can i replace this psu with normal atx

[Orcvader]

Well I recently got my friend this PSU to go with a 6850, and it seems to be doing fine, although apparantly other users are noticng some problems with it. I wouldn't go any lower than this.

 

[welsh_andy]

i did say to the guy, if u can give me a letter to confirm this will run a 5770/6770 i would be happy. so if blew system, then i have come back, but i offered refund instead. but he did say they were running 6770 on test rigs with this psu

 

[Orcvader]

Either he's really lucky, or he's only saying that to tempt you to keep the PSU so he can keep the cash made. I wouldn't risk it, just demand the refund. He can't reject the refund anyway due to consumer rights.

 

[Vimes]

Have a read here...

http://www.tomshardware.com/reviews/power-supply-psu-review,2916.html

... there are so many many reasons why a cheap / non branded PSU is just not appropriate for a system if you value stability, and the safety of your components etc.

 

[olivier renault]

There's probably a Lepa that will do the job.

 

[panyan]

http://www.tomshardware.com/reviews/power-supply-psu-review,2916.html

that is a VERY useful guide:

Which Power Rails Are Important?

That brings us to one of the most crucial points of modern power supplies: namely, the power they are able to supply at various voltages. Nowadays, PCs draw the majority of their power from the +12 V rail. By comparison, the other two voltages, 3.3 and 5 V, play a far less important role. That’s why you can use the following as a rule of thumb: if a PSU’s 12 V rail can supply all of the required power with room to spare, then the lower voltages are sufficient as well.

However, the opposite is not necessarily the case. Let’s compare the spec stickers of two PSU models:

The difference is quite obvious. Although the second model is billed as a 550 W unit, its +12 V rails only add up to 380 W, and even that only holds true if the other rails aren’t being stressed simultaneously! Nobody needs 315 W on the 3.3 and 5 V rails. In practice, this power supply would probably reach its limit at a load of 350 W on the 12 V rail.

Ironically, even a good 425 W PSU could push more power than this model at 12 V. Don’t fall for this sort of trickery.

 

[welsh_andy]

that is a VERY useful guide:

cheers thats a gd guide, i took it back and refunded im gona get that OCZ ZS Series 550W 80PLUS Bronze or Coolermaster GX 550W 80PLUS

 

[olivier renault]

I'm gonna recommend this one again.

Antec TruePower New Modular 550W '80 Plus Bronze' Power Supply

Semi-modular, Seasonic build, full wattage on 12V, great reviews £54, lovely.

Will power pretty much any single card, although a 580 will be really pushing it.

The GX550 is OK.

 

[welsh_andy]

i ordered the gx550w, mainly due to reviews, but also 5yr warrenty wasnt to be sniffed at.

thx for all ur help guys

 

[olivier renault]

That should do the trick.

 

[welsh_andy]

cheers again, now have to post in gpu section as ive been thrown by what reading on gpu, was gona be 6770, but read its just a 5770 rebranded, and a better choice would be a hd6790. im completely lost now lol

 

[olivier renault]

best is to look up reviews. the xx90's are usually dual GPUs. That means crossfire. But not that one

For the price, I'd get a GTX460, a or a 6870 bit it's a stretch budget-wise.

 

[welsh_andy]

best is to look up reviews. the xx90's are usually dual GPUs. That means crossfire. But not that one

For the price, I'd get a GTX460, a or a 6870 bit it's a stretch budget-wise.

was looking at gtx 460 seems a pretty gd card, i have found Palit GeForce GTX 460 @ £90 same price as 6790, from looking at benchmarks it beats the 6790 in most, will my coolermaster gx550 support it?
what about bottleneck?