High temps on new 2950X build

[BeedooX]

New to these forums, so hi!

 

I've just built a new system around the Threadripper 2950X and ASUS ROG Zenith Extreme motherboard. Apart from flashing the BIOS and setting the 64GB ram to 2666MHZ, the BIOS is pretty much default settings.

 

Some time ago, I bought a Swiftech H240 X2 prestige liquid cooling kit which has a 280mm radiator and 2 x 140mm noise blocker fans, and which I used with my older 5930K build. I've now re-used this on my Threadripper build, but flushed and primed the system and installed the massive Heatkiller Pro IV water block, connecting the pump-side tubing to the water block 'in' port and installed completely new coolant.

 

Last night around 10.30pm when I finished the build, the ambient air temps reported 25c but it felt cooler. At that time, the Ryzen master software was reporting 35c at idle. The issue then was that any CPU usage was causing drastic spikes in temperature and fan noise - so I decided to reinstall the water block this morning (following the HardOCP TIM application method for the Noctura NT-H1 TIM).

 

After reinstalling, and with obviously higher daytime ambient temps (29c), the idle temp of the CPU is 43c. Just because is was the closest thing to hand, I ran a CPUZ stress test and the CPU temp gets to 67c and stays there, and the CPU is running at its base speed of 3.5GHz. I expect the motherboard / CPU is thottling at ~67/68c which is fine, I just would have expected better from all the other stories I've read of peoples CPU temps with this processor.

 

Is there anything standing out as wrong - or maybe the rest of the Swiftech kit just doesn't cut it? Perhaps default BIOS settings are not the best for CPU voltage maybe...

 

 

[Fasauceome]

7 minutes ago, BeedooX said:

expect the motherboard / CPU is thottling at ~67/68c

Why? 68 is not that high for a synthetic stress test, I think it's a rather good temperature. What makes you think it's throttling?

[BeedooX]

Thanks for responding. I think it's throttling at ~67/68c because from what I've read, that's supposedly the upper limit temperature for this CPU? - plus the CPU drops to 3.5Ghz across all cores so I figure the loop wasn't doing enough to dissipate the heat.

[Princess Luna]

1 hour ago, BeedooX said:

Swiftech H240 X2 

That looks like something I'd never use to cool a 2950X myself... besides are you sure its 280mm? I could swear they top at 240mm.

 

Either ways I'd buy an actual good cooler since you're spending so much money and grab the NH-D15

[BeedooX]

Nah it's definitely 280mm - and I did a quick search on the NH-D15, which didn't under limited investigation, seemed to not be compatible with the 2950X.

 

Anyway, seems it's possible the Thermaltake C1000 coolant might be to blame.

 

Four days after the build, I noticed the tubing, pump and reservoir developing opaque staining on the surface. After a bit of searching, it seems people are warning against using this coolant due to pigment separation - and TT seems to have issued an apology for that.

 

After a couple of hours of flushing out the system out with distilled water, then only (for now) re-filling with distilled water, and re-seating the CPU for the 3rd time, my idle temps are stable at 5-6c above ambient - much better.

[ewitte]

On mine at least unless you specify a clock speed it will drop clocks to maintain 68C but on water you should always be over the specified base clock rate (which is 3.5Ghz).  So AMD wouldn't call it "throttle" if you don't drop below 3.5Ghz.  I will say air vs proper liquid cooling you should be 300Mhz+.  The absolute worse I get with a 300W PBO setting is 3.8-3.9Ghz on custom water.  At 68C.  I can specify 4.15Ghz and it will climb to about 85+C but 80-85C is where these chips start to lose stability (unlike 90C+ for Intel).

[ewitte]

2 hours ago, BeedooX said:

Nah it's definitely 280mm .

Who is the marketing genius who put the number 240 in the name for a 280mm radiator?

[BeedooX]

19 hours ago, ewitte said:

On mine at least unless you specify a clock speed it will drop clocks to maintain 68C but on water you should always be over the specified base clock rate (which is 3.5Ghz).  So AMD wouldn't call it "throttle" if you don't drop below 3.5Ghz.  I will say air vs proper liquid cooling you should be 300Mhz+.  The absolute worse I get with a 300W PBO setting is 3.8-3.9Ghz on custom water.  At 68C.  I can specify 4.15Ghz and it will climb to about 85+C but 80-85C is where these chips start to lose stability (unlike 90C+ for Intel).

Thanks for your input. Yeah that naming convention, right? 240 = 2 fans at 140...

 

Anyway, temps are definitely sorted. Using Handbrake to convert one of my old DVDs, it's having a job hitting 61c with all cores at 4.1Ghz (according to Ryzen Master) and ambient temps of 28c.

[ewitte]

Handbrake only utilizes like 30% CPU for me I was able to get much better encodes testing with Premier(trial) and Resolve 15 (the free version).  So I'm pretty much in the 50s for temperature.