Analyzing Threadripper Thermals: Big Base Cooling Wins
by E. Fylladitakis on March 14, 2018 8:30 AM EST- Posted in
- CPUs
- AMD
- Cases/Cooling/PSUs
- Noctua
- ThreadRipper
- 1950X
- CPU cooler
Test Methodology
Our test system appears in the following table:
| Test Setup | |
| Processor | AMD Threadripper 1950X 16 Cores, 32 Threads, 3.4 GHz |
| Motherboards | Gigabyte X399 Designare EX |
| Cooling | Noctua NH-U14S / NH-U14S TR4-SP3 |
| Power Supply | Corsair AX1200i Platinum PSU |
| Memory | Corsair Vengeance LPX 4 × 8GB kit |
| Memory Settings | 2666 MHz |
| Video Cards | MSI GTX 770 Lightning 2GB (1150/1202 Boost) |
| Hard Drive | Crucial MX200 1TB |
| Case | Open Test Bed |
| Operating System | Windows 10 64-bit |
For both tests, we used Noctua NT-H1 thermal grease on the processor. For the thermal grease to settle in, the processor was loaded for at least an hour, left to rest for at least two hours, loaded again, then left to rest overnight. The results were recorded on the next day. After the first tests, the CPU was thoroughly cleaned and the process was repeated for the second cooler.
By default, the motherboard is trying to control the speed of the cooler’s fans depending on the processor’s temperature, creating a variable environment. As we are trying to showcase what the difference between full and partial contact for the exact same cooling arrangement, we needed a stable environment, i.e. the fans had to be running at the exact same speed. Therefore, we are powering the fans from an external power source, maintaining stable RPM throughout our testing.
Finally, we are always monitoring and recording the Tdie temperature. That is a more accurate representation of the CPU's actual thermal state, as the Threadripper (and some Ryzen) cores report their operational temperatures with a large positive offset (+27°C) for control purposes.
Results
Starting off with idle temperatures, we're already seeing a difference between the two coolers. At all fan speeds, the larger-based TR4 model cooler is around 4C cooler than its standard counterpart. Given just how little power a Threadripper processor actually uses at idle, this is an interesting prelude of things to come.
Meanwhile under load, not only there is a clear difference on the performance of the two CPU/Cooler arrangements, but that difference is much more than merely significant. The figures that we recorded correspond to a major cooling upgrade. The standard NH-U14S can barely maintain our Threadripper 1950X functional under load, with the system throttling very heavily at all times.
With its fan's speed lowered down to 600 RPM, the NH-U14S could not handle the thermal load (hence the missing data point in the graph). Meanwhile although it is essentially the same cooler, the NH-U14S TR4-SP3 manages to maintain operational temperatures throughout all our tests, with no thermal throttling even with its fan's speed lowered down to 600 RPM. If we were examining two different coolers, such an improvement would easily differentiate a basic from an advanced air cooler. In our case, the two coolers are identical, yet the difference of the arrangement’s thermal conductance is substantial, all because of the cooler’s contact plate.
The following figure displays the CPU’s temperature over time with a script loading and unloading the processor every 10 seconds. The fans are running steady at 1200 RPM. It can be seen that the NH-U14S TR4-SP3 offers both better thermal performance than the standard version with the mounting kit, but also is more resilient to varying thermal loads.
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iter - Friday, March 16, 2018 - link
Oh you are sorry for me, are you? Well that sure makes you better LOL. My life rocks because there are no spineless, fake people in it. Being a true human is a deterrent for folk like you, and that is a great thing I wouldn't change for the world, as people like you are mediocre, utterly boring and of no value whatsoever, and only fit in one place - circle jerks of similar individuals. So better save your sorry for your own sorry self. Now go find another mindless drone like you to pat eachother on the backs to create the illusion of self-worth you so desperately need. Maybe talk about gender self-identification and whatnot...Jedi2155 - Friday, March 16, 2018 - link
While you my have no fake people in your life I'm going to go out on a limb and say your circle of trusted individuals is quite small. It seems you may be limiting yourself on what you're willing to understand and respect on the basis of feeling superior to others.bobcov - Friday, April 6, 2018 - link
LostWander has a point which you have quite strongly validated through the wording of your post. His advice has merit.Arbie - Saturday, March 17, 2018 - link
Iter, did you forget your WccfTech password? That's the right place to warp general commentary into a personal attack chain.linuxgeex - Monday, March 19, 2018 - link
Agree. It's obvious to anyone that a CPU cooler only works when it's attached to the CPU. A cooler that is attached only to a portion of the CPU is intuitively only cooling the portion it is attached to.The article could have just said that. Instead they went so deep-dive on it that honestly it felt patronizing, and that's why I agree with your response. This article is completely over-written, one might even go so far as to characterize it as self-satisfied smart-ass rant... and don't get me wrong on that... some people actually enjoy participating in reading someone else's self-glorification, and have such small egos that they don't mind their time being wasted in the process, lol.
As for the "hate" LostWander is speaking of, that was in s/he/it's own mind. LostWander accuses you of hate only because they don't hear the sarcasm you are directing at the Engineers who suggested building and marketing the adapter which this article reveals to be so ineffective. Those individuals deserve your wry comments because they were fully aware of the shizzle they were encouraging consumers to purchase.
Instead, Lostwander is so defensive that s/he/it assumed that any negativity must be directed toward themself personally and so they jumped in to defend their ego by attacking you, and that is sad, especially given they believe they were delivering a message of acceptance.
eek2121 - Thursday, March 22, 2018 - link
I wouldn't say that. Prime95 small-ffts load gives me 45.5C on my Enermax TR4 AIO. That's more than 'marginal'. Furthermore, if you overclock to 4.1 GHz, it is likely you'll find the Noctua unable to keep the CPU temp below 68C. My Enermax has no problems doing so.romrunning - Wednesday, March 14, 2018 - link
"AMD’s Threadripper processors certainly do not require liquid coolers to function properly at stock"Can we add the performance of a liquid cooler to the charts to see how the air TR-4 cooler performs against it?
eek2121 - Thursday, March 22, 2018 - link
I can tell you significantly better then that noctua.mrpiggy - Wednesday, March 14, 2018 - link
'Cus it's all about that base, 'bout that base, no treble..SaolDan - Wednesday, March 14, 2018 - link
Chuckle