More resistance = more heat = more melting. The connector will melt.Īny time you add adapters you're adding extra resistance to the circuit with additional cable length and extra connectors. The smaller connector pins really are not designed for high current applications such as graphics cards. SATA power connectors also only have a single 12V cable, but the connector itself is rated for lower current. You'll overload the cable and end up with it melting. Even if you use two molex connectors to adapt to a PCIe connector they're still coming off the same cable and connector.

4 pin molex peripheral connectors only have a single 12V connector. Can I plug all 3 Arctic fans to a single 3 pin connector on the mobo? Can I use a male Sata to 6 pin connector to power an 8+6 pin GPU?ģ. Can I use a 2x Molex to 8 pin connector to power the GPU?Ģ. at 78% efficiency, if the power supply actually gives 300w to components, that's 78% of how much it takes from mains. The only things that use 5v these days are some onboard stuff (Chipset, network card, audio) and hard drives, so maybe 10-20 watts.Īlso. the label would make you think you have 3.3 x 30=99w + 5v x 30a = 249 watts on 3.3v and 5v which is a lie, most likely maximum 100-120 watts are possible on those voltages.īut. in theory, in practice like i said, no guarantee both rails can do maximum at the same time.Īlso, if you open it up and ask an expert, it's probably 90% likely that there's something like a total of 100-120 watts 'budget', for 3.3v and 5v and each 3.3v and 5A are probably maximum 15-20A each, not 30A. How about using a 3 fan to molex/sata then?Īgain, look at the actual specifications and not the product name or what they advertise : However, Ive read that the 3 pin motherboard connector usually supports 12v - 1A and as long as the combined fans dont add up to 1A is fine to use splitter (would be about 0.25A combined). That would solve the issue with the adapters. Would that be safe to use or should I go for a well known brand 500w-550w PSU like Corsair or Evga? I've seen a few Tooq Ecopower II 700w-750w quite cheap, but it doesn't have an 80plus rating.

It looks like I would algo need to get a PSU.

Molex 8 pin connector