Can't push Intel Core 2 Duo E8500 to 3.16GHz when it's already unlocked; need urgent assistance
Can't push Intel Core 2 Duo E8500 to 3.16GHz when it's already unlocked; need urgent assistance
Hey everyone,
To be frank, I’ve been experiencing some of the worst days lately. It’s been a few months trying to push my Core 2 Duo E8500 up to 3.16 GHz, and the CPU has already unlocked. I even invested in water cooling to avoid overheating issues, but the main issue is that during overclocking, it appears fine in the BIOS. When I go into M.I.T in BIOS to boost my CPU to 4.0 GHz, I adjust the voltages up to 1.3, but every time I save and exit, the PC fails to boot—repeating this for about 4 to 5 times with a black screen, and when I re-enter M.I.T in BIOS again, I get a red alert warning about boot failures due to higher voltages or overclocking. This problem has been frustrating since I joined on April 14, 2016, and it still persists.
Can anyone help me? Why do people who watch YouTube videos about similar setups not face any issues? It seems like the motherboard limits the voltage to 1.2V for the CPU, but I already have M.I.T enabled in BIOS and the CPU is unlocked. Or should I adjust my RAM settings as well? I’ve heard that if I want to overclock a Core 2 Duo CPU, I need to also overclock the RAM, but doing so often causes boot failures and forces the system back to default. Also, once I installed Gigabyte Easy Tuner 6, the PC would freeze and require a restart.
Please let me know what I should do next—thank you!
So far it seems to have been looking good up to 344FSB. Interesting. At this stage, return to your settings for 343x9.5. Maintain the System Memory voltage at 1.5V, which should suffice. Before adjusting the RAM timings, it would be best to run Memtest with the CPU set to 343x9.5. The sudden change in FSB is too drastic and causes boot failures. I suspect there might be an issue with the RAM, so running Memtest could help. If errors appear, we can attempt to manually adjust the timings or even loosen them. It’s also possible one of the RAM sticks is faulty, even under default settings. For now, just proceed...
Ensure the Intel EIST is turned off along with C2/C2E Support. Adjust the PCI Express Frequency to Auto and set it to 100 initially, avoiding any overclocking of the PCIe Bridge. Mixing RAM modules isn't beneficial; when you perform OC, update the "System Memory Multiplier" to preserve the original RAM speed. If further OC is needed, verify the stable state with RAM at its default speed before proceeding. For now, set the voltage to 1.24v, or leave it at 1.2 if unavailable. These steps were necessary to achieve a stable OC of a Q8400 up to 3.2ghz on another motherboard.
Martell1977 :
Verify that Intel EIST is turned off along with C2/C2E Support. Also, disable the PCI Express Frequency on Auto and set it to 100 initially. Avoid overclocking the PCIe Bridge. Mixing RAM modules isn't beneficial; when you overclock, adjust the "System Memory Multiplier" to preserve the original RAM speed. If you plan to overclock further, ensure you know the stable setting with RAM at its default speed. For now, set the voltage to 1.24v, or leave it at 1.2 if needed. These steps were necessary to achieve a stable OC of a Q8400 up to 3.2ghz on another board.
When adjusting the CPU multiplier, the RAM may automatically update its settings. I noted this point. Have you adjusted the PCIe configuration? It might help to reduce the OC speed from 4ghz to around 3.4 or 3.6 and gradually increase it. Keep in mind that not all CPUs perform equally, and your CPU might not reach 4ghz. Alternatively, the motherboard could be limiting, as some forums mention this board isn't ideal for overclocking.
You're suggesting reducing the frequency from 4GHz, but the actual issue is that I'm unable to increase the frequency further. From 3.16GHz with auto-PCIE enabled, raising it to 95 still didn't help. The problem lies in the CPU voltage control—when the Vcore is set to 1.3 or higher, the voltage doesn't respond properly, and M.I.T. indicates that frequency increase isn't supported.
We're aligned on this. The stock level is 3.16, and you're aiming for an OC to 4ghz and 1.3v. You might have seen online that these values are achievable or that your motherboard supports them. I recommend starting with a more modest overclock and gradually increasing the settings. With PCIe disabled at 100mhz, it's possible you're hitting a hardware limitation rather than just voltage issues. Just because others succeeded doesn't guarantee the same result for you. This situation is often called the silicon lottery. It seems the motherboard might be the limiting factor, even if it offers the voltage option.
I’m uncertain about your RAM specifications, speed, and timings—ideally provide the details, including part numbers. The type of RAM affects overclocking capabilities.
Your motherboard isn’t ideal for overclocking, and the power supply I’d recommend isn’t suitable either.
You seem to have several issues with your current setup that could prevent you from reaching 4GHz, even if your CPU is capable.
I own a Gigabyte P35-DS3R model with at least 11 modules, whereas yours only has 6 total. I also have an Intel E8600 that successfully reached 4 GHz without much trouble. I use an aftermarket cooler, but I can’t recall the exact model due to time passing and memory fading.
Still, I retain the original computer; after a price drop, I upgraded it to an Intel Extreme processor for around $260. My E8600 is now in its original retail condition, with the fan and all components intact, simply sitting on a shelf. I never used the stock Intel fan because I overclocked the E8600 from the start.
There are some techniques for overclocking, but they come with no guarantees—just as Martell1977 mentioned. Consider removing one RAM stick and disconnecting unnecessary peripherals to reduce power demands on both the power supply and motherboard. Run the CPU at its default speed and gradually lower the RAM voltage until stability is slightly affected, then incrementally increase it by 0.01 volts until you regain consistency.
RAM voltage plays a role in overclocking due to the additional stress it places on the motherboard’s circuitry, which your system is particularly sensitive to.
Taking these points into account, raise the CPU voltage (Vcore) to approximately 1.365, then incrementally increase the frequency in steps of 100MHz—starting from around 3.16 to 3.26, and continue until instability appears. Monitor temperatures using HWiNFO.
For a quick stability test, download and install CPUID CPU-Z and HWiNFO64 (or the 32-bit version if needed). Once in Windows, keep adjusting the CPU frequency, reopen both tools each time, and attempt to launch them. If you reach a point where Windows won’t open, reboot and enter BIOS to lower Vcore by 0.015 volts, then perform a stress test.
Before stressing your CPU, ensure CPUID CPU-Z is running; if not, download Sisoftware Sandra Lite (free version) and run the Arithmetic burn-in. Follow the on-screen instructions: select Burn-In, adjust settings, click save, name the burn-in, and complete the process. After finishing, check for a purple checkmark at the bottom to confirm success.
Keep monitoring CPU temperatures throughout the testing.
If you pass the burn-in phase, return to BIOS and gradually reduce Vcore by 0.005 volts each time, reopening CPUID CPU-Z and HWiNFO each cycle. Continue this process until stable.
Please share your findings here.
Hey Martell and danra,
Thanks a lot for your help—it really means a lot. I attempted the steps you suggested, but the issue remains: my motherboard only allows an increased voltage of 1.23750V, which is the stock level, and even when I tried to raise the RAM voltage slightly beyond that, the same problem occurred. Someone mentioned my motherboard has limited capabilities, so I looked up alternatives. The Asus P5G41T-M LX you linked seems to have an Asus turbo key, but does that support my E8500 CPU?
Please let me know if I should continue following this thread or post the results.
Thanks again for everything!
For good overclocking performance, you should consider a board featuring Intel's X48 or P45 chipset. Ensure it also supports DDR3.
The ASUS model you mentioned appears to be seen as a board with restricted overclocking capabilities and limited voltage control.