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R5870 Beeping + PSU recommendation

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Last response: in Components
June 16, 2010 1:14:04 PM

Hi all,
Had a problem with a new build and finally narrowed it down to either the R5870 being dead or the PSU not being powerful enough. Using 8800GT on the system = All ok, 5870 = beep codes.

Arctic 700W PSU
MSI R5870

Box says you need 600W PSU so this one should be fine, however this PSU only supplies 1 x 6 pin which can convert to 8 pin but the GPU needs 2 x 8pin for maximum performance. The manual says 1x 6pin or 1x 8 pin should be fine but that's not the case.
Would I be better ordering a 4pin --> 8 pin converter or getting a completely new PSU? If so, could you recommend one which would work with this GPU?

Here's what the manual says:
"600W or greater power supply with one 150W 8-pin PCI Express power connector and one 75W 6-pin PCI Express power connector. (Recommend to use power supply with two 150W 8-pin PCI Express power connectors for best performance.)"

So I guess I'm looking for a PSU with 2x 150W 8-pin PCI E and a few 4pins for the cases 6 fans.

Full system: Antec 1200 case, Phenom 955, R5870, 4GB Gskill C7, 890FXA UD5 MOBO
Looking to spend no more than £50 - $100($140)

Artcic 700W Specs:


* Support latest Intel ATX 12v and AMD
* 24 (20+4 pin)
* 6 pin PCI-Express Power Connector
* Support NVidia SLI Technology
* 8 (4+4) pin supports two sockes server
* Super Quiet Technology: Smart fan control function
* Over Voltage Protection (OVP)
* Over Power Protection (OPP)
* Short-Circuit Protection (SCP)
* 80mm fan to maximise airflow
* 100% Hi-pot, Chroma and Burn-in function

Universal 24pin (20+4pin) Main ATX power
4 pin ATX12V power connector x1
3x 4 pin Molex Connector(for HDD, CD-ROM)
2x Floppy connector (4pin)
4x SATA Hard Drive Power connector
1x 6pin PCI-Express Connector (via 4pin Molex Adaptor)
4 pin Molex to 8 (4+4) pin + 12V Power Adapter
Velcro Cable Tie x2


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June 16, 2010 2:16:02 PM

xaira said:
both power plugs need to be populated son, from the sounds of it you only have one populated, or you have 1x8pin+ 1x 6pin, all power pins on the card need to be populated

you need either a new psu with the connectors, or

two adapters


Thanks very much for the quick replies, I hope it is a simple case of the pins.
Yes Xaira, spot on. I was running with 1x 8 pin because the manual says it should work. But after looking over other sites on the R5870, they say, as you have said, that both 8 pin sockets need to be used.
June 16, 2010 3:04:38 PM

Ok decided to just get a new PSU since the old PC would be without one otherwise.
Been looking at this one but would it be able to supply the 2x8 pin required for the GPU?
June 16, 2010 7:13:53 PM

xaira said:

this one has 4x 8pin


Decided to order a new PSU and the cable adapters just to test whether the previous PSU could handle the GPU.
Thanks for the help, hopefully this will be problem solved.