Question about I7-8700k with 5ghz OC
Question about I7-8700k with 5ghz OC
Hey there.
I'm just starting out with OC and haven't done it before on a CPU. But since I got an 8700k, I thought it wouldn't be a waste of money (it's a letter K). However, the processor is still quite costly for my budget, so I don't want to take unnecessary risks.
I'd really appreciate it if someone with more experience could share their thoughts and let me know if I'm in a safe range.
I've updated the CPU to 5ghz, adjusting both core clock and uncore clock in BIOS to 50. After about 15 minutes of stress testing, the temperatures stabilized: CPU around 84°C, VRM at 42°C, and Vcore at 1.36V. Am I okay to keep going? Are there any other signs I should watch for? I ran it at full fan speed—2xAP181, 2xAP122, and a Noctua 15 PWM unit.
I've attached a screenshot for more details.
Thanks.
There appears to be an issue with the CPU-Z score displayed on the screen. The expected value for a 5GHz i7 8700K should be near 4300, not 987.7. It might be related to throttling.
Everyone, it's a bit unusual. The benchmarks are lower than expected for single thread—541/550—and only slightly above on multi-core—3900/3700. Additionally, the temperatures at 87°C come from afterburner's highest core temperature (ranging between 82 and 87), but Gigabyte lists the package at 77°C. I think I'll need to do some more research.
It might not be as reliable as you assume. I recommend using [email protected], lowering the voltage by 0.005 each time if it fails, and retesting until issues appear. Then continue with the last successful setting.
Stock 8700K specs run smoothly at 4.3 GHz, not 5 GHz... definitely, the 1.37V is a big factor in your temperatures...
85C is quite high, and that's mainly due to CPU:U-Z/stress, which is just as intense as any game, but less so than Prime95, so maybe a balance between all-core 4.7 GHz would be a good starting point... consider trying 1.3V, then 1.28V, etc...
Don't rush to test at the Golden Altar of 5 GHz right away...
(Not every 8700K model reaches full stability, and in your situation, temperatures could become a problem quickly...)
Your motherboard might have a 95 Watt TDP limit that could affect your work, possibly requiring it to be turned off to avoid throttling... proceed at your own risk.
I’d also feel drawn to leave all the tiny Gigabytes in Windows software OC tools behind in favor of Intel’s reliable XTU… (which works well, and restores everything to normal if it crashes)