gx640 fan control

is there a way to change fan speed. the fan rpm is unnecessarily high when im just surfing the web and it switches often for no apparent reason.

have to return it if there is no way around this. cant bring such a loud thing into the library plus its pissing me off when it just switches from 20% fanspeed to 50% for fun.

any help would be appreciated, thanks

 

It's probably easiest to underclock it if you want it to be quieter.

 

how do i underclock the Gpu or does it just underclock itself? i tried power management but that didnt do anything.

 

The CPU underclocks itself the 1.2GHz when not in use, but I meant the GPU, because that runs hotter than the CPU does anyway.

To underclock the GPU you need something like the AMD GPU clock tool from here.

 

cool will give it a try. there seems to be 3 fan speed settings. 1 is pretty quiet 2 is pretty loud in a quite place and 3 is really loud

my just hops between 1 and 2 which is really annoying lol.

update, downclock gpu to 100/100 temp at 49C and stupid fan still goes to lvl2 for fun. but less often. arrrg i didnt not forsee this problem, even my old dell E1705 wasnt this annoying. 15% restocking charge ouch.

 

I believe fan goes quiet when GPU temperature is lower than 53 or 54 C. So just find a way to reduce that GPU temp (for me underclocking just barely reaches this margin).
I'd love to cool it off even more.

 

Well, the other thing you can do is undervolt, as discussed here.

 

i'll give undervolting a go today after work. havnt had much time to use the laptop (spent 3hours testing installing fresh windows) hopefully undervotling/downclocking will get the fan to keep quite for surfing/typing usage.

 

Is this an isolated problem? I think that would really annoy me.

 

turn on laptop about 15mins ago gpu idling at 57C stock volts/clocks. cpu temp at 48C. 19C amb. the fan hasnt gone into 2nd lvl yet, still nice and peaceful.

kinda weird because yesterday it was at 50C and the fan was going high and low. hopefully it will stay this way so i dont have to return it and waste 200bux.

edit: fan went into lvl 2 after temp reached 59C. time to downclock/undervolt.

edit 2: tried to downclock in 100mhz increments, screen went colorful in several attempts (it didnt do this yesterday when i downclocked it to 100/100) in my last attempt i was at 200/500 but lowering to 200/400 made my screen go out. rebooted and screen was still black. waited 30s and booted up and screen is back. fun stuff lol.

 

If you find stuff like that happens,

Pop your battery out and power cord,

Then hold power for 30 seconds, you get all the aditional juice nullified and the bios reset which is quite handy.

 

gpu running at 100/100 0.9v although i dont have anyways of validating the voltage.

idle temp was 58 at stock now idle temp is at 49C, the fan is nice and quiet mission accomplished.

 

Doesn't the AMD GPU clock tool report voltage correctly?

 

i press set voltage and nothing happens

 

I know it doesn't change voltage, but are you saying it also shows the wrong value as well?

 

heres a screenshot, my temps are staying nicely around 50C and the fans hasnt gone loud in an hour so this is quite nice. watching a bluray movie atm everything is working smoothly

 

Right, so it still reports it as 1.05V even though you're sure you have it set to 0.9V? Good to hear things are working well, though.
The blu-ray is using the CPU and not GPU acceleration, I'd guess?

 

ya when i press set voltage nothing happens. cpu is at 48C.

from my multiple downclock trials ive come to 2 conclusion, downclock in increments of 150-200 and dont put ram to 400 (atleast for me, it bugs out everytime i put it to 400).

 

I recommend setting up a keyboard shortcut for resetting to default clocks so you can do so without trying to use the mouse on a screen full of artifacts.