High temps 7700K

Kari- · September 11, 2019

Hi!

So while tinkering with my OC on my 7700K I notice that the temps are quite high I am running it at 4.6Ghz, when doing a Prime95 (small FFT AVX turned off) I average at 85C.

Not sure what my ambient temps are.

Idle temps 38~43C.

Load 85C.

I currently cool the cpu with a NZXT Kraken X72, I’ve re-seated the cooler twice now, re-applied new thermal paste (Arctic Silver 5), made sure that pump is running at max, radiator fans set to performance mode (CPU), Liquid temp doesn’t seem to be going above 33C.

CPU: Intel I7 7700K @ 4.6Ghz[Non De-lidded] (voltage is set to offset mode, also tried with setting it manually) (according to CAM v peaks at 1.22).

Mobo: Asus Strix Z270-E.

Cooler: NZXT Kraken X72 Radiator is Front mounted.

RAM: Corsair Vengeance 16gb DDR4 3000mhz (XMP enabled)

PSU: Corsair RM750X 750W v2.

GPU: EVGA GTX 970.
Case: NZXT H700I

Is it just the a fact that I’ve lost the silicone lottery?

I have not De-lidded the cpu due to me not having neither the knowledge or tools to do so.

I have not updated BIOS if that matters.

Any help is very much appreciated.

Thanks.

Zando_ · September 11, 2019

Silicon lottery is more GHz for the voltage, not really temps (temps go down with lower voltage, so given that silicon lottery winners need less volts for the same GHz, they run cooler as a side effect). That seems fine, Intel CPUs are always toasty when overclocked, and Prime95 typically pushes the CPU much harder than any real world load.

Kari- · September 11, 2019

4 minutes ago, Zando Bob said:

Silicon lottery is more GHz for the voltage, not really temps (temps go down with lower voltage, so given that silicon lottery winners need less volts for the same GHz, they run cooler as a side effect). That seems fine, Intel CPUs are always toasty when overclocked, and Prime95 typically pushes the CPU much harder than any real world load.

Okey, I know that intel tends to run hot but I keep seeing posts where they easily manage 5Ghz on 7700K without even delidding.
I kinda wanna push my computer a bit more just for fun but the temps themselves keep stopping me.

I know that 4.6Ghz is decent but I was hoping to be able to push it a bit further with the AIO...

Would it be worth buying the tool and liquid metal and try to de-lid ?

I'm just kinda scared of ruining my CPU cause then at that point I might aswell buy newer gen.

Mister Woof · September 11, 2019

2 minutes ago, Kari- said:

Okey, I know that intel tends to run hot but I keep seeing posts where they easily manage 5Ghz on 7700K without even delidding.
I kinda wanna push my computer a bit more just for fun but the temps themselves keep stopping me.

I know that 4.6Ghz is decent but I was hoping to be able to push it a bit further with the AIO...

Would it be worth buying the tool and liquid metal and try to de-lid ?

I'm just kinda scared of ruining my CPU cause then at that point I might aswell buy newer gen.

85 in a stress test is perfectly fine, real world would be like mid 60s

Kari- · September 11, 2019

2 minutes ago, Plutosaurus said:

85 in a stress test is perfectly fine, real world would be like mid 60s

I mean its fine if I were to stop at 4.6 Ghz but I wanna keep on pushing but then Ill start reaching temps of 90 and that seems high to me.

Zando_ · September 11, 2019

7 minutes ago, Kari- said:

Okey, I know that intel tends to run hot but I keep seeing posts where they easily manage 5Ghz on 7700K without even delidding.
I kinda wanna push my computer a bit more just for fun but the temps themselves keep stopping me.

I know that 4.6Ghz is decent but I was hoping to be able to push it a bit further with the AIO...

Would it be worth buying the tool and liquid metal and try to de-lid ?

I'm just kinda scared of ruining my CPU cause then at that point I might aswell buy newer gen.

What are they getting that 5Ghz on? IIRC 4.7-4.8 is more common, 5Ghz is a golden chip but not as rare as older gens. You are pushing only 1.22v, the Intel recommended max is 1.35v, and brave lads push up to 1.4v sometimes, so you've got massive, massive voltage headroom (keep in mind some CPUs hit a hard limit and no amount of voltage will push them past that). Your thermals are what's letting you down, and AIOs for pushing CPUs hard are eh, about on par with an NH-D15 (teeny tiny bit behind actually).

If you really want to push OCs then delidding is usually the go-to, but if you mess it up you toast your CPU. Whether that's worth the risk or not is up to you.

5 minutes ago, Plutosaurus said:

85 in a stress test is perfectly fine, real world would be like mid 60s

^^^ My OCed 5820K idles at around 23C (It's in a custom loop with an RVII and 360 + 120mm rads), hits 58-60 max depending on load, Prime95 will still take it into the 80s (I avoid it now because it can damage this specific generation of CPU, so I use ASUS Realbench which pushes closer to real world temps).

Kari- · September 11, 2019

5 minutes ago, Zando Bob said:

What are they getting that 5Ghz on? IIRC 4.7-4.8 is more common, 5Ghz is a golden chip but not as rare as older gens. You are pushing only 1.22v, the Intel recommended max is 1.35v, and brave lads push up to 1.4v sometimes, so you've got massive, massive voltage headroom (keep in mind some CPUs hit a hard limit and no amount of voltage will push them past that). Your thermals are what's letting you down, and AIOs for pushing CPUs hard are eh, about on par with an NH-D15 (teeny tiny bit behind actually).

If you really want to push OCs then delidding is usually the go-to, but if you mess it up you toast your CPU. Whether that's worth the risk or not is up to you.

^^^ My OCed 5820K idles at around 23C (It's in a custom loop with an RVII and 360 + 120mm rads), hits 58-60 max depending on load, Prime95 will still take it into the 80s (I avoid it now because it can damage this specific generation of CPU, so I use ASUS Realbench which pushes closer to real world temps).

Seen people getting 5Ghz on 1.35v, But maybe Ill just have to settle for 4.6Ghz.
I Tried doing realbench R22 but I kept getting the same temps as when doing Prime95.

Anyhow thanks for the help, Its much appreciated!