Please verify the voltage levels.
Please verify the voltage levels.
I've maintained a stable 4.2ghz for more than four to five years using the following settings:
Vcore: 1.35V
QPI: 1.38V
DRAM: 1.64V
All speedsteps, spectrum disabled. HT also turned off since temperatures are lower and it doesn't impact gaming performance.
I opted to push it further to 4.4GHZ. I recall trying this a while ago and giving up because it didn't improve my game by even a fraction. Now I'm unsure why I did it today—driven by the hope that my computer would run faster. I recently purchased two GTX680 units with 4GB each, but I was a bit worried about running Assetto Corsa with spars grid.
Someone could review the details below and confirm if this is safe, especially since I'm currently stable at 4.4GHZ.
When Intel introduced the first 45 nanometer architecture in the final version of Core 2 socket 775 processors, their voltage rating was a modest 1,3625 volts. The following generation brought the 1st Generation Core i Socket 1366 models, like the i7 920, raising the voltage to 1.375 volts. When Intel released the last 45 nanometer Socket 1156 chips, they once again set the voltage to 1.4 volts.
The i7 920 does not belong to the "Duo" series, which includes the earlier Core 2 Duo or Core 2 Quad with 65 and 45 nanometer designs.
This processor operates on a 45 nanometer architecture. The highest recommended Vcore for such processors is 1.400 volts.
Your current Vcore exceeds this limit, which may affect the processor's lifespan.
Higher Vcore levels can cause excessive temperatures, leading to faster "Electromigration."
This condition can damage the traces and junctions inside the chip layers and nano-circuits. Over time, this may cause more frequent blue-screen errors.
Electromigration becomes a greater risk with each generation of die-shrink, making the 22 nanometer design less forgiving of over-voltage.
However, Vcore settings should stay within these guidelines:
- Core 2
1st Gen 65nm ... 1.50 Vcore
2nd Gen 45nm ... 1.40 Vcore
- Core i
1st Gen 45nm ... 1.40 Vcore
2nd Gen 32nm ... 1.35 Vcore
3rd Gen 22nm ... 1.30 Vcore
4th Gen 22nm ... 1.30 Vcore
OK, so you're using a "D0" stepping setup. That makes more sense. The "D0" offers better overclocking compared to the "C0". Since you've been running it at 1.35 volts for years, it's lasted well without issues.
We operate in a world of standards and specs. I don't fabricate these figures. If you decide to run it at 1.46 volts, proceed, but be ready to face processor performance drops as mentioned earlier.
No one enjoys hearing this, but the only advice I can give is to note that the gap between 4.4 and 4.2 is just 4.7%. Is it really worth sacrificing your processor's lifespan?
The actual spec is 1.375 volts. Check the source for details:
http://ark.intel.com/products/37147/Inte...-Intel-QPI
CompuTronix clarifies that Intel's specifications are actually 1.375 volts. You can verify this link: http://ark.intel.com/products/37147/Inte...-Intel-QPI. I've lowered my clock speed to 4.2ghz and wonder if 1.38QPI is still acceptable.
Here is a revised version of your text:
When Intel introduced the first 45 nanometer architecture in the final version of Core 2 socket 775 processors, their voltage rating was a modest 1,3625 volts. The next generation, the 1st Generation Core i Socket 1366 models—like the i7 920—raised the specification to 1.375 volts. With the release of the last 45 nanometer Socket 1156 processors, Intel once again set the voltage to 1.4 volts.
I recognize your desire for maximum overclocking performance and understand the drive for speed! 😊
Have you considered trying a 4.3 MHz setting?
Because the final 100MHz of an overclock demands the biggest jump in Vcore, such as moving from 4.3 to 4.4 volts, you might be able to maintain stability at 4.3 with a Vcore of 1.4 volts and still achieve good results.
Here’s my perspective:
If you’re currently at 4.2 with a 1.35 Vcore, adding another 50 millivolts should bring you up to 4.3 at 1.4 Vcore. The final 100MHz jump from 4.3 to 4.4 requires about 60 millivolts, which exceeds the recommended maximum of 1.46 volts.
Since your temperatures are comfortably within limits and aren’t restricting performance, staying under 1.4 volts should let you push your clock up to 4.3GHz safely without issues.
I know it’s not quite 4.4, but it’s a reasonable middle ground. I just wanted to avoid risking any damage.
You're a great moderator. Keep the positive momentum going. Running Prime again for an hour on 4.2 always feels like it's about to finish on 4.2.
I remember that vibe when I was pushing overclock limits and checking Prime95 to catch any pesky errors, so I stick with 4.2.
I think the configuration I made back in 2010/11 is still solid—makes you feel confident.