I really need assistance with my OC and Vcore.
I really need assistance with my OC and Vcore.
The specifications include an i5-6600k processor, COOLAIRMASTER 212x cooler, and a rosewell photon 550 gold+ power supply. I aim for at least a 4.2 GHz overclock but don’t know the ideal voltage yet. Current voltage is 1.2 with temperatures acceptable, but I need to determine the best setting. A stress test at 4.2 GHz and 1.2V is available here: https://gyazo.com/e9262fefcad472bca5eecc89ff6ea7cf
Sorry, I ment my Vcore was 1.248 at max load and is set to 1.265 in bios.
That sounds much better.
If you’re stable at 4.3GHz with Vcore at 1.265, raise your multiplier to 44 and check stability. You may need to adjust Vcore further to maintain stability.
If you manage 44 stability, try 45…
Eventually, you’ll encounter OCCT errors or a blue screen. At that stage, you should slightly increase Vcore.
But keep in mind, pushing Vcore too high can lead to temperatures exceeding 80°C.
You’ll need to identify the balance point where you get the highest multiplier, with Vcore around 1.35V or lower, and temps staying under 80°C during stress tests.
Here are the details rephrased:
The specifications include an i5-6600k processor, a COOLAIRMASTER 212x cooler, and a Rosewell photon 550 Gold+ power supply. I aim for at least a 4.2 GHz overclock but am unsure about the ideal voltage setting. Currently it's at 1.2 GHz with temperatures within acceptable limits, though I’m not sure what voltage would be optimal.
I shared a stress test at 4.2 GHz and 1.2 volts:
https://gyazo.com/e9262fefcad472bca5eecc89ff6ea7cf
I’d like to try increasing the frequency to 4.4 GHz but first figure out a solid 4.2 GHz setting. The best voltage depends on your specific CPU and chip design. It seems you only ran AIDA64 for five minutes during the test, which might not be sufficient. Opinions differ on what counts as stable performance and suitable stability testing methods. I prefer OCCT for this purpose.
My advice is:
- Start with CPU-Z to verify BIOS settings and monitor Vcore.
- Use HWMonitor to track core temperatures.
- Run OCCT for stability and maximum temperature checks.
Disable turbo, EIST, and all energy-saving modes while overclocking. Set the multiplier to 42 and run OCCT-Small Blocks for 30 minutes, checking temperatures. If temps stay below 80°C, proceed with OCCT-Large for 3 hours to confirm stability. If you encounter a blue screen or errors in OCCT, gradually increase Vcore until stability is achieved. Once stable at 4.2 GHz, raise the multiplier to 43 and repeat the process.
At some point, you’ll realize that pushing Vcore higher than 1.35V may not be necessary. When you reach the highest stable frequency with the lowest Vcore and temperatures under 80°C, this is your maximum overclock. You can then re-enable EIST and possibly C-1E c-states. With this knowledge, you can apply adaptive voltage and adjust offsets to maintain stability.
Also, while testing, I kept an eye on Vcore via CPU-Z. If it’s 0.01V or higher compared to the BIOS setting, you’re experiencing Vdroop—consider applying some LLC to reduce it without causing Vboost (excessive voltage). Aim for enough LLC to minimize Vdroop but avoid Vboost.
Here are the details you provided, rewritten with varied phrasing while keeping the same length and structure:
The specifications include an i5-6600k processor, a COOLAIRMASTER 212x cooler (an upgraded version of the Evo), and a Rosewell photon 550 Gold+ power supply. I aim for at least a 4.2 GHz overclock but am unsure about the ideal voltage setting. Currently, it's running at 1.2 GHz with temperatures within acceptable limits, though I'm uncertain about the best configuration.
I shared a stress test link at 4.2 GHz and 1.2 volts: https://gyazo.com/e9262fefcad472bca5eecc89ff6ea7cf. I plan to increase the frequency to 4.4 GHz but first need to establish a stable 4.2 GHz baseline.
The optimal voltage depends on your specific CPU model and varies per silicon type. It seems you only ran AIDA64 for five minutes during the test, which may not be sufficient. Opinions differ on what constitutes a stable run, so I prefer using OCCT for more accurate results.
