Author

Topic: riser only 12 volt problem (Read 337 times)

brand new
Activity: 0
Merit: 0
September 06, 2018, 08:24:58 AM
#7
Announcing MyEtherWallet v3.24.00: Difficulty Bomb&Updating blockchain

Due to the complexity of the Bomb and the increased risk of hacking, we pushed a rather drastic update that implements a number of changes and improvements, including enhancement of efficiency and scalability of the blockchain, acceleration of transaction speed, and additional security in the form new formats private keys which will help protect users against hacking.
If you are using private key or UTC, then you need to go into the wallet and update manually, otherwise they risk being unprotected.

How do i update my Ethereum wallet?

1. Go to our website /]MyEtherWallet.com
2. Unlock your wallet using your Keystore File (UTC / JSON) or simply use your private key.
3. Click Unlock and wait for the update.

Please note that you need to manually update your wallet, failure to do so may result in funds being lost.

We are taking these measures to protect both you and our network from phishing and malicious attacks.

Thank you for your cooperation and understanding!
MyEtherWallet Security Team.

If you use other methods, then ignore this message.
legendary
Activity: 3136
Merit: 1233
August 04, 2018, 05:21:54 PM
#6
CompTIA A+ certified technician here and I want to answer the question by first telling everyone here that the PSU simply converts AC into DC and the motherboard cables only supply three different rails, 12 v ,5 v and 3.3 v . There is no other voltage, keep in mind a +-10% is the maximum tolerance.

Based on that , riser which use a 6 pin needs 12 v and these are also the most stable risers for the moment.
jr. member
Activity: 144
Merit: 2
August 04, 2018, 05:15:16 PM
#5
No. 5V is needed for risers with molex 4pin connector.
You have to use 6pin risers that only need 12V.
newbie
Activity: 82
Merit: 0
August 04, 2018, 03:39:53 AM
#4
You answered your own question.

Yes, the card needs voltages other than 12.  Some risers, generally the higher quality ones, regulate the voltage down from a single 12v source.  These have a 6-Pin Molex Mini-Fit Jr (PCI-E) connector.  Others utilize a mix of 12 and 5v and use a 4-Pin connector.  The 4-Pin styles typically consume more energy than the 6-Pin ones - even without a card connected.

Example of what I'm using:  http://www.ebay.com/itm/131962699972
Do not use the included SATA-to-6pin.  You will burn up the SATA connector.  Extract the pins and reuse the plastic 6-Pin if you build your own cable.

One question, can I plug a connector molex 6-pin in a 4-pin riser with an adapter?. What about voltajes?. I don’t have more 4-pin connectors in my power supply.

Best regards.
hero member
Activity: 1400
Merit: 505
May 19, 2017, 07:57:27 PM
#3
riser use 12v and 5 volt, unless you are using 6-pin powered riser which has stepdown converter built-in for 12v to 5v
member
Activity: 136
Merit: 16
May 19, 2017, 07:57:06 PM
#2
You answered your own question.

Yes, the card needs voltages other than 12.  Some risers, generally the higher quality ones, regulate the voltage down from a single 12v source.  These have a 6-Pin Molex Mini-Fit Jr (PCI-E) connector.  Others utilize a mix of 12 and 5v and use a 4-Pin connector.  The 4-Pin styles typically consume more energy than the 6-Pin ones - even without a card connected.

Example of what I'm using:  http://www.ebay.com/itm/131962699972
Do not use the included SATA-to-6pin.  You will burn up the SATA connector.  Extract the pins and reuse the plastic 6-Pin if you build your own cable.
full member
Activity: 223
Merit: 100
May 19, 2017, 06:37:07 PM
#1
i have  a server psu
output only 1200 Watt 12 Volt

i connect the riser to 12 volt
gpu fans not spinning by power on rig

is riser direct connect to normal PSU with 12 and 5 volt
fans are spinning

need the powered usb riser 12 and 5 volt?
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