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Hi Guys,

I need a new PSU for a rig.

GPU cards;
5950
5970
6950

Will a 650W do?

Depends on the CPU and HDDs too...

CPU is an old duo2core and it has a SSD.

I'd like to drop a random recommendation: The SeaSonic X-Series might be an overall cheaper choice than it seems, despite costing about twice as much as the competition.

Until 1-2 years ago, me and people I know have been using various products of "Be Quiet!" and seen them all break down within or slightly above the warranty. The exchanged ones broke down again. I've lost count, but it should've been at the very least 9 of them at a striking 100% failure rate.

SeaSonic has a seven year warranty and wastes less power. In tests I've seen extremely stable voltages even if run 100W above target output. Their cable management has served me perfectly, no comparison with what I've used before. Since I started recommending them there are five running without one failure so far.

If I had an exchange that sells SeaSonic stocks, I might be buying that. Now, I'm just buying their PSUs and recommending people to do the same until I hear of a problem.

• Tip 1: Remember that a dead PSU after warranty costs the full price of a second PSU and the time to swap it on both system downtime and admin time.
• Tip 2: Never ever buy Be Quiet. They build stuff that self-destructs.
• Tip 3: Try SeaSonic X-Series or above. Even if the rest proves a fluke, seven years of warranty speak for themselves.

I'm not a miner, so I'll leave the exact power requirement to someone else.

No 650w 2x PCI-E 6+2 will blow! ;)

You need something in the 1000w range with 6x PCI-E 6+2 connectors.

Akasa Venom Power 1000W Modular Power Supply
http://www.scan.co.uk/products/1000w-akasa-venom-power-ak-pa100am03-uk-hybrid-modular-80-plus-gold-eps-12v-135mm-fan-atx-v23-psu

damn, was hoping to save some cash.

Depends on make as mentioned. Seasonic and XFX are the best. 750w would do

Hello tr03bor,

google for "super flower golden green", these are very good psus,
the golden green series has a high reliability and is very efficient.

I can promise you that these psus can run 24 hours/7 days
at high load without problems and making any problems.

I am not talking about the low cost super flowers, they are not
good.

But do you really mean the HD 5950? I think you made a mistake.

A 800 watt golden green psu from super flower should be enough.