First time OC - Ryzen 9 3900X

[Spike Wolfen]

Hey All!

 

As Title says, this will be my first time overclocking my system since purchase (Before Covid) and reason being is because.... i want to learn.  I want to see and experience the benefits of OC CPU and GPU and etc.  SO, if anyone has any tips, articles, anything to help, id appreciate!

 

Specs:

Ryzen 9 3900X

ROG CrossHair VII MoBo

Gigabyte GTX 1660

16GB Trident z Royal 3200MHz RAM

Liquid AIO

1000W RM PSU

M.2 only storage

 

Thanks Guys! (Let me know if you need any more info)

[Moonzy]

you can use ryzen master and cinebench R20 to do some overclock

 

here's a table showing what to expect

 

you can start from 4.05ghz all core and 1.212v, slowly bump up freq until unstable, then bump up voltage

 

do so until your temps becomes higher than you'd like, or if voltage is higher than 1.3v

wouldnt recommend higher than 1.3v for daily use

 

you can do per CCX overclocking too, as some CCX cant clock as high, though it takes more time to validate

 

i use cinebench to find unstable clock for each CCX, step down 2 steps from unstable clock for each CCX and run intelburntest for 8 hours to validate the OC

if i BSOD/crash in daily use, reduce all CCX by 1 step again

 

you can go up to 1.35v for fun OC if you'd like, but do take note that temps may be so high that it makes the chip unstable

ie you might be able to do 4.3ghz on 1.3v but fail on 1.35v due to temps making it unstable

 

my personal OC is

1.3v

CCD0 both CCX at 4.3

CCD1 CCX0 4.2, CCX1 4.3

cinebench R20 score 7500-ish

 

daily use

1.1v

CCD0 both CCX at 4.0

CCD1 CCX0 3.8, CCX1 3.9

cinebench R20 score 7500-ish

[jtmoseley]

7 hours ago, Moonzy said:

you can use ryzen master and cinebench R20 to do some overclock

 

here's a table showing what to expect

 

you can start from 4.05ghz all core and 1.212v, slowly bump up freq until unstable, then bump up voltage

 

do so until your temps becomes higher than you'd like, or if voltage is higher than 1.3v

wouldnt recommend higher than 1.3v for daily use

 

you can do per CCX overclocking too, as some CCX cant clock as high, though it takes more time to validate

 

i use cinebench to find unstable clock for each CCX, step down 2 steps from unstable clock for each CCX and run intelburntest for 8 hours to validate the OC

if i BSOD/crash in daily use, reduce all CCX by 1 step again

 

you can go up to 1.35v for fun OC if you'd like, but do take note that temps may be so high that it makes the chip unstable

ie you might be able to do 4.3ghz on 1.3v but fail on 1.35v due to temps making it unstable

 

my personal OC is

1.3v

CCD0 both CCX at 4.3

CCD1 CCX0 4.2, CCX1 4.3

cinebench R20 score 7500-ish

Not OP but is it possible to optimize this for single core speed?

[Moonzy]

1 hour ago, jtmoseley said:

Not OP but is it possible to optimize this for single core speed?

Not recommended to do single core OC on Zen 2 because the other cores on the ccx will drop in speed significantly

 

ie

Set core 0 at 4.5ghz, core 1,2 at 4.0

It'll run core 0 at 4.5 but other two cores run around 2.5 GHz or something along those lines

[jtmoseley]

4 minutes ago, Moonzy said:

Not recommended to do single core OC on Zen 2 because the other cores on the ccx will drop in speed significantly

 

ie

Set core 0 at 4.5ghz, core 1,2 at 4.0

It'll run core 0 at 4.5 but other two cores run around 2.5 GHz or something along those lines

Okay but if I'm running a single core game that wouldn't matter, right

[Moonzy]

Just now, jtmoseley said:

Okay but if I'm running a single core game that wouldn't matter, right

I would run at stock speed if it's single core game, at least the other cores wouldn't get gimped to hell