I have a few of both 4pin molex and 6pin pcie. ver006, ver007, and even some ver001s.
Have had no problems with any so far. Been mining for 6 months now 24/7.
I guess go with whichever is cheaper and available. If all are available id go for the ones with more capacitors.
Topic: 6pin vs 4pin psie riser (Read 2405 times)
Yea I bought 4 pin molex and 6 pin just to be on the safe side I bought a bunch extra (I don't see myself not building more rigs as time goes on anyway) So thanks for clarifying I will try both of them out on the different rigs I'm building... Also I already have purchased all my cards about 2 - 3 weeks ago just waiting on my PSU's and PCIE's
The best risers have a voltage regulator to ensure the voltage to the card doesn't spike. AFAIK, the only risers that have a voltage regulator are the 6-pin risers, which also use four capacitors for a more stable current flow compared to the three used by SATA or 4-pin molex risers. I use a dual PSU setup with all of the risers powered by the same PSU that powers the motherboard. The total draw for the risers and motherboard for five RX 480/580, RX 470 and one Nvidia 1080 is 360 W, so the risers are using between 45 -50 W each for the six card rig.
How is that possible?
The RX series have a 8 pin pcie connector which can deliver 150W, how can your risers burn an additional 50W.
Are you running the cards at 200W?
Btw, if risers would realy burn 50W, that would mean 300W for a 6GPU rig, which would probably burn/kill the wires or even the PSU, as PSU's dont have 300W capability on Sata/Molex rails....
I have a dual PSU setup and use EVGA P2 PSU's that have a single 12V rail and can deliver >99% of the rated power over the 12V line. The best PSU's for multi-psu rigs are dual conversion PSU's that convert the entire energy into a 12V single rail and then uses VRM to generate 5V and 3.3V. The cheaper PSU type converts using different taps in the transformer for each voltage and use the 5V line to regulate the voltage, instead of the 12V line like the dual conversion models. That causes voltage instability from not loading 5V line. The EVGA G2 and P2 series 650W and up are dual conversion models.
I use a EVGA P2 1000W with 6 PCI-E connectors for the VGA power inputs only. The total draw for 6 cards is 670 W dual mining. The main PSU that powers the motherboard, risers and SSD is a EVGA P2 750W and uses 360 W. I power the 6 PCI-E risers using four PCI-E connectors and two 6-pin pigtails.
The best risers have a voltage regulator to ensure the voltage to the card doesn't spike. AFAIK, the only risers that have a voltage regulator are the 6-pin risers, which also use four capacitors for a more stable current flow compared to the three used by SATA or 4-pin molex risers. I use a dual PSU setup with all of the risers powered by the same PSU that powers the motherboard. The total draw for the risers and motherboard for five RX 480/580, RX 470 and one Nvidia 1080 is 360 W, so the risers are using between 45 -50 W each for the six card rig.
How is that possible?
The RX series have a 8 pin pcie connector which can deliver 150W, how can your risers burn an additional 50W.
Are you running the cards at 200W?
Btw, if risers would realy burn 50W, that would mean 300W for a 6GPU rig, which would probably burn/kill the wires or even the PSU, as PSU's dont have 300W capability on Sata/Molex rails....
The best risers have a voltage regulator to ensure the voltage to the card doesn't spike. AFAIK, the only risers that have a voltage regulator are the 6-pin risers, which also use four capacitors for a more stable current flow compared to the three used by SATA or 4-pin molex risers. I use a dual PSU setup with all of the risers powered by the same PSU that powers the motherboard. The total draw for the risers and motherboard for five RX 480/580, RX 470 and one Nvidia 1080 is 360 W, so the risers are using between 45 -50 W each for the six card rig.
I'm assuming by 4 pin you mean a molex connector (there are many 4 pin connectors) and by the 6 pin you mean the 6 pin PCI-e power connector
Between the two, it doesn't matter, the PCI-e socket is designed to carry up to 75w
molex is rated for 132W, 6 pin pcie is rated for 75w so either works, all though, I recommend molex because otherwise you might not have enough pcie power connectors for the risers and the cards
there are also sata powered risers, SATA power connectors are only rated for 54w so I don't recommend those. They will work with most GPU's but not all, definitely not with the rx 400/500 series which are known for draining the pci-e slot pretty heavily.
