I want to Underclock my FX-6300

[Kevin Shelbrock]

When im not gaming my computer isn't ever doing anything CPU intensive and I would like to underclock to reduce temps being pumped out by my machine. Im in a small bedroom and with no central air the temps rise here fast. Have an AMD Fx-6300 on an MSI 760GM-P34(FX) main, without turbo im running at 3.5ghz-1.2375v and hitting 36c when idling. want to drop the temp to around 20c or lower and an aftermarket cpu cooler is not an option right now. Im using AMD overdrive to control the cpu but do not know a save voltage to frequency ratio and don't want to mess my cpu up experimenting.

 

[Mysticking32]

36 is perfectly fine when idling. You won't really see a massive difference when you underclock either. It'd only be a few degrees, if that. And always use the bios to overclock a cpu. Programs are not recommended.

 

[Suzuki@1473780084@1473780163]

Your CPU will underclock itself when you're idling, it's only during load it'll run hot. If you really want 20 C, then your ambient temperature is going to have to be lower than that, which is actually (probably) not possible in your case if you don't have control over the temperature in there.

 

[Kevin Shelbrock]

Your CPU will underclock itself when you're idling, it's only during load it'll run hot. If you really want 20 C, then your ambient temperature is going to have to be lower than that, which is actually (probably) not possible in your case if you don't have control over the temperature in there.

Reducing the ambient temperature of my room is the goal here. My room is small enough that my pc being on raises the temperature noticeably. I want to reduce the cpu temp to lower the temp of the exhaust being put out of my machine. some say that underclocking and reducing voltage will reduce cpu temp drastically as well as lower powerconsumption of the computer (which is important to me also because it runs 24/7). I don't need to debate whether it will help or not, can find that on my own, cutting from 3.8Ghz@1.33v to 3.5ghz@1.23v already makes a 12c difference, just need to know what the voltage/frequency ratios should be if I want to pull it down to 3ghz or lower.

 

[madmatt30]

seriously?
just goto windows power saving options & change the minimum processor state to 5% ( altough Im fairly certain the minimum a 6300 can run at is 1400mhz- & voltage will drop automaticaly as the clocks drop)
idle temps are inaccurate anyway - below mid 40's you cant trust them at all - if your room is 18-20c though your cpu is going to be a minimum of 30c even in an inactive state - its an electrical item ,theres no way to change this

 

[Kevin Shelbrock]

seriously?
just goto windows power saving options & change the minimum processor state to 5% ( altough Im fairly certain the minimum a 6300 can run at is 1400mhz- & voltage will drop automaticaly as the clocks drop)
idle temps are inaccurate anyway - below mid 40's you cant trust them at all - if your room is 18-20c though your cpu is going to be a minimum of 30c even in an inactive state - its an electrical item ,theres no way to change this

So I really appreciate the advice, cutting the minimum cpu to 5% is making a huge difference, right to where you said it would, core-0 clocking at 1400mhz around .8v, but maybe I don't understand the way multicores work, AMD Overdrive clocks core-0 at 1400mhz@.8v and the other 5 at 3500ghz@1.23v, is there a reason for this, and if so can I get all 6 cores down? Reducing it as much as I have already at idle is showing a temp of around 21c(don't from 38c) and I understand that the reading isn't accurate but a drop is a drop (especially that much of one) even if its not 100% correct. wondering if the other 5 are still running high for some reason if it would get cooler lowering them. I do not understand much about the way multicore processors work so if this is completely ignorant question I understand.

 

[madmatt30]

No its not an ignorant question mate.

All cores should be able to down clock to the minimum speed - you have an anomaly & not sure why .
The voltage ,ignore it - its impossible to have a different voltage for different cores.
There is a single voltage for the whole cpu split across the cores.

You can see here that all cores at obevpoint dropped to min speed.


I suggest running hwinfo & leave your PC idling for an hour to see ifcl you at some point hit those minimums or if the cores are locking at the higher speed & never drop.

 

[Kevin Shelbrock]

No its not an ignorant question mate.

All cores should be able to down clock to the minimum speed - you have an anomaly & not sure why .
The voltage ,ignore it - its impossible to have a different voltage for different cores.
There is a single voltage for the whole cpu split across the cores.

You can see here that all cores at obevpoint dropped to min speed.


I suggest running hwinfo & leave your PC idling for an hour to see ifcl you at some point hit those minimums or if the cores are locking at the higher speed & never drop.

have been monitoring on hwmonitor and it seems if all the clocks are shifting between 1400mhz and 3500mhz, so it is probably just an issue with AMD Overdrive and the way it monitors it. It has had the desired effect though. Since making the change ive gone from 28c thermal margin to 44c (idle temps hovering around 22c) and its made a noticeable difference in the exhaust temperature and therefore reducing the temperature of my room. I appreciate it, cannot believe I overlooked something so simple. In the winter when its freezing in here ill be able to keep this thing running ain the teens or lower when idling now even with a stock cooler.

 

[madmatt30]

Sometimes mate its the simplest solutions that work best.

On another note its entirely possible to make a few batch files that you can put on the desktop with msrtweaker that will allow you to lock the clock speeds at different set frequencies.
If this is of interest to you let me know & I'll do a little tutorial when I'm back at home on the desktop this evening.

 

[A_Great_Big_Tree]

No its not an ignorant question mate.

All cores should be able to down clock to the minimum speed - you have an anomaly & not sure why .
The voltage ,ignore it - its impossible to have a different voltage for different cores.
There is a single voltage for the whole cpu split across the cores.

You can see here that all cores at obevpoint dropped to min speed.


I suggest running hwinfo & leave your PC idling for an hour to see ifcl you at some point hit those minimums or if the cores are locking at the higher speed & never drop.

Please help me dude!!

http://www.tomshardware.co.uk/answers/id-2703495/amd-6300-black-edition-m5a78l-turn-turbo-boost.html#xtor=EPR-8809