I've thought the same until after various fiddling with stupid n-by-x power connections of different form-factors of power/mobo/gpu - it's just some damn formula I never figured out. Last 2 mobo's and gpu's I've had to fiddle with both 6 or 8 pin to make work on my gpu/mobo, once it works I rather forget being few/far between and curse having to fiddle in the first place. YMMV here is all I'm declaring, either way it's quirky. Don't trust the motherboard power. Thank vendor wars. -mb On Wed, Jul 31, 2019 at 8:48 PM Harold Hartley wrote: > I’m starting to think that you may have a bad motherboard. > > On Wed, Jul 31, 2019, at 20:30, Michael Butash wrote: > > I've had issues trying to power a gpu and get display with the 6 vs. 8 pin > connector. Or both, just for functionality's sake. Need to figure out which > standard they want/prefer. AMD vs. Nvidia. > > One or the other, I've ended up with 1x of either as workable, not both, > not the wrong one (which ever that is), and then all tends to be right with > boot. > > It seemed always yet another amd vs nvidia thing which to connect, but > almost any time in the past 10 years I've need a psu that supported the 6/8 > pin power connector explicitly. Expect the pcie power to > fail/glitch/piss-you-off - use external power supply, and a beefy psu at > that for any/all that gpu of power. > > -mb > > > > On Wed, Jul 31, 2019 at 6:09 PM Adam Mercer wrote: > > On Tue, Jul 30, 2019 at 9:59 AM Stephen Partington > wrote: > > > > > The PCI-express spec has a limit on the power draw it can allow for a > GPU If it takes more than that it has extra power connectors. That might be > a good check. make sure you don't have a connector not connected on your > GPU. and/or try power on without a GPU connected. (if there is no video at > least you will get power up and beeps. > > > > Same behaviour with and without the GPU connected, i.e. nothing... The > > GPU has an 8 and 6 pin power connector and both were connected when I > > tried with it connected. > > > > Cheers > > > > Adam > > --------------------------------------------------- > > PLUG-discuss mailing list - PLUG-discuss@lists.phxlinux.org > > To subscribe, unsubscribe, or to change your mail settings: > > https://lists.phxlinux.org/mailman/listinfo/plug-discuss > --------------------------------------------------- > PLUG-discuss mailing list - PLUG-discuss@lists.phxlinux.org > To subscribe, unsubscribe, or to change your mail settings: > https://lists.phxlinux.org/mailman/listinfo/plug-discuss > > > -- > Harold Hartley > 17632 N. 5th place > Phoenix, AZ 85022 > wheelie207@ownmail.net > > > --------------------------------------------------- > PLUG-discuss mailing list - PLUG-discuss@lists.phxlinux.org > To subscribe, unsubscribe, or to change your mail settings: > https://lists.phxlinux.org/mailman/listinfo/plug-discuss