Question Overclock Intel Core 2 duo E6750 on Stock cooler for E6600
Question Overclock Intel Core 2 duo E6750 on Stock cooler for E6600
Hello, I'm trying to boost my Intel Core 2 duo E6750 to 3 GHz using the E6600 cooler. The setup includes a GT 730 GPU, P35-DS3 rev 2.1 motherboard, DDR2 Kingston 400 MHz RAM and PQI CORP. 300 MHz DDR2 4 GB total. I'm planning to overclock it for fun—my BIOS is F14. Does this work?
You won't gain much from the stock cooler. Perhaps a slight overclock of around 5% would be wasted on the noise, wouldn't it?
I see a problem here. P35 is not able to run the memory slower than the FSB so at stock speed with 1333FSB (it's quad-pumped so 4 x 333) you are already running the DDR2 at least at 333MHz. If that "300MHz" PQI is only DDR2-667 then you'd probably have to either remove it or considerably raise the voltage or lower timings to get it to run at the standard 400MHz of DDR2-800 needed to run at the usual 1600MHz FSB used by Extreme processors.
At 1600, 8 x 400 = 3.2GHz from your E6750 which should only require a minor bump in voltage. Figure on about 68w of actual CPU power consumption, up from the 50w actual of stock (yes, these used much less than their rated 65w TDP, a concept foreign to the Intel of today), which should be pretty warm on the stock cooler but acceptable. It's a pretty unimpressive 500MHz overclock because the stock FSB is too high (better to start with a 800 or 1066 FSB chip if you wish to overclock since those will have higher multipliers) but this is exactly what allows for overclocking on a stock cooler. After all the cooler was designed to handle 65w TDP.
If your GT730 is a Kepler instead of Fermi, then it should overclock like crazy, like +350MHz. If it's Fermi then you would quickly run into the 75w power limit since even at the stock 700MHz it's already at double the wattage of the Kepler at 49w.
I believe it's a Kepler model since I think Kepler models use GDDR5 VRAM and have distinct shapes and appearances!
e6750 default bclk is 333. For serious overclocking you’ll need to raise the PCI frequency, though this comes with a trade-off. The advantage is your RAM multiplier stays low and OC on E6750 doesn’t heavily impact it. There are many factors to consider—try frequencies like 105, 110, 120, 150... PCI freq—and see if your GPU operates normally. If not, you can increase bclk because a PCI freq of 100MHz might lock you at 343MHz. I’m confident this won’t harm SSDs or HDDs when using OC on PCIe, but it could affect the GPU and USB devices. If needed, take a photo of the BIOS setting for MB Intelligent Tweaker and I’ll provide further advice. These instructions should help you with a small overclock. For maximum CPU overclocking, avoid using a 2GB RAM stick—it usually can’t reach 1000MHz and risks data corruption. Stick with 1GB RAM. I recommend Kingston or Kingmax for better performance; they can handle overclocks above 1400MHz without issues, giving you free space at 1400MHz. This is intended for experienced users only.