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[PJ101]

XION XION II XON-103 Black Computer Case With Side Panel Window - Retail
Original Price: $64.99
Instant Savings: -$5.00
$59.99
($44.99 after $15.00 Mail-In Rebate)
Is the power supply in this good enough to handle current graphics cards… it has 2 12V rails … one with 18A and one with 1A.


I am looking at this case right now, will the included powersuppy be better than the one i currnetly have? http://www.newegg.com/Product/ShowImage.asp?image=17-182-015-02.jpg,17-182-015-03.jpg,17-182-015-04.jpg,17-182-015-05.jpg,17-182-015-06.jpg,17-182-015-07.jpg,17-182-015-08.jpg,17-182-015-09.jpg,17-182-015-10.jpg&CurImage=17-182-015-10.jpg&Description=Rosewill%20RV450-2%20ATX%202.01%20450W%20Power%20Supply%20-%20Retail

Also when i build my new machine which will have 2 120mm fans a opty 165 and probably a x1900xt will either of these powersupplies have enough wattage or current on the 12 Volt rails... What do i really need when i build my new setup? As a side note i also have a 400W from rosewill here at home but the powerplug isnt compatible with my current mobo.. how do i know if it will be with a newer one?

 

[MrCommunistGen]

are you sure that both of the 12V rails are positive 12V? 1A seems awfully low. My guess is that its a -12V rail which isn't the same thing. The workings of a PSU aren't one of my strong points and neither is electrical engeneering so I don't know what the "-" rails do...
Do you have a link for the new case/power supply? Also, there is no guarantee that the new PSU will have a 24pin motherboard power connector. It may have a 20pin like your old power supply (the one you had the link for?)
Also, the link you provided is for a 450W Rosewill not a 400W so the amperage will be different. Edit: If I had to guess the Rosewill in the link would do ok, but I don't know about a 400W.
Current (A) is related to Wattage. Voltage x Amperage=Wattage.
If you're looking for a good power supply I'd suggest browsing the forums a bit since I don't know nearly as much about power supplies as others.

But, I've heard various places that Antec, Enermax, Fortran, and Thermaltake make good power supplies... but don't take my word for it. I suggest reading reviews or perhaps posting a different question about a specific power supply.

Good Luck!
-mcg

 

[PJ101]

Ok, to specify. I have both of these powersupplies currently
Rosewill 400W 2 12V rails (14A + 15A) 24 Pin connector
Rosewill 450W 1 12V Rail (22A) 20 Pin connector + 4 Pin p4 connector.
How do these compare to ones i could buy for around 50 bucks. Which one is compatible with say a DFI Lanparty mobo for a Opty? And what is the max wattage i will need with a processor (opty), 2 gigs ram (2x1gb), At least 1 7200 rpm hard drive, an ati 1800xt, 2 120 mm case fans, floppy

 

[PJ101]

I also used this Wattage calculator on the internet
http://extreme.outervision.com/psucalculator.jsp Is that power draw about right? Am i forgetting anything?

 

[MrCommunistGen]

The wattage calculator site doesn't save any of your hardware or your wattage calculation so the link you gave me doesn't help. I'll try to reconstruct it in a sec. One thing you should take into account is that power supplies dont run at 100% efficiency. most are 80% give or take maybe 10%. I'm not sure if the site takes this into account.

-mcg

 

[PJ101]

Ok, it said i needed 383 watts, that was with 2 high performance 120 mm fans and 1 high performance 80 mm fan, 2 sata hard drives, a 1800xt overclocked, and overclocked opty and 2 gigs of ram. I probably wont be getting all of that... but from what you are saying i will need more that 400W with efficiency and all.

 

[PJ101]

It also says at the top of the site that new vid cards need 26A, the PSU in that case only has 18A... uh oh. And unfortunately the PSU i have here that would meet A requirements only has 400W output... oh well geuss I will have to buy a new one. Do AMD motherboards use a 20 pin, 20+4 pin, or a 24 pin power connector to the mobo?

 

[MrCommunistGen]

Are you planning on OCing the Opteron? I noticed from your sig that you're running an OD'd system. That affects the wattage requirement. Also, do you have any optical drives and are you going to use an X1800XT or an X1900XT because you mention both.

As for the two power supplies I'm somewhat conflicted. In general I'd recommend the (newer?) 400W because it has the required(not sure) 24pin connector and more total amperage on the 12V. However 400W is probably a BIT low... its always better to have more wattage than too little. Since the 450W Rosewill only has 1 12V rail and has a 20pin connector its probably older and has had some time to wear out (check the bottom of the page of the wattage calculator where it says capacitor aging) so even if the 24pin isnt necessary it probably is less capable for newer systems than the 400W. The 450W probably has higher 3.3V and 5V which isn't what is needed for newer power hungry systems.

-mcg

Also: I'm not dissing you or anything, but you might get more replys from people who know more if you posted this in a more appropriate section. Posting this under Hard Drives probably doesn't get this thread the attention it deserves. Also, being more specific in your thread title might help. I'm sure some people skip over ambiguous threads... especially if they seem to be in the wrong section.

 

[PJ101]

Oops.. sorry about posting in the wrong section. How is this powersupply Antec Truepower II 550W? Will that do?

 

[MrCommunistGen]

I finished guestimating on the wattage calculator (I assumed you were using an X1900XT, I added a CD drive and a USB device, and used 15% surge compensation and 20% capacitor aging). I got 467W. So if this is acurate (I really don't know, but I've seen this page referred to several times) then the 400W is definately iffy and even the 450W would be iffy if it were a newer design. As it is the 450W is probably decently iffy as well since its the older design.
I'm not sure what PSUs you can get for about $50 but I'd recommend at least looking into a new one. If the 400W seems to work ok you could keep it for a while and save up some money for a better PSU, but I'd be careful because if the PSU goes out then it could take some of your other equipment with it.
I did a bit of browsing and other people have recommended OCZ, Tagan, Antec, PC Power & Cooling (definately more than $50), Sparkle, FSP, and Tagan. I used to have a 300W Sparkle and it did well.

Link to another thread

-mcg

 

[KWH]

Great PS, I have one.

 

[MrCommunistGen]

The Antec Truepower II 550W should do very nicely. If it was a priority and/or if I had more money I'd probably get one myself to replace my Antec SmartPower II 500W which *might* be causing a bit of a stability problem for me... or it could just be my cheapo ECS motherboard. The Antec TPII is definately good enough its just not as cheap as you were talking about earlier.

-mcg

 

[angry_ducky]

The Antec Truepower II 550W should do very nicely. If it was a priority and/or if I had more money I'd probably get one myself to replace my Antec SmartPower II 500W which *might* be causing a bit of a stability problem for me... or it could just be my cheapo ECS motherboard. The Antec TPII is definately good enough its just not as cheap as you were talking about earlier.

-mcg

I don't think your PSU is causing stability problems. Your 3DMark05 score seems kind of low, though.

 

[MrCommunistGen]

Now that you mention it my 3DMark05 score does look a bit low... maybe by a hundred or 2? Could be the mobo.

-mcg

 

[PJ101]

Yeah sorry about the sudden change in powersupply price. I geuss if I'm going to do this it's going to be right. :lol: Meaning PSU and all I really can't wait to build