Regarding RTX 3070, I think airflow is going to be a problem even it fits. Do it at your own risk and I am not taking any responsibility in such DIY cases. BattleBorn 6 Pin to 6+2 Pin PCI-E Cable - Use this cable to adapt your power supply's 6-pin pci connector into an 8-pin connector. Is it to power the fans or light? NEM 651/ Six Pin Plug. I would like to inquire if I can purchase and use LC-Power Power supply LC Power, Platinum Series 1200W (PSU) for the following existing PC, please. Now i have a single 8 pci-e pin in het psu and (750w) with 2 8 pci e pins in the graphic card. (Sorry for big link), Because as your explanation as i can get it, i can use normaly from power supply one 6pin (leaving the 2pin out) and another of 6+2 to the 8pin and it done. I have 750 W PSU and a 6 pin to 8 pin adaptor. PSU is 700W OCZ Mod XStream Pro. I think best way to do is by using two separate modular ports/cables (4 PCIe connectors in total) for RTX 3090 and two for RTX 2080 Ti to distribute the load evenly. The store’s technician I bought the PC from said that he tried my GPU to another machine and it didn’t work! Is this right way to connect them? My biggest concern is the compatibility with the In Win PSU. I’m wondering if it will cause any problems having only one 8-pin connector at the other end plugging into the PSU. I suggest you to get a better budget PSU like Corsair CX550 or EVGA 550 B5. Is that very slow download that starts by exec’ing the .run file normal? Check this pin-out for 6-pin PCI-E cable/connector https://imgur.com/a/R8OhQ. The PSU is 600W and only has 6pins connectors. Can’t really say but it could be for fans, light, stability or for other components too. X570 TUF GAMING PLUS WIFI It’s in a HP Pavilion with a i7 2600s CPU 8 gigs of RAM. Can I put this or I should buy dual molex to 8pin for supporting gpu up to 375 watts ? What PSU do you have? Hoping this provides clarity! I think that the power should be like the speed which of you have an adapter then the speed of adapter is limited from the input port (or the output if it is lower) for example a pci-e x1 (ver. StarTech PCI Express 6 pin to 8 pin Power Adapter Cable (PCIEX68ADAP) Oh, on your other question..... those two 6 pin cables you have available can be used together or separate. I also found a cable that has an 8-pin PSU end going to 2 x 8-pin pcie ends that is listed okay for my PSU, but that would be drawing all power from only one of the ports of the PSU. My setup: The smi utility says it can’t communicate with the gfx card. IDCOOLING AURAFLOW x 240 SNOW If I buy a Modular Power Supply that comes with original cables (6)+(8) that means the power supply and the cables are ready for it. Quite possible. I have a Corsair 600 watt power supply which I feel should be enough. Your dual 4-pin molex to 8-pin cable looks fine but remember to use separate 4-pin molex connector for each 4-pin molex input on the 8-pin PCI-E adapter otherwise you can overload the single rail and this can cause damage to the PSU or your card. ….and I don’t know if I understood correctly but this schema https://i.imgur.com/Dv9738Z.png (which you posted earlier in comments) says in general that 6pin and 8 pin are the same – both have 3 current wires, sense A and B can be ommited, and only difference is in one additional grounding pin). Shop PCI-E 6 Pin to Dual 8(6+2) Pin Splitter Power Cable, 6 Pin Female to 2X 8(6+2) Pin Male GPU Adapter Connector Extender Cable for Graphics Video Card, Mining Rig - 18AWG 8inch (2 Pack). I strongly advice against using SATA to 6/8-pin PCIe connector because it does not carry enough current and their wires are also on the thinner side. But why ? I bought gigabyte radeon rx 570 which has 8 pin connector and tpd 120w. I have the Corsair TX650M V2 PSU and unfortunately I have lost the PCI-E cables they were in the package. I’m also puzzled about the existing cable connectors at the PSU having only 6 wires each. I’m trying to figure out if I can put 2 GTX 1070ti with a 6 to 8 pin connector for each card (1070ti have a max power of 180W). The GTX 980ti Classified has 2 x 8-pin ports and a “TDP” 250W according to this: I need to update the graphics card and I grabbed a Radeon RX 5700 (no overclocking). 