3940XM overclocking - parameters to change.

[Siplast]

On 8/20/2026 at 9:31 PM, Busta Bloodnut said:

I know this thread is sort of old, but I will show you my specs and for future inquiring folk who want to overclock a 3940xm:

Just read your post and was hoping you might inform me as to which unlocked bios you are using on the M18xr2 ?

I have the same mods as you using 3080. On overclocking I can only set the flex ratio override to a max of 25 and yours is set to 32 ?

I know that the 3940xm and 3920xm have differing available settings are you using 3920 on the m18xr2 in the pics ? I am using Swick unlocked A11

Thanks

[Busta Bloodnut]

 

19 hours ago, Siplast said:

I am using Swick unlocked A11

I have A11 Unlocked also but the mod is sv17. Not sure if thats the same guy or two different modders as im not informed too much on that sorta stuff. I just downloaded that one since it was the first one I seen.

 

19 hours ago, Siplast said:

On overclocking I can only set the flex ratio override to a max of 25 and yours is set to 32 ?

 

When I have it enabled it just defaults as 32. Last time i changed it (I forget if I was setting it higher or lower than 32) it blue screened before windows even started and wouldn't turn on so i had to reset CMOS and im not going through that again lol.

 

19 hours ago, Siplast said:

I have the same mods as you using 3080.

What mods do you have? All same as me? Even the optional ones? Also which CPU do you have?

[Siplast]

M18xr2 with unlocked a11 by swick/ Svl7 with 3940xm 32gb of 1866(needs to be 2133mhz but impossible to find anymore) Using and xvision rtx3080mxm that the vbios is locked to 115w. Trying to get a great firestrike score with oc from the bios. Seems I will have to use Intel XTU for tuning my oc. Did you download the a11 from ssj92 on this site or another?

Thanks

[Siplast]

I have 2133 in my other m18xr2 but I don't really want to break down that set up right now

[Siplast]

Looking for custom heatsink for M17x r4 for the 3080 with backlight mod as a next project.

[Busta Bloodnut]

17 hours ago, Siplast said:

Did you download the a11 from ssj92 on this site or another?

 

I THINK it was from here. Its been a minute since Ive gotten it. I could send you the one I have if you want and you can reflash. Maybe that Swick one is outdated? Its either that or your mobo is having issues.

 

17 hours ago, Siplast said:

(needs to be 2133mhz but impossible to find anymore)

 

Lol good luck with that. I mean, i see them every now and again on Ebay but always one or two of them but i would rather just get them all at once.

 

17 hours ago, Siplast said:

Looking for custom heatsink for M17x r4 for the 3080 with backlight mod as a next project.

 

The Ebay user you probably bought your 3080 heatsink from (cicichen) MIGHT have one for that 17x r4. I say might because last time i asked him to make me a custom heatsink for the 3940xm i have in there and they said they couldn't because they didnt have the materials for it. I should message them again to see if they do have them now lol. Tired of it hitting 90c everytime it updates.

[SuperMG]

26 minutes ago, Busta Bloodnut said:

 

I THINK it was from here. Its been a minute since Ive gotten it. I could send you the one I have if you want and you can reflash. Maybe that Swick one is outdated? Its either that or your mobo is having issues.

 

 

Lol good luck with that. I mean, i see them every now and again on Ebay but always one or two of them but i would rather just get them all at once.

 

 

The Ebay user you probably bought your 3080 heatsink from (cicichen) MIGHT have one for that 17x r4. I say might because last time i asked him to make me a custom heatsink for the 3940xm i have in there and they said they couldn't because they didnt have the materials for it. I should message them again to see if they do have them now lol. Tired of it hitting 90c everytime it updates.

They are busy with my custom P775 watercooling 2 in 1 heatsink for RTX 40XX. Been 2 weeks, spent 400USD...

[Siplast]

I would like to see pictures of that when you get it !

1 hour ago, SuperMG said:

hey are busy with my custom P775 watercooling 2 in 1 heatsink for RTX 40XX. Been 2 weeks, spent 400USD...

I would like to see pictures of that when you get it !

[Siplast]

They did a great job on 3080 heatsink for M18XR2, said it was version 2. Bulged up the keyboard a bit bit trimmed small piece from the cover and it fit pretty nice.

[Siplast]

1 hour ago, SuperMG said:

The Ebay user you probably bought your 3080 heatsink from (cicichen) MIGHT have one for that 17x r4. I say might because last time i asked him to make me a custom heatsink for the 3940xm i have in there and they said they couldn't because they didnt have the materials for it. I should message them again to see if they do have them now lol. Tired of it hitting 90c everytime it updates.

They messaged me back and has a few left on Amazon. What OC have you been able to get with that 3940 ?

[Siplast]

Got the backlight mod in today from you and thanks ! Now to get the heatsink so I can try it out

[SuperMG]

51 minutes ago, Siplast said:

They messaged me back and has a few left on Amazon. What OC have you been able to get with that 3940 ?

The custom CPU heatsink isn't worth it. No improvements nothing. Only the M14X R2 fan mod is worth it

[Siplast]

1 hour ago, SuperMG said:

The custom CPU heatsink isn't worth it. No improvements nothing. Only the M14X R2 fan mod is worth it

So the stock one will work with xvision 3080 ?

[SuperMG]

36 minutes ago, Siplast said:

So the stock one will work with xvision 3080 ?

 

M17X R4:

The custom GPU heatsink is good (4 heatpipes), you also need the better fan. (+10CFM)

[Siplast]

my mistake, long day at work. Just saw that you said the cpu heatsink was not good, but that the gpu heatsink is good !

Thanks for that