PVR-350 Power

[octagon]

Does anyone know what the power (wattage) requirements are for the PVR-350? I know they do get hot, so the card uses much more than a network card for example. Also, does it use draw primarily from the 5v buss or both 5v and 12v?

[SHS]

PCI bus is 3.3V or 5V only
The problem with 350 it not the power (wattage) but it die size manufactured at 0.25 process
PVR 350 need 25 watts if I recall rigth.

[octagon]

So having three of them (along with a Nvidia Video card) would put somewhat of a strain on the power supply. I'm having boot problems (cold boot) while recovery from standby seems OK. It seems to hang toward the end of the boot process; the 3.3V rail is sagging. It did not do this with two PVR-350's but started when I added the third.

[SHS]

What do you have rigth now for system spec and size of your power supply

[octagon]

Athlon T-bird 1.4G CPU, 1GB (4 x 256M) DDR memory, Nvidia Riva M64 Video Card, 300W Power Supply, Win2kSp4

[SHS]

I try changes that 300 out for a 400 watt

[octagon]

Will start looking for an older 20 pin 400W (or larger) supply. The newer 24 pin jobs are set up for higher 12V and lower 3.3v/5v currents used by more modern CPU's.  Will remove one of the PVR-350's till I get one; it worked OK with 2 before with the 300W supply.

[SHS]

You can use some newer power supply with 20+4Pin the 4Pin brake away from the 20Pin but that not the problem the older motherboard use much higher amps/watts on the 3.3v/5v rail.

As for higher 12V and lower 3.3v/5v

There all same on all ATX up to ATX 2.3 when it come to voltage, The real problem start ATX 2.0 with amps/watts on 3.3v and 5v rails was significantly reduced how ever not all power supply are that way.
How ever if have any ISA in use you need find an older ATX12V 1.2 spec Pin 20 (formerly −5V, white wire) is absent in current power supplies; it was optional in ATX and ATX12V ver. 1.2, and deleted as of ver. 1.3.
How ever in you case you need Original ATX spec up to ATX12V 1.3 or look really hard you may find same ATX12V 2.01 which mainly need be designing the Intel Pentium 4/AMD K8
Keep in mind when they say higher 12V and lower 3.3v/5v there really ref to amps/watts.
You want min 3.3v 28amp / 5v 35amp or higher amps
http://en.wikipedia.org/wiki/ATX#Interchanging_old.2Fnew_systems_with_old.2Fnew_PSUs
Go to newegg look for Linkworld LPG8

[octagon]

My board has six PCI slots (and I was using five of them) and one AGP; no ISA's. I know of a surplus guy who sells power supplies (among other things) and he had some 20 pin supplies of the P4 vintage (Sparkle/HiPro) between 300W-450W at one time; since those don't sell all that well he probably still has them.

[octagon]

Did get an older (non-working) Antec SL-350 (2004-5 vintage) supply from a friend; repaired it and now everything working with good 3.3v and 5v rails. Note: virtually every older supply I ran across (including the one I fixed) had blown/leaking and/or bulging electrolytic caps in the secondary part of the supply (where all the output wires are connected to the board).  Most of the bad caps were the same brand; the hard part was finding low ESR 105C rated caps that would fit in the space the old ones were.