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HD 6850 with 450W PSU?

Last response: in Graphics & Displays
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March 16, 2011 1:07:09 PM

Sup dudes

So yeah the title says it all. Im planning to buy an HD 6850 but I wonder if it will work fine with a no brand 450W PSU? I heard the 6850s aint so power hungry and I dont wanna waste money on a 100 dollar PSU. I bought an HD 4890 back in the day but it did not work well with this PSU.

My spex are:

Core i7 920 @ 2.66Ghz

6gb 1066mhz ddr3 ram

GT 230 1.5 GB

1TB 7200RPM HDD

450W no brand PSU (its an Acer PC)

Thanks in advance

More about : 6850 450w psu

a c 128 U Graphics card
March 16, 2011 1:46:01 PM

There should be a sticker on the PSU listing amps and watts available for each power rail (some generics don't have this)?

How many amps (A) are on the 12V rail?
March 16, 2011 1:54:07 PM

ubercake said:
There should be a sticker on the PSU listing amps and watts available for each power rail (some generics don't have this)?

How many amps (A) are on the 12V rail?


if I rem right im 99% sure that my PSU dont have that thing on the sticker. As far as I can remember all it has on the sticker is a warning thing that says that it cant supply more than 450W and rest is just chinese.
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a c 128 U Graphics card
March 16, 2011 2:04:06 PM

okini55 said:
if I rem right im 99% sure that my PSU dont have that thing on the sticker. As far as I can remember all it has on the sticker is a warning thing that says that it cant supply more than 450W and rest is just chinese.

It's all a crapshoot then. I wouldn't take the chance of underpowering a card. It's like giving it its own little brown-out. It won't take long to fry. On the other hand it might work? Do you want to pay for something and take that chance though?

You should consider getting a new Corsair 500-600W power supply with at least 34A on the 12V rail to prepare for a video card upgrade (22A is a high-end requirement for a single video card and the rest - 10-12A - would be for the CPU).
a b U Graphics card
March 16, 2011 2:21:03 PM

ubercake said:
It's all a crapshoot then. I wouldn't take the chance of underpowering a card. It's like giving it its own little brown-out. It won't take long to fry. On the other hand it might work? Do you want to pay for something and take that chance though?

You should consider getting a new Corsair 500-600W power supply with at least 34A on the 12V rail to prepare for a video card upgrade (22A is a high-end requirement for a single video card and the rest - 10-12A - would be for the CPU).


+1 listen the Fonz on this one, ayyyyyyyyyyyyy! The psu that ct1615 recommended is a perfect fit for the OP imo
March 16, 2011 2:44:11 PM

Ok then guys thank you for the help :D  Ill get myself a new PSU first. And then the card :) 
a b U Graphics card
March 16, 2011 2:59:36 PM

^wise decision, enjoy!
a b U Graphics card
March 16, 2011 3:00:46 PM

how the heck did you end up with a gt 230 1.5 gb btw? I didn't even know they made those.
a c 128 U Graphics card
March 16, 2011 4:45:31 PM

I know it's a drag to have to put money into something where you don't really see results, but the longevity of your system and every component relies on good power. I just dropped some coin on a UPS; not exciting at all.

Anyway, this is a widely popular PSU because of its quality and reliability:

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

The TX, HX and AX series power supplies are solid and 80-plus certified.
a c 106 U Graphics card
March 16, 2011 4:59:49 PM

The GT 230 is an oem only card. It's got like a 96-bit or a 192 bit bus so it can have 1.5GB like a 9600GSO. Of course it's alot slower :p 
July 19, 2012 8:05:53 AM

would my psu be able to handle an msi 6850?
psu 450w cit
ac input 115/230v, 7a/4a, 50-60hz
3.3v - 28a
5v 32 a
12v 24a
-12v 0.6a
5vsb 2a

getting 402w needed at maximum load on power calcualtor
!