2. What OS are you using? Can I connect it directly to the card as I noticed it fits very nicely into the six slots to the right. Thanks. J&D 6 Pin to 8 Pin PCIe Express (PCIe) Graphics Video Card Power Cable Adapter (2 Pack), 4 inch / 10 cm, Black. Well this is strange because it works 99% of the time. Correct. Will a single 6 pin to 8 pin adapter work? Better to use 2x4pin molex to 8pin PCIe and it will work fine. Unfortunately, there are only 2 x 6pin PCIe cables present for powering a gaming GPU, which, I presume, limits the system to a model rated 225W maximum. Connect the 8-pin PCIe cable to the GPU port on the PSU and then connect the 8-pin PCIe connectors to your card. The Dell spec sheet says “Support for two PCI Express® x16 Gen 2 or Gen 3 graphics cards up to 300W (total for graphics)”. I am waiting on POINT OF VIEW to get back to me but meanwhile I am wondering if you have a solution. Thanks. So I understand the yellow are all require the 12V, does that mean I can put the top row of wires in any combination, because they are ground ? Ok, corsair I can buy Also, a GPU with higher power consumption will not affect your motherboard life and it is not going to draw 300W of power every-time, as it is the max power draw under extreme load, and I think your 600W Thermaltake PSU is enough for it. hay there im planing to buy DUAL-GTX1660TI-O6G The system will boot normally and runs but the graphics is very slow. I also have another card, a 2080ti. 6+2 pin PCIe connector is the same as 8-pin PCIe connector and should work. https://www.evga.com/products/product.aspx?pn=220-P2-1200-X1, So, in case of choosing two power Supplies that is something i probably prefer two, it comes other quetion. If it is a Dell Inspiron 3847 tower computer then you can use aftermarket standard ATX PSU without any issues. I have a 25″ 75hz Iiyama G-Master monitor that has Freesync, so should I stick with Radeon models? I’m using a MSI 970 Gaming motherboard with a Phenom II 970 Black Edition cpu. Would it be safe to get the 2nd required 8 PIN by sacrificing two SATA power cables? then in bios , there are 3 settings, (auto, GPU-PCI and Igpu intel) PSU sockets: http://imgur.com/a/IsgLX. My question is, will the 6-pin to-8 pin power connector generate enough power when I put one of my 6-pin cables in the 6-pin to 8-pin power connector. I think that the confidence you gave me that the parts where right and would work did it:-). The psu only has a 6 pin gpu power cable and a lot of sata power cable connectors, I’m using the at the moment the msi r7 370 with the 6 pin cable and I’m waiting for the msi rx 580 8gb to be delivered in the mail. Do I use that one cable and plug in the length of 6 and 8 Pin connectors? Akshat, I have a 300W PSU in my computer. I never thought of the dual 6-pin PCIe to 8-pin connector. I put forward the question to the group, and forgive me for my ignorance, but haven’t been able to find the answer. What PSU do you have? Not like there’d be 300W available at the dual end, right? My pc previously had AMD Radeon RX 570 and I just bought Rtx 2060 super to replace my graphic card. I have a bit of an odd PSU, a Dell with only a single 8-pin port (is that the word?) The recommended power supply for normal GTX 780 card is 600W and for GTX 1080 it is 500W. Thanks. My gpu is different than the build tutorial I used so I wasn’t sure if I did something wrong as I had to leave two prongs off of the second 8 piece connector to fit into the 6. GPU – XFX AMD Radeon™ RX 580 Double Dissipation 8GB GDDR5. Anyways, I will get the 6-pin to 8-pin adapter – will it supply the same amount of power as regular 8-pin. So, I have an optiplex 9020 (the one with the bigger tower) and it now has a 750W evga psu. What you think about EVGA 650W? My old arrangement had running into it one 6 pin labelled PCI the other 6 pin SLI. or just putting the 8pin connector is enough? I have two 6+2 cables coming from my power supply. I’d like to get some custom modded PSU cables for my build. If you buy a supply that only has 2 yellow wires on the 6 pin connector , take it back . Gigabyte AORUS Radeon RX 580 8G requires one 8-pin PCIe connector. Hello Akshat, I have a single rail Ultra LSP 650W and am trying to power a GTX 770 which requires one 8-pin and one 6-pin. Yes but it depends on the power supply to power supply. Is the adapter the same like to have 8pin & have the ability to give 150 watts ? The designed pattern with 3 locating pins ensures, that the adapter can only be connected in one way. Thanks for the reply…Could you please tell if this works? Upload on https://imgbb.com/ and share the link here.