btcgarden-AM-v1 down to $0.53/GHs. In stock for international selling!

[jimmothy]

Why are you using molex instead of pci-e?

I beleive molex is rated to around 100W max but you need about 150w to power each blade.

[CrazyGuy]

What gauge are you using on those molex adapters? Are you powering a single blade off of 1 12v line being split into multiple molex adapters?

Each blade is going to draw around 110 watts so I don't think 1x12v on a 4 pin adapter would do it. 6 pin pcie is going to have 3x12v lines, so best to find a 18 AWG 6 pin, or use 3x 18 AWG 4 pin molex adapters, not split from 1 line.

[madsusies]

CrazyGuy - Yes, I used 4 molex adapter and 2 molex branches .

jimmothy - Besause my i-tec Ultimate Gamer 900W Advance PSU, stops immediately after few second on PCI-e (do not know why, but the same thing happened when I plug the PCI-e in KNC board), I do not understand what's the matter

[CrazyGuy]

https://i.imgur.com/wCPr5ful.jpg
CrazyGuy - Yes, I used 4 molex adapter and 2 molex branches .

jimmothy - Besause my i-tec Ultimate Gamer 900W Advance PSU, stops immediately after few second on PCI-e (do not know why, but the same thing happened when I plug the PCI-e in KNC board), I do not understand what's the matter

I can't tell for sure from your first pic, but it looks like the molex adapters are split from a single small gauge 12v line going to your PSU. If that's the case, it's not going to cut it. You may be able to get away with using 2 seperate molex connectors, but not with that PSU.

[xtoff]

Find warning on the web

Mise en garde
Attention toutefois :
L'utilisation de ces adaptateurs est déconseillée et suppose que l'alimentation soit de bonne qualité et surtout d'une puissance suffisante pour pouvoir alimenter une carte graphique de dernière génération. Rien ne vaut une alimentation conçue dès le départ pour cela et dotée à l'origine des connecteurs adéquats. En cas de doute, l'échange est préférable, car les risques encourus avec une alimentation de mauvaise qualité et qui claque ne sont pas neutres. Il est vrai qu'ils peuvent entrainer des dommages irrémédiables à l'ordinateur et à ses composants, ainsi qu'un risque d'incendie dans les cas les plus graves.
Demandez conseil à un spécialiste.

Traduction en anglais (english)
Warning
Attention however:
The use of these adapters is disadvised and supposes that the supply is good quality and especially of a sufficient power to be able to feed a graphics board of last generation. Nothing is worth a supply conceived from the beginning for it and endowed at the origin of the adequate connectors. In case of doubt, the exchange is preferable, because the risks incurred with a poor quality supply and which clicks are not neutral. It is true that they can entrainer irreparable damage in the computer and in its components, as well as fire risk in the gravest cases.
Ask advice from a specialist.

[CrazyGuy]

I wouldn't endorse using a 6pin pcie to 2x 4pin molex splitter, but it probably would be fine if both molex adapters were coming from a separate cable. I used to power ASICMiner Blades at 70 watts on a single 4 pin molex adapter. In madsusies case, he's using 2 molex adapters on the same cable. It's no different than taking that one line going to the PSU and plugging it directly into one of the green connectors. You are powering each blade with 1/3 of the recommended current medium.

A 3x 4pin molex to 6pin PCIe adapter would be optimal, but I'm not sure if they make those. At that point you might as well just get a PSU that supports 6 pin pcie.

[madsusies]

What about this adapter ?

Why they do not send " sets of 6 pin to 2 pin converter"  ?

[xtoff]

I don't know this trade mark I-Tec but I found it on the web and the price is very low. I'm not sure that's a good PSU.
I prefer invest in a good one like  "Alimentation PC Corsair CS750 Series Modulaire - 750W"

http://prntscr.com/435wxr

@Madsusies I think the problem is the PSU not the adapter, be carefull to continue to use it

[btcgarden_miner]

Hi everyone,
BTCGarden have a minor change on BTCGarden-AM-V1. Miner of our new batch will contain 4 boards fix in one case.
We will sell only two kind of hash rate. 616GH/s and 1.2TH/s. These have been update on our website www.btcgarden.com.
$520 for 1 miner (4 boards) with 1 Rpi. 616GH/s. $0.85/GHs. 648W.
$1020 for 2 miners (8 boards) with 1 Rpi. 1.2TH/s. $0.85/GHs. 1296W.
New batch will come with black and blue boards. We will ship randomly in colors. They work the same.

