300 Watt Power Supply to run a 450 watt card?
Could I run a graphics card like the Radeon HD4850 with a 300 watt power supply? I know that a 450 watt psu is recommended but I thought it depended more on the +12V rails and amps. Here are the specs on the psu:
[url="http://support.gateway.com/s/POWER/6506054R/6506054Rsp2.shtml"]http://support.gateway.com/s/POWER/6506054...06054Rsp2.shtml[/url]

And if I installed the graphics card into my pc with the 300 watt psu in there and the psu couldnt handle it, what could happen?
Could I run a graphics card like the Radeon HD4850 with a 300 watt power supply? I know that a 450 watt psu is recommended but I thought it depended more on the +12V rails and amps. Here are the specs on the psu:

http://support.gateway.com/s/POWER/6506054...06054Rsp2.shtml



And if I installed the graphics card into my pc with the 300 watt psu in there and the psu couldnt handle it, what could happen?

#1
Posted 07/21/2008 03:10 AM   
[quote name='spencerk' date='Jul 21 2008, 11:10 AM']And if I installed the graphics card into my pc with the 300 watt psu in there and the psu couldnt handle it, what could happen?
[/quote]What [i]could[/i] happen? Depends how good your imagination is, unlikely that anything good will happen though.

My guess is that you plug it all in, switch it on and it works.... for a little while..... then the PSU gets overloaded and either shuts down (best case scenario), or goes 'bang' with a whisp of smoke. It might take an hour, a day, a week or even a few months before the PSU burns out but it will likely happen. There is also a possibility the motherboard could be damaged at the same time.
[quote name='spencerk' date='Jul 21 2008, 11:10 AM']And if I installed the graphics card into my pc with the 300 watt psu in there and the psu couldnt handle it, what could happen?

What could happen? Depends how good your imagination is, unlikely that anything good will happen though.



My guess is that you plug it all in, switch it on and it works.... for a little while..... then the PSU gets overloaded and either shuts down (best case scenario), or goes 'bang' with a whisp of smoke. It might take an hour, a day, a week or even a few months before the PSU burns out but it will likely happen. There is also a possibility the motherboard could be damaged at the same time.

#2
Posted 07/21/2008 06:38 AM   
[quote name='spencerk' date='Jul 21 2008, 11:10 AM']Could I run a graphics card like the Radeon HD4850 with a 300 watt power supply? I know that a 450 watt psu is recommended but I thought it depended more on the +12V rails and amps. Here are the specs on the psu:
[url="http://support.gateway.com/s/POWER/6506054R/6506054Rsp2.shtml"]http://support.gateway.com/s/POWER/6506054...06054Rsp2.shtml[/url]

And if I installed the graphics card into my pc with the 300 watt psu in there and the psu couldnt handle it, what could happen?
[right][snapback]413644[/snapback][/right]
[/quote]
nope wont run it because you also have to have mobo,CPU,CPU cooler,fans,HDD,CD drives,ramm
[quote name='spencerk' date='Jul 21 2008, 11:10 AM']Could I run a graphics card like the Radeon HD4850 with a 300 watt power supply? I know that a 450 watt psu is recommended but I thought it depended more on the +12V rails and amps. Here are the specs on the psu:

http://support.gateway.com/s/POWER/6506054...06054Rsp2.shtml



And if I installed the graphics card into my pc with the 300 watt psu in there and the psu couldnt handle it, what could happen?

[snapback]413644[/snapback]




nope wont run it because you also have to have mobo,CPU,CPU cooler,fans,HDD,CD drives,ramm

#3
Posted 07/21/2008 06:38 AM   
Also, the Gateway psu's are'nt known for beeing any wonder of quality. A 300W is suffient to run such cards as the old Geforce FX cards. Your whole system would benefit from buying a good 500W psu, with as much juice on the +12V as possible (30A and up for the HD 4800 cards). I don't belive you wanna risk frying the mobo for ex? You can get a nice 500W from a reknown brand for about 60 bucks.

Othervice, as the other guys says
Also, the Gateway psu's are'nt known for beeing any wonder of quality. A 300W is suffient to run such cards as the old Geforce FX cards. Your whole system would benefit from buying a good 500W psu, with as much juice on the +12V as possible (30A and up for the HD 4800 cards). I don't belive you wanna risk frying the mobo for ex? You can get a nice 500W from a reknown brand for about 60 bucks.



Othervice, as the other guys says

Case: Antec P 180B. modded. 2 x 120mm Noctua fans.

Psu: Corsair HX 750W modular.

Mobo: EVGA 141-BL-E757-TR.

Cpu: Intel Core i7 920 2.6GHz @ 3.4 GHz.

Cpu cooler: Noctua NH-U12P SE1366.

RAM: Kingston HyperX 3GB DDR 3. 1600

Video cards: Sapphire HD 4890 Vapor-X Crossfire.

HDD: Western Digital Caviar 640gb Black edt.

Sound: Auzentech X-FI Prelude. Camebridge Desktop theatre 5.1 speakers.

#4
Posted 07/21/2008 10:16 AM   
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