Good temps?

agnes

agnes

agnes

Soldato
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Running 2x EK 360 PE rads with Noctua NF A12x25. All fans run at around 1250 rpm in game. 800rpm idle. D5 pump running at 55% (2350rpm). No other case fans, bottom radiator pulls in cold air, top radiator exhausts the warm air. All in a Lian Li PC-O11 Dynamic XL.

Anyway, so the loop goes pump/res > rad > GPU > CPU > rad > pump/res. My CPU is OC'd to 4.8Ghz with 1.3v on the core (8700k delid), my GPU is a EVGA 2080 ti XC Ultra which is OC with +160 on the core and +1000 to memory, 130% power target.

My CPU package sits solid at 65C with max peaks at 70C and my GPU 55C after very long sessions but never much higher in a room with an ambient temp of 23C.

I think the CPU is a little high? GPU not so much, liquid temp is unknown but the above numbers are on a solid load to both the GPU and CPU, I've a liquid temp sensor, I've not not installed it yet.
 
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Seems about right - typically the GPU temp tracks liquid temp quite closely. For instance mine caps out at 53°C. Whereas the CPU has more of a delta from water temp to silicon temp. This is partly because of the extra thermal interfaces from silicon, through a TIM to the heatspreader then more TIM to the block. That's 2 extra heat transfer relationships compared to GPU die under a block.

But also that temperature difference seems releated to CPU heat production - under load it jumps, remove the load and the chip is closer to water temp again. And the gap seems bigger with higher voltage and clock speeds. Heavily overclocked chips seem to sit 20-25° over water temp under load, whereas at stock was more like 10 for me.

8700k at 4.8 is a fairly big heat load, so the main factor is "are the temperatures ok for me?". 65 I'd be ok with, hitting 70 I may look at additional cooling or voltage tweaking.
 
just looking back at overclocks with the 8700k and at 1.3v you should be able to hit 5ghz in most cases, ppl have got lucky and run said cpu's at 4.8ghz 24/7 with around 1.26v and had pretty decent temps, i'd say your voltage is a tad high, but it all comes to the silicone lottery and you may have lost and bought a chip that will overclock but needs more volts to do so.

only way to find out is to head into the bios and slowly back down the voltage until you hit instability with in windows, i'd say you could drop the voltage a bit maybe around 1.28v, you may get lucky and run lower but you'd have to test to find that out
 
Considering the design of the case, and the airflow being only provided by the fans used for the radiators, which, even if on push/pull won't be as efficient for airflow as a fan without any restrictions to overcome, seems fine.
Tried here, just the bottom and top fans (push pull, Phanteks 140mm, 420mm rad top, 280mmrad bottom), temperatures for CPU (despite being another platform, but just as an idea) and GPU don't suffer much even under load. The main problem is the lack of decent airflow for VRM, PCH and M.2/NVME.
But even adding, if it was possible, more fans, the temperatures won't be much better than the ones you're getting.
The CPU runs hot, as I can see, at least using your voltages, and the GPU, considering the overclock, is as expected.
 
Thanks all, I lost the silicone lottery big time with my 8700k, I've tried so many times to lower the v core but anything below 1.3 at 4.8ghz is just not stable. My wife's got the same cpu but doesn't oc... And I've delid hers... I wonder.........
 
agnes said:
Thanks all, I lost the silicone lottery big time with my 8700k, I've tried so many times to lower the v core but anything below 1.3 at 4.8ghz is just not stable. My wife's got the same cpu but doesn't oc... And I've delid hers... I wonder.........
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LOL worth a shot do the old switch-a-roo, if she doesn't oc then no harm no foul XD
 
wookiee87 said:
LOL worth a shot do the old switch-a-roo, if she doesn't oc then no harm no foul XD
Click to expand...

She's playing PoE right now, I was like 'hey, I'm gonna install the AIO for you today, and swap our our CPU's...'

'Hold up a minute, what?' lol. Needless to say, I don't think she minds as she literally runs it at stock.

LuckyBenski said:
What speed is the RAM running at?
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XMP II profile, 3200mhz, but let me triple check.
 
Ok, something is up, running 4.8 at 1.3 vcore and within 30 seconds one or two threads fails in P95... Something is up. I'm thinking the CPU is on it's way out.
 
Yep, CPU needs 1.325 to stay solid at 4.8Ghz... I think it's time to upgrade to a 9900k... Last stress test which only ran for a few minutes got me to a max CPU package pf 77C with 75C being the average.
 
2 years @1.3v?, if so thats had a good run.

maybe worth swapping it out for your wifes cpu, as if you run yours at stock speed it should still work, if not then the cpu may be on the way out
 
wookiee87 said:
2 years @1.3v?, if so that had a good run.

maybe worth swapping it out for your wifes cpu, as if you run yours at stock speed it should still work, if not then the cpu may be on the way out
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I agree, I mean it ran at 1.275 for a long time, towards the end of last year, I had to bump it to 1.3, now I'm at 1.325... So, I have a feeling it's run it's course.

Annoying as I just setup the new WC hardline loop so will have to drain to fit the new CPU. But, it's time. Off I go to buy a 9900k!
 
i'd still swap out cpu's first, use yours at stock in your wifes pc and see what hers does in yours, if your wifes pc develops issues at stock with your cpu then you can look at a new cpu, mobo combo.

if you do the swap and everythings good then you dont need to spend a pretty penny upgrading a 9900k and board will be the best part of £700 ish.

you may be able to run a 9th gen chip on your board via a bios update but looking online and it seems that there are vrm temp concerns due to the extra cores, if you plan to overclock, i'd advise active cooling or watercooling on the vrm's with a 9900k

what mobo do you have atm?
 
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wookiee87 said:
i'd still swap out cpu's first, use yours at stock in your wifes pc and see what hers does in yours, if your wifes pc develops issues at stock with your cpu then you can look at a new cpu, mobo combo.

if you do the swap and everythings good then you dont need to spend a pretty penny upgrading a 9900k and board will be the best part of £700 ish.

you may be able to run a 9th gen chip on your board via a bios update but looking online and it seems that there are vrm temp concerns due to the extra cores, if you plan to overclock, i'd advise active cooling or watercooling on the vrm's with a 9900k

what mobo do you have atm?
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LuckyBenski said:
No need to get a new board for 9900k though.
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My wifes 1080 ti is also acting up, I'd rather not risk making her PC even less stable if my CPU starts to throw a tantrum.

I'm about to head into San Francisco, Best Buy has one left in stock, just placed an order on it for pickup. Time for an upgrade! Plus, I need to drain my loop and install the liquid temp sensor and flow meter anyway, new liquid being delivered today. I can also make an attempt at bending some more tubes as some of them are less than ideal haha.

Also, I have a Z390-E motherboard, I thought I'd get it to future proof, it seems it was a good move.

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