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Title: Possibility of using PSU 6pin to power a risers Post by: msallak1 on January 28, 2018, 08:39:05 PM Hey guys.
I have Fortress 750W PSU Platinum, and I am going to plug gtx 770 , x2 gtx 1050 directly in my motherboard pcie 3.0 , I also want to use 3 risers to connect x3 gtx 1030 . My question, is it possible to power two 6pin risers directly using the 6+2 pin cables that are connected to my PSU? and also power one 6 pin riser with my psu sata cable. My PSU has x4 6+2 pins and x8 sata cables. https://www.amazon.com/Rosewill-FORTRESS-Platinum-Certified-FORTRESS-750/dp/B008G9MX48/ https://images-na.ssl-images-amazon.com/images/I/81lQ6XAirBL._SL1500_.jpg https://images-na.ssl-images-amazon.com/images/I/81QCd30518L._SL1500_.jpg And I am planning to buy this riser : https://www.amazon.fr/Jsdoin-alimenté-Adaptateur-dalimentation-Pin-6Pin/dp/B078PZYYBC https://images-na.ssl-images-amazon.com/images/I/71O8YjUq2yL._SL1500_.jpg Thank you very much. Title: Re: Possibility of using PSU 6pin to power a risers Post by: Vann on January 28, 2018, 08:51:09 PM 6-pin PCI-E connectors are rated for 75 W max. Risers will typically use up to 60 W max, so you should be OK running two 6-pin risers from one PSU 8-pin PCI-E cable. I have run up to three 6-pin risers from the PSU cables that have a 8-pin + a 6-pin pigtail. I wouldn't go past three 6-pin risers per PSU cable.
If you run out of PCI-E connectors on your PSU, you can use a SATA to 6-pin converter, but I would not run more than one 6-pin riser per SATA cable. I would also rather use a dual SATA to 6-pin adapter to spread the load over two connectors on the same PSU SATA cable. https://www.aliexpress.com/item/PCI-E-Adapter-Cable-Dual-15-Pin-SATA-Power-To-6-Pin-PCI-E-PCI-Express/32840243382.html? Title: Re: Possibility of using PSU 6pin to power a risers Post by: msallak1 on January 28, 2018, 09:20:39 PM 6-pin PCI-E connectors are rated for 75 W max. Risers will typically use up to 60 W max, so you should be OK running two 6-pin risers from one PSU 8-pin PCI-E cable. I have run up to three 6-pin risers from the PSU cables that have a 8-pin + a 6-pin pigtail. I wouldn't go past three 6-pin risers per PSU cable. How can I spread the load if every sata cable that is coming out of my PSU has one female head. If you run out of PCI-E connectors on your PSU, you can use a SATA to 6-pin converter, but I would not run more than one 6-pin riser per SATA cable. I would also rather use a dual SATA to 6-pin adapter to spread the load over two connectors on the same PSU SATA cable. https://www.aliexpress.com/item/PCI-E-Adapter-Cable-Dual-15-Pin-SATA-Power-To-6-Pin-PCI-E-PCI-Express/32840243382.html? see picture : https://images-na.ssl-images-amazon.com/images/I/81QCd30518L._SL1500_.jpg What about molex to sata risers, are they reliable? Because I found some reliable dual sata to molex connectors : https://smile.amazon.co.uk/Cable-Matters%C2%AE-Molex-Y-Cable-Adapter/dp/B00VJ9V8NY/ Title: Re: Possibility of using PSU 6pin to power a risers Post by: Vann on January 28, 2018, 09:28:53 PM SATA connectors are rated for 54 W max, which is why I don't like using single SATA connectors with risers. As long as you're not dual mining, which pulls a lot more power through the risers, it may be OK to use a single SATA connector to power one riser. Check the connector every so often to make sure it's not getting hot.
Molex 4-pin connectors are a much better option than SATA connectors, but never use more than two risers connected to the same PSU molex cable. Title: Re: Possibility of using PSU 6pin to power a risers Post by: msallak1 on January 28, 2018, 09:33:18 PM I have 4 molex cables in my psu, so I will connect each to one riser.
What is power difference between sata and molex cables ? How much wattage molex cable can provide Title: Re: Possibility of using PSU 6pin to power a risers Post by: Vann on January 28, 2018, 09:44:37 PM Molex 4-pin connectors are rated up to 132 W each, but the problem is they almost never need to use anywhere near that power. PSU's typically use thinner gauge wire for molex and SATA cables compared to PCI-E cables, which are made to handle a high load. That's why you should never use more than two risers per SATA/Molex PSU cable, or you risk overloading the wire.
