20 Replies Latest reply on Feb 27, 2018 10:53 AM by martin.malice

    Ryzen Threadripper 1950x dropping clock speed

    martin.malice

      Hi guys, recently I discovered a problem with my build. I'm using it mainly for rendering and when I put something to render, clock speed is slowly dropping and through some time it drops significantly, sometimes below 3.0GHz. I just don't understand why this is happening. Load temperature is stable 68 degrees Celsius. Any help or hint would be highly appreciated because I'm starting to go mad here. Thanks.

       

      AMD Threadripper 1950x @3.4Ghz

      Gigabyte x399 Aorus Gaming 7

      Enermax LIQTECH TR4 360 (water cooled)

      Corsair Vengeance CMK16GX4M1B3000C15, 2x16GB @3000MHz (XMP turned ON)

      Gigabyte Aorus GeForce GTX 1080 Ti

      Samsung 960 PRO M2

      PSU: Corsair HX1000i (1000W)

      Windows 10 Pro

        • Re: Ryzen Threadripper 1950x dropping clock speed
          randa71

          68° for threadripper it's a high temp: according to AMD it's max temp recommended.

          Ryzen™ Threadripper™ 1950X Processor | AMD

          i'm using a Noctua UH14S and temp rarely reach 60°, except when i launch stress test...

          some questions: which software are you using to read CPU temp? which software are you using to render?

          It seems that CPU is throttling...that's why clocks drops significantly..

          Is the cpu cooler installed correctly? what are your idle temps?

            • Re: Ryzen Threadripper 1950x dropping clock speed
              martin.malice

              Hi, I've read something about the temperatures and there are quite a few different explanations, some say that's normal others don't think so.

               

              I'm using both HW Monitor Pro and AMD Ryzen Master. They both show the same temperature on load - 68°C. Idle temp is between 45-50°C.

               

              I'm using 3Ds Max and Corona for rendering. I would say that the cooler is installed correctly but you never know, something might have gone wrong during installation.

               

              I have Corsair 570x Crystal series mid-tower case and the fans from Enermax are positioned on the front panel and the other stock fans are positioned in the rest available space inside the case.

               

              Any ideas? Should I take off the cooling and re-apply the thermal paste?

               

                • Re: Ryzen Threadripper 1950x dropping clock speed
                  randa71

                  Another question: Windows power setting is on High Performance? Or Ryzen balanced?

                  regarding temperature, i have the same CPU (1950X) but my idle temps are really slower: 25-30°..... for example, i have downloaded Hwmonitor and now  my cpu is idling at 27°. very strange that you are idling at 45 - 50°...Celsius right?

                  i suggest you to verify your cooler installation...

                  Your motherboard temps are high too? i ask you to be sure that it's not a problem related to the case...if hot air remains in the case everything it's hotter, motherboard too..

                    • Re: Ryzen Threadripper 1950x dropping clock speed
                      martin.malice

                      Thank you for your answer

                      Windows power plan is set to Balanced. I'm posting a screenshot of HW monitor to see for yourself as I'm not sure which temperature should I look at.

                      Also, processor idle temp is now around 41°C but I'm running only Google Chrome, HW monitor, and Ryzen Master...

                       

                      HW1.jpg

                        • Re: Ryzen Threadripper 1950x dropping clock speed
                          randa71

                          set power plan to high performance....

                          download hwmonitor non pro, so you don't have trial values..

                          this is what i have.....as you see i'm idling at  25/27°

                            • Re: Ryzen Threadripper 1950x dropping clock speed
                              martin.malice

                              Will do tomorrow since I'm at home already. One more question, could it be the case that the stock fans are turned the wrong way? I mean, I have 3 fans, two on the top blowing the air inwards and one on the back blowing the air outwards? As I already mentioned the Enermax radiator with 3 fans are situated on the front...

                                • Re: Ryzen Threadripper 1950x dropping clock speed
                                  randa71

                                  perhaps it's better that the two fans on top should blow air outwards, not inwards. hot air goes up...

                                  the 3 fans of the enermax blow air inside to cool the radiator/water?

                                  check if the enermax water pump is working correctly.....

                                  and re-check that the cooler is properly installed....t.i.m. should cover all the IHS.

                                  1 of 1 people found this helpful
                                    • Re: Ryzen Threadripper 1950x dropping clock speed
                                      martin.malice

                                      I flipped the two fans this morning and the results are better, but still not as good as yours :-/ perhaps the room temperature in my office is a bit high, I don't have a thermometer but I would say between 25-27°C.

                                       

                                      Anyway, the temperature on load is around 62°C which is good considering the conditions and the great thing about that is I'm no longer experiencing clock speed drops. Temp in idle is around 39°C. I maybe still need to check the paste and the cooler seating.

                                       

                                      Also, I've noticed that your "watts" are way lower than mine, I don't know if that has to do with the temperature? I'd say yes since it's directly connected with power consumption thus increasing workload and affecting temperature, am I wrong?

