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radeon 9800 pro 128mb on a 300 watt psu ???

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January 14, 2004 12:14:27 PM

Will the radeon 9800 pro 128mb card run okay on a 300 watt PSU with a number of other components installed eg dvd writer dvd rom drive hard drive and floopy disk ???
i know ati recommends 300 watt or higher but this is borderline i was wondering if anyone has this set up or expeiriance with this issue? also would newer rumoured unreleased graphics cards from ATI or Nvidia require more power or the same as the current ones available???
January 14, 2004 12:49:45 PM

As a general rule of thumb, the more powerful the graphics card, the more power it will require. So yes, I would say that next generation cards will require more power.

As for the 300W PSU, if I were you I would upgrade to a TruePower 430W, just to be on the safe side. 300W is pretty borderline, especially if you have case fans and lots of other stuff, such as DVD drives.

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January 14, 2004 4:09:37 PM

If it's a 300w premium name brand (antec, etc.) you might get away with it.

Otherwise, it'll likely work, but be a source of system instability...

________________
<b>Radeon <font color=red>9500 PRO</b></font color=red> <i>(hardmodded 9500, o/c 322/322)</i>
<b>AthlonXP <font color=red>2600+</b></font color=red> <i>(o/c 2400+ w/143Mhz fsb)</i>
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January 14, 2004 6:35:44 PM

Tried it at 300 and ended up getting a new power supply. There just wasn't enough power to go around.
a b U Graphics card
January 14, 2004 7:12:17 PM

Depnds on what else is this 'number of other components', but from the sounds of things it would be tight even with a good brand name 300W PSU, and if it's generic cheap 300W psu, you can almost bank on having problems.


EDIT: Since there are so many Antec suggestions let me just add a nice Enermax, PcPower&Cooling and Fortron as other great PCU makers.

- You need a licence to buy a gun, but they'll sell anyone a stamp <i>(or internet account)</i> ! - <font color=green>RED </font color=green> <font color=red> GREEN</font color=red> GA to SK :evil: 
<P ID="edit"><FONT SIZE=-1><EM>Edited by TheGreatGrapeApe on 01/14/04 02:15 PM.</EM></FONT></P>
January 14, 2004 7:12:29 PM

Depends on the brand. A good 300 might. Most won't run well with it. Just get yerself a nice antec true550... runs bout $100 and you won't need to worry about it :) 

<A HREF="http://www.lochel.com/THGC/html/shadus.html" target="_new">Shadus</A>
January 15, 2004 8:56:56 AM

I have an idea on my mind that I would like everyone thoughts.

I have a 300W PSU. CD-RW, DVD, 2 fans, XP1700@1900, Webcam, NIC, floopy disc. I am a little scared of upgrading my current GF3Ti500, but I have lying around some old AT 150-200W PSU.

Project :wink:
- "Attach" outside the case the old AT PSU.
- Connect DVD, CD-RW and fan to this PSU.
- Connect the extra power of a 9700/9800 to this PSU also.

Some questions ...
- The old PSU is enough for DVD, CD-RW, fan and GPU? Think that does not supply energy to any other component (memory, CPU, mobo, NIC, etc.)
- This will help the PSU's case? IIRC at least 2 rails are usually combined, so taking out all the power needed by these devices may help.

Any ideas? Crazy? Not worth? (could be, but funny?)


Still looking for a <b>good online retailer</b> in Spain :frown:
January 15, 2004 1:30:36 PM

In theory, it sounds good.

I don't know anyone whose tried it, though.

________________
<b>Radeon <font color=red>9500 PRO</b></font color=red> <i>(hardmodded 9500, o/c 322/322)</i>
<b>AthlonXP <font color=red>2600+</b></font color=red> <i>(o/c 2400+ w/143Mhz fsb)</i>
<b>3dMark03: <font color=red>4,055</b></font color=red>
January 15, 2004 2:46:55 PM

hey thanks for the info, slight problem i would upgrade the PSU at the drop of a hat howevr i have a sony vaio rz the psu is a little compact im sure i could find one to fit the current one is 10 cm depth by 15cm wide any ideas ?? and the idea of linking to a seperate PSU out side the case i also thought might work , in theory it works as its only supply power! the computer wouldnt know if u were using one or 10 PSUs
January 15, 2004 9:34:27 PM

I had a 9800 Pro running fine on a 350watt Enermax. I dont think a quality 300watt should have a problem unless you have something approaching a server setup as far as devices is concerned.

From what you listed, if the PSU is high quality you wont have a problem. Sounds like you have a typical system compared to most.

Make sure you give the GPU more power to the AGP voltage, set it at 1.7v otherwise it wont matter how good your PSU is.
I had power related issues until I made that change with my Radeons.

----
Yeah, thats right. I support the NV/AMD/IBM axis of evil.
January 15, 2004 10:43:55 PM

how do set the agp voltage to 1.7 ??? again thanks :) 
January 15, 2004 10:51:18 PM

Its in your bios. Should say something like "AGP Voltage Regulator"
some boards do it automatically I believe (if its not in there).

----
Yeah, thats right. I support the NV/AMD/IBM axis of evil.
a b U Graphics card
January 16, 2004 1:50:11 AM

That's a very stupid suggestion when the Fortron 530W unit puts out MORE power than the True Power 550W, and cost around $70.

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January 17, 2004 2:05:00 AM

If you do that type of jury rigging, just make sure your power supplies are well grounded together, or you'll just might end up with a floating ground, with a floating ground you'll have some interesting logic problems

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