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There is nothing inherently wrong with splitters if you have enough power on the relevant rail. I've used splitters for years with nary an issue. However, making sure you have the right PSU in the right rail configuration is critical for good performance, stability and reliability.
stephen van vuuren
336.202.4777
http://www.sv2dcp.com/
http://www.sv2studios.com/
http://www.insaturnsrings.com/
A film is – or should be – more like music than like fiction. It should be a progression of moods and feelings. The theme, what’s behind the emotion, the meaning, all that comes later.
–Stanley Kubrick
-----Original Message-----
From: After Effects Mail List [mailto:AE-List@media-motion.tv] On Behalf Of Robert W. Walker
Sent: Friday, July 06, 2012 3:36 PM
To: After Effects Mail List
Subject: Re: [AE] OT: Two Graphics Cards in MacPro
I have read anecdotal evidence of problems, if not disasters, with power-splitters. There are third-party aux power supplies that can be mounted in a spare drive bay (including optical), provide plenty of extra wattage without taxing your onboard PSU. Also external PSU's, but those are not too elegant - gotta run cables into the tower through an open PCI slot cover.
Anyway, I thought I'd pass along what I found when researching this a few weeks ago.
> -------- Original Message --------
> Subject: [AE] OT: Two Graphics Cards in MacPro
> From: Byron Nash <byronnash@gmail.com>
> Date: Fri, July 06, 2012 3:26 pm
> To: "After Effects Mail List" <AE-List@media-motion.tv>
>
>
> I'd like to add a spare GTX285 to my MacPro with a Radeon in it. There
> aren't enough power plugs to go around but I can't seem to find one online.
> I keep searching on various sites and haven't seen the type of Y
> connector that it would need. I'm sure some of you have done this so
> I'm tapping the group think on this one.
>
> Thanks!
>
> Byron
+---End of message---+
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