X1950 XT Power Requirements

[8bitcore]

I have an antec sonata ii case with 450W PSU which can deliver 15A on one 12V line and 17A on the other 12V line.

I read that the X1950 XT requires a 450W supply and needs 30A, so is mine suitable or will it cause me problems ?

Anybody using this case and PSU with one of these.

Thanks

 

[BassBomb]

it should be all right,

check your combined 12V output (should show up right under where you see 15A and 17A <-- adding the two wont do

 

[8bitcore]

These are the figures from datasheet at the antec site

+3.3V +5V +12V1 +12V2 +5V SB -12V
Max. Load 32.0A* 30A* 15A* 17A 2.0A 0.3A
Min. Load 0.5A 0.5A 0.4A 0.4A 0A 0A
Load Reg. +/-5%
+/-5%
+/-5%
+/-5%
+/-5%
+/-5%

It does not give an overall 12V current supply it just breaks them down individually.

So i cant just add them up then ? I cant find any PSU's that run a single 30A 12V line .. any ideas ?

 

[GEOrifle]

How i know from Sapphire's forum for X1950PRO AGP is recommended on single rail at least 30A and on dual rail at least 22A on each rail.
So it will be for X1950XT too almost the same.
I have 600W Colermaster eXtreme Power PSU dual 12v rail and 18A on each, they told me it isn't enough.
You better buy another PSU.

 

[conlan]

Your PSU is fine. I'm running an X1950XT on a Fortron 450W w/ no problems whatsoever. The Antec PSUs are quality units, and thats far more important than quantity, especially for PSUs.

 

[GEOrifle]

One thing you have to remember is that with a dual 12V PSU, 12V2 is dedicated to the CPU. This leaves 12V1 to power the rest of the system. High-end video cards can draw up to 300W alone, which equals to 25A. This is refering to an X1950XTX, but the Pro won't be too far behind. Low power can cause components to overheat. As the VRM's are the parts that regulate power to the card, it would be the first part to be affected by this condition. An old tech told me a long time ago, if a video card is overheating, increase the voltage. Some motherboards allow the GPU voltage to be increased. Raising the voltage is risky, and anything above stock will void the warranty if the card dies, so it isn't advised. One thing everyone should do is to check the System Health Status in the BIOS, and see if the 12V is holding steady around 12V. If it shows to be closer to 11.70V, then a new PSU should be considered. Below 11.70V, and you won't have to consider it, as it is no longer an option. The system will be too unstable to function properly. Mind you, this reading is done while the system is basically dormant, and doesn't reflect what voltage is actually produced once the system is under load. It's just a single reference point, but it's a good place to start.

 

[Xdreamer]

i have the exact same configuration. It works... but its close. 300W?!! nooooooooooo..... closer to 150. 75W from the slot and 75W from the power connector max.

 

[imported_Truenofan]

im running mine on a antec true power treo, my rails are +3.3@24A,+5V@24A,+12V1@19A,+12V2@19A,+12V3@19A,- 12V@0.8A,+5VSB@3.0A, and it runs it fine, atitool says i pull 35.5a on my 12v rails, and it still runs steady on a good oc' but i havent pushed it all the way yet since the cooler doesnt give enough cooling to push it further. im thinking of getting the thermalright vga cooler, any comments on this anyone? im gonna hafta mount it reversed fins twards the cpu which is an actual method of mounting it oddly enough. but im also reciving a scythe infinity or whatever it is mon, anyone know what kinda clearance it gets from the first pci-e slot and if it would be enough to mount it like that?

edit: oh and the seasonic psu was enough to run it quite well as well, 450w with at least 18a or so on the 12v rails should be enough. also, geo, the bios reading and any programs you use, can be off by alot, your better off getting a voltmeter and actually measuring the actual voltages from the real rails.