4770k holds up well under stress tests yet shows issues in most games.
4770k holds up well under stress tests yet shows issues in most games.
Hi everyone, I own a rather outdated CPU. It’s actually the oldest part of my PC – a Core i7 4770K and an Asus Maximus VI Hero. About four years ago, when I first got this chip, I attempted to overclock it and managed only to reach 4.3 Stable. I made numerous adjustments, but the processor would freeze during testing. Realizing I’d lost a lot on a lottery, I decided to stop overclocking and let it run at its original speeds for the past few years.
Recently, while exploring BIOS settings, I tried Asus CPU step-up and achieved 4.2 GHz. Surprisingly, the CPU remained stable. I used a Thermaltake Frio advanced CPU cooler.
I also ran Aida64 CPU stress tests: 60 minutes at full speed was stable; 20 minutes with FSB reached extreme temperatures (almost 90°C) but stayed stable; and an Intel burn test was consistent. Handbrake’s encoding test for 5 minutes at 4K still worked fine; Timespy confirmed stability, and Firestrike all three tests passed.
These results gave me a strong sense that my CPU is functioning well. I spent about five hours running various tests. The next day, I played Fallout 4 for 15 minutes and then experienced a BSOD. After restarting, it ran again but another BSOD occurred within five minutes. Games like Mass Effect: Andromeda also triggered BSODs. Mostly older titles worked, though.
This made me realize that these stability tests are misleading. They push the CPU to 100% and generate intense heat, but they don’t reflect real-world usage. In Fallout 4, my CPU temperature was around 55°C when it crashed, so heat wasn’t the problem.
Any thoughts on what might be going wrong? I’ve checked the voltage readings, and the maximum is 1.215V. Could it be a low voltage issue?
Your overclock isn't stable, consider trying -100 mhz.
Long answer: synthetic tests often don't reflect actual usage like gaming does. Still, you might try lowering your core clock by 100mhz and check the results. I experienced similar problems with my i7-6700k—reached 4.8ghz in synthetics but faced constant BSODs in real life. My suggestion is to use Asus Realbench for about eight hours, which I've found to be the most effective stress test.
Mikeandike:
Short answer: your overclock isn’t stable, try -100 mhz.
Long answer: synthetic tests don’t really reflect real-world use, especially for gaming. Perhaps lowering your core clock to 100mhz and checking performance would help. I attempted to overclock my i7-6700k, reached 4.8ghz in tests, but in practice it caused constant BSODs. My suggestion is to run Asus Realbench for about eight hours as a stress test. I believe this gives the most accurate results. If your CPU can’t sustain 4.2 GHz at 1.215V, it’s likely a very poor chip. This made me realize why I stopped trying to overclock it four years ago. I once thought Asus overclocking could fix everything, but I’m not an expert and have only done basic tweaks.
Sohaib shared his experience discussing the stability of overclocking. He mentioned trying to lower the core clock to 100mhz and noted similar problems in real-world usage. He advised using Asus Realbench for extended testing and emphasized that if a CPU struggles to reach 4.2 GHz at certain parameters, it may indicate a poor design. He also recalled his own attempts with the i7-6700k, where synthetic results didn’t match actual performance issues. Overclocking is described as risky, with outcomes varying widely due to manufacturing differences.
Well here are two options: either reduce the frequency by 100mhz or increase the voltage. I understand your concerns about losing the silicon lottery—my 4690k required around 1.3v just to stay stable at 4.3GHz, and 4.4GHz needed 1.38v.
Edit: Make sure you’re overclocking one component at a time. I made that mistake before and it took me two months to fix. My advice is to start with core overclocking, ensuring full stability before adjusting Ring/Uncore and RAM. Keep those at stock values while working on the core. Once you’re 200% confident the core runs smoothly, proceed with uncore separately. Finally, test the RAM. But I’m sure you already know this.
TwilightRavens :
There are two options, either reduce the frequency by 100mhz or increase the voltage. I understand your concerns about giving up on the silicon lottery; my 4690k needed around 1.3v to remain stable at 4.3GHz and 4.4GHz was 1.38.
Edit: Another point is to ensure you're overclocking one component at a time. I made that mistake before and it took me two months to resolve. What I mean is begin with core overclocking, making sure it's fully stable before touching Ring/Uncore and RAM. Keep those at stock settings while working on the core. Once you're 200% confident the core clock is steady, proceed with uncore separately. Finally, tackle RAM. But I'm sure you already know this.
Edit #2: The most effective stress test would be whatever the system was designed for—if it's gaming, run a few hours of different games over several days. I've remained 100% stable in Prime95 for 24 hours, only to encounter a blue screen after about 5 minutes in Fallout 4.
Yeah, I did apply optimized defaults before attempting to overclock the CPU so everything ran at stock speed.
I've now reverted my CPU back to stock. It's not worth investing hours on a 4-year-old processor running at 200mhz. Since I play at 4K resolution, boosting CPU performance isn't usually necessary. I hope my next CPU purchase offers more overclocking potential than my current one. The MSI 980 I owned in SLI performed exceptionally well before I overclocked it.