the warranty instructions?
@cniht & @sloopy,
I appreciate your responses.
Keep to the warranty statements to the letter.
IF you aren't sure, ask BITMAIN and get in writing from them. I do not say this to say people are dishonest, I say this because misunderstandings happen, and they happen even more when the boss is in china, or the questions and answers are being translated from english to chinese, just get it in writing and e-mails are fine.
Keep your documentation from your order being placed and confirmed like you keep your bitcoins. Backed up, printed copies stored in several locations haha. Seriously though, that is your only warranty ticket and what you will be asked to send them for any warranty claim. Keep a digitized / scanned / emailed copy handy,and a printed copy somewhere else.
Just because a guy here on the forum pulls his apart on day one and re-pastes the heat sinks doesn't mean you need to do so. They are dead serious about not doing anything without their permission and people can tell many things. They put marks, stickers, etc all over the place sometimes. I do check the cable connections. I'm not dismantling the thing to do so without their permission which I will ask and I expect them to say yes. It is not unheard of at all for things to work loose between here and there, and I haven't been told no but CYA - cover yo ass -
Few things I'd like to comment on that may help or may not help with the general discussion. I got my first S5 from Amazon, I it's new, it's a 90-day warranty. I think the 90 day warranty is cool. (They literally said the seller was Bitmain and it comes in standard packaging like from China) Also Amazon is a huge company, dealing through them gives little ole me a bit of muscle for returns or other things because of defects (at least within the first 30 days). But I definitely got screwed on price, $569 after taxes. Most of that being just Amazon markup. (MY FIRST mistake in bitcoin mining). Then I got a ATX Corsair 750 bronze also from Amazon. (SECOND mistake) After hooking the things up I was getting like a whopping 83-85% power efficiency rating. After actually learning what an 80+ bronze/Silver/Gold/Plat/Titanium rating even means then I realized running two of these S5's as a test run (which was my plan at first before trying to turn this into a mini-business.) I would be having massive expenses in kw/h costs over that gold EVGA 1300W2 which is gold and will run two miners solo. So it accomplishes my objective. Luckily Amazon with their return policy allowed me to 'correct' this mistake. I just ordered the other power supply, and am returning the 80+ Bronze supply. Then I learn about the difference between a Server PSU and an ATX PSU and it is giving me even more food for thought, so definitely 'read, read, read' as you said.
However on the warranty stuff, they start on a lot on the little card (basically about all the ways they can shred your warranty) they give you about not making modifications etc etc. However on their support/troubleshooting page they literally give you pages upon pages of disassembling the devices and putting them back together and adding thermal paste etc. No where on ANY of those pages does it say those actions violate or invalidate the warranty. I had to use those pages because I had a hash board that literally wasn't firing, and I still have 1 dead chip on the other hash board. Granted, you're not really 'modifying' their device like with the Inline delay that you mentioned between cords. But while I agree Email in writing direct from Bitmain Support is always the best option. I'd think they have to grant a little leeway since they are freely offering up instructions on how to basically disassemble and reassemble their device as official 'Support Troubleshooting'. I take the phrase 'don't modify our device' on the warranty as in
don't change the core structure of any of our components (moving them around would be fine). But as you are trying to do, you want the CYA.
I completely agree in the future avoiding re-sellers like the plague, even Amazon. Just buy bitcoins from exchanges and then purchase your goods for Bitmain. In the least saves a ton on fees and that middle man margin.
(Page in question I had to use to test hash boards Btw I got the board fixed, loose connection or something.)
https://bitmain.zendesk.com/hc/en-us/articles/204875015-How-to-diagnose-S5-hashing-PCBPS: I did not take the actual hash boards off the heat sinks to check the paste. That was just a little too scary for me right now when dealing with an alien product I just blew $500+ on.
But if Bitmain is going so far as to push you toward pages with that detailed of work for a retail consumer then you should have to have some minor wiggle room as far as doing things and not invalidating the warranty.
With regard to the comment about the stacking and heat, I also agree with you. I didn't take any of that into account in my analysis Same with cost on PSUs. But I also basically am looking at the S5+ as 'made for' a data center environment. It just doesn't seem to be home miner friendly. But you're right. All the other things out there, Bitmain seems to be the ONLY company selling products that offer a true ROI.