Keep it on topic please ..... and DO NOT try to be nice to me, just state and respond to (the) facts. Ulterior agenda against you ....? Come off it and do not flatter yourself, honestly, why would anyone have an axe to grind with you ..... ?

You are such a fool to antagonise bitmain in such a manner. You posting that on the wiki page linked from the main site does not make it a term of purchase. A more appropriate place would be the user-manual ..... and do that knowing pretty well it can not be applied retrospectively, and you should make that clear in the "advice posts" you make on this forum (to the people that are naive enough to take your advice).

Just to clarify, how does positioning your S5 vertically void the warranty, or are you just being off-topic for the sake of it?

And by the way, this is NOT a bitmain forum where you as the self appointed bitmain representative can dictate what is posted or not, be it about bitmain products or not.

You've advised people to upgrade their S3 firmware to your corrupted, self hosted firmware and the same persons have reported failed chips on their rigs from installing your firmware download, how many of those have you recompensed?

Thanks for bringing that to our attention, but I am afraid that can not be applied retrospectively to units bought before whatever date it appeared. Infact, despite bitmain having a winner of a machine in the S5, this addition to their wiki (which I am not yet sure whether it is referenced to be part of the conditions of purchase) without being dated is an underhand way of dealing with their customers. But hey, it is what it is .... a small print added to limit their exposure and shaft their customers.

This is simply a case of if dogie did not suggest the idea, its a bad idea. The OP clearly stated that he's got several S5's in the vertical configuration and philipma1957 is simply confirming that  it works for a single unit too! What is so hard to understand about that?


No, the OP said you seem misinformed on a lot of different topics and that he was not 100% sure you actually work for Bitmain. I actually know the OP's sentiment to be accurate, and there is nothing personal about that in my or OP's case. As the OP said, that is borne true by your fabricated terms of warranty which you have been peddling all over this forum for your own selfish, self gratification (there's a special term for that ..... I am sure you know what it is).

I can confirm that I noticed an improvement in temps on a vertically positioned S3. I only run it for a few hours on a day that was warmer than it has been in the last week and the temps on both blades were down by 3 and 5 respectively (whatever units they use) for the duration. I need to get a more sturdy mesh on which to deploy them for the long term so I'll do this when I next get some free time over the coming weekend.

You are right, the shipping edges what I can get them for from Farnell as they offer free shipping on orders over a measly GBP 10.00, but that by just a couple of pounds.
Nevertheless, you edge Farnell out by accepting BTC so I will order from you when I run low on them as a couple of pounds is a price I am willing to pay to add footfall (however small ...) to the BTC system.

Have you got any idea about the fire handling capabilities of building grade MDF?
I doubt even an exploding prisma can set any kind of noticeable fire on MDF .... well at least MDF manufactured in Germany / for EU use.

I'd be interested in these depending on the overall cost (including shipping to UK). What'd be the price + shipping for a lot of 30 2 poles?

I just looked at the datasheet again and they actually do many poles, from 2 to 12. So I suppose you have the option of narrowing your search to part number CTB04VY/8 (which is the 8 pole one) - good hunting! My gripe with them is that they are in green only!

http://www.farnell.com/datasheets/1564539.pdf

Keep looking if you will, but joining them up will solve it perfectly.
PS. I'll give you a money saving tip - you don't need a board, your power connector is 6.35 pitch and so are the terminal blocks. If you snap off those prickly PCB legs from your connector, you can solder the legs of the terminal blocks (through the side opening of the connector) and you are good to go!

Just get the little ones, e.g 4 of 2 positions or 2 of 3 postions and 1 of 2 positions. They slide together very well by design and you would'nt notice they were joined. On the image of that forum I linked to, he's got 4 of 2 positions too .... you can see the joins if you look closely.
Be careful to get from reputable retailers though ... cpc and digikey are good, even rs components

Good, what's the part number?
Also, what do you mean by terminal module? Do you mean the green contacts on the board here: https://bitcointalk.org/index.php?topic=929875
Those are TERMINAL BLOCK 32A 6.35MM - http://cpc.farnell.com/jsp/search/productdetail.jsp?SKU=CN11186 (not sure digikey does them .... I searched there a while back and could not find any ... may have changed though), but they also come in different pitches.

