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  Topic Review (Newest First)
02-22-2020 11:57 AM
roco_smith
roco_smith

Quote: Originally Posted by T[]RK View Post
Hi.

If i use Ryzen 9 3900X with Crosshair VI (not Hero, but Extreme) and RAM from Team Group (Dark Pro 3600MHz CL16) will it work at it's frequency?

I just saw good price for this board, but not sure it will work with ram as i need it.

Another thing is cold boot issue. It's on both Crosshair VI boards (Hero and Extreme)? Is it also exist on Crosshair VII Hero?
I have the same motherboard and same cpu , and not problem what so ever. Running with 4 modules of DDR4 3200MHZ Samsumg BDIE OC to 3800 MHZ
02-22-2020 06:48 AM
pschorr1123
Quote: Originally Posted by elguero View Post
Is it normal that the cpu core voltage goes to 1.482volts? at idle and at stock?

It seams a little to high for me? on my old 1700x I got an all core overclock of 3.9ghz at 1.39275 volts, and I never went over 1.4 volts.
Ryzen 3000 has a very aggressive boost algorithm and will go up to 1.5 volts during light single threaded loads. As soon as your workload increases watts the voltage drops fast. (ie CB 20 Multi vcore will drop under 1.35)

Also keep in mind Ryzen 3000 changes its frequency up to 1000 times per second. This behavior is drastically different from any previous CPU (Intel or AMD) most monitoring software only polls a few times per second or even slower.

Downside is that unlike your 2700x or 1800X the max single core frequency will be held very briefly while the older ones hit its max speed all day long.

You can compare your CB15 or CB20 single core vs others to see if your CPU is performing as expected regardless of what frequency it may report hitting. With my 3700x I only see the max frequency under the Max column inHWiNFO64 but the 203 CB15 score lines up with others

More info by AMD Robert Hallock here:https://www.reddit.com/r/Amd/comment...3rd_gen_ryzen/

EDIT: Forgot to mention these chips are very sensitive to heat so the better your cooling solution the better your performance.
02-22-2020 06:46 AM
T[]RK
Quote: Originally Posted by bloot View Post
Cold boot is not an issue anymore on latests bios.
This is nice!
02-22-2020 05:00 AM
bloot
Quote: Originally Posted by T[]RK View Post
Hi.

If i use Ryzen 9 3900X with Crosshair VI (not Hero, but Extreme) and RAM from Team Group (Dark Pro 3600MHz CL16) will it work at it's frequency?

I just saw good price for this board, but not sure it will work with ram as i need it.

Another thing is cold boot issue. It's on both Crosshair VI boards (Hero and Extreme)? Is it also exist on Crosshair VII Hero?
Yes it will almost for sure work just fine. Cold boot is not an issue anymore on latests bios.
02-22-2020 04:59 AM
kyo2020 This is my config



[video=youtube;NGSO-F4xgTg]https://www.youtube.com/watch?v=NGSO-F4xgTg&t=10s[/video]



02-22-2020 03:06 AM
T[]RK Hi.

If i use Ryzen 9 3900X with Crosshair VI (not Hero, but Extreme) and RAM from Team Group (Dark Pro 3600MHz CL16) will it work at it's frequency?

I just saw good price for this board, but not sure it will work with ram as i need it.

Another thing is cold boot issue. It's on both Crosshair VI boards (Hero and Extreme)? Is it also exist on Crosshair VII Hero?
02-21-2020 08:57 PM
MosterMenu
Quote: Originally Posted by elguero View Post
Is it normal that the cpu core voltage goes to 1.482volts? at idle and at stock?

It seams a little to high for me? on my old 1700x I got an all core overclock of 3.9ghz at 1.39275 volts, and I never went over 1.4 volts.
Don't you think you're leaving out a fair bit of information in this question?

Oh i see, you just got the 3950.
thats the core voltage, put a negative offset on it, try not to get too low though
02-21-2020 08:45 PM
elguero Is it normal that the cpu core voltage goes to 1.482volts? at idle and at stock?

It seams a little to high for me? on my old 1700x I got an all core overclock of 3.9ghz at 1.39275 volts, and I never went over 1.4 volts.
02-21-2020 06:05 PM
elguero Wow what an stressful afternoon, I just installed the 3950x, and nothing happened, just the error code 02, or as the manual says "AP initialization before microcode loading", what is that? who knows.

Anyway long story short, I took out one stick of memory and voila it worked.

Now I have the both sticks, memory on ocdp, everything else on auto, and my systems feels like upgrading to a Ferrari from a Toyota Camry.

About PBO, do I just set it to auto?
02-21-2020 03:21 PM
herericc
Quote: Originally Posted by elguero View Post
I just got a 3950x, jumping on from a 1700x, and I need a little help, I tried searching for this info but got lost, and I would appreciate any help on what´s the latest bios, what are the safe voltages to overclock a on ryzen 3000? where is PBO on the bios?
This might be counter intuitive but the 3950 has the best default boost settings of all the 3000 series. Except in all-core workloads you're likely to barely see a difference in actual performance after overclocking.

I would focus on getting your RAM overclocked so you can benefit from the faster infinity fabric speeds.

PBO is under the main overclocking page - and also under AMD OVERCLOCKING on the 2nd (third???) page
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