PSU requirements for the x1950pro question.

I have a question about my psu driving my x1950pro. I have been reading
forums and have not found a satisfactory explanation so far.

First, the system: ASUS P5W DH Deluxe mobo | Intel C2D E6600 cup | 1Gx2
Corsair Twin2x2048-6400 ram | Antec Neohe 500wt psu | Sapphire x1950 pro gpu
| 250gig HD | 2 DVD's | Floppy/card reader combo | XP Pro sr2b OEM os.

Here's the question. The Antec Neohe 500wt supply uses Three (3) +12 rails
to deliver power. Each rail delivers 17 amps sustained. That represents 51
amps of +12 volts available to the system. The specifications for the x1950
pro requires at least 38 amps on the 12 volt rail. Does this psu meet the
requirements of this video card?

This psu has a modular system. Aside from the mobo and 4 / 8 pen 12 v
connector, which is hard-wired into the pus, all other lines are plugged
into the psu as needed. I have a separate line going to the x1950pro from
the psu. A separate line to the hd's, optics, and other.

I am hoping that the +12 going to the mobo is a different rail than the
pluggable connectors are supplied. How would I know? If I have a separate
17 amp rail going to the x1950 pro, is everything hunki-dori?

The plugs on the back of this psu have 6 different plugs. How do I know
which is rail 2 or rail 3?

The more research I do on this mobo and gpu, the more I get the itch to
purchase a stronger psu. Some say a 650 wt minimum. Everything on one
rail.

This is all confusing. HELP!

William

"William" <nospam.DeleteThis@pacifier.com> wrote in message
news:12qnttbhme3ba29@corp.supernews.com...
>I have a question about my psu driving my x1950pro. I have been reading
>forums and have not found a satisfactory explanation so far.
>
> First, the system: ASUS P5W DH Deluxe mobo | Intel C2D E6600 cup | 1Gx2
> Corsair Twin2x2048-6400 ram | Antec Neohe 500wt psu | Sapphire x1950 pro
> gpu | 250gig HD | 2 DVD's | Floppy/card reader combo | XP Pro sr2b OEM os.
>
> Here's the question. The Antec Neohe 500wt supply uses Three (3) +12
> rails to deliver power. Each rail delivers 17 amps sustained. That
> represents 51 amps of +12 volts available to the system. The
> specifications for the x1950 pro requires at least 38 amps on the 12 volt
> rail. Does this psu meet the requirements of this video card?
>
> This psu has a modular system. Aside from the mobo and 4 / 8 pen 12 v
> connector, which is hard-wired into the pus, all other lines are plugged
> into the psu as needed. I have a separate line going to the x1950pro from
> the psu. A separate line to the hd's, optics, and other.
>
> I am hoping that the +12 going to the mobo is a different rail than the
> pluggable connectors are supplied. How would I know? If I have a
> separate 17 amp rail going to the x1950 pro, is everything hunki-dori?
>
> The plugs on the back of this psu have 6 different plugs. How do I know
> which is rail 2 or rail 3?
>
> The more research I do on this mobo and gpu, the more I get the itch to
> purchase a stronger psu. Some say a 650 wt minimum. Everything on one
> rail.
>
> This is all confusing. HELP!
>
> William
>
>
More info:

I have found out that on psu's with multiple rails, the mobo gets its own
rail, number 2 all by itself. So that tells me that rail 1 and rail 3 are
available for general use. I still don't know which is which. I went to
Antec's web site and found nothing on rail assignment. However their is a
notice that Antec and ASUS have collaborated on a problem with some
combinations of these two units. ASUS has provided an update to their bios
for this, which is supposed to correct the majority of problems. Antec is
allowing people to send back their psu for exchange if problems exist. A
newer version of the psu has been shipping for months. These problems
between Antec Neohe and ASUS should start to go away.