Is the Scythe Mugen 5 Rev.B good enough to cool the Ryzen 5800x?

Shaolin Chicken · 2 Feb 2021 at 12:36

Hi guys,

Looking for your help, does anyone know if the Scythe Mugen 5 Rev.B good enough to cool the Ryzen 5800x?
I have read the reports about the bases of the mugen 5 not being flat and can confirm that mine is not completely flat.
But has anyone tested the combo?
Is it good enough to allow max boost and PBO?

Thank you for any responses.

Minstadave · 2 Feb 2021 at 13:28

Yup no problem. Had one on a 3900X and it was fine.

Shaolin Chicken · 2 Feb 2021 at 14:26

Thanks @Minstadave, good to hear.

Anyone else?

Joxeon · 2 Feb 2021 at 15:09

I max out at around 80c with the wraith prism so I'm sure the mugen would do better than that while also being much quieter.

Shaolin Chicken · 2 Feb 2021 at 15:14

Thanks Joxeon, isn't the base on the wraith prism perfectly flat so makes a better contact?
Whereas the mugen isn't perfectly flat

Joxeon · 2 Feb 2021 at 15:17

It is flat although there are small groves between the heatpipes which I filled in with thermal paste in addition to the thin spread I used on the CPU.

The mugen 5 was one of the coolers I was looking at as I wasn't expecting the prism to be enough since AMD dropped it for high TDP zen 3 chips but since it seems to be doing ok so I'm holding off for the time being while I dicide which to go with.

Shaolin Chicken · 2 Feb 2021 at 15:27

Thanks again, sounds like it's at least worth trying.

EsaT · 2 Feb 2021 at 20:54

Shaolin Chicken said:
Thanks again, sounds like it's at least worth trying.

Anyway grinding/lapping heatsink's base flat is rather simple.
At minimum you only need some really flat surface (like plate of glass) and handfull of different grade sandpapers.

If your case can fit its height, Alpenfohn Brocken 3 would be eanrly as beefy as Mugen 5 and guarateed to have flat base.
https://www.overclockers.co.uk/alpenfohn-brocken-3-cpu-cooler-140mm-hs-05a-al.html

Shaolin Chicken · 2 Feb 2021 at 21:41

Thanks EsaT, I did lap a heatsink base one time before, not sure I'll do it again though.

I'll consider the Brocken 3 or possibly just try the Mugen as I already have it.

Richdog · 8 Feb 2021 at 07:12

Hey Shao I just ordered a Noctua NF-F12 to replace my Standard Scythe Mugen 5 Rev B fan as I find it a bit whiny at higher rpm and the Noctuas are known for being really good and quiet performers.

You can do a Google and Youtube to see Scythe Mugen 5 Rev B reviews and they will show that it performs very close to the top Noctua and Be Quiet coolers (at half the price), So, I don't think you need to worry to much about how it cools a 5800+.

Shaolin Chicken · 8 Feb 2021 at 11:58

Thanks Richdog, let me know your results, if you could use the stock fan first that would be great, if not, no worries.

I thought the mugen 5 got good reviews for noise levels with the Kaze flex fan, that's one of the reasons why I bought it.

Richdog · 8 Feb 2021 at 12:21

Shaolin Chicken said:
Thanks Richdog, let me know your results, if you could use the stock fan first that would be great, if not, no worries.

Sorry mate but I now operate a "zero faff" policy with my PC (especially give my other thread with the CPU socket) and don't do any swapping or testing once it is running. I will build it with the parts I want in it and then not touch it again.

Shaolin Chicken said:
I thought the mugen 5 got good reviews for noise levels with the Kaze flex fan, that's one of the reasons why I bought it.

I guess it's subjective. I found it annoying and the 5800+ is hot so I bought the Noctua as its such a known performer.

Shaolin Chicken · 8 Feb 2021 at 12:56

Not to worry Richdog, if you could let me know the temps with the new setup, it will give me some idea.

Shaolin Chicken · 6 Mar 2021 at 16:17

Thought I would give an update on this, finally installed the 5800x and mugen 5 and got the computer running.
At all system defaults the temperatures peaked at just over 65 degrees on the cpu z benchmark, with scores of over 670 for single core and over 6800 on the multicore.
Most of the cores boosted to over 4.85 GHz except three cores which boosted to over 4.7 GHz.

Then I stressed the cpu with the cpu z program and the temperatures reached a peak of just over 72 degrees after around 5 mintues or so.
This was with the just the mugen 5 cooler and a rear exhaust fan, I have two 140mm fans to install into the front of the system, so may see a difference. We shall see.

So all in all, I don't think these are too bad, just have to learn how to tweak the system for maximum performance.

If I'm ever not happy with the temperatures, I've got a 240mm all in one to use.

Richdog · 6 Mar 2021 at 19:12

Nice to hear you got it up and running! It may be better if you run Cinebench R23 benchmark to test full load temps, I am not sure how demanding the CPU-Z test really is on a CPU. https://www.maxon.net/en/cinebench

I have my NH-D15 installed and wow is it a monster and it really is an improvement over my ugen 5 in terms of noise and cooling.

Results here ***The Official 5600X \5800X owners thread***

Shaolin Chicken · 6 Mar 2021 at 19:20

Thanks for the link to cinebench Richdog, will try it over the next few days.

Shaolin Chicken · 7 Mar 2021 at 16:04

So I ran Cinebench r23 and scored just over 15800 on the multi score ran, the temperatures maxed out at 82.8 degrees on the cpu tdie.
So not too bad, will have to have a play with PBO and curve optimiser once I understand how to.

I also have to set my memory XMP.
Will eventually swap out the cooler for the 240mm AIO to see if improves temperatures further, as I don't think my chip is too bad.

Richdog · 7 Mar 2021 at 20:51

Shaolin Chicken said:
So I ran Cinebench r23 and scored just over 15800 on the multi score ran, the temperatures maxed out at 82.8 degrees on the cpu tdie.
So not too bad, will have to have a play with PBO and curve optimiser once I understand how to.

I also have to set my memory XMP.
Will eventually swap out the cooler for the 240mm AIO to see if improves temperatures further, as I don't think my chip is too bad.

Nice, that's a good load temp. Maybe you could try this? https://www.overclockers.co.uk/foru...olden-sample-post-your-results-here.18920881/

Shaolin Chicken · 7 Mar 2021 at 21:50

Richdog said:
Nice, that's a good load temp. Maybe you could try this? https://www.overclockers.co.uk/foru...olden-sample-post-your-results-here.18920881/

Thanks Richdog, will have a look.

Shaolin Chicken · 9 Mar 2021 at 16:21

Something odd was happening today, after installing two font fans into my system, the cpu temperatures increased to 84.5 while running cinebench R23.
It could be because of the 1 degree higher ambient today, but I expected to see a drop in temperatures and hopefully a higher boost clocks, but this was not the case.

One question, how do I find which are the best two cores using hwinfo 64?