Question about crossfire and psu

[blacklic0ric3]

I just got a new crossfire enabled mobo so I want to use my 4830 along with my 4890, however the 4890 needs 2 6-pin connectors and the 4830 needs 1. My PSU only has one and I am using the 4890s adapter to make it work atm. Do i need the psu plugged into both? and if so, is it possible for me to buy another one of those adapters or should I just get a new PSU? thx

 

[wa1]

It depend on your PSU..
What model? Brand? list the specification here...

And yes, u must plugged both of the adapter's cable...

 

[blacklic0ric3]

It is the corsair 450w psu... I can't post specs now because I am posting from my phone n would have to look it up

 

[wa1]

Ouch... only 450 watt?
I would say even u couldn't provide enough power to your HD4890, and about crossfire, forget it...
U must a better and higher PSU, corsair is a good one, but need more power...

 

[blacklic0ric3]

I've had the 4890 for a few months now so I know my psu is strong enough for that... I figured I could use xfire cuz I read somewhere that someone used a 400w to xfire 2 4890s

 

[wa1]

400W for 2 4890? wow, surely he got a very high quality PSU...
okay, back to main problem, your PSU only had 1 PCI-E power connector, right?
4890 need 2 and 4830 need 1, so u must have 3. u can use molex adapter 4pin to 6pin power connector for that, and yes, u must plugged both of the adapter's cable...

 

[blacklic0ric3]

K thx