**Official e8400/e8500 Retail OC Thread

[unclewebb]

Μine before putting 1.45V@4500 was prime stable 4050@1.3V. Now it is not. I advise all of you not to push them beyond 1.3.

I'm trying to learn more about what is hurting these new E8x00 processors. Can you still run Prime at 4050 MHz and how much voltage do you need now?

What was the highest voltage you ever saw in CPU-Z when testing? Did you ever go over 1.45 volts even briefly?

Part of the problem might be the FSB Termination voltage. The Intel spec for these new CPUs is only 1.1 volts +/- 5% so the max is 1.155v. Some of the older boards can't get down this low even at the lowest bios setting. What is your setting for this?

I mentioned this in another thread but it needs to be said again. Here's what the Intel datasheet says about core voltage:

2.6.1 Absolute Maximum and Minimum Ratings

Table 3 specifies absolute maximum and minimum ratings only and lie outside the functional limits of the processor. Within functional operation limits, functionality and long-term reliability can be expected. At conditions outside functional operation condition limits, but within absolute maximum and minimum ratings,

Intel defines Absolute Maximum core voltage for these new 45nm chips as 1.45 volts. That number is not necessarily a safe 24/7 voltage. At 1.45 volts you are "outside the functional limits of the processor" and "neither functionality nor long-term reliability can be expected."