Overclock and BIOS issue
Overclock and BIOS issue
Hello everyone. I'm facing an issue but couldn't locate a solution. I have a Xeon X5450 processor and an Asus P5B motherboard. When I overclock it to around 3.50 GHz, the computer makes a long three short beeps when I turn it on. It doesn't cause problems in games or stress tests, but sometimes it won't open and I have to reset the BIOS. I've tried different graphics cards and changed the RAM, but I'm not sure what's causing this. Thank you for your help.
So, a socket 771 CPU in a 775 motherboard with a modification for it. Of course, it's been one of the top chipsets available, offering numerous customization options.
There hasn't been official support from Intel for the 771-to-775 transition, and as far as I recall, many users rely on BIOS microcodes combined with the mechanical 4-cut method to tailor their systems correctly. Some individuals who follow this path have occasionally reported odd problems when using 771 with 775 combinations.
You might want to check if a more suitable BIOS microcode exists, depending on what you were using for the modification. Alternatively, you could obtain the newest BIOS version and manually inject the correct microcode via tools like cpu-z.
So a socket 771 CPU in a 775 motherboard with a mod for it is fine. It's definitely one of the top chipsets available at the time, offering plenty of customization options. However, there hasn't been official support from Intel for the 771-to-775 transition, and many users have relied on BIOS microcodes combined with the mechanical 4-cut method to tailor their systems properly. Some people still report odd problems when using combinations of 771 and 775.
You might want to check if a more suitable BIOS microcode exists, depending on what mod you used. It could also help to get the latest BIOS version and manually inject the correct microcode via tools like cpu-z. At least these are the thoughts that come to mind.
In fact, I had a similar experience earlier this month. I adjusted the BIOS delays to higher settings, which usually worked on 6-6-6-18. I also rearranged the sticks one by one and performed restarts while changing the RAM order—some sticks just needed to be closer to the CPU somehow. But I’m using a 775 CPU with stock RAM, and the CPUs aren’t overclocked.
Some useful links:
- https://www.youtube.com/watch?v=2bxcSJjrzsA
- https://www.delidded.com/lga-771-xeon-microcode/