                                       

                                      HW2.jpg

                                        • Re: Ryzen Threadripper 1950x dropping clock speed
                                          randa71

                                          you are right: more watts means more power consumption that means more workload with finally temp higher...you are absolutely right.

                                          Regarding differences between me and you about watts or power consumption it's because i don't have anything in background....it's possible that you have some processes running, process or processes that raise up CPU utilization than power consumption. You should look at the Windows task manager...

                                          Regarding AIO cooler i'm not a fan of this type of cooler for these reasons:

                                          1) if pump fails CPU temp raise up till thermal shutdown....very risky, according to me; on youtube there are a lot of videos showing this problem. With a CPU that costs 1000€ i don't want to run these risks.

                                          2) If temp water raise because of CPU heat, cooler will not be able to remove the same amount of heat...i think that is what arnesaknussemm was spoking about.

                                          for this reason i prefer 100% and i use with optimal results air cooler.....and for threadripper there are some very good choices

                                          • Re: Ryzen Threadripper 1950x dropping clock speed
                                            randa71

                                            I want to ask you a thing: i've read that you have ddr4 XMP enabled at 3.0ghz right? Could you tell me the vsoc voltage value applied automatically by the mainboard? or did you set it manually? Looking at your print screen it seems VIN5. Is this?

                                            I want to use XMP me too and i wanted to know which voltages are automatically supplied by the mainboard to the SOC

                                              • Re: Ryzen Threadripper 1950x dropping clock speed
                                                martin.malice

                                                So you're suggesting that I should switch to air cooling instead of water cooling? I already said I'm not much of a tech guy but that's what my friends that are quite into PC hardware told me I should buy.

                                                 

                                                Regarding processes, I will look a bit more into to see if something is consuming more power because it's strange.

                                                 

                                                Regarding XMP, I really don't know, I haven't touched anything, I just turned on "Profile 1" in BIOS. I can post you a screenshot of the settings if you'd like?

                                                  • Re: Ryzen Threadripper 1950x dropping clock speed
                                                    randa71

                                                    Regarding XMP you've just answered me... no need to post more screenshot. Thank you. I suppose that vsoc is VIN5.

                                                    Regarding CPU cooling i've just only told you my personal opinion. I know that there are a lot of people that prefer AIO cooler rather than air cooler. I'm not one of them My 1950X (no overclock)  is cooled by an optimal air cooler...and with a full CPU load i have max temp of 55 - 60° and for me it's a very good and satisfying result. And fans are very silent...for me silence is a plus. i don't like having an elicopter in my case .

                                                    If you are using an enermax AIO no need to switch to an air cooler. But next time you will build a PC consider an air cooler  .  

                                                      • Re: Ryzen Threadripper 1950x dropping clock speed
                                                        martin.malice

                                                        Ok
                                                        I still need to figure out why is the temperature still fairly high comparing to others and try and fix that.

                                                         

                                                        I'm really glad you helped me out, so thank you! Flipping the fans did the trick for now and finally, I can use full Threadripper's power for rendering

                                                          • Re: Ryzen Threadripper 1950x dropping clock speed
                                                            randa71

                                                            just verify only a thing: in my previous experience with an asus p9x79pro and i7 3930k when i was enabling XMP in bios, my board AUTOMATICALLY was doing a sort of cpu overclock: stock settings for i7 3930k was: 3.5ghz full load and 3.8ghz full load on a single core. With XMP enabled clock was automatically raised up to 3.8GHZ for ALL the six cores...this means more power consumption and obviously more heat.

                                                            After i discovered that, i decided to set manually ram timings and ram clock without using XMP..  so no overclock was done , but my ram was at full speed.

                                                            I don''t know if your board do the same...really i don't know. But if you are not afraid entering and modyfing bios, you could load default settings and see if something changes about temperature...and if you use threadripper use 4 ram not only 2...if you use only two sticks of ram you are missing quad channel.

                                                            (Corsair Vengeance CMK16GX4M1B3000C15, 2x16GB @3000MHz (XMP turned ON).
                                                              • Re: Ryzen Threadripper 1950x dropping clock speed
                                                                martin.malice

                                                                I looked into BIOS and everything is on default settings regarding the processor clock speed.

                                                                 

                                                                Also, I "killed" every unnecessary process in Task Manager but the consumption only dropped to about 43W so I'm not sure what is causing that kind of power consumption since nothing relevant was running in the background.

                                                                 

                                                                I'm aware of Quad Channel but since I ran out of money when I bought the computer I decided to buy two more sticks of RAM later. Also, I think I made a mistake in choosing the RAM since I later found out that particular model number wasn't on Gigabyte's QVL nor Corsair's web page of supported RAM for Threadripper. Odd, but It's working...

                                      • Re: Ryzen Threadripper 1950x dropping clock speed
                                        fuziongxp

                                        Can you look in CPU-Z if the Bus Speed is dropping?

                                        I am actually having the problem that the Bus Speed on my 1600x drops which results the clock speed to drop as well.