I just get to know that the X1950Pro card need 30A at its +12V power rail.

But on my PSU, the spec is like +12V1 18A, +12V2 18A. And my PSU is cooler master extreme power duo 600W.

Is it enough for my card?

Oh ya, I need to explain again on my card problem. When I start to load in Battlefield 2142 and Need For Speed Carbon, my screen suddenly blackout but the CPU is still running. (You still can hear the game music is still playing)

At first, my thought is the card overheat. Then I try to download a software called Riva turner to control the fan speed to 90%, but same thing happened.

So, my concern here is the PSU spec enough for the card? Please advice......

Thanks in advance for the reply.

Strider_ozy

Someone is misleading you ?

"Power Supply Requirement:
450-Watt power supply or greater, 30 Amps, 12 volt rail is recommended (assumes fully loaded system)"

No PSU's I have found give out more than 20A on the 12V rail, 30A is usually on the 5V rail.

"No PSU's I have found give out more than 20A on the 12V rail"

Sorry, but one of my PSUs has 34A on the +12v rail...check the specs:

http://www.ultraproducts.com/produc...

The thing is, the above PSU conforms to the older ATX12V 1.3 standard. The new ATX12V 2.x standard changed the requirements for the +12v rail (among other things)...here's how it's written:

"In cases where expected current requirements is greater than 18A a second 12 V rail should be made available."

It would appear that the OP's CoolerMaster 600W PSU conforms to the newer ATX12V 2.x spec. It has two +12v rails of 18A each & that more than exceeds the 30A requirement for the X1950Pro. So unless the PSU is defective, my guess is the problem lies elsewhere.

Try ATiTool instead of RiveTuner:

http://www.techpowerup.com/atitool/

Thanks for the description.....
But anyway, I am still confused with the +12V1 and +12V2.
Since it is said 30A is required at +12V rail, but +12V1 and +12V2 is for different rail, right? How to say when combined, it is more than enough?
Please explain more on that.....
Thanks.....
I need to know more on this PSU.....
And also the ATI Tool doesnt support for X1950Pro.....

http://www.techpowerup.com/download...

Strider_ozy

Dude, you have 2 x 18A on the +12v rail. AFAIK, 36A is more than 30A...lol. Your PSU is more than adequate for your needs. Like I said above, unless the PSU is defective, it's NOT the cause of your problem.

I've read 3 common complaints against the X1950Pro...it's too long, it's power hungry, it runs hot. If you're sure it's not overheating, I would look at a possible driver issue or maybe a patch for the games that are acting up on you.

Sorry about ATiTool suggestion. I didn't see the note about your card.

BTW, I just did some googling & patches are available for both the games you mentioned

But the problem now is almost all the game are having the problem now......
Is not just these two games......
I know 18+18=36.
But I thought +12V1 is the one with 24 pins connector and the other one is for another connector one, right?
If that so, is not by just adding two figures that simple, right?
Please correct me if I am wrong.
I am confused.....

Strider_ozy

I over-simplified by saying 18A + 18A = 36A because that's not always the case, but you definitely have 30 or more total amps combined.

As I understand it, the two main reasons the split in the +12v rail came about in the 1st place are:

1) to meet the requirements of a saftey standard that puts a max limit of 240VA on any electronic device a person will likely have access to & come in contact with. (12v x 20A = 240VA). 18A is generally the max you'll see though...it's kind of a saftey factor within a safety standard...lol. This standard doesn't apply to things like radios, TVs, etc because it's not likely that the average person is gonna open the back of a TV & poke around inside. But since more & more people were upgrading their own PC hardware, the engineers at Intel (who are the ones that write the ATX guide) decided the 240VA safety standard "had" to be conformed to.

2) to provide a dedicated +12v line to the CPU & hopefully improve stability because the CPU won't be sharing it's line with other devices.

OK, now let's get to a *possible* explanation for your problem. Since one 12v x 18A rail is exclusively for the CPU, the other +12v rail is obviously used for any other devices (fans, HDD, optical drives, etc) that need it. However, with video cards becoming more power hungry, they've begun to tap into the +12v rail to supplement their power needs. This is pushing that 2nd +12v rail to it's limit.

The solution *may* be to get to a "gamer" PSU that has a 3rd +12v rail, or get a PSU that conforms to an older ATX spec that allows for high amperage on a single +12v rail.

Here's an interesting article that I ran across:

http://www.theinquirer.net/default....

Thanks jam for the full detail and explanantion......
Start to wonder what kind of job are you working on?
Just wonder..... :)

Strider_ozy