Is my i7 8700K okay after running for 2 minutes with no cooler?

[BigRecoiilz]

Out of curiosity, I ran my i7 8700k for a couple minutes without a cooler (2 case fans with glass panel off) using integrated graphics. I quickly booted up NZXT CAM and the cpu was at 99 C the whole time (about 2 mins). Is the CPU okay? I turned the system off by the way, it didn't shut off.

[exhaustedbrit]

It's not healthy but CPUs these days are designed to aggressively throttle within their safe operating envelopes, this is the premise behind having a package power limit/turbo system etc. Generally speaking 99C is fine, it's not a higher number because your CPU knows it's not safe to go beyond that, the thermometer can go way beyond 99C. In fact many laptops/systems that run quiet/passively do so at 90C+ and are generally fine for many years.

[BigRecoiilz]

Just now, exhaustedbrit said:

It's not healthy but CPUs these days are designed to aggressively throttle within their safe operating envelopes, this is the premise behind having a package power limit. Generally speaking 99C is fine, it's not a higher number because your CPU knows it's not safe to go beyond that, the thermometer can go way beyond 99C. In fact many laptops/systems that run quiet/passively do so at 90C+ and are generally fine for many years.

Oh yea i forgot to mention that I heard some small crackling sounds too like the CPU was literally frying.

[WhitetailAni]

Just now, exhaustedbrit said:

Generally speaking 99C is fine

No, it's not,

85-90C is hot, 90-95C is really hot, and 96C+ is dangerous.

 

[exhaustedbrit]

Just now, TTV BigRecoiilz said:

Oh yea i forgot to mention that I heard some small crackling sounds too like the CPU was literally frying.

That's less convincing, could be water vapour hitting the IHS but could indicate some other problem. Though it goes without saying, whilst it's possible, you should have a cooler on a desktop CPU.

[BigRecoiilz]

1 minute ago, exhaustedbrit said:

That's less convincing, could be water vapour hitting the IHS but could indicate some other problem. Though it goes without saying, whilst it's possible, you should have a cooler on a desktop CPU.

my cooler is on the way i was just wondering if i could run my pc safely in the mean time

[BetteBalterZen]

1 minute ago, TTV BigRecoiilz said:

my cooler is on the way i was just wondering if i could run my pc safely in the mean time

Do not use your PC / CPU without a cooler. 

[exhaustedbrit]

2 minutes ago, FakeKGB said:

No, it's not,

85-90C is hot, 90-95C is really hot, and 96C+ is dangerous.

 

0C is hot, 10C is hotter, having a CPU run at 99C for extended periods indicates a thermal/power problem yes.

But for a few minutes? Many features within modern processors are literally designed to make use of limited thermal envelopes to get extra performance, almost every laptop CPU I know of does this. If 99C was not safe for a short moment, laptops would not do this on a regularly basis by design.

[exhaustedbrit]

2 minutes ago, TTV BigRecoiilz said:

my cooler is on the way i was just wondering if i could run my pc safely in the mean time

No - don't do that. Thermal and power envelopes for modern desktop processors are a feature, it will thermal throttle but no cooler is too low of an envelope to operate within safely for an extended period. 

[Zando_]

1 minute ago, exhaustedbrit said:

If 99C was not safe for a short moment, laptops would not do this on a regularly basis by design.

^^^ And Intel wouldn't spec a tj max of 100C (for most chips, including the 8700K) if 99C was unsafe .

[Analog]

19 minutes ago, TTV BigRecoiilz said:

my cooler is on the way i was just wondering if i could run my pc safely in the mean time

 

Most definitely not! You can't run a processor without a proper cooler. Regarding your question, if you seriously ran it for two strait minutes, even if by some miracle that processor still works, it has probably been seriously degraded. Keep in mind that some motherboards don't read past 99C so in theory the actual temperature could be much higher than that, and it probably was. 

 

Just out of curiosity why did you ignore the BIOS warning that the CPU fan was not detected and decided it was a good idea to run without a cooler in the first place

[exhaustedbrit]

6 minutes ago, Analog said:

some motherboards don't read past 99C

CPU temperature is measured by many solid state thermometers within the CPU silicon itself, they can read far beyond 99C as is required to deliver Turbo Boost and Thermal Velocity Boost, among other features baked into the CPU.

[Analog]

5 minutes ago, exhaustedbrit said:

CPU temperature is measured by many solid state thermometers within the CPU silicon itself, they can read far beyond 99C as is required to deliver Turbo Boost and Thermal Velocity Boost, among other features baked into the CPU.

 

True that, I didn't really use the correct words here. What I meant to say is that temperature reporting after 99C can be somewhat unreliable. 

[Mister Woof]

1 hour ago, TTV BigRecoiilz said:

Out of curiosity, I ran my i7 8700k for a couple minutes without a cooler