Buying Corsair TX650

[alikum]

Hello guys,

I intend to purchase a Corsair TX650 to power AM3 Phenom II x4 955 and crossfire-compatible board. I know that this power supply can provide sufficient juice to power two 4890s. However, it lacks the necessary connectors, making it a less preferred choice. My question is, has anyone tried running 4890 in crossfire with this power supply using adapters? Did you come across any problems? Is that viable?

 

[JohnnyLucky]

The Corsair HX620 is the power supply with four PCI-e power connectors for Crossfire mode.

 

[alikum]

Hm, I checked Corsair's website and it shows that HX620 has 2 connectors. Also, HX620 and TX750 are priced about the same, meaning that they are a little too expensive for me.

 

[IzzyCraft]

Using the molex to pcie 6/8 pins isn't recommend when you can avoid it. It most likely would run just fine but i would avoid changing the volts during a OC or really OCing it at all. I've only ran one card using those adapters the booted up and seemed to run just fine, after all why would they give you those adapters if they didn't work at all.

 

[alikum]

@IzzyCraft
Well, I don't intend to OC the display card at all. I do OC the CPU however. I agree with you but oh well, I just want to make sure that it's safe to use the adapters before I purchase. I just wonder why Corsair TX650 doesn't come with 4 cables instead?

 

[JohnnyLucky]

OOPS! My mistake. I get mixed up sometimes. I meant the Corsair HX650:

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139012

However, the TX850 is on sale and the final price is $20.00 cheaper than the HX650. The final price for the TX750 is $30.00 cheaper than the HX650. Go figure.

 

[buzznut]

Out of curiosity, why is it people have no problem spending tons of money on all these video cards then insist on spending less than $100 on the power to make it go?

I really don't understand why people insist on skimping on their power supply. I just don't get it.

 

[JohnnyLucky]

buzznut - The high quality Corsair TX650 that alikum selected has a final sale price of $79.99 at newegg.com. It's an excellent sale price and it can definitely handle the 4890's. Unfortunately it only comes with two 75 watt PCI-e 6 pin connectors. A Corsair psu with two additional 6 pin connectors is going to cost $20.00 to $30.00 more depending on the model. You also have to take into consideration we have visitors who are on a budget. It's also why Tom's Hardware always includes a budget build in the system builder marathon articles.

 

[alikum]

@buzznut

JohnnyLucky hit the nail. I am on a tight budget and really wouldn't want to blow it because TX650 is way more than sufficient to power a mid-high end rig with *only* 2 graphics cards. Judging by the way things are going, components are becoming more energy efficient like 5000s.

I do not need some top end graphics cards. Actually, I was eyeing on 5770 (requires only one connector) prior to its release, hoping it to be at 4890 level. However, review showed otherwise. It cannot even best the 4870 in some instances.

Hopefully AMD releases 5790(?) in two weeks time as a solution to my problem

As for Johnny, thanks for the links. I'll wait for another two weeks to see how things play out.