x1800 voltage regulaters

[JamesBong420]

allright on the x1800xt i have noticed there are differnt numbers of voltage regulators.. so i jsut wnat to know what they do.. and difference in the cards would be what?
x1900's are 7.....


thanks...

this one has 5...
http://www.nordichardware.com/skrivelser_img/440/x1800XT.jpg

this one has 6.....
http://www.kohryu.com/picture/connect3/x1800xt/c3c-x1800xt.jpg

[[XC] MarioMaster]

i think those are the pwm system chokes, not the actual regulators, but each card probably has different numbers of them depending on power draw etc

[EnJoY]

That's an original model X1800XT you've got there. They soon after re-released them with 6 voltage regulators as 5 was causing stability problems on some cards and basically made overclocking non-existent or very dangerous.

Whatever you do, don't try to flash to XT PE as your card won't be able too.

[JamesBong420]

its legit mine has 6.. got the insulation done on my new block going to mount it soon.. jsut need to go to hardware store for mount equipment.....



http://buydurango.com/josh_files/comp81606/DSCF0005.JPG

[MaxxxRacer]

Ok.. here we go... A little electronics 101..

The things you are calling voltage regulators are actually just inductors. they are completely passive. They are just a ferrite core with copper wire wrapped around it. In this case they are used for filtering the DC voltage.

The actual voltage regulator is the PWM controller. It tells the PWM's when to open and close their gates. Without it nothing works. The PWM's themselves are what is under the red heatsink. They set-up or step-down the voltage. In this case I would presume its step-down due to the fact that most of the cards power is coming from the 12v connector.

My knowledge on this stuff isnt all that great so my info may not be 100% spot on, but it give the general idea.

here is a picture showing the components on the card.

[NickS]

I used to sink my inductors. Reduced PWM temps a bit. (5-6*C)