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i9 7920X hitting 95-100 degrees...

shrek2

shrek2

shrek2

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Joined
11 Sep 2005
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Nottingham
Hi
I have just built the computer in my sig.
I have overclocked the first 6 cores to 4.7 and the other 6 are at 4.5.
When playing flight simulator, temperatures are hitting 95-100 degrees. I have a be quiet! silent loop 280mm.
With my 5820K at 4.7, temps are around 80 degrees.
What I want know is it safe to run at those temperatures?
Thanks
 
Nope it's not delided?? Whatever that is?
According to one of the monitoring programs I use it's pulling over 275 W.
I've increased the throttling point in the bios to 103 degrees but I really don't know how safe it is for 24/7 usage.
 
shrek2 said:
Nope it's not delided?? Whatever that is?
According to one of the monitoring programs I use it's pulling over 275 W.
I've increased the throttling point in the bios to 103 degrees but I really don't know how safe it is for 24/7 usage.
Click to expand...

Deliding the chip is the removal of the heat spreader (metal cap of the cpu) and replacing the thermal paste with liquid metal and not for the novice overclocker.

I'll put this bluntly to save you wasting your time and others, Increasing the throttle point is NOT a good idea for 24/7 use (or for any length of time for that matter)

You have a £1000 chip and a mickey mouse liquid cooler, either build yourself a proper custom water loop or dial the overclock and volts back to something an off the shelf cooler can handle, however even if you custom watercooled you likely to be limited by thermals until you delid it anyway.
 
shrek2 said:
Nope it's not delided?? Whatever that is?
According to one of the monitoring programs I use it's pulling over 275 W.
I've increased the throttling point in the bios to 103 degrees but I really don't know how safe it is for 24/7 usage.
Click to expand...
You will seriously reduce the lifespan of your chip, using this 24/7.
Like Darket said invest in some decent cooling or dial back the overclock
 
darket said:
I'll put this bluntly to save you wasting your time and others, Increasing the throttle point is NOT a good idea for 24/7 use (or for any length of time for that matter)

You have a £1000 chip and a mickey mouse liquid cooler, either build yourself a proper custom water loop or dial the overclock and volts back to something an off the shelf cooler can handle, however even if you custom watercooled you likely to be limited by thermals until you delid it anyway.
Click to expand...

I agree. Was trying to think of a polite way of saying something similar and failed. So I'll give you a +1! ;)
 
I suppose that because it is the thermal interface between the cores and the heatspreader dictating temperature that even a peltier between the spreader and the AIO plate would be useless? It also adds 40-100W to the system load.
 
As others have mentioned, your temps are too high for 24/7 use IMO. Delidding that chip will help enormously if your overclocking. Difference between a 7980XE stock and my delidded 7980XE was on the order of 15-20 degrees under load which is significant, with the amount of power these CPU's can pull. Your cooler will do okay, but really its the poor TIM used in the CPU preventing heat from efficiently escaping. Can't compare your temps to your 5820k, that uses massively less power and also is a soldered CPU (CPU's are either soldered or use TIM)

For overclocking are you adjusting voltages on a per core basis (so the lower cores use less volts), if not, I would as it will shave power and look to dropping your overclock down a notch all together, say 4 cores @ 4.6 GHz and 8 cores @ 4.4 GHz.
 
With Intel's latest CPU's as soon as you increase the voltage temperature becoems an issue, I suspect the point of Intel using TIM is to dissuade users from raising voltages, you'd need to delid/replace TIM and then lose warranty to get decent temperatures with higher voltages.

IMO the best thing to do is to keep voltage stock and just overclock to 4.2-4.4 on that it's still faster than any current AMD chip, albeit more expensive.
 
I would expect to need significantly better cooling than a 280 AIO to keep 12 core CPU cool with an aggressive overclock. 275W is a huge amount of power draw. I run a 360 custom loop on my 8 core at a lower clock.
 
I don't think size of heatsink is the problem even with the 12 core chips, the primary issue is that heat isn't transferred away from the die fast enough, once you go over a particular TDP (which is quickly done with increased voltage) the TIM becomes a major bottleneck.
 
Ok Thanks for the helpful replies.
I will order the de lidding tool from ocuk and some Thermal Grizzly Conductonaut.
Only problem is the tool is almost £80 for something I will use only once.
I think I will just dial down the overclock to 4.5 for the first 6 cores and 4.3 for the other 6 for the time being.
 
I think you need to lower the voltage and look at improving the cooling as 100c is way too hot IMO.

I was looking at the 7980 but decided against it as they really required some pretty extreme levels of cooling to get a decent overclock.
 
1. delid your cpu (rockit cool, easy one)
2. build custom water cooling
3. if u can afford 7920x u can easily afford to send it for deliding
 
I'd look more at improving air flow and removing any heat getting picked up from the rest of the system. Dealing with the heat the graphics card is dumping into the case would help.

What case are you using?
 
my 7900 runs at 100c most of the time while rendering, the "hot" core gets to 120c if left unchecked. That's with an EKWB Pheonix 360mm rad, 6 fans in push pull and multiple remounts (I also tried another 360mm rad, different paste and even tried a different cpu months back to make sure it wasn't user error - it wasn't. I do have an RMA open with Overclockers to send the cpu back, but as I use my computer for my livelyhood/work and I need it to pay my rent and bills it's been on the back burner. I've ran it this way now for 2 months and it's been fine but has just started running into problem. My suggestion would be put it on the "get it sorted ASAP" pile, but don't worry too much about it as you're seeing cooler temps than I am.
 
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