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Dual ATI HD 2900XT 1gb Warning/error

Last response: in Graphics & Displays
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February 25, 2012 3:11:43 PM

Alright I just installed a bunch of new stuff in my computer, the performance has been okay even with the stupid warning I'm getting, but it is super annoying and frustrating to get it.

When windows boots I get a performance warning that pops up that says " Your graphics board may not be properly supported by the computer's power supply. The clock speeds have been decreased to reduce the power consumption. This may result in slower than expected application performance. Please make sure the appropriate power supply cables are connected to the graphics board."

A few things about my system, I just upgraded the psu. I went on a site with psu calculator punched in all the stuff I had (or would have) in my system. It came up with needing around 520-540 watts or something with a minimum of 400 and whatever. I bought an Antec 650watt PSU to compensate...... so in theory I should have the power

There are 2 connectors on each card, 1 6pin, and 1 8 pin. I know to use AMD overdrive you need the 8pin, and my psu has 2x 8 pin connectors (has a seperate 2 pin to connect with the 6). Since I got this error I tried both, I connected the 8pin to start on both cards, which works fine minus the warning. If I connect the 6 pin when I turn on the computer the fans are turning SUPER fast and I get a system beep error. So I'm left with leaving it on the 8pin.
Originally I also had both crossfire bridges connected, I have since taken one off.... but I haven't seen any change since removing or having the other on.

I just want my cards to run what they should out of the box, not looking to overclock.


Oh ya I have one case fan currently (120mm) I have another on it's way, just wanna be safe in keeping everything cool in there. I can give temps and such from AMD overdrive monitor if needed.
February 25, 2012 3:23:29 PM

Dont you need to connect BOTH connectors on the HD2900?

BTW ATI recommends 750watts for crossfire with those cards
February 25, 2012 3:29:12 PM

I don't know what I need, I didn't get a lot of info with the cards when I purchased them
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February 25, 2012 3:30:06 PM

You need to connect the 6pin and the 8pin to the card... it requires more then 200watts of power hence it requires both of them to be connected and not only one
February 25, 2012 3:36:11 PM

okay so I need to get a psu that has 4 connectors?
February 25, 2012 3:38:43 PM

yes since you have 2 cards.. unless you want to use an adapter to convert a molex connection...

But imo, if you can return the PSU, i would exchange 1 for 750w with the correct connectors..

2 cards at 200+ wattts =400+
1 cpu... dont know yours but lets put 100w
Motherboard, etc... 75+ watts

you are very close to 600watts...
a b U Graphics card
February 25, 2012 3:39:44 PM

You should have taken the Earthwatts 750, it has 4x 6+2 pin connectors. I would suggest taking one of the 2900's out for now. Anyways, those are outdated, power hungry and bad perfoming cards. You should sell them and get a single recent card.
February 25, 2012 3:55:11 PM

I just bought them, so I'll deal with 'em... I ordered the Antec 750watt, and I'll send the 650 back I guess when that gets here
a b U Graphics card
February 25, 2012 4:05:08 PM

Well yes you will, cause when you get them working right and you come back here and ask why your system is still laggy as balls, youll know why :) 
February 25, 2012 5:01:23 PM

why would it still be laggy?
I had a single Nvidia 1gb previous to this, 2x 1gb should be an upgrade? 16gb RAM, my system shouldn't have any trouble... I bought these cards because of their price picked both up for 125$ I think. I can only run crossfire on my board or I would've added another nvidia
a b U Graphics card
February 25, 2012 5:54:52 PM

Cause those cards are 6 years old? 5 at the minimum. Unless you are playing games of that vintage itll be pretty laggy. For $125 you coulda gotten a 6770 or even almost a 6850 that would blow those 2 away.
a b U Graphics card
February 25, 2012 6:24:32 PM

vrumor said:
Cause those cards are 6 years old? 5 at the minimum. Unless you are playing games of that vintage itll be pretty laggy. For $125 you coulda gotten a 6770 or even almost a 6850 that would blow those 2 away.



and draw like 5 times less power :p 
February 25, 2012 8:30:37 PM

alright well I guess when I'm ready for new cards I will post here first lol kinda sucks but I for some reason wanted to run dual cards

I mostly play wow, and will probably play d3 when it comes out, I would think it would handle those
a b U Graphics card
February 25, 2012 9:53:11 PM

WoW itll handle. But D3, maybe on low settings. Running dual cards isnt a bad idea, but always best to go with 1 really good GPU first. And then upgrade later when it starts to shwo its age.
February 26, 2012 6:07:06 PM

alright well if I was able to sell these for what I have in them, what would yall suggest to buy? in the 125-150$ range
a b U Graphics card
February 26, 2012 6:11:08 PM

For 140$ after MIR and free shipping, this deal is unbeatable. 6870 is the best card for the price and will easily run on the 650W Antec unit (if you haven't swapped it for the 750W yet). It would even work on a decent 400-500W unit. You won't regret getting it ;) 

http://www.newegg.com/Product/Product.aspx?Item=N82E168...
February 26, 2012 11:02:39 PM

and it'll run all the new games you say? Like d3, on good settings? and even WoW on ultra settings?
a b U Graphics card
February 26, 2012 11:38:54 PM

If you have a good CPU (which is pretty much the limiting factor for both these games and getting a better GPU than 6870 wouldn't change much) then I'm pretty sure you can max both games. Believe me that card is a great performer for the price.
February 27, 2012 12:45:25 AM

AMD Phenom II x4 965, gigabyte mobo
a b U Graphics card
February 27, 2012 2:16:20 PM

You'll be fine ;) 
February 27, 2012 4:09:31 PM

well my wife's gonna kill me but I ordered it and listed the other cards on ebay
a b U Graphics card
February 27, 2012 4:21:38 PM

Good choice. Sell her on all the energy youll save by not using those power hungry hogs.
February 27, 2012 5:36:22 PM

ya I don't think she'll buy that, but perhaps she'll get over it... when the other cards sell anyway (if I should say)
!