DVI port

November 3, 2011 at 17:34:57
Specs: Windows 7, Amd Opteron 170/2GB
I have 2 ati radeon 5970 in crossfire and I was wondering which dvi port is 1 and 2? I am connecting my dvi port in the pcie x16 slot 1. How do you find out which dvi port is 1 or 2?

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November 3, 2011 at 17:47:28
Owners manual ought to say.

1/3 of highway deaths are caused by drunks. The rest are by people who can't drive any better than a drunk.

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November 3, 2011 at 18:08:59
I bought my video cards without any manual.

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November 3, 2011 at 18:21:10
It took me less than 5 seconds to find this:

ATI Radeon HD 5970 User Guide

If you have a CD or DVD that came with the cards, it's probably on that too.
You don't get printed manuals these days.

If you're having a video problem, tell us about it.

If you have only one monitor connected, Windows probably sees whatever single video port that is being used as the Primary display, whether it's the Primary or Secondary port on the card.

Your mboard main chipset must be able to support CrossfireX

You must have two video cards with the 5970 chipset, or two 5970 video chipsets on one card, for the video chipsets to be able to run in CrossfireX mode.

If you're using two video cards, you may need to consult the manual for the mboard to enable video from a second PCI-E X16 slot

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November 4, 2011 at 05:58:07
Well sometimes when I restart the computer or turn it on my monitor wont show anything. I sometimes hear it go into desktop but my monitor is blank. I usually just hit the reset button and hope for it to work. What is causing it to do this?

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November 4, 2011 at 06:56:06
ATI Radeon HD 5970

System Requirements

- 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.

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November 4, 2011 at 07:07:58
I am using an ultra x3 1000w psu. I also plugged up the sata atx4p connector on my motherboard. I plugged up the 6 pin and 8 pin connectors on both my video cards too. I am also using the crossfire bridge that came with my motherboard.

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November 4, 2011 at 07:24:39
See the last part of response 5. I have just added more to it. You may need to refresh the page.
You could also try removing and re-seating the 6 and 8 pin connectors in the power sockets on the cards, and making sure the connectors for power for the two power sockets on the mboard are seated properly.

I don't know much about Ultra power supplies. I know TigerDirect sells them. There are probably other brands that are more reliable. However, AMD / ATI does list some Ultra models at the Certified power supply list link in response 5 I supplied.

Sometimes specific models of even good power supply brands have problems, and if so there are probably posts on the web about that - you could try searching the web with Ultra and the specific model number to see if you can find that. However, there is always a small percentage of them that fail even when it's a good model, and some of those failures were caused by an external event or by the computer user doing something dumb he or she shouldn't have done - it's a matter of whether you find a lot of mentions of problems

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