|ATI Radeon HD 5970 |
- 650 Watt or greater power supply one 75W 6-pin and one 150W 8-pin PCI Express® power connectors recommended (850 Watt with two 75W 6-pin and two 150W 8-pin connectors for ATI CrossFireX™ technology in dual mode)
- Certified power supplies are recommended. Refer to http://support.amd.com/us/certified... for a list of certified products
What's the capacity of the power supply ? 850 watts or more iwith two 75W 6-pin and two 150W 8-pin connectors is recommended in your case.
If you power supply does not have enough capacity, it will be damaged and may fail completely eventually.
Does it have all the required connectors coming from it ?
If it doesn't and you used (a) Y wiring adapter(s) it (they) will probably not be able to supply enough current at +12.0 v for the cards.
Your power supply must have at least the minimum capacity required to support a system with the graphics card you are using installed, or the max graphics card you might install in the future.
(Onboard video - video built into the mboard - IS NOT A CARD ! )
If that info is not in the ad for the video card, you can go to the video card maker's web site and look up the specs for the model - often under system requirements - the minimum PS wattage, and, more important, the minimum amperage the PS must supply at 12v is stated. If you don't find that, any card with the same video chipset including any letters after the model number has very similar minimum PS requirements. Some power supplies have two or more +12v ratings - in that case, add those ratings to determine the total +12v current capacity.
If you're a gamer...
In most if not all cases, the max capacity rating of the PS is an intermittent rating. It's recommended that you do not load your PS to any more that 80% of that rating if you are going to be using something that puts a constant load on it, such as playing a recent game for hours on end. In that case, you multiply the min capacity stated for the system with the particular video chipset on the card by 1.25 to find the min. capacity of the PS you should have.
850 x 1.25 = 1062.5 watts or more. !000 watts would be close enough to that.
If you need to get a PS with more capacity, you can usually replace it with any decent quality standard sized standard ATX PS.
Standard (PS/2) power supply size - 86mm high, 150mm wide, 140mm deep, or 3 3/8" h x 5 7/8" w x 5 1/2" d , or very close to that, though the depth can be more or less for some PSs.
Don't buy an el-cheapo (in quality) PS.
See response 3 in this:
I no longer recommenf Cooler Master, AOpen, or Sparkle power supplies.
If your power supply DOES have enough capacity, make sure that the cards and the ram modules are all the way down in their slots. The latches at both ends of all the ram slots ram modules are in should be against the ends of the modules.
If those things seem fine but you still have the problem...
- See response 2 in this - try cleaning the contacts on the ram modules, and making sure the modules are properly seated:
- clean the contacts on the bottom of the video cards the same way while you're in there.