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Honestly, it depends on the quality of the Rosewill, which is usually low. If it was a high quality psu, you'd be fine. If it is not, you may have problems. What's the 12V rail rated at? My guess would be that your system is pulling somewhere around 300W, so how well it will work will depend on how the rails are laid out.
No, efficiency is separate.does the Energy Efficiency label have anything to do with his power supply in this case?
That is.. if his current psu in case is or isnt 80 PLUS Certified / >80% effecient?
Do I need to get a new power supply? And if I don't, what might happen?
Thanks for the quick response. I have the RG430-2 (http://www.newegg.com/Product/Product.aspx?Item=N82E16817182159).
From what I can see the combined 12V rail output is 33 amps. Individually I think they are rated at 20 amps. Is that OK?
I don't care to much about killing my PSU (seeing as though I have to buy a new one anyways) but I definitely don't want to damage the board or video card.
The energy efficiency relates to what percentage of the power coming from the wall is actually used to power stuff in the computer. What he is looking for is the large sticker on the side of most PSUs that says how many watts are available on each voltage rail. iirc, the power draw for a 9800 GTX is about 160W and most of that is on the 12V rail, which is 13.3A. Based on that, I wouldn't be comfortable running his system on a PSU with less than 20A on the 12V rail, and more would be better.
I guess my original estimate was high. Here's a link showing load power consumption of a system similar to his at about 230W. http://www.overclock.net/hardware-news/300236-expreview-9800-gtx-power-consumption.html
I have a question.
when u mention that the power draw is 160W for the 9800GTX, is that just the card? or the whole system plus the card?
He's referring to just the card itself, not the entire system. 160W seems a bit of a high estimate for a 9800GTX though.
The combined 12V rail is 31A, not 33A. The UL number lists Magnell as the OEM of that PSU. I have never heard of that company and a search here on the forums as well as over at Jonnyguru.com turned up nothing either.
So considering that the OEM is an unknown, the quality of that PSU is very very suspicious. No confirmation, either direct or indirect, that the PSU is actually capable of providing 31A on the +12V rail cleanly, reliably and safely. Considering Rosewill's track record, I do not recommend using that PSU. Too many unknowns and too many risks.
He's referring to just the card itself, not the entire system. 160W seems a bit of a high estimate for a 9800GTX though.
yes the tdp for the 9800gtx is 160 watts but Nvidia cards usually get no where near as high as their tdp rating."The GeForce 9800 GTX GPU itself is manufactured on a 65nm process and contains 754 million transistors, making it actually more complex than the G80. The video card as a whole is also rated at 156 watts TDP, which is 29 watts less than the GeForce 8800 GTX video card which weighs in at 185 watts."
http://www.hardocp.com/article.html?art=MTQ4MSwsLGhlbnRodXNpYXN0
That's where I was getting that.
yes the tdp for the 9800gtx is 160 watts but Nvidia cards usually get no where near as high as their tdp rating.