ASrock h81 pro btc problem whit gpu5

[slejvi]

Hello
i have build small rig whit 5 x msi gtx 1060  6g  i have H81 mb  but problem is that i cant get 5gpu online it has  power i have powered risers  any idea, the 5th gpu is powered from molex its my be tihs a problem , the ps is modular but has only 4 gpu connector , and 5th card i have powered from molex they go on 6 pin connector at end, the gpu has power cos fans are running on her.
mb h81 pro btc
gpus msi gtx 1060 6G
cp celerom
PS chieftec 1000w
ELEGIANT PCI-E Express 1x to 16x Extender Riser Board Card Adapter Riser Karte USB 3.0 Kabel mit SATA  you can chek on amazone

Gpu is not dead cos i have placed in other rig and she runs , i have change in bios all to gen1, 2 or auto its the same  tested other riser if the first was dead no he is working.

4 gpus are running prefect at 301 to 309 pro card all together 1214 Sol/s
4 gpus take like 550w -+ 50w whit monitor and system at the moment

I dont see the gpu in windows only 4 gpus

sorry for my bad English.

tnx  

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[slejvi]

4 gpus take like 550w -+ 50w whit monitor and system at the moment

[matmator]

gpu error code 43 ?

[slejvi]

i dont get any error i dont see the gpu in device manager only 4 and not 5

[usamamalik555]

which oprating system you have installed on rig ?

[m1n1ngP4d4w4n]

Have you tried to power the 4th gpu with molex and the 5th with the normal VGA power cable, or/and switch risers (maybe a bad one is happens)

[isoneguy]

the ps is modular but has only 4 gpu connector , and 5th card i have powered from molex they go on 6 pin connector at end

This is your problem

A 6 pin pci-e line can throw up to 300 watts at 12v

a 5 pin molex can only throw 5v which is a huge difference.

buy a different psu...don't use molex splitters/converters.

If you have to, use an add2psu connector.

[slejvi]

the ps is modular but has only 4 gpu connector , and 5th card i have powered from molex they go on 6 pin connector at end

This is your problem

A 6 pin pci-e line can throw up to 300 watts at 12v

a 5 pin molex can only throw 5v which is a huge difference.

buy a different psu...don't use molex splitters/converters.

If you have to, use an add2psu connector.

then from that connector from psu  what you can connect  hhd, dvd (molex)... you cant run gpus ?   like this

[isoneguy]

You need 12volts,

pcie is 12 volts... molex is 5 volts.

A pci-e splitter(pcie to 2x pcie) might work...but I highly suggest getting a psu with the proper connectors.

[slejvi]

You need 12volts,

pcie is 12 volts... molex is 5 volts.

A pci-e splitter(pcie to 2x pcie) might work...but I highly suggest getting a psu with the proper connectors.

ok tnx any ps that is ok for 6 gpus and normal price  chieftec has 1250 w  for 188 euros that the cheapest what i now that arent so bad. (and iam EU not USA) so no eggs pls;)

[isoneguy]

If you have 2 psu's you can connect them with one of these "add2psu" connectors:


Just make sure not to use 2 different psu's on the same gpu.

I suggest using only 1 psu per rig unless you know what you're doing though.

Not that anyone truly knows what they're doing.

[slejvi]

If you have 2 psu's you can connect them with one of these "add2psu" connectors:
https://i.imgur.com/z7aXi8d.jpg

Just make sure not to use 2 different psu's on the same gpu.

I suggest using only 1 psu per rig unless you know what you're doing though.

Not that anyone truly knows what they're doing.

nah if psu is problem i will buy new one whit 6 connectors for gpu  cos i want to add 2 more gpus on my rig so. tnx any way

[ecohash]

I see here psu specialists. Molex is 4 pin connector.

You have ~12V yellow cable
GND 2 black ones
1 red with ~5 V

And betwen yellow and red is ~7V

But problem with molex is that have always small cross section.

Or you need other psu or you can try to make custom cables like that:

I am using this in one card (bought psu with not enought 6/8pin pcie cables)

3/4 molex -> 6/8 PCIE connector. And remeber, all molex must have another line, not 1 cable with 3 molex and connected to card <- this still be 1 cable.

I have super flower leadex 1600w GOLD 93+% ef. Have enought cables to use 6 PIN risers and power cards

[slejvi]

I see here psu specialists. Molex is 4 pin connector.

You have ~12V yellow cable
GND 2 black ones
1 red with ~5 V

And betwen yellow and red is ~7V

But problem with molex is that have always small cross section.

Or you need other psu or you can try to make custom cables like that:

I am using this in one card (bought psu with not enought 6/8pin pcie cables)

3/4 molex -> 6/8 PCIE connector. And remeber, all molex must have another line, not 1 cable with 3 molex and connected to card <- this still be 1 cable.

