430W psu ok for 4870?

[xsnv]

Just as above really.

Looking to dabble in a few pc games. Is a 430W psu enough to handle a 4870?

Thanks

 

[Greebo]

Should be fine so long as a quality make.

My Tagan 480w powered the following:

q6600 at 3.8ghz
2 x 2gb ram
p35 Abit Ip35rpo
Laing D5 waterpump
7 x 120mm fans
4 x hard drives
2 x optical drive
1 x floppy drive
1 x 4870 (overclocked)
1 x soundbalaster audigy
1 x wireless card

However, I added a blu ray writer and that was just a little too much for my psu and my max overclock dropped on the q6600.

 

[xsnv]

Aight. Thanks

 

[miker1]

Should be fine so long as a quality make.

My Tagan 480w powered the following:

q6600 at 3.8ghz
2 x 2gb ram
p35 Abit Ip35rpo
Laing D5 waterpump
7 x 120mm fans
4 x hard drives
2 x optical drive
1 x floppy drive
1 x 4870 (overclocked)
1 x soundbalaster audigy
1 x wireless card

However, I added a blu ray writer and that was just a little too much for my psu and my max overclock dropped on the q6600.

AHA! The last straw! Got an enermax 480 so as I have less than you I hope I'll be ok! *pray*....

 

[Greebo]

AHA! The last straw! Got an enermax 480 so as I have less than you I hope I'll be ok! *pray*....

You should be, my water pump consumes 24W and most people don;t have that so that gives you a bit of leaway.

 

[McMav]

Its more what amount of Amps you 12 V rail/rails can put out. I've noticed in gpu-z that the 4870 can me sitting at 40+ Amps

 

[lee87]

If it's a decent make it should be fine. I'm using a Antec Earthwatts 430W for a 4870 along with a quad core phenom.

 

[Greebo]

Its more what amount of Amps you 12 V rail/rails can put out. I've noticed in gpu-z that the 4870 can me sitting at 40+ Amps

?????? you sure? I only had 28 amps on my 12v rail on my psu and it worked fine.

Plus a pci-e card like the 4870 can have the following as a maxiumum:

pci-e 6 pin - 75W x 2 = 150W
pic-e slot 2.0 = 150W or pci-e slot 1.0 = 75W

Since 4870 work in pci-e 1 boards they must not take more than 75W through the slot.

Therefore maximum theoretical power consumption is 225W

Power = Volts x resistance => Resistance = power/volts

Therefore maximum ampage that a 4870 uses is 18.75 amps.

And the 4870 actually uses much less than this as nobody makes cards which uses the max ampage.

From memory the 4870 only just needs a 2nd pci-e 6 pin connector so hence a none overclocked 4870 only needs about 12.5 amps.

 

[McMav]

Its what GPU-Z reported. I'll screenie it tonight if I get a chance out playing snooker but I'll try and find time