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Macbang
Adept I

5800X3d never reach boost of 4.5ghz, it just locks at 4.449Ghz

Why is CPU locked at 4.449ghz in games and C20 or C23 runs??

 

första 5800x3d.PNG

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1 Solution

it seems to have helped, but i also put performance enhancer mode from AUTO to level 3 OC in bios, of my Asus X570 E gaming motherboard

Screen Shot 11-03-22 at 03.38 AM.PNGScreen Shot 11-03-22 at 03.26 AM.PNG

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5 Replies
DimkaTsv
Miniboss

Ah, that is simple. Because Bus speed can hover around 99.98-100.03 mHz, depending on mobo and settings and actual CPU speed is determined from this by multiplier. So it can be 99.98*45=4499.1 mHz. And different tools reports stuff more or less precise. 
For HWINFO 99.98 = 100.00 basically, because normal step for BCLK is 0.1 mHz even for top tier motherboards iirc. 

DimkaTsv_0-1667342741644.png

 

Another possibility as there is some another factor that limits max boost clock for this specific core. Like for my cores it can be voltage requested (they likely get to border of their V/F curve even despite offset). But it shouldn't be an issue for 4500 mHz, though. More than that, it only affects effective clock, not nominal clock. 

Matt_AMD
Community Manager

Disabling spread spectrum in the bios might help you hit the round number of 4.55Ghz on 1-2 CPU cores.

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it seems to have helped, but i also put performance enhancer mode from AUTO to level 3 OC in bios, of my Asus X570 E gaming motherboard

Screen Shot 11-03-22 at 03.38 AM.PNGScreen Shot 11-03-22 at 03.26 AM.PNG

 

Improvements are real

 

Screen Shot 11-05-22 at 12.08 AM.PNG

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Tatilica
Journeyman III

https://drive.google.com/file/d/15MZe1sfk0vQZKtrIdkxyurU1WpCJNiDo/view?usp=drivesdk

Hi guys, as you can see, then YES 5800X3D can do 4.55ghz all cores in games only BCLK 102.25 C-states & CCPC Preffered Enables in BIOS CO-22

https://drive.google.com/file/d/15NH1HjftQvjEHynFKWWz_K219Lbdx8aK/view?usp=drivesdk

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