Also, if you are just about to build the rigs, the party is kinda over man, cards bought now probably won't even make ROI.
Between the two, it doesn't matter, the PCI-e socket is designed to carry up to 75w
molex is rated for 132W, 6 pin pcie is rated for 75w so either works, all though, I recommend molex because otherwise you might not have enough pcie power connectors for the risers and the cards
there are also sata powered risers, SATA power connectors are only rated for 54w so I don't recommend those. They will work with most GPU's but not all, definitely not with the rx 400/500 series which are known for draining the pci-e slot pretty heavily.
Also, if you are just about to build the rigs, the party is kinda over man, cards bought now probably won't even make ROI.
The riser posted is not the best really. It will likely do the job. You want the 6 pin risers always so you can plug power from your PSU to the riser directly. You do not want to use the adaptor that came with it as the sata adapters have a limit on how much power they can provide. Safest way is directly power the riser from your PSU so the 6pin on the riser board is what you want.
That link post has a cheaper riser. You can get ones with 4 capacitors and 2 extra chips that provide power stability.
https://www.aliexpress.com/item/Updated-New-USB-3-0-PCI-E-Express-1x-Extender-Riser-Card-Adapter-SATA-6-PIN/32819031074.html
Note the 2 small chips next to the 4th capacitor?
Im not saying buy that exact link I sent. I am saying try to find ones that have 3 caps and those 2 extra links. Also check the soldering on the PCI-e adaptor. The one in my link is very clean.
The one in that link does not show any soldering so you don't know if it is a quality build or not.
That link post has a cheaper riser. You can get ones with 4 capacitors and 2 extra chips that provide power stability.
https://www.aliexpress.com/item/Updated-New-USB-3-0-PCI-E-Express-1x-Extender-Riser-Card-Adapter-SATA-6-PIN/32819031074.html
Note the 2 small chips next to the 4th capacitor?
Im not saying buy that exact link I sent. I am saying try to find ones that have 3 caps and those 2 extra links. Also check the soldering on the PCI-e adaptor. The one in my link is very clean.
The one in that link does not show any soldering so you don't know if it is a quality build or not.
Just go with those: http://mylifegadgets.com/USB30RISERS or do you mean like PCI-E power 4pin or 6pin?
So those are good to connect the gpus to the mobo?
And what is the difference of the pcie power (sorry im a newb dont wuite understand everything yet)
Just go with those: http://mylifegadgets.com/USB30RISERS or do you mean like PCI-E power 4pin or 6pin?
So I can't figure out whether I need a 6 pin or 4 pin pcie riser for the rigs Im setting up?
1 rig is 6 gtx1070s with an as rock h81 btc mobo and a 2x EVGA SuperNOVA 750 G2 220-G2-0750-XR 80+ GOLD 750W Fully Modular EVGA ECO Mode
https://www.newegg.com/Product/Product.aspx?Item=N82E16817438017
The other rig is going to be 8 gtx 1070s with an asus prime z270 a mobo with 2x EVGA SuperNOVA 850 G2 220-G2-0850-XR 80+ GOLD 850W Fully Modular EVGA ECO Mode
https://www.newegg.com/Product/Product.aspx?Item=N82E16817438018
So could anyone tell me whether I need to get 4pin or 6pin pcie risers?
Thank you
1 rig is 6 gtx1070s with an as rock h81 btc mobo and a 2x EVGA SuperNOVA 750 G2 220-G2-0750-XR 80+ GOLD 750W Fully Modular EVGA ECO Mode
https://www.newegg.com/Product/Product.aspx?Item=N82E16817438017
The other rig is going to be 8 gtx 1070s with an asus prime z270 a mobo with 2x EVGA SuperNOVA 850 G2 220-G2-0850-XR 80+ GOLD 850W Fully Modular EVGA ECO Mode
https://www.newegg.com/Product/Product.aspx?Item=N82E16817438018
So could anyone tell me whether I need to get 4pin or 6pin pcie risers?
Thank you
Jump to: