2700x Performance in PBO (Precision Boost Overdrive) only - Page 2 - Overclock.net - An Overclocking Community

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2700x Performance in PBO (Precision Boost Overdrive) only

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post #11 of 77 (permalink) Old 01-05-2019, 01:03 PM - Thread Starter
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Quote: Originally Posted by rdr09 View Post
I can't imagine if say the 3700X with all its cores boosting to 4.5GHz. Wow.
I think that next gen Ryzen will have 4.7GHz and 5GHz in reach.
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post #12 of 77 (permalink) Old 01-05-2019, 05:10 PM
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Quote: Originally Posted by constructorx View Post
I think that next gen Ryzen will have 4.7GHz and 5GHz in reach.
We shall see... I doubt it though... because of the new node, boosting might behave very differently than Ryzen 1 and 2.

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post #13 of 77 (permalink) Old 01-06-2019, 04:52 AM
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I guess BCLK 103 and a fine chip will have to explain it. Can't alter BCLK on my MB.
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post #14 of 77 (permalink) Old 01-08-2019, 03:51 AM
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Quote: Originally Posted by constructorx View Post
I think that next gen Ryzen will have 4.7GHz and 5GHz in reach.

How's the 2700X handling the GTX 2070?


Wait, your ram is only at 3200. At 3466 Cl14 should add 30 more points in Cine. Spills over to games as well.
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post #15 of 77 (permalink) Old 01-08-2019, 04:13 AM - Thread Starter
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Quote: Originally Posted by rdr09 View Post
How's the 2700X handling the GTX 2070?

Wait, your ram is only at 3200. At 3466 Cl14 should add 30 more points in Cine. Spills over to games as well.
It handles it very easily. I have my GPU on default settings. I got about 15% extra out of it when I did an OC, but to be honest, I did not notice the difference. Although I game, I use my machine for dev work also.

My memory is a dual rank 2x16GB kit. It will not OC as easily as 2x8GB single rank kits. It has been optimised with 'fast' timings using Ryzen Memory Calculator.

This is my fastest memory run: https://www.userbenchmark.com/UserRun/13468774 (126%, the current top score is 122%, only first run is listed with userbenchmark.)

I will try 3466 and post back results.

Last edited by constructorx; 01-08-2019 at 04:20 AM.
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post #16 of 77 (permalink) Old 01-08-2019, 06:24 AM
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Yeah, for the past week or so having Ryzen, I've been too focused on core clock instead of getting my RAM past 3200 CL14. The tl;dr with PBO overclocking is to keep it cool and reduce the voltage. Going from a -.1 to a -.11 voltage offset nets me a small gain in performance since it keeps the heat lower. Any LLC even adds a little heat that harms performance. PBO is too aggressive with boost voltages. I want to pull it down more, but the idle voltage drops too much; so in an odd twist, getting stability at idle is harder than under load... Although I could just run a constant voltage 24/7.

Maybe using Ryzen Master to configure PBO is better than using the "on/off" settings in the newest AGESA BIOS options???

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post #17 of 77 (permalink) Old 01-08-2019, 06:43 AM
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Quote: Originally Posted by constructorx View Post
It handles it very easily. I have my GPU on default settings. I got about 15% extra out of it when I did an OC, but to be honest, I did not notice the difference. Although I game, I use my machine for dev work also.

My memory is a dual rank 2x16GB kit. It will not OC as easily as 2x8GB single rank kits. It has been optimised with 'fast' timings using Ryzen Memory Calculator.

This is my fastest memory run: https://www.userbenchmark.com/UserRun/13468774 (126%, the current top score is 122%, only first run is listed with userbenchmark.)

I will try 3466 and post back results.

Don't sweat it. 3200 is fine so long as your cpu clocks well and it does.

Quote: Originally Posted by umeng2002 View Post
Yeah, for the past week or so having Ryzen, I've been too focused on core clock instead of getting my RAM past 3200 CL14. The tl;dr with PBO overclocking is to keep it cool and reduce the voltage. Going from a -.1 to a -.11 voltage offset nets me a small gain in performance since it keeps the heat lower. Any LLC even adds a little heat that harms performance. PBO is too aggressive with boost voltages. I want to pull it down more, but the idle voltage drops too much; so in an odd twist, getting stability at idle is harder than under load... Although I could just run a constant voltage 24/7.

Maybe using Ryzen Master to configure PBO is better than using the "on/off" settings in the newest AGESA BIOS options???
I think cpu oc is still king even with Ryzen. That PBO really works. Instead of just boosting to 4.1 - 4.2, that 4.3 makes a hell of a lot difference.
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post #18 of 77 (permalink) Old 01-08-2019, 07:31 AM - Thread Starter
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Quote: Originally Posted by rdr09 View Post
Don't sweat it. 3200 is fine so long as your cpu clocks well and it does.
I got to 3400 'safe' settings and it worked fine. 3466 'fast' does not work.

I have now settled to these settings (screenshot just taken a moment ago): https://i.imgur.com/oeXR74s.jpg

Vcore 1.296V boosting to 1.328V and 4.35GHz all core PBO (set in bios as CPU Core Voltage: 1.2875V)

Cinebench 1977.
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post #19 of 77 (permalink) Old 01-08-2019, 07:59 AM
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Quote: Originally Posted by constructorx View Post
I got to 3400 'safe' settings and it worked fine. 3466 'fast' does not work.

I have now settled to these settings (screenshot just taken a moment ago): https://i.imgur.com/oeXR74s.jpg

Vcore 1.296V boosting to 1.328V and 4.35GHz all core PBO (set in bios as CPU Core Voltage: 1.2875V)

Cinebench 1977.

Fantastic!
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post #20 of 77 (permalink) Old 01-08-2019, 07:38 PM
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Quote: Originally Posted by constructorx View Post
I got to 3400 'safe' settings and it worked fine. 3466 'fast' does not work.

I have now settled to these settings (screenshot just taken a moment ago): https://i.imgur.com/oeXR74s.jpg

Vcore 1.296V boosting to 1.328V and 4.35GHz all core PBO (set in bios as CPU Core Voltage: 1.2875V)

Cinebench 1977.
What cooing do you have? What's your CL rate at 3400?

Just did a run myself: https://www.userbenchmark.com/UserRun/13656462

CPU
AMD Ryzen 2700X
Motherboard
Asus Prime X470-Pro
GPU
EVGA GeForce RTX 2070 XC Ultra
RAM
TeamGroup T-Force 16 GB (2x8) Pro Dark (B-die TDPGD416G3200HC14ADC01)
Hard Drive
Samsung 840 EVO 250 GB
Power Supply
Seasonic Focus Plus Platinum SSR-750PX
Cooling
Corsair H80i (not V2 or GT)
Monitor
LG 34UC80-B
Keyboard
Logitech G413
Mouse
Logitech G503 RGB
Audio
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Last edited by umeng2002; 01-08-2019 at 07:48 PM.
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