Attempting to reduce CPU clock speed
Attempting to reduce CPU clock speed
Hi! I see the issue with your AMD Phenom II x6 1405T. When you lower the speed from 225 to 210 with a 14.5 multiplier, it seems like the CPU resets back to 225 instead of staying at the new speed. Your motherboard is an MSI gaming 970. The problem might be related to how the BIOS or firmware handles the overclocking settings after changing the multiplier. It could also depend on the stability of the current configuration. You might want to try adjusting the settings gradually and checking for any warnings or errors during startup.
From my notes, I recall using the Overclocking guide on Overclock.net, which includes useful details about Overclocking Phenom II.
Check this link for more information:
https://www.overclock.net/forum/13-amd-g...guide.html
It’s worth looking through.
If you’re entering the right settings and saving before exiting in BIOS, I can’t clarify why the system won’t accept the Overclock.
I also came across a discussion about the 840T issue on Reddit:
https://www.reddit.com/r/overclocking/co...9_ghz_95w/
Hi Tristan
There are two methods to adjust your CPU frequency. One involves raising the BCLK, while the other changes the multiplier. For example, using 200bclk with a 14.5x multiplier gives you 2900Mhz, keeping the base clock at its default. Clearing the CMOS and testing with 200bclk and a 15x multiplier results in 3000MHz, which should be possible unless cooling is insufficient, likely due to temperature concerns.
MeanMachine41 :
Hi Tristan
There are two methods to adjust your CPU frequency. One involves raising your BCLK, while the other is modifying the multiplier. For example, using 200bclk with a 14.5x multiplier equals 2900Mhz, keeping the base clock at default. Trying 200bclk and a 15x multiplier gives 3000MHz, but this didn’t work in Windows. When loading into BIOS it returned 225, so it can’t go higher or lower. I set it to 200mhz on a 15x and got 3000MHz, but in Windows it only showed 3.25GHz. Adjusting the multiplier to 3.6GHz worked in BIOS but not in Windows. Lowering the multiplier to 14 and running at 3.15GHz succeeded on a 225MHz board.
Uncertain about why your Base clock resets to 225 even after saving, unless your BIOS is faulty, then removing the CMOS should resolve it. Consider re-flashing your BIOS if you haven't already. I've also noticed that a minor adjustment in NB voltage aids when boosting fsb.
Unknown issue with Base clock resetting to 225 after saving, possibly due to a corrupt BIOS. Clearing CMOS might have resolved it. Consider re-flashing the BIOS if needed. A small increase in NB voltage seems beneficial for boosting fsb. Apologies for not replying; I went to bed and was very tired. I plan to remove the CMOS battery, unplug the power supply for 10 minutes, then reinstall it to check if it helps. I already have the latest BIOS (m.4) on the MSI Gaming 970, so this shouldn't be the problem. Reading somewhere suggests this CPU can reach up to 3.25 GHz, and even at that, it shouldn't be locked. Right?
Back then I had the same CPU many moons ago, starting at 3.2GHz, and I installed an AIO H105 as my first water cooler, which brought it up to 3.6GHz. That shows the CPU is overclockable.
I plan to look into the BIOS settings for your CPU and motherboard combination once you manage to clear the CMOS.
If you adjust anything in BIOS, please let me know.
MeantMachine41 shared their experience about having the same CPU many years ago, initially clocked at 3.2GHz, and later installing an AIO H105 water cooler which increased it to 3.6GHz. They noted that the CPU is overclockable. They plan to check the BIOS settings for the specific CPU and motherboard combination once they clear the CMOS. They also mentioned making any changes in BIOS and asking for advice on why the system wouldn't accept an overclock even after clearing CMOS and setting it to 3.4GHz.
From my notes, I recall using the Overclocking guide on Overclock.net, which includes useful details about Overclocking Phenom II.
Check this link for more information:
https://www.overclock.net/forum/13-amd-g...guide.html
It’s worth looking through.
If you’re entering the right settings and saving before exiting in BIOS, I can’t clarify why the system won’t accept the Overclock.
I also came across a discussion about the 840T issue on Reddit:
https://www.reddit.com/r/overclocking/co...9_ghz_95w/