My advice is to enable Load CPU-Z to verify BIOS settings and monitor Vcore, use HWMonitor to track core temperatures, and run OCCT for stability and maximum temperature checks. Disable turbo, EIST, and energy-saving modes during overclocking. Set the multiplier to 42, then run OCCT-Small Blocks for 30 minutes while checking temperatures. If temps stay below 80°C, proceed with OCCT-Large for 3 hours to confirm stability. Adjust Vcore gradually if you encounter a blue screen or errors in OCCT.
Once stable at 4.2 GHz, increase the multiplier to 43 and repeat the process. You may need to raise Vcore until temps exceed 80°C, then reduce it by one. Personally, I avoid exceeding 1.35V on Vcore.
When you reach your maximum stable multiplier with the lowest Vcore and temps under 80°C, you’ve found your optimal OC. You can then re-enable EIST and possibly C-1E c-states. With this knowledge, you can apply adaptive voltage and adjust offsets to maintain stability.
Additionally, while testing, I monitored Vcore in CPU-Z. If it reads 0.01V or higher compared to the BIOS setting, it indicates Vdroop—consider applying some LLC to reduce it without causing Vboost (excessive voltage).
A few more questions: How do I disable turbo during these tests? Does it actually improve performance? How much LLC should I add? My current voltage is 1.25V, which drops to 1.247V in OCCT testing. What is EIST? Also, with a three-hour stress test, my PC never exceeded 60°C.
Blayzify your thoughts on turbo and its benefits, wondering if it really boosts performance. How much LLC should I include? My voltage is set at 1.25, but it drops to 1.247 when idle and 1.17 during OCCT tests. What’s EIST? Also, during a 3-hour stress test, my PC never exceeded 60°C. Turning off turbo during OC helps maintain stable settings. You want to avoid fluctuations in frequency and voltage while you’re optimizing for the highest stable speed. Setting Vcore at 1.25 means actual voltage is 1.247 at idle, but it falls to 1.17 under load—a drop of 0.077Vdroop. Add enough LLC so Vdroop approaches zero without causing big Vboosts. EIST stands for Enhanced Intel SpeedStep, a power and thermal management system by Intel that reduces Vcore and frequency when not fully loaded. Disable it during OC to keep full control. Which test did you run for temperature monitoring? OCCT-Small works well for quick checks, while OCCT-Large is better for stability—3 hours is ideal for long-term checks.
burnhamjs :
Blayzify :
Turbocharge and why is this necessary? Does it really speed up my system?
How much LLC should I install? My voltage is set at 1.25, but it drops to 1.247 when idle and only 1.17 during OCCT testing.
What does EIST stand for?
Also, during a 3-hour stress test, my PC never exceeded 60°C.
Turn off the turbo while you’re optimizing so you can manage all settings. You don’t want your frequencies or voltage fluctuating while you’re trying to find the most stable speed.
Setting Vcore at 1.25 means the actual voltage is 1.247 when idle, but it drops to 1.17 under load—a drop of 0.077Vdroop.
Add enough LLC so that the droop is closer to zero, but avoid large boosts either.
EIST is Intel’s Enhanced SpeedStep technology for power and thermal control. It reduces Vcore and frequency when not fully loaded.
When you’re optimizing, you should disable EIST to keep full control over parameters.
Which test did you run for three hours to monitor temperatures? OCCT-Small works well for quick checks—usually a 30-minute test is enough. OCCT-Large is better for stability—3 hours is ideal.
So, how much LLC should I add?
And when I reach a stable clock, should I turn boost back on?
And how do I disable EIST?
Also yes, I completed the stress test exactly as you instructed.
How much LLC should I include and when should I turn boost back on once stability is achieved? Also, how do I disable EIST? Yes, I completed the stress test exactly as instructed. Check your BIOS (or the motherboard manual) to find instructions for turning off Turbo and IEST, along with C-states. It’s unclear what LLC levels are available—start with the mid-range and see if vcore stays consistent during idle and under load. What type of motherboard do you have?
how much llc should i add and when should i restart boost back after finding a stable clock? also how do i disable eist? yes i ran the stress test exactly as you instructed. you should check your bios (or the motherboard manual) to learn how to turn off turbo, iest, and c-states. i’m not sure what llc options are available for you. start with the mid-level and see if vcore stays the same at idle and under load. what motherboard do you have?