Personal computing discussed
Moderators: renee, Starfalcon
flyxman007 wrote:HERETIC wrote:Leave your RAM voltage on AUTO for now.
Experiment with lowering your POWER LIMIT.
Thanks. i tried that with no luck. limit the power limit 1 to 65 W, leave ram AUTO, the max TDP is capped to 65w and power liimit hit is reported. whatever power limit I set, it will hit that when running intel extreme utility to stress the CPU. The core frequency dropped by a lot.
another people's 8700 is just using 77 TDP at max.
i tried voltage 1.285, ran aida 64, system froze.
There isnot many things i can chaning in bios. i think i have tried all the poosible choice i can think of now.
i am seriously suspecting my i7-8700 is defective. I will see what Intel will say. I am going to contact ASRock raegarding this too. Howevrer, it looks like either get replacement or switch to AMD platform such as 1700.
i am using low profile Noctua L9i CPU Cooler with a case fan to cool thr CPU. it is capble to keep it under 80 in Aida64 test if i set the power limit 1 to 95w, and keep the pc quiet. this 8700 is more like a 8700k in terms of power consumption to me.
bthylafh wrote:Yeah, that's an awfully small cooler for such a CPU. It's probably less effective than Intel's stock HSF.
Mentawl wrote:https://noctua.at/en/nh_l9i_tdp_guidelines
I would give serious consideration to switching to a different cooler, if the physical dimensions of your case etc permit. If you go to Asrock or Intel and say "I'm using this cooler, which has this list of caveats and disclaimers attached to it", they'll point to that and say that's the problem. Even Noctua themselves say that the cooler is only usable on 65w TDP chips on four assumptions:That you're using the supplied fan (you said you're using a case fan rather than Noctua's fan)
... and that any deviations from this ideal set of conditions means you should chose a lower TDP CPU.
Allowing the supplied fan to run at 100% under PWM control where necessary.
Have a well ventilated case.
Have a 25c or lower ambient.
Mentawl wrote:Intel's Datasheet for the 8th Gen CPUs (https://www.intel.co.uk/content/www/uk/ ... vol-1.html) :
flyxman007 wrote:I am still not sure about that. I am not expecting it use 65W when running at 4.6Hz, but I am not expecting it use 117W either.
HERETIC wrote:AGAIN- TDP is an approximate of the power wasted by a CPU-converted in to heat.
NOT-TOTAL POWER USAGE..................
just brew it! wrote:HERETIC wrote:AGAIN- TDP is an approximate of the power wasted by a CPU-converted in to heat.
NOT-TOTAL POWER USAGE..................
Umm... other than power used to drive the external interfaces (RAM and PCIe), all of the power consumed by the CPU is converted into heat that needs to be removed by the CPU HSF.
HERETIC wrote:just brew it! wrote:HERETIC wrote:AGAIN- TDP is an approximate of the power wasted by a CPU-converted in to heat.
NOT-TOTAL POWER USAGE..................
Umm... other than power used to drive the external interfaces (RAM and PCIe), all of the power consumed by the CPU is converted into heat that needs to be removed by the CPU HSF.
No argument that the voltage drop across those millions/billions of transistors ends up as heat.
There are outputs through,and while links to SB and DVI/HDMI might not draw much-they do.
Perhaps a little pedantic,my point was TPU will always be more than TDP (waste power)
Could be a couple of Watts,could be several-perhaps some day someone will come up with a No.
bthylafh wrote:If you're not going to listen to our advice, what's the point of asking?
HERETIC wrote:No argument that the voltage drop across those millions/billions of transistors ends up as heat.
Perhaps a little pedantic,my point was TPU will always be more than TDP (waste power)
Could be a couple of Watts,could be several-perhaps some day someone will come up with a No.
HERETIC wrote:8700 and a 1080Ti in a HTPC case-without water.
YOU DO LIKE A CHALLENGE DON'T YOU.
HERETIC wrote:8700 and a 1080Ti in a HTPC case-without water.
YOU DO LIKE A CHALLENGE DON'T YOU.
My advice-downclock/undervolt both a LITTLE to match the case/cooling system you have---ENJOY.
Another option is to get a larger case..........
All silicon is a lottery-some chips are better than others........................
MOSFET wrote:I understand you have a small case, but why did you select such a hot-spot CPU for such a small case, and then cool it with such small cooling? It's like you want it to throttle.
curtisb wrote:Heat pipes don't work that way. They are actually copper tubes (or pipes if you will) that have a liquid in them.
HERETIC wrote:8700 and a 1080Ti in a HTPC case-without water.
YOU DO LIKE A CHALLENGE DON'T YOU.
Atradeimos wrote:curtisb wrote:Heat pipes don't work that way. They are actually copper tubes (or pipes if you will) that have a liquid in them.
Wanted to post here to lol at this, then did some background reading and
just brew it! wrote:It is basically a closed-loop heat pump which uses the energy of the heat you are trying to remove to drive the loop...
Atradeimos wrote:I'll give it another shot and reseat the heatsink this evening, then start another thread if it doesn't work.
Atradeimos wrote:Seems like calling it "air cooling" is really underselling the whole thing.
Atradeimos wrote:just brew it! wrote:It is basically a closed-loop heat pump which uses the energy of the heat you are trying to remove to drive the loop...
Seems like calling it "air cooling" is really underselling the whole thing.