Pictures of new batch:

[CrazyGuy]

What about this adapter ?
http://www.apevia.com/images/products/CVTEPCI12-1_500.jpg
Why they do not send " sets of 6 pin to 2 pin converter"  ?

I wouldn't recommend it. That's only marginally better than what you are doing now. Every time you split a cable, you are putting twice the load on the original cable.

[madsusies]

Thanks, but I still don't get why the 900W on 2 PCIe, for 2 boards, stops working after 1 minute, even when I change settings and click "Save" it stops the power supply immediately not mentioned, I do see in setup just setting for 3 pools instead 4

[xtoff]

Sorry to say that but I think that's not a good PSU.
Invest in a new one because miners running all the day you may have fire in your house if your PSU is dangerous.
Safety first, ROI second

[xtoff]

@btcgarden

Great job, euh with my order today  # is: 100000042 which one will you ship the older or the newer case all in one case ?

[btcgarden_miner]

@btcgarden

Great job, euh with my order today  # is: 100000042 which one will you ship the older or the newer case all in one case ?

Maybe the newer one. But can't be certain.

[xtoff]

Ok That 's not very important  

I hope that you have new more successful miners in the study and that we are soon going to discover it

[Biffa]

Thanks, but I still don't get why the 900W on 2 PCIe, for 2 boards, stops working after 1 minute, even when I change settings and click "Save" it stops the power supply immediately not mentioned, I do see in setup just setting for 3 pools instead 4

Don't cut corners and buy cheap PSU's, your problem is purely that your PSU is crap.

[madsusies]

Thanks, but I still don't get why the 900W on 2 PCIe, for 2 boards, stops working after 1 minute, even when I change settings and click "Save" it stops the power supply immediately not mentioned, I do see in setup just setting for 3 pools instead 4

Don't cut corners and buy cheap PSU's, your problem is purely that your PSU is crap.

I do not think in China they use better "crap"

http://www.i-tec-europe.eu/?t=3&v=245

[tarmi]

like the new bigger 4 blades.

unfortunately, I am going on vacation in a week, so I will order once I come back.

[btcgarden_miner]

like the new bigger 4 blades.

unfortunately, I am going on vacation in a week, so I will order once I come back.

Thank you! Have a nice vacation 

[klondike_bar]

CrazyGuy - Yes, I used 4 molex adapter and 2 molex branches .

jimmothy - Besause my i-tec Ultimate Gamer 900W Advance PSU, stops immediately after few second on PCI-e (do not know why, but the same thing happened when I plug the PCI-e in KNC board), I do not understand what's the matter

those splitters are absolute garbage. Ive seen too many where the '18awg' actually has far thinner wire cores.

This is what happens when you use adapters with thin wires unable to carry a load. notice this is an 8pin ATX to 6pin PCIe adapter that burnt up under 200w load, probably only a 22awg wire at best. it even melted into a nearby fan wire. If i didnt see the fire break out it may have ended badly.



The facts should be obvious:
1) PCIe has 3x 12V wires, each safe for about 50W on cheaper wiring. When you use the 2x molex splitters you only get 2x 12v wires, with additional cable length to create resistance and voltage drop.
2) if you connect multiple molex splitters onto the same molex daisy chain you will be putting the COMBINED power through a single 12V molex wire, and almost surely burn it.
3) buy a PSU with enough connectors, or use quality 6-pin PCIe splitters.

I sell 6" PCIe splitters like in my photo that are 18awg and that i have tested to be capable of powering 130W per arm (260W at the female end) without any thermal concerns. Check my signature if interested, because those molex ones are CRAP - DO NOT USE MOLEX SPLITTERS