5930k oc to 4ghz with 1.125 vcore
5930k oc to 4ghz with 1.125 vcore
Hello guys!
I just overclocked my cpu (from stock 3.5 ghz) to 4 ghz using 40x multiplier and 1.125 vcore. Now i have 2 questions about the overclock:
1. I ran a stability test on RealBench for 1 hour and the max temp hit 58 C with my Cryorig R1 Ultimate set at 100% fan speed. How do i know i picked the right voltage? The end result of the stress test was "Test succesfuly passed". Shoud i try to lower it to 1.12 instead of 1.125 and see how it works? Some time ago i overclocked it to 4ghz with 1.1v but a friend of mine told me that is way too low to be stable and not crash
2. This is really, like really wierd question but..my temps before the oc were 28-29 idle and 48-49 while gaming. After OC they dropped to 25-26 idle and 43-45 while gaming (same pc, same cooler, same fan speed, same room temp). I don't get it. Also, the temps between cores are more stable now, the difference between the cooler and the hottest core being 3-4 C. Before the OC the difference was 6-7 C or even more. Can someone explain me why is this going on? Because i have no rational idea about it. Thank you
Andrei Shaq also shared his experience. His voltage remains steady at 1.125 consistently. Does it decrease when the PC is idle? That depends on the settings you set for voltage. Using "manual" should prevent any drop. Some X99 boards support "adaptive" mode, which lets the voltage adjust during low load or idle times. My motherboard supports adaptive, but I’m not sure how to enable it. I think I need to find a stable "manual" or "fixed" voltage first before using adaptive. Would that 1.125 voltage affect the CPU over time if it stays at that level constantly? No, it shouldn’t cause any damage. In fact, it’s quite low for Haswell E. This is what I used with my 6950X at 4.4...
Andrei_shaq:
Hello everyone!
I recently increased my CPU's clock speed from the stock 3.5 GHz to 4 GHz using a 40x multiplier and a 1.125 Vcore. I have two questions regarding this overclock:
1. I performed a stability test on RealBench for an hour, and the maximum temperature reached was 58°C with my Cryorig R1 Ultimate running at full fan speed. How can I be sure I chose the correct voltage? The result of the stress test was "Test successfully passed". Would it be better to try lowering it to 1.12 instead of 1.125 and see how it performs? Some time ago, I overclocked it to 4 GHz with 1.1V, but a friend warned me that this is probably too low for stability and could cause crashes.
2. This seems like an unusual question, but... my temperatures before overclocking were between 28-29°C idle and 48-49°C while gaming. After the overclock, they dropped to 25-26°C idle and 43-45°C during games (same PC, cooler, fan speed, room temperature). I’m confused. Also, the temperature differences between cores are more consistent now, with a gap of just 3-4°C instead of 6-7°C or more before the change. Can someone explain why this is happening? I don’t have any logical explanation. Thank you.
With your settings on auto in BIOS, it’s likely the CPU was operating at a higher voltage than the one you set for the 4.0 overclock. Therefore, it’s probably running slightly cooler but at a higher clock speed.
It’s always wise to run at the lowest possible voltage. However, RealBench isn’t an ideal stability test. Consider using OCCT or AIDA64 for at least two hours.
Gradually reduce your Vcore until it shows signs of instability, changing one setting at a time. Once it becomes unstable, raise your Vcore to the most stable level, possibly two levels higher.
If this is your first build, the issue might be due to thermal paste degradation. This is typical—temperatures drop slightly over time as the paste melts and spreads better. A higher OC could have accelerated cooling. If it’s not a fresh build, consider whether room temperature was different or if your fans (assuming they’re thermal) are running faster. With a higher clock speed, tasks complete quicker, reducing overall heat even during idle periods.
Vellinious :
Andrei_shaq :
Hello everyone!
I just increased my CPU's speed from the stock 3.5 ghz to 4 ghz using a 40x multiplier and a 1.125 vcore. I have two questions about this change:
1. I performed a stability test on RealBench for an hour, and the maximum temperature reached was 58°C with my Cryorig R1 Ultimate at full fan speed. How can I be sure I chose the correct voltage? The result of the stress test was "Test successfully passed". Would it help to try lowering it to 1.12 instead of 1.125 and see what happens? A few months ago, I overclocked it to 4ghz with a 1.1v setting, but a friend told me that's probably too low for stability and could cause crashes.
2. This seems like an odd question, but... my temperatures before overclocking were between 28-29°C idle and 48-49°C while gaming. After the OC, they dropped to 25-26°C idle and 43-45°C during games (same PC, same cooler, same fan speed, same room temperature). I’m confused. Also, the temperature differences between cores are more consistent now, with a gap of just 3-4°C instead of 6-7°C or more before. Can someone explain why this is happening? I don’t have any logical explanation. Thanks.
personally I rely on Intel burn test for stability too, and it gives good outcomes. You should run it for a few hours after you think you've reached a stable voltage (at the highest setting). For fine-tuning your Vcore, up to 20 trials are acceptable at most. Since it's an AVX workload, there will be an AVX offset on X99 series chips. It's helpful to experiment with overclocking, but for thorough stability checks, another method would be better.
My thermal paste is quite fresh, I replaced it with my cooler about a month ago after the leak. Following that, I changed it to a Cryorig Air solution from R1 Ultimate. The thermal compound is still new (Noctua NT-H1). Considering the temperature readings makes more sense now. I was also thinking about the issue with the cooling hole affecting temperatures. Also, remember before changing things the auto Vcore usually pushes a higher voltage than needed. I plan to lower my voltage to 1.12 to test it. Other users have used voltages between 1.115 and 1.150 for 4GHz, so I should be within that range somewhere.
Andrei shares his experience with the new thermal paste he installed recently, along with his cooler. He changed it after a leak incident and used a Cryorig Air solution from R1 Ultimate. The improved thermal compound is Noctua NT-H1. He also notes the temperature issues are now clearer, mentioning that auto Vcore tends to increase voltage unnecessarily. He plans to adjust his voltage to 1.12 to test the situation. Other users have reported similar results using voltages between 1.115 and 1.150 for 4GHz. He acknowledges that some motherboards run higher than ideal, but all seem to perform poorly.
I use an Asus x99-s mobo. What stress test should I do? I heard prime95 is not good for this model. I’m not very familiar with overclocking and sometimes I might sound a bit silly, but I really need some guidance. I don’t want anything more than 4ghz atm, because it’s hot outside and room temperatures can rise to 32°C on warm days—I just want my PC to stay cool. I just want to find the best vcore for that frequency and let it work its magic. 😀