System building trouble

[Michael Butash]

Motherboards are intuitive, until they're not.  Then they're just
annoying/bug-ridden.

Most motherboard and bios activity is around hardware function.which
usually exists or doesn't toward whatever gpu or other high-speed device,
like a 100gbe network interface you inserted there.

Throw in some unexpected gpu(s), it'll crap out.  Throw in some 40-400
gigabit ethernet nics, they do the same.  They dare you to use the full
pcie bus.

-mb





On Wed, Jul 31, 2019 at 9:04 PM Harold Hartley <wheelie207 at ownmail.net>
wrote:

> When I’ve bought motherboards before, the manual are no help at all. I end
> up searching the web.
>
> On Wed, Jul 31, 2019, at 20:57, Michael Butash wrote:
>
> 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 <wheelie207 at ownmail.net>
> 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 <ramercer at gmail.com> wrote:
> >> > On Tue, Jul 30, 2019 at 9:59 AM Stephen Partington <
> cryptworks at gmail.com> 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
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> > --
> >  Harold Hartley
> >  17632 N. 5th place
> >  Phoenix, AZ 85022
> > wheelie207 at ownmail.net
> >
> >
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>
> --
>   Harold Hartley
>   17632 N. 5th place
>   Phoenix, AZ 85022
>   wheelie207 at ownmail.net
>
>
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