4850 on 450w

[Dexterts]

Can Saphire Radeon 4850 512ddr3 work on my Fronier 450w psu?
My config. is Gigabite ga-m57sli-s4,2gb ddr 2 667,Athlon X2 4400+,Maxtor 40gb ata+Maxtor 80gb sata.

 

[outlw6669]

Welcome to the forums!


ATI recommends a 450w or higher PSU for the 4850.
You should have no issues.

ATI Radeon™ HD 4850 System Requirements

450 Watt or greater power supply with 75 Watt 6-pin PCI Express® power connector recommended

http://ati.amd.com/products/Radeonhd4800/requirements.html

 

[gabriel227]

It'll work if it's a decent quality PSU. I'm running an Athlon X2 4200+ OC'd to 2.8, 2 dvd burners, 4 sticks of ram (not that they count for much), and a 4850 on a year old Antec Earthwatt 380W.

 

[wh3resmycar]

q6600 @ 3.0ghz / 4850 user here and my psu is a corsair vx450.

 

[mactronix]

We really need to know the Amps on your +12 V Rails/s. You cant just go on Wattage.
wh3resmycar has a 450 from corsair that has 33 Amps on its single +12 V Rail, this supply has been proven to run a 4870.
While im running on a 460 Watt PSU that has 26 Amps on its dual +12 V rails. This would not run a 4870.

Mactronix

 

[Onus]

If it's a quality PSU, yes. If it has "MAX" in its name, it will probably die shrieking (hopefully alone).

 

[daft]

trust me it will. im running my 4850 at 700/1050Mhz with a 6000+ (3.1Ghz at 1.4v ) CPU 4 sticks of DDR2 ram at 1.92v. and i've been fine under full load for over 15 hours. you will be fine. also, my 450 watt psu (logisys. was surprised it ran it at all) has no 6pin connector, so im going through a 2x molex to 6 pin connector

 

[puterpoweruser]

Right now i'm running a 5200+ Crossfire 4850's, 500gig drive, 2 dvd drives, 4 1gig sticks of pc2-6400 and a full size gigabyte 790GX motherboard on a 550W Antec so you'll be fine lol.

 

[daft]

We really need to know the Amps on your +12 V Rails/s. You cant just go on Wattage.
wh3resmycar has a 450 from corsair that has 33 Amps on its single +12 V Rail, this supply has been proven to run a 4870.
While im running on a 460 Watt PSU that has 26 Amps on its dual +12 V rails. This would not run a 4870.

Mactronix

well. you can always find out how many amps are on the rail by very elementary level math. volts X amps = watts. reverse it to volts / watts = amps. simple right. so that means wh3resmycar could get 396 watts out of that single rail.

 

[wh3resmycar]

well there are generic 450w PSUs and lower tier ones that has only 18a on a single +12v rail.

 

[mactronix]

well. you can always find out how many amps are on the rail by very elementary level math. volts X amps = watts. reverse it to volts / watts = amps. simple right. so that means wh3resmycar could get 396 watts out of that single rail.

Correct

http://www.corsair.com/products/vx/default.aspx

Mactronix

 

[daskrabbe]

While im running on a 460 Watt PSU that has 26 Amps on its dual +12 V rails. This would not run a 4870.

I doubt that is true - have you tried?

 

[mactronix]

Oh i'm sure that technically speaking yes it would run it but that would be taking out of what its specified to be able to do.
Now that's fine for the likes of yourself and me but i was just trying to show the differences to the OP who's knowledge of these things is obviously not on par with yours or mine.
I find its always best to stick within specifications when your recommending or explaining things.
If i put the card in my system and it frys then i have done it to myself, however if i was to suggest that its ok to someone else then that's a different matter entirely.

Mactronix

 

[Onus]

Hmmm, we could have a fun poll, how many days before Daft's overstressed cheap-o PSU blows electronic chunks? Bonus question, what other components will it take with it?

 

[wh3resmycar]

i think the mobo will be salvaged from it. considering its a gigabyte. i read somewhere it has some power fail-safe gizmo.