7700K @ 5ghz z270 OC Stability Assistance
7700K @ 5ghz z270 OC Stability Assistance
Hello everyone!
I wanted to share some updates about my OC.
To start with, I have a 5GHz 7700k chipset that I've removed the casing from for temperature monitoring and updated the BIOS.
At first, I expected stability thanks to an offset voltage of around 1.360, but I encountered crashes during gaming.
Now I'm using a manual setting at 1.350, with LLC 6. The full configuration is shown in the screenshots below. Prime95 has run stably for over an hour on large FFTs (though more testing is needed), but realbench (specifically the lux mark) crashes have occurred. I suspect this might be due to driver issues, as the display appears to freeze briefly. The GPU itself seems fine.
Under stress temperatures reached 67-70°C.
Images: http://imgur.com/a/Jgw5d
Manual Vcore: 1.35 (CPUZ shows 1.36 under stress)
CPU LLC: 6
CPU Current: 140%
AVX offset: 3
All cores at 50x
AI Overlock tuner: Manual
BLK 100
Multicore enhancement: 0
CPU Core/Cache current limit: 255.50
DRAM Volt: 1.35
DRAM speed: 3000
Other CPU voltages are auto-adjusted (e.g., SA)
Power limits:
Long: 4095
Package: 127
Short: 3095
DRAM timings follow manufacturer specs
If this setup remains stable, it looks promising. However, VCCIO and SA Auto voltages are quite high.
I’m hoping to enable downclocking or downvolting when idle, but the offset isn’t stable at these or higher voltages!
Any advice would be appreciated. (I’m guessing you’d suggest “Use Adaptive,” though I haven’t managed that successfully—overvoltages usually cause problems.)
Thanks!
1.42v is just the standard voltage needed for 5ghz performance. Your CPU might still be struggling or even not capable of reaching that speed.
Using liquid metal instead of paste could help you get cooler temperatures, probably by more than 50°C.
On my 3770k @4.6ghz with 1.42v, I see temperatures in the 80-90s with regular paste and around the early 70s with liquid ultra. I've tried various pastes like noctua and Arctic mx-4, but liquid metal performs much better under an IHS and works well with just mx-4 on top for simplicity.
AvengerUK :
The Imgur link isn't working for me either. It looks like your 'binned 1.35v binned CPU' setting isn't stable at that voltage. Usually, a 7700k needs about 1.42v to run properly.
The imgur link isn't functioning properly for me too. It seems your 'binned 1.35v binned cpu' settings aren't stable at the voltage you're using. Typically, a 7700k needs around 1.42v to run at 5ghz, so you should use a strong cooler if you're increasing the voltage on a CPU already at 70°C. Also, could you share the paste you used for your delidded CPU? What motherboard are you running? Which cooler are you using? Which site suggested binning your CPU for 1.35v @5ghz?
The imgur link isn't functioning properly for me too. It seems your 'binned 1.35v binned cpu' might not be stable at the voltage you're using. Usually, a 7700k needs around 1.42v to run at 5ghz, so you should have a good cooler if you're increasing the voltage on a CPU already at 70°C max. Also, what type of paste did you apply? Which motherboard are you using? What cooler are you running? Which site suggested binning your CPU for 1.35v @5ghz?
Using GX Xtreme with a Predator AIO cooler, my motherboard is an Asus Srix 270h, purchased from OCUK. I'm currently stressing it at Adaptive 1.350 with an offset of +0.002, which in Prime95 shows 1.376 in CPU-Z—stable so far (about an hour in testing). For non-Prime95 apps, it's around 1.360. 1.42v isn't something I'm comfortable with.
1.42v is merely the standard voltage needed for 5ghz performance. It's possible your CPU isn't suited for it or may not even reach that speed.
Your paste choice isn't optimal for a delid; liquid metal would be better, and you likely won't notice a significant temperature drop beyond a few degrees cooler.
On my 3770k @4.6ghz with 1.42v, I observe temperatures in the 80-90s using regular paste, while early 70s with liquid ultra. I've tried various pastes such as noctua and Arctic mx-4, but liquid metal performs much better under an IHS and works well with mx-4 on top for simpler use.
AvengerUK :
The image link isn't functioning for me either. It seems your 'binned 1.35v binned CPU' isn't stable at that voltage. Generally, a 7700k needs around 1.42v to run at 5ghz, so you should ensure a reliable cooler if you're increasing the voltage on a CPU already near 70°C.
Also, what paste did you use for your delidded CPU? Which motherboard are you using? What cooler are you employing? Which site suggested a binned CPU for 1.35v @5ghz?
Using GX Xtreme with a Predator AIO cooler, my setup is an Asus Srix 270h, purchased from OCUK.
Currently, I'm stressing it at Adaptive 1.350 with offset+0.002, which in Prime95 shows as 1.376 in CPU-Z—so far stable, around 1.360 for non-Prime95 apps. We'll see...
Honestly, 1.42v isn't something I'd prefer.