PS. those are 3 in a block, not sure how many power terminals your PSU has, but those blocks also come in 6 (I think that is the max ... may be more), but they are very easy to string together if you have odd numbers.

If you've got the PSU handy, look on digikey, they have them .... search for connectors, or something similar to 6 power 24 data connectors  (as in the case of the one above). Be warned, some of these connectors have a high MOQ ...

EDIT: Look at this search http://www.digikey.com/product-search/en/connectors-interconnects/backplane-connectors-specialized/1442882

and apply filters on Contact Layout, Typical, i.e choose the number of data and power from that selection.

On a closer look, yep looks like 950W .... so that would run an S5 OK ... switcing on "should" be the same ....

That looks like a Dell PS-2521 clone - your image is not lear, but if that is a 550W supply, it can run an S5 at stock BUT it will die soon! If you have two of these, put one on each blade and OC to your heart's content, else you'll have to underclock.

Here's how to switch it on


First 3 power blades on right are +ve, the other 3 are -ve

Oh, just shut it! If there is no mention of ducting, neither is there of windows or doors, but that did not stop you mentioning them, did it now?

In any case, what sort of windows and doors do you have on your house that will refuse to let vertically exhausted heat out? Do you live in a gnome house, have floor vents for windows & trap doors for access or is your house built atop a black hole where the natural laws of physics, aka heat rising, do not apply?


Spot on there @kreativling

I actually looked at that but, as you correctly point out, since it did not have the exact model number, I discounted it .... seems correct though.

..... laser tachometer ... I hate giving negative answers, but, no I don't have one. On a positive note though, yes you are right by implication that I do not get any RPM readings on either of the rigs I run the TA500DC fans on (could not get one connecting the orange or other wire ... must be something I did wrong!)

Just looked at the directory of the datasheets and it seems there is no datasheet for the TA500DC .... probably these were made on order for Compaq only?! The only ones I've ever seen are all branded with the Compaq tag ..... so that may be the case.

Datasheet directory link: http://www.nidecpg.com/fanpdfs/ (from your link above).

But hey, you can pick this fan up for ~ $5 + shipping and the resistor for the mod is ~ $1 ...... who needs a datasheet?

Sorry, do not have the datasheet.
The exact model I am running is AX34538-90 as read from the sticker (and I believe that is the same in the link I gave), and it is definitely NOT a 38mm form-factor .... more like a 50mm one.
I am popping out for a while to pick my kids from school but will look again when I get back and update you.

You read that wrong, I was suggesting that the replacement TFC would be louder because it is the same form-factor (38mm) and spins faster at 5000 rpm. I am not sure the TFC has longer blades, infact, that would be a surprise if it did, however, the Nidec fan is (I think) a 50mm form factor and the fan blades are deeper. Bear in mind that the TFC and stock fan blades are a lot shorter than the 38mm form-factor suggests due to the "spoilers" that focus air pressure, however on the Nidec, aside from the guard, the rest of the space is occupied by the blade(s).

On the Nidec fans, I've got fantastic results on both the S1 and S3 (but not run it yet on the S5). I am more than sure it will yield good results as the amount of air it moves is better than a stock S3 fan running at full pelt (not scientific but observational) with the above mod. Physically, you do not have to hack it to get it to fit as it sits nicely inside the brace. Its case holes just do not match those on the S5, but I attach them using double sided tape on the rigs I run it on.
PS. Like I said, strictly speaking its not a 120mm fan, more like a 125mm fan (but it could also be a 122mm .... not sure)

Tell me about it!
And what exactly is that which you can do with horizontal airflow that you can not do with vertical airflow in a non data-centre setting? I'll, for the umpteenth time, put it down to dogie-waffle.