3900x paired with b450 MOBO

[Chris Ando]

Done a bit of research of the compatibility with the 3900x and the b540 motherboard. some people have said you wont get the most performance out of the 3900x in a b450, some others say it will work fine with the bios update and as long as you dont overclock it too much. 
If you can pair the 3900x with the b450, whats the max you could overclock it to?
 

[narrdarr]

2 minutes ago, Chris Ando said:

Done a bit of research of the compatibility with the 3900x and the b540 motherboard. some people have said you wont get the most performance out of the 3900x in a b450, some others say it will work fine with the bios update and as long as you dont overclock it too much. 
If you can pair the 3900x with the b450, whats the max you could overclock it to?
 

Depends on which board. But ryzen doesn't oc much anyways sooo...

[Chris Ando]

6 minutes ago, narrdarr said:

Depends on which board. But ryzen doesn't oc much anyways sooo...

atm im running an MSI B450 PRO-VDH. overclocking has a bit of significance for me because i use after effects, that program relies on a good cpu clockspeed

[ckinfos]

...so you need to decide...you want a ferrari engine in a fiat....or in a ferrari! and what i mean by that. You buy a good cpu ...want to oc...in a mobo chipset of the previous generation. I would say go for b550 that has better thermals on vrms. the difference is 20 bucks that seems to not matter that much to you if you go for a 3900x.

OR else stay in b450 without oc.

[boggy77]

do you have the b450 already? if yes? which model? if not, get a b550.

[Chris Ando]

1 minute ago, boggy77 said:

do you have the b450 already? if yes? which model? if not, get a b550.

i got a MSI B450 PRO-VDH

[boggy77]

1 minute ago, Chris Ando said:

atm im running an MSI B450 PRO-VDH. overclocking has a bit of significance for me because i use after effects, that program relies on a good cpu clockspeed

you won't be able to overclock a 3900x on that board, it will even struggle (overheat) at stock speeds.

[narrdarr]

2 minutes ago, boggy77 said:

you won't be able to overclock a 3900x on that board, it will even struggle (overheat) at stock speeds.

I don't know about overheating but the MSI B450 PRO-VDH will struggle 

[boggy77]

6 minutes ago, narrdarr said:

I don't know about overheating but the MSI B450 PRO-VDH will struggle 

yeah that's what I meant. the motherboard will struggle because it will overheat

[Mateyyy]

1 hour ago, narrdarr said:

I don't know about overheating but the MSI B450 PRO-VDH will struggle 

1 hour ago, boggy77 said:

yeah that's what I meant. the motherboard will struggle because it will overheat

Assuming OP's got some airflow inside their case, their board should run a 3900X fine - even more so if it's a VDH Max.

Edited October 19, 2020 by Mateyyy

[MurderM]

25 minutes ago, ckinfos said:

...so you need to decide...you want a ferrari engine in a fiat....or in a ferrari! and what i mean by that. You buy a good cpu ...want to oc...in a mobo chipset of the previous generation. I would say go for b550 that has better thermals on vrms. the difference is 20 bucks that seems to not matter that much to you if you go for a 3900x.

OR else stay in b450 without oc.

Bad comparison. It's not "Ferrari Vs Fiat" between B450 and B550 motherboards. There is hardly any difference at all. Both VRMs on most boards are still 8+2 phase VRMs that have been unchanged.

[SavageNeo]

17 minutes ago, MurderM said:

between B450 and B550 motherboards.

well msi b550 tomahawk has better VRMs than most x570 and b450 boards. 

 

but to the op. if it is the VDHG max and you have some ariflow it should be fine. if it is not the VDH max you are in trouble. 

[WereCat]

26 minutes ago, Mateyyy said:

Assuming OP's got some airflow inside their case, a 3900X should run fine in that board - even more so if it's the VDH Max.

The VRM on the board will run hot, not the CPU. 

OP can still activate the 65W TDP profile and it will be fine but at reduced performance. 

[Mateyyy]

2 minutes ago, WereCat said:

The VRM on the board will run hot, not the CPU. 

OP can still activate the 65W TDP profile and it will be fine but at reduced performance. 

I wasn't talking about CPU temps.

[Vishera]

As an overclocker i will say this:

As long as you have plenty of airflow,it will work and should expect no difference in performance in comparison to newer chipsets.

A case with front mesh is recommended,and have fans on the top of the case to blow on the board.

I have done that as part of my experiments with a board that has similar capabilities when it comes to VRMs.

[alyen]

If you are on a tight budget and want a better performance the 3900x will be an improvement. You may not be able to get very high boost and not sustain boost for long periods. If you do find it too stressful for your VRM and CPU just do what Werecat said.

3 hours ago, WereCat said:

The VRM on the board will run hot, not the CPU. 

OP can still activate the 65W TDP profile and it will be fine but at reduced performance. 

I've been using the 3900x on a Asrock B450 for almost a year now. I have mine overclocked by adjusting the PPT, TDC and EDC in bios. It was significant performance increase over a 2700x.

[Chris Ando]

3 hours ago, alyen said:

If you are on a tight budget and want a better performance the 3900x will be an improvement. You may not be able to get very high boost and not sustain boost for long periods. If you do find it too stressful for your VRM and CPU just do what Werecat said.

I've been using the 3900x on a Asrock B450 for almost a year now. I have mine overclocked by adjusting the PPT, TDC and EDC in bios. It was significant performance increase over a 2700x.

what did you overclock your 3900x to?

[alyen]

I have my 3900x overclocked to 4.2-4.3GHz  on all cores when I'm gaming on my MMO from changing the PPT, TDC and EDC. My components may not be good for a static overclocks or maybe it just is that CPU. I'm satisfied with the performance since upgrading to it. It only seems to boost to 4.2Ghz minimum on Cinebench R20 scoring 7390.

[Zberg]

Good and bad news here.

 

Bad news is that no matter the board, it wont overclock great, and isnt really worth the time to do so.

 

Good news is that it runs fantastic at stock or with DOCP on B450 boards, and you gain minimal performance by OCing beyond that.  It really isnt worth the time.  Mine is regularly boosting to 4.1-4.2 at bone stock, and most of the OC stuff I have seen people have issues getting above 4.3.  It really just isnt worth the time or effort to OC ryzen, which is kind of awesome in a way (it comes well optimized)

[Chris Ando]

5 hours ago, Zberg said:

Good and bad news here.

 

Bad news is that no matter the board, it wont overclock great, and isnt really worth the time to do so.

 

Good news is that it runs fantastic at stock or with DOCP on B450 boards, and you gain minimal performance by OCing beyond that.  It really isnt worth the time.  Mine is regularly boosting to 4.1-4.2 at bone stock, and most of the OC stuff I have seen people have issues getting above 4.3.  It really just isnt worth the time or effort to OC ryzen, which is kind of awesome in a way (it comes well optimized)

ah ok. the only reason i want to overclock is for good performance in after effects, max i would overclock it to is 4.2 Ghz