Hi all,
Need some advice on PSUs please:
So far this year, I've bought new gear as follows -
Mobo: Asus P8Z68-VLX
PSU: Intel i5 2500k
Memory: 8 gig DDR 3 1600 ( 2 x 4 gig sticks).
GPU: Asus Radeon EAH 6850.
I am using older kit as follows -
HDD: 2 Hitachi 500meg 7200 rpm drives.
DVD-R Drive
BD-R drive
My problem is, that with this configuration, the 6850 stops the PC from booting. My old GPU, an ASUS RADEON EAH4850 runs perfectly with this system!
The mobo, psu, memory and graphics card have all been returned to sellers, tested and returned to me as "fit for purpose".
I think that the problem is my PSU. It's an Akasa PowerMax 850 gaming power supply, which in theory should do the job, BUT there seems to be a problem with the 12v dual rail, which outputs 35amps per rail. The 6850 requires 40 amps, but I think it's only getting 35 amps from one of the rails. This causes the PC to refuse to even get to post imo.
Various people have looked at the system & can't see what the problem is. I've spent a lot of money buying & returning hardware, only to be told that there's nothing wrong with it. I've been posting on another forum, but not really getting any sensible opinions, so I'm hoping someone here can advise me.
Is my analysis good? Should I buy a PSU with a single 12v rail? I pretty sure I'd need >600w with a powerful 12v rail.
I'd appreciate any advice you can give me.
Thanks in advance,
Rob


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