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SAPPHIRE Radeon X1950PRO AGP Power Requirments??

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January 19, 2007 3:59:44 PM

I have a Shuttle XPC with a Radeon 9800Pro currently and want to get a few more years out of my setup. I'm wondering if my power supply (Shuttle PC50 300watt) can run an X1950Pro? My 9800 recommends a 350watt and it ran perfectly on my old stock 200watt PSU... which leads me to believe 300 should be fine. Can anyone speculate? Thanks.
January 19, 2007 5:02:12 PM

No, your PSU will not be enough to run X1950Pro. At the very least you need a 450W PSU with a strong 12V rail. I heard that even a 18 Amper 12V rail can feed this card but I would go for a stronger 12V rail. say 22+ Amper.
January 19, 2007 5:34:02 PM

I installed mine two days ago. I've got an Antec TruBlu 430w. Played Oblivion for 6 hrs last noght, no problem.
Fantastic video card! :D 
DC
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January 19, 2007 10:22:09 PM

i got a 380watt 22amp on +12V rail.

no problems yet.
January 19, 2007 10:23:27 PM

Quote:
i got a 380watt 22amp on +12V rail.


You have a decent 12V rail. There are plenty of 500W PSUs out there with 18 amp on the 12V rail...
January 19, 2007 10:26:05 PM

It's recomended that you have a 450W PSU with 30amp on the 12V rail. They're pretty power hungry.
January 19, 2007 10:29:31 PM

Quote:
i got a 380watt 22amp on +12V rail.


You have a decent 12V rail. There are plenty of 500W PSUs out there with 18 amp on the 12V rail...

true true

just make sure u dont go for one of those cheap £20 psu's that claim they can power new york city.
January 21, 2007 4:08:08 PM

I am gonna throw the above into every recent thread complaining about "No signal" problems. Hopefully, this will save some people some headaches.

Many people have had varuius problems with X19xx series of cards where they would get no signal or see their PCs lock up/crash into a blank screen.

Well I've just read this about Sapphire's Radeon X1950 Pro AGP on Firingsquad and thought everyone should keep this in mind when troubleshooting such problems:

Quote:
Fortunately as we mentioned earlier, you can daisy chain your VGA power connection, allowing you to piggyback off the power cable(s) you already use for your optical or hard disk drives, but you can’t run both Molex connectors off the same power cable.

Sapphire could have eased end user's pain by including dual power adapters inside the card’s packaging, but unfortunately only one adapter is provided. Sapphire also should have spelled this out more explicitly on the card’s packaging and inside the manual. We honestly wouldn't be surprised if quite a few perfectly good cards end up getting returned because end users didn't know this.


To clarify, since you need 30 amps to feed this card and most PSUs have less than 30 amps per one +12V rail you do need to connect two independent +12V cables to this card even if one of the cables feeds your optical drives and such...

I am gonna throw the above into every recent thread complaining about "No signal" problems. Hopefully, this will save some people some headaches.
January 22, 2007 11:29:17 PM

I'm running it on enlight 400w, which is strange, I've look up the website and they say it got 15A + 18A on the 12v rails, however when i look at the psu's sticker, i could only see 15A on the 12v rail (a single rail). However it's been close to a month now, and i've never had any problem. I've connected both molex to power cable.

My System: AXP 3000+, GA7N400Pro2, 2x256Mb, 2 HDD, 1 DVD-RW, Sb Live.

I'm going to add another 512Mb ram stick anytime soon, let's see if it still capable to power up my system
a c 363 U Graphics card
January 23, 2007 12:35:11 AM

Quote:
I have a Shuttle XPC with a Radeon 9800Pro currently and want to get a few more years out of my setup. I'm wondering if my power supply (Shuttle PC50 300watt) can run an X1950Pro? My 9800 recommends a 350watt and it ran perfectly on my old stock 200watt PSU... which leads me to believe 300 should be fine. Can anyone speculate? Thanks.


Not recommended. I do not know the specs of the Shuttle PC50 300w PSU, but your P4 3.2GHz CPU draws 141w under load from the 12v rail. The 9800 Pro draws another 47w on the 12v rail. Each hard drive and optical drive draws another 16w under load. Assuming you have one of each drive , your system is drawing 220w on the 12v rail alone. That number excludes any fans drawing power from the 12v rails.

The 1950Pro draws 66w of power on the 12v rail which is 19w more than the 9800Pro. That will stress the PSU's 12v rail to 239w while it still needs to provide power to other components that draws power from the 3.3v and 5v rails.

You are pretty much at the limit and you shouldn't drop in a GPU that draws more power than the 9800Pro. That leaves you with only two mainstream AGP GPUs:

1. 7600GT
2. X1600Pro

That's it. Unless you can find an AGP version of the 7900GT or 7900GS. The 7800 series draws too much power, and forget the X1650XT which also draws too much power. Of the two cards listed above, the 7600GT will give you the best performance.

Pentuim 4 Power Consumption

9800Pro Power Consumption

X1950Pro power consumption
!