Question Temperature changes and AIO ?

[LeVzi]

So it had been a while since I changed the paste on my 5900X , and today I decided to try Arctic MX6 where as before i've always used Thermal Grizzly Kryonaut.

All seems well, although idle temps are slightly higher between 40 and 45 (Current idle after running Prime95) and while running Prime95 small FFT's , the temp at max load is a LOT less than the Kryonaut, barely maxed out at 75. Kryonaut idles were 35-40 and max was 80+ never over 90.

I had read that MX6 is really for when the system is under max load, thats when it shines, so I think I can gather thats the case here, are these temps what ppl would expect too ? I am relatively happy but just wanted peace of mind.

Also, my AIO is coming up on 3 years old, working fine, NXT (I can't remember which model off hand tbh) but how often should they be changed ? When they break down or a certain time frame ?

I would assume its a case of if it's not broken don't fix it.

Just for reference I tried also the penta dot paste application, seems to have been very good.

 

[beyondlogic]

So it had been a while since I changed the paste on my 5900X , and today I decided to try Arctic MX6 where as before i've always used Thermal Grizzly Kryonaut.

All seems well, although idle temps are slightly higher between 40 and 45 (Current idle after running Prime95) and while running Prime95 small FFT's , the temp at max load is a LOT less than the Kryonaut, barely maxed out at 75. Kryonaut idles were 35-40 and max was 80+ never over 90.

I had read that MX6 is really for when the system is under max load, thats when it shines, so I think I can gather thats the case here, are these temps what ppl would expect too ? I am relatively happy but just wanted peace of mind.

Also, my AIO is coming up on 3 years old, working fine, NXT (I can't remember which model off hand tbh) but how often should they be changed ? When they break down or a certain time frame ?

I would assume its a case of if it's not broken don't fix it.

Just for reference I tried also the penta dot paste application, seems to have been very good.

Aio are generally ok for 5 years is kind of the point they start degrading. Depends on radiator thickness and amount of fluid it started with. But usually after 5 years it's about keeping an eye for signs.
Premature failure can happen if it's not installed correctly e.g where the pump is higher then the radiator radiator should always be higher. Unless pump is built into the radiator.

Mx6 and mx4 are both like that usually high er then normal idle but usually at high loads does better.

 

[LeVzi]

Aio are generally ok for 5 years is kind of the point they start degrading. Depends on radiator thickness and amount of fluid it started with. But usually after 5 years it's about keeping an eye for signs.
Premature failure can happen if it's not installed correctly e.g where the pump is higher then the radiator radiator should always be higher. Unless pump is built into the radiator.

Mx6 and mx4 are both like that usually high er then normal idle but usually at high loads does better.

Thanks for that , got a few years before I need to worry .

And the MX6 certainly works hard as the temp goes up , I might be able to have a small overclock I have some thermal headroom

 

[beyondlogic]

Thanks for that , got a few years before I need to worry .

And the MX6 certainly works hard as the temp goes up , I might be able to have a small overclock I have some thermal headroom

With those chips there already at Max at 1.5v is usually there ceiling any higher degrades the chip there 2 CPUs under that 1 die glued together. The extra boost that amds CPUs get manually from the board are usually pushing CPU to there limit.

Mx6 also is thicker so it may need to be changed more regularly I find thicker pastes yield better results but can be prone to more dry out then others. I found using mx6 in high heat load situations e.g 105w or higher it didn't last as long as least from my own testing. Thermal grizzly works great but you need like a 2g tube of the stuff to spread properly cause it's tacky and doesn't like to leave the spatula.

Common issues with 5900x and above.

Voltage issued of 1.5 and higher at stock.

On air easily hits 90 not recommended for air cooling. Even dropping voltage it doesn't play nice. This is due to the 2 dies over saturating the heatsink. Even on water cooling 240 these chips can hit about 88c on stock. I had to undervolt mine to 1.35v to be happy with temps my own preference.

Sometimes needs to have certain memory clocked down to 3000 to be stable if using 4 sticks of ram

 

[LeVzi]

I won't bother then, I remember trying it once, using PBO2 and it never took well, so tbh I am happy as I am.

Thanks

 

[CountMike]

I won't bother then, I remember trying it once, using PBO2 and it never took well, so tbh I am happy as I am.

Thanks

If so inclined, you could tweak PBO. Enabling it, it would just set defaults as BIOS developer and MB manufacturers deemed right with maximums set according to AMD recommendations, PBO enables many more options for tweaking settings.

 

[geofelt]

"I would assume its a case of if it's not broken don't fix it."
Truth.

An aio pump, being a mechanical device may simply wear out or get clogged.
Air will intrude through the flexible cooling tubes and eventually the system will need to be replaced. I would have the expectation of 5 years life.
Unless the pump fails, you should get a gradual warning that it is time to replace the unit.