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Ryzen 5 1500X + AB350M Pro4

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PetrolHead View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PetrolHead Quote  Post ReplyReply Direct Link To This Post Posted: 18 Apr 2018 at 5:48am
I decided to upgrade my CPU cooler, and after some thought I decided to go with an AIO liquid cooler, namely Fractacl Design Celcius S24. Installation was relatively easy, but would have been even easier if the manual hadn't instructed to twist the Intel mount in the wrong direction to get it off. The end result is good regardless. There was no increase in noise levels*, yet max temps** in P95 blend test (after roughly 20 minutes) fell from 74.3 C to 61.8 C, and max temps in AIDA64 stress test (after the temperature plateaued) fell from 70.9 C to 59 C. Socket max temps fell from 54.5 C to 46.0 C and from 52.5 C to 44 C, respectively. There were some temperature spikes - up to 66.8C - during AIDA64 after the installation, but I'm not sure if these are just sensor glitches or if it's something related to running in the cooler. I saw no such spikes during Prime95 and the cooler seems quick to react to increases in load.

Overall, the drop in max temperature is maybe not the biggest, considering I was using the stock Wraith Spire cooler. On the other hand, the Wraith Spire is very capable for a stock cooler. Running the CPU fan at higher RPM could have resulted in even lower temperatures, but it would have also increased the noise. Another nice feature of the liquid cooler is that now hot air is blown directly out of the case (from the top). The airflow over the VRMs' heatsinks may not be as good as before, but what air flows through them should now be cooler.

All that's left to do now is to see if I can run higher clocks and voltages without the system becoming unstable.

*The cooler has two settings: "Auto" and "PWD". Since reviews saw no significant difference between the two, I'm running the cooler on "Auto".

**Temperatures from HWiNFO64.
Ryzen 5 1500X, ASRock AB350M Pro4, 2x8 GB G.Skill Trident Z 3466CL16, EVGA GTX 1060 SC 6GB GDDR5, Corsair RM550x, Samsung 960 EVO SSD (NVMe) 250GB, Samsung 850 EVO SSD 500 GB, Windows 10 64-bit
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PetrolHead Quote  Post ReplyReply Direct Link To This Post Posted: 18 Apr 2018 at 6:23am
Hmm. In January I posted that 3.8 GHz @ 1.3125 V was only stable for a few minutes in Prime95. No temperatures were written down for that combination. On the other hand 3.7 GHz was stable at that voltage and temperatures had maxed out at 84 C (CPU) and 61 C (socket) after two hours. Well, now I've been running the 3.8 GHz @ 1.3125 V settings for half an hour and temperatures have maxed out at 66.9 C (CPU) and 48 C (socket). Looks like higher clocks may be achievable after all with reasonable voltages.

Ryzen 5 1500X, ASRock AB350M Pro4, 2x8 GB G.Skill Trident Z 3466CL16, EVGA GTX 1060 SC 6GB GDDR5, Corsair RM550x, Samsung 960 EVO SSD (NVMe) 250GB, Samsung 850 EVO SSD 500 GB, Windows 10 64-bit
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PetrolHead Quote  Post ReplyReply Direct Link To This Post Posted: 21 Apr 2018 at 12:13am
Testing is still ongoing, but looks like 3.9 GHz requires more voltage than I'd like to use. However, 3.8 GHz was stable in Prime95 blend test for 8 hours @ 1.325 V - and with RAM speed increased to 3333 MHz! It seems that the lower temperatures and/or higher Vcore also help the IMC handle higher clockspeeds. I haven't touched the timings yet, but I might give that another try as well.

The maximum temperatures during the 8 hour Prime95 stress test were 68.5 C for the CPU and 49.5 C for the socket. Vcore (SVI2 TFN) sat mostly at 1.337 V under load, so a bit more than what was set in BIOS and still under the "safe" value.


Edited by PetrolHead - 21 Apr 2018 at 12:14am
Ryzen 5 1500X, ASRock AB350M Pro4, 2x8 GB G.Skill Trident Z 3466CL16, EVGA GTX 1060 SC 6GB GDDR5, Corsair RM550x, Samsung 960 EVO SSD (NVMe) 250GB, Samsung 850 EVO SSD 500 GB, Windows 10 64-bit
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