Title: Re: Possibility of using PSU 6pin to power a risers Post by: Set Ready Go on January 28, 2018, 10:21:13 PM Hey guys. I have Fortress 750W PSU Platinum, and I am going to plug gtx 770 , x2 gtx 1050 directly in my motherboard pcie 3.0 , I also want to use 3 risers to connect x3 gtx 1030 . My question, is it possible to power two 6pin risers directly using the 6+2 pin cables that are connected to my PSU? and also power one 6 pin riser with my psu sata cable. My PSU has x4 6+2 pins and x8 sata cables. https://www.amazon.com/Rosewill-FORTRESS-Platinum-Certified-FORTRESS-750/dp/B008G9MX48/ And I am planning to buy this riser : https://www.amazon.fr/Jsdoin-alimenté-Adaptateur-dalimentation-Pin-6Pin/dp/B078PZYYBC Thank you very much. https://imagescdn.tweaktown.com/content/5/3/5335_19_rosewill_fortress_750_watt_80_plus_platinum_power_supply_review.png So looking at this, you got 2 molex cables while 3x connectors on one of them and 1x connector on the second. https://img.purch.com/gigabyte-geforce-gt-1030/o/aHR0cDovL21lZGlhLmJlc3RvZm1pY3JvLmNvbS9RLzcvNjkwNDE1L29yaWdpbmFsLzAwLVdhdHRhZ2UtT3ZlcnZpZXcucG5n Second picture here of GT1030 that you will put on your risers, maxed out at 33 watts . So i think you are good to go. The only thing that i think might be trouble for you can be the pcie lanes for you on the motherboard. Title: Re: Possibility of using PSU 6pin to power a risers Post by: msallak1 on February 02, 2018, 08:41:30 AM Thank you guys for advice.
I actually changed my plan. I am thinking about not using risers, so I will just plug in my gtx 770 and two gtx 1050s directly into my motherboard. My only concern now is that I cannot supply gtx 1050 with power from my psu 6/8 pin connectors. Will my motherboard be able to provide the x2 75W (150W total) via the x16 pcie slots for my two gtx 1050s ? Title: Re: Possibility of using PSU 6pin to power a risers Post by: Hudo_zg on February 02, 2018, 09:23:18 AM Thank you guys for advice. I actually changed my plan. I am thinking about not using risers, so I will just plug in my gtx 770 and two gtx 1050s directly into my motherboard. My only concern now is that I cannot supply gtx 1050 with power from my psu 6/8 pin connectors. Will my motherboard be able to provide the x2 75W (150W total) via the x16 pcie slots for my two gtx 1050s ? what motherboard do you have? Title: Re: Possibility of using PSU 6pin to power a risers Post by: msallak1 on February 02, 2018, 09:31:16 AM Thank you guys for advice. I actually changed my plan. I am thinking about not using risers, so I will just plug in my gtx 770 and two gtx 1050s directly into my motherboard. My only concern now is that I cannot supply gtx 1050 with power from my psu 6/8 pin connectors. Will my motherboard be able to provide the x2 75W (150W total) via the x16 pcie slots for my two gtx 1050s ? what motherboard do you have? http://www.pcgameware.co.uk/images/MSI-Z87-G45-GAMING-Motherboard-bottom.jpg Title: Re: Possibility of using PSU 6pin to power a risers Post by: msallak1 on February 03, 2018, 01:08:35 PM Can someone help me please :'(
Title: Re: Possibility of using PSU 6pin to power a risers Post by: giveen1 on February 03, 2018, 01:15:27 PM Can someone help me please :'( yes, its fine. I run two 1050TI's straight from my motherboard. Title: Re: Possibility of using PSU 6pin to power a risers Post by: msallak1 on February 03, 2018, 01:19:01 PM Can someone help me please :'( yes, its fine. I run two 1050TI's straight from my motherboard. Title: Re: Possibility of using PSU 6pin to power a risers Post by: giveen1 on February 03, 2018, 01:22:25 PM Can someone help me please :'( yes, its fine. I run two 1050TI's straight from my motherboard. It provides up to 75W, diff between v2 and v3 is just bandwidth. Your fine. My motherboard is an older motherboard (AM3+), and its PCI-E2 and its running 2x Zotac 1050 TI Title: Re: Possibility of using PSU 6pin to power a risers Post by: msallak1 on February 03, 2018, 01:35:39 PM Can someone help me please :'( yes, its fine. I run two 1050TI's straight from my motherboard. It provides up to 75W, diff between v2 and v3 is just bandwidth. Your fine. My motherboard is an older motherboard (AM3+), and its PCI-E2 and its running 2x Zotac 1050 TI |