I have super flower leadex 1600w GOLD 93+% ef. Have enought cables to use 6 PIN risers and power cards

i have one of this bit like is see he is missing on +12v dc  and one gnd then it has to be this that my gpu is not running
http://www.ebay.com.au/itm/GIGABYTE-2-x-Molex-to-8-Pin-Power-12CF1-1PW013-11R-Molex-to-VGA-Power-Cable-/281517349096

then i need this one
http://www.kleinspul.nl/index.php?productID=1819

if iam correct ?

[chup]

i have one of this bit like is see he is missing on +12v dc  and one gnd then it has to be this that my gpu is not running
http://www.ebay.com.au/itm/GIGABYTE-2-x-Molex-to-8-Pin-Power-12CF1-1PW013-11R-Molex-to-VGA-Power-Cable-/281517349096

then i need this one
http://www.kleinspul.nl/index.php?productID=1819

if iam correct ?

AFAIK any molex->PCIe 8-pin power adapter will work. I would also choose second one.

[isoneguy]

AFAIK any molex->PCIe 8-pin power adapter will work. I would also choose second one.

It's not always enough

If  you run 6 cards on these without any standard pci-e lines then you're asking for your house to burn down.

[toptek]

or try one of these

http://www.ebay.com/itm/401195513882?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

I have the same Mother board and no issue yet with four or five cards after i started using the above raiser i had a few RC burn out ..  .. The new ones  seem a lot safer to use .. the parts look and fell better built .

here is some one that sells them in the US if you can't wait all most three weeks from China.


http://www.ebay.com/itm/311763730183?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT


I bought from both Sellers it is the same card from either, one takes longer to get, cost less, while it only takes a few day for the one in the US  it does cost more with Free shipping ..

[ecohash]

I see here psu specialists. Molex is 4 pin connector.

You have ~12V yellow cable
GND 2 black ones
1 red with ~5 V

And betwen yellow and red is ~7V

But problem with molex is that have always small cross section.

Or you need other psu or you can try to make custom cables like that:

I am using this in one card (bought psu with not enought 6/8pin pcie cables)

3/4 molex -> 6/8 PCIE connector. And remeber, all molex must have another line, not 1 cable with 3 molex and connected to card <- this still be 1 cable.

I have super flower leadex 1600w GOLD 93+% ef. Have enought cables to use 6 PIN risers and power cards

i have one of this bit like is see he is missing on +12v dc  and one gnd then it has to be this that my gpu is not running
http://www.ebay.com.au/itm/GIGABYTE-2-x-Molex-to-8-Pin-Power-12CF1-1PW013-11R-Molex-to-VGA-Power-Cable-/281517349096

then i need this one
http://www.kleinspul.nl/index.php?productID=1819

if iam correct ?

As you can see this is good cable, but is better to have more 12V cables then GND. In molex allways 2 midle cables are GND. Right one (90 deggres at bottom), is 12V (should be yellow). Good if you have litle skills and can make this cable alone. Buy PCIE 6/8 PIN female connector, 1-2 m good cooper cable, and 2-3 molex and both pins. In my country all cost less then 1 molex -> PCIE connector, and i have guarantees, that i have very good cables that are not hot after 10 min of mining.

[slejvi]

I see here psu specialists. Molex is 4 pin connector.

You have ~12V yellow cable
GND 2 black ones
1 red with ~5 V

And betwen yellow and red is ~7V

But problem with molex is that have always small cross section.

Or you need other psu or you can try to make custom cables like that:

I am using this in one card (bought psu with not enought 6/8pin pcie cables)

3/4 molex -> 6/8 PCIE connector. And remeber, all molex must have another line, not 1 cable with 3 molex and connected to card <- this still be 1 cable.

I have super flower leadex 1600w GOLD 93+% ef. Have enought cables to use 6 PIN risers and power cards

i have one of this bit like is see he is missing on +12v dc  and one gnd then it has to be this that my gpu is not running
http://www.ebay.com.au/itm/GIGABYTE-2-x-Molex-to-8-Pin-Power-12CF1-1PW013-11R-Molex-to-VGA-Power-Cable-/281517349096

then i need this one
http://www.kleinspul.nl/index.php?productID=1819

if iam correct ?

As you can see this is good cable, but is better to have more 12V cables then GND. In molex allways 2 midle cables are GND. Right one (90 deggres at bottom), is 12V (should be yellow). Good if you have litle skills and can make this cable alone. Buy PCIE 6/8 PIN female connector, 1-2 m good cooper cable, and 2-3 molex and both pins. In my country all cost less then 1 molex -> PCIE connector, and i have guarantees, that i have very good cables that are not hot after 10 min of mining.

tnx for all infos but i have bought new psu  and it work prfect now and i can add the 6 gpu in my sistem