The adjustment of the multiplier has no impact.
The adjustment of the multiplier has no impact.
Amtsseung :
KYmo :
There’s still no change according to CPUZ. I tested various power plans in Windows and ran Prime95 for stress testing—it reports a strange 3.5Ghz reading. Also, when I set the multiplier to 41 with EIST and Turbo disabled, it re-enabled itself automatically unless I restored the BIOS to its default state.
My first suggestion was to clear the CMOS. Not just restore defaults, but completely wipe all BIOS changes at a hardware level. This will avoid conflicts from random settings you’ve altered. Check your CPU-Z screenshot for any mention of "Multiplier x 16.0 (16-35)". Why 35? The maximum stock clock speed is actually 34. If enhanced turbo were active, it should show 16-38 in the parameters. If you entered a multiplier of 41 and the setting stayed, it should read "Multiplier x 41.0 (16-34)" during load. Something’s off here. Clear CMOS and ensure everything is back to normal before making further adjustments. As a general tip, change settings sparingly to achieve your goal.
Oh right, EIST, Package C-states, and Speedstep are closely linked—either all on or all off. In your case, keep them on and disable Turbo only. Mixing on and off can cause unexpected behavior.
The next step is to keep XMP disabled—it’s meant to interfere with the BIOS, which helps overclockers but isn’t ideal for regular users. Turn it off.
Sorry for the incorrect clock speeds I mentioned earlier. I hope this clears things up. Thanks for your help!
Amtsseung :
KYmo :
There’s still no change according to CPUZ. I tested various power plans in Windows and ran Prime95 for stress testing—it reports a strange 3.5Ghz reading. Also, when I set the multiplier to 41 with EIST and Turbo off, it re-enables itself automatically unless I revert the BIOS back to defaults.
My first suggestion was to clear CMOS. Not just restore defaults, but completely wipe all BIOS changes at a hardware level. This will stop random settings from interfering with each other. Check your CPU-Z screenshot—look for the line saying "Multiplier x 16.0 (16-35)". Why 35? The maximum stock clock speed is actually 34. If there was an enhanced turbo mode, it should show 16-38 in the parameters. If you entered a multiplier of 41 and the setting stayed, it should read "Multiplier x 41.0 (16-34)" during load. Something’s off here. Clear CMOS and ensure everything is back to normal before making further adjustments.
As a general tip, keep settings simple—make only necessary changes.
(Also, EIST, Package C-states, and Speedstep are closely linked. Either all on or all off. In your case, keep them on and disable Turbo only. Mixing them can cause unexpected issues.)
The next step is to keep XMP disabled—it’s meant to disrupt BIOS settings, which helps average users but hurts overclockers. Turn it off.
Sorry for the earlier incorrect clock speeds. I hope this clears things up.
Ok, clearing CMOS worked. I switched the Ai Overclock Tuner to "Manual" and set the "CPU Ratio" to 38. CPU-Z now shows the right core speed and multiplier (3.8Ghz 16-38).
I’ll keep experimenting and let you know my findings soon! 😉
So I turned off all the C steps/EIST and changed from offset to manual Vcore Voltage, setting it to 1.25v. This lowered the temperatures by about 9-12°C during a 10-minute Prime95 stress/heat test. I plan to run it for 8 hours to get a more accurate result.
Amteung :
Excited to see it's functioning now.
I completely overlooked that sh*tfest about auto-overclocking tools in general. xD
Yeah lol
Here are my findings so far.
Restored offset to 1.250-1.3v is unstable at x41 and above.
Disabled multiplier, X40 EIST, all C steps, turbo boost (obviously).
Vcore reaches a max of 1.336, hovering between 1.321 and 1.336 under load; temperatures stay below 70.
In Battlefield 1, my CPU is no longer the bottleneck, consistently hitting 100% which is great. Stable 60fps on most maps, only occasional drops here and there on certain maps—my new GPU should handle that!
Thanks again, Amteung sir! I salute you!
Good outcomes though, I’d still look into your H100i model since, honestly, even with that overclock, you shouldn’t expect more than 60°C at most.
Good results achieved, but I’d like to verify your H100i model because honestly, even with that overclock, you shouldn’t be seeing above 60°C. I’ll take a look. How often are you supposed to replace the water? I haven’t changed it since I got it back in November 2015. Thanks for the advice.
KYmo :
I'll check it out—how often should you replace the water? I haven't changed it since I last used it, which was in November 2015. Thanks for the advice.
You don’t just swap the water in an AIO. If your H100i is similar to my old one, it will last about 22 months. After that, the pump will start failing and air will slowly enter the system. The water inside will evaporate very slowly, and the pump could cavitate too.
For context, it used to run at 5.1-5.2ghz @1.66V with FX8320 at 55°C when new. Now it barely handles an idle i5 4460 at the same temperature. It makes a gurgling noise like someone drowning, and the whole thing stays cold all the time.
TL;DR: AIOs will eventually stop working. It’s just inevitable.
amtseung :
kYmo :
I'll check it out—how often should I replace the water? I haven't changed it since I last used it, which was in November 2015. Thanks for the advice.
You don’t just swap the water in an AIO. If your H100i is like my old one, it’ll last about 22 months. After that, the pump will start failing and air will slowly enter the system. Water inside will evaporate very slowly, and the pump could cavitate too.
For context, it used to run at 5.1-5.2ghz @1.66V with FX8320 at 55°C when new. Now it barely handles an idle i5 4460 at the same temperature. It makes a gurgling noise like someone drowning, and everything stays cold.
TL;DR: AIOs will eventually stop working. It’s just time.
Thanks for your reply—I’ll keep monitoring my temps moving forward.