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Ryzen 3900X thread

ntemples1 said:
Ok I tried it and it set the voltage at 1.35 but very unstable and crashed the bios (screen froze) I have an identical new memory kit and tried that same thing so I’ve ordered Corsair vengeance pro and will try it on that, otherwise I’ll have to rma the board.
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Yes, sounds like something is wrong with the board but it's a good idea to try another memory kit anyway. Have you tried clearing the CMOS using the button on the I/O shield (it will reset all your BIOS settings so make sure you save them beforehand)? Make sure the computer is off when you do this. This can sometimes resolve issues with the BIOS that might be due to corruption, I recommend trying this before RMAing as it could just work.
 
PANTH3R said:
Just got the chip, some cores hit 4.65GHz, but when leaving the chip on auto, the all core clock won't go passed 4.05Ghz which is odd as I can run a stable 4.4/4.2GHz (CCD0/CCD1) with the chip running at 1.250V.

Edit: Running ABBA btw on a X570 Taichi.
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You are doing better than me on my MSI X570 ACE, I am very lucky if one core hits 4.6x GHz, this happens once in a blue moon. It will always hit that speed if I run the Aida64 memory latency test although this is the only way to make it do so.
 
ltron said:
Yes, sounds like something is wrong with the board but it's a good idea to try another memory kit anyway. Have you tried clearing the CMOS using the button on the I/O shield (it will reset all your BIOS settings so make sure you save them beforehand)? Make sure the computer is off when you do this. This can sometimes resolve issues with the BIOS that might be due to corruption, I recommend trying this before RMAing as it could just work.
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Thanks for that advice yes I’ll give that a go tonight, I’m on the latest beta bios as of last night. It might be an incompatibility with that type of ram fingers crossed will let you know!
 
Is the 3900x worth overclocking? I have heard mixed things, some people claim you should and others say the PBO negates the need for OC'ing
 
Praz94 said:
Do you know how much of a difference it makes in benchmarks for OC vs no OC?
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RAM or all core OC on CPU? RAM can make quite a bit of difference. HArdware unboxed has a RAM OC'ing video somewhere. Left at stock I think the 3900X does 4.2Ghz all core but folk are OC'ing to 4.4 All core. How much difference it makes I don't know as I'm only a gamer and not intelligent enough to use a PC for content creation etc. As the CPU's work on AMD's algorithms within the AGESA then AMD have done al the OC'ing for you as it OC's itself depending on board, temps voltages etc. But the canny folk are squeezing out a bit extra, how much extra only those that require all core workloads can answer. Sure someone'll chime in who knows.
 
Woodsta888 said:
RAM or all core OC on CPU? RAM can make quite a bit of difference. HArdware unboxed has a RAM OC'ing video somewhere. Left at stock I think the 3900X does 4.2Ghz all core but folk are OC'ing to 4.4 All core. How much difference it makes I don't know as I'm only a gamer and not intelligent enough to use a PC for content creation etc. As the CPU's work on AMD's algorithms within the AGESA then AMD have done al the OC'ing for you as it OC's itself depending on board, temps voltages etc. But the canny folk are squeezing out a bit extra, how much extra only those that require all core workloads can answer. Sure someone'll chime in who knows.
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The CPU itself. RAM OC does have a great benefit to AMD in particular though
 
Woodsta888 said:
RAM or all core OC on CPU? RAM can make quite a bit of difference. HArdware unboxed has a RAM OC'ing video somewhere. Left at stock I think the 3900X does 4.2Ghz all core but folk are OC'ing to 4.4 All core. How much difference it makes I don't know as I'm only a gamer and not intelligent enough to use a PC for content creation etc. As the CPU's work on AMD's algorithms within the AGESA then AMD have done al the OC'ing for you as it OC's itself depending on board, temps voltages etc. But the canny folk are squeezing out a bit extra, how much extra only those that require all core workloads can answer. Sure someone'll chime in who knows.
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RAM overclock only and just leave the CPU on stock settings. Let the internal boost engine to do it's thing.
Ofc you can OC the CPU but ONLY if you use Ryzen Master and per core overclock. DO NOT do BIOS overclock as it will lock CCD0 to the slowest CCD1 CPU (4300-4350). CCD0 can do 4600-4625 in 3 cores, and 4550+ to the other 3.
And FYI why AGESA 1003 ABBA bios is important.

 
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ntemples1 said:
It still won’t let me run a the Corsair at anything above 2133!!! No matter what!! Also the computer is slow to post, I’m gonna rma it what a pain!!!!
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I have to RMA mine too due to not being able to change RAM voltage from 1.2V. It's a pain because other than that it seems to work perfectly (other than struggling a bit to hit maximum boost clock speed even with the latest AGESA) and if I hadn't bought a reasonably fast RAM kit I'd be none the wiser.

I hope your replacement works well and they sort it out for you as these are not cheap boards.
 
ltron said:
I have to RMA mine too due to not being able to change RAM voltage from 1.2V. It's a pain because other than that it seems to work perfectly (other than struggling a bit to hit maximum boost clock speed even with the latest AGESA) and if I hadn't bought a reasonably fast RAM kit I'd be none the wiser.

I hope your replacement works well and they sort it out for you as these are not cheap boards.
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Thanks i've got another board coming tomorrow a Gigabyte Aorus Pro, so am going to try with that one, hopefully it works!!
 
ltron said:
Let me know whether it does as I am half tempted to switch to Gigabyte too, but it will be expensive.
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Will do, I’m hoping this ram clocking thing is not a common thing on x570 boards. The ram I tried (patriot and Corsair vengeance pro) are not listed in the QVL for my board, also their. It listed for the gigabyte either so I’m hoping it works anyway!
 
I see earlier in the thread the system was working fine with RAM at 3600Mhz the went bad.

Is the system stable with the RAM at 2333 or whatever default it runs at or does it crash no matter what now?

Plus are either of those kits Ryzen optimised? I know they don't have to be but just out of interest.

Feel for ya ;)
 
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