I basically have a i9 7900x (delidded) a damn hot cpu currently being water cooled by a EK XE 360 radiator with a overclock of 4.6GHz at 1.22 voltage. Am currently hitting 86c on Aida64 (CPU,Cache & FPU Stress) with room temp at 25c. My question is adding a 2nd radiator maybe a 420 will i improve on the load temps? I mean if it's like a 2c or 3c improvement i rather just leave it. I know idle cpu temps cannot drop below ambient temperature but my current idle temps are also in mid 30's to high 30's a bit high also.
More radiator better cooling?
- Thread starter shadow007
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Yes would certainly see an improvement, although how much it is impossible to say. That seems very hot to me though, and although I've not used that CPU personally, for a delid I'd expect quite a bit less. What case/fans do you have? Although it might be a faff, I'd perhaps look at reapplying TIM before I spent a whole load more money, as you really shouldn't be getting temps that high in the first place.
It's just the cpu being water cooled, however when running Aida64 without the "Stress FPU" highest temp is 73c same with prime95 blend highest 73c prime95 small fft's is a different story hitting 100c after a few minutes. The fans are EK Vardar running at 2100rpm
Well something is wrong, might be silly questions, but did you remove the plastic on cpu block ? Or perhap`s it`s a bad mount, try redoing it, one of the best 360 rads with 3 fans runnin full tilt should not have problems with cooling just 1 cpu.
When I first got into watercooling I had 1x thin 360 rad cooling an overclocked and overvolted 980ti and 6700K combo with fans runnin >1000rpm all the time, temps were high but not even close to that high, and that`s just 1 CPU
When I first got into watercooling I had 1x thin 360 rad cooling an overclocked and overvolted 980ti and 6700K combo with fans runnin >1000rpm all the time, temps were high but not even close to that high, and that`s just 1 CPU
To be really honest I did not think anything of the high temps, just thought my 360 radiator is not enough as this is the i9 7900x a very hot cpu but the fact it is delidded. I still thought these are the right temps but I guess am wrong, better sort this out before getting another radiator.
Above are quotes from 8 Pack and myself from a different thread. I tried Prime95 blend test before i tried Aida64 with a 1.22v the highest temp i hit was 72c after 30 minutes. Know i didn't try 1.28v will probably be in the 90's also with prime blend like 8 Pack was. 8 Pack used a EK 360 predator with a delidded i9 7900x.
Please don't think am trying to tell myself that my temps are ok i really appreciate your help and advice it's just based on 8 Pack testing i was thinking my temps are ok but then i tried Aida64 and hit 86c with same 1.22v made me think maybe Aida64 properly tests the cpu and need more radiator.
tbh it souds to me like even when delided getting heat off the 7900's is a near impossible task. However to try to assist better whats your water temperature like? Radiators only cool the water and not the cpu. If the water is still in the early mid 30's then adding more rad space wont fix this issue.
OK UPDATE: Run Aida64 for about 45 minutes with only "Stress CPU" & "Stress cache" options checked left "Stress FPU" unchecked and highest temp reached was 76c with room temp at 25.6c BUT to me the worrying thing is the water temperature checked via a thermometer at least 5 times to be sure put it in the reservoir am getting 97.8c
yes that's 97.8c something definitely wrong. My fittings the water block itself is very very hot. I mean this is a delidded cpu with a 1.22v getting cooled by a EK XE 360 radiator with 3 EK Vardar fans running at 2200rpm surely water temperature can't get this hot? Seems like everything is heating am in my case even the VRM is over 125c even though this is the Asus rampage VI Apex motherboard with a better heat sink.
Its physically impossible for a CPu to be at a LOWER temperature than the medium cooling it, IE in this case the water.
97.8c water temp would MELT plastic tubing and I would think fail most seals in the connectors.
You sure its not 97.8 F which would be approx 36.5 c?
36.5 c to touch will feel warm like the temp say you recently poured a cup of coffee into a cup and left it sat for a minute or two then put your hand on the outside of the cup.
97.8c would mean you would drop it as you just burnt yourself.
regarding 125c VRM's thats possible, are they water cooled or air cooled?
As you have a water cooling kit people often forget you still need decent air movement to cool the none water cooled bits, RAM VRM's SSD's etc
97.8c water temp would MELT plastic tubing and I would think fail most seals in the connectors.
You sure its not 97.8 F which would be approx 36.5 c?
36.5 c to touch will feel warm like the temp say you recently poured a cup of coffee into a cup and left it sat for a minute or two then put your hand on the outside of the cup.
97.8c would mean you would drop it as you just burnt yourself.
regarding 125c VRM's thats possible, are they water cooled or air cooled?
As you have a water cooling kit people often forget you still need decent air movement to cool the none water cooled bits, RAM VRM's SSD's etc
It will still produce the same heat delided it will just be more efficient at getting it away from the cpu and into the water? I hope I'm getting that right.
Aren't the watercooling parts at or over their max temps at 100c? I'm sure some piping says it's only good up to 60c.
Aren't the watercooling parts at or over their max temps at 100c? I'm sure some piping says it's only good up to 60c.
Ok know I look like a REAL GOOF!!!
this is what happens when you don't read instructions. The thermometer has different settings for different thermocouples it has types like K/J/T/E/N/R I had it set on the WRONG type
my thermocouple is type K. Anyways after running Aida64 for about 15 minutes water temperature was at 40c I hope this is ok? But the fact still remains like mentioned before fittings, water block are hot even the radiator is blowing hot air.
Ok know I look like a REAL GOOF!!!this is what happens when you don't read instructions. The thermometer has different settings for different thermocouples it has types like K/J/T/E/N/R I had it set on the WRONG typemy thermocouple is type K. Anyways after running Aida64 for about 15 minutes water temperature was at 40c I hope this is ok? But the fact still remains like mentioned before fittings, water block are hot even the radiator is blowing hot air.
Fitting's tubing etc being warm is normal, at the end of the day the fluid flowing through it will be warmer and the radiator emitting warm heat is also of course normal, that is pretty much its main purpose after all to act as a heat exchange and dump the heat from the loop into the air.
First thing i would check is the delta between ambient and water under load, that will give you an idea of how effective the loop is really. If the delta is fine, then check the block contact, if the contact is fine are fine, then well simply put and this is what I am expecting it really is, its down to the CPU and somewhat expected. This is afterall a 10 core CPU, overclocked and your running stress tests on it. I would say your numbers seem to be fine to be honest. They consume massive amounts of power and in turn generate a lot of heat in such situations.
Under load, my ambient is at 26.c while and water is at 41.c this is after running Aida64 for about 30 minutes.
While not great, is not really an issue then. A delta of 15 degree's means your probably slightly over the capability of that single radiator and adding a second one should help bring water temps down and / or allow you to run the fan's at a lower RPM.
However I would say do not expect a significant drop in CPU temps. Once again we are talking about a CPU which consume's a shed load of power when overclocked and this is in a synthetic stress test.