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Old 27-08-18, 04:12 PM
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mihapiha mihapiha is offline
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Overclocking AMD Threadripper 24/7

Hi guys.

After a long long time I'm really excited to finally have moved back to an AMD system.

I used to have an Intel i7-4930k @ 4.4 GHz for 5 years. Since The first Core2Duos hit the market I've not used an AMD system as my daily system, so I'm super excited and really happy about finally having (as an enthusiast) the proper performance reasons to switch.

The Asus Zenith Extreme was my MB of choice, and due to my good water cooling (2x 120.4 (or 480) 80mm thick radiators) I had little worries about cooling the VRMs and CPU.

Because I use the system for work and gaming, I wanted originally to upgrade to an 8-core CPU (actually considered the i7-7820k) but the Zenith was just so sweet with all the PCIe lanes that I really got excited about going to TR4. I've used SLI/Crossfire now for years and especially the PCIe lane limitation turned me off Intel.

I put an EK Monoblock on that motherboard. I also worried about the 2000 series not being supported by the motherboard if I got one from the retailer with an older bios.

Due to the 2000 series CPUs hitting the market the prices of the "older" 1920X dropped so much in price, that I couldn't resist getting the 1920x instead although I waited for a long time for the 2000 series.

I'm super thrilled with the results of my new CPU, however I'm very much confused by the temperature limitations and CPU voltages on the new system.

I googled and read various information on how hot a TR4 can get, but I must admit that I cannot fully understand what they mean....

Right now I found a 100% stable (clock 140% current) with a 1.375V setting in the bios and 1.417V displayed in CPUz. Even with super heavy load like Prime95 28.7 I get to a CPU temperature of 76°C (CPU Packages 76°C) about 30 min running small FFT. The VRMs are nice and cool even under this super heavy load at 49°C because of the EK waterblock...

The CPU is running with a 40.25 multiplier and 100.2 Bus Speed at about 4030 MHz. These temperatures are pretty much a worst case szenario.

I want to know whether I can push that CPU further. It will run 4.1 GHz but I need 1.425V bios / 1.47V CPUz...

AMD says the CPU is supposed to stay under 68°C... Which I think I'm at right now, because hardly anything other than Prime95 can push that CPU close to 70°C

Also I'm also worried about the seemingly high VCore. 1.417V doesn't worry me, but getting close to 1.5V seem way too much for 24/7 usage...

Have I found the maximum or can I OC further?


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Old 28-08-18, 05:53 PM
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I keep googling and cannot seem to find anything proper. However I do see some results with people having 90°C or more for some benchmarks. This seems just way too hot for a CPU especially 24/7.

However I have had little success finding any information on the voltages, whether or not 1.5V 24/7 is too much.
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Old 28-08-18, 07:25 PM
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I wouldn't want to run 1.5V 24/7, I'd have my doubts about the longevity on it. IMO, occasional peaks to 1.5V wouldn't be a problem.

My 1920x quite happily runs at 3.975GHz with 1.325V which it runs at 24/7. Temps don't get above 70. I can push it to 4.1GHz with around 1.425V but temps under heavy load get a bit excessive. (75+ with prime small FFT) This is watercooled using the older not so good EK waterblock, so performance is somewhat middle of the road. Either way, the VRM's on my gigabyte board get pretty toasty when the cpu is pegged for prolonged periods.
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Old 29-08-18, 07:37 AM
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Thanks for the information. Usually the custom water cooling allows 0.05 - 0.1V more than a traditional decent air cooler or IMO.

If you're running at 1.325V (BIOS or CPUz by the way?) then my 1.417V is about right where it ought to be. The 1920X is now rock stable. It even does Prime95 for 30 min.

It is weird that there are no Core temperatures and that there are sort of two max temps I keep finding. One's 68°C (Tj) and the other is 95°C (Tctl).

I am however not sure which one is being displayed. I don't know what Tjmax is. That would be nice to know, because I tended to be about set my CPU up about 20-25°C under Tjmax with Intel...
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Old 29-08-18, 09:50 AM
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There is a temp offset on the CPU's so one is with and one is without.

You need the lower number.

Have you tweeked your load line calibration?
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Old 29-08-18, 10:18 AM
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No, not yet.

The Zenith has like 8 setting for that and I haven't had the time to play around which one I ought to use - or if any...
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Old 29-08-18, 10:36 AM
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Quote:
Originally Posted by mihapiha View Post
No, not yet.

The Zenith has like 8 setting for that and I haven't had the time to play around which one I ought to use - or if any...

LLC is the difference between the bios volts and the CPUZ reported volts....
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Old 29-08-18, 12:38 PM
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mihapiha mihapiha is offline
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Quote:
Originally Posted by tinytomlogan View Post
LLC is the difference between the bios volts and the CPUZ reported volts....
Thanks TTL But like I said, I've not had the time to test which one of the 8 settings or so Asus offers actually works best.
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Old 30-08-18, 07:55 AM
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I got through the LLC;

Very odd and surprising. The settings can be put in from -2 to +8 Which are the differences from the set in voltage. So if you set -2 the CPU displayed voltage will be 1.375V and at +8 the board will push to 1.46V. Leaving the setting on Auto will basically leave it at 1 with a modest increase to the 1.417 from a set 1.375V in the bios.

Basically between settings -2 and -1 there are no longer voltage jumps from the set bios to CPUz...

The big difference with -2 is that the idle Voltage is 1.44 and then drops in load to 1.417V; basically the setting set in the bios.

I don't know whether that's any better
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Old 30-08-18, 05:11 PM
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I don't think I can push any further:



Thanks for advice on the voltages and temps. I think this is pretty ideal. Prime got the system to 71°C which I don't think is too hot considering it's still quite warm outside.
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