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Guide to P State (Variable Frequency) Overclocking on the Crosshair vi Hero

Seeing as the 1700X was going for $120 - $150 on BF / CM, I'm sure new folk are interested in OC'ing their chips. This is still one of the highest results when searching for pState OC. Here are the images for the OP that are currently broken:

https://imgur.com/a/cBgOo
https://imgur.com/a/9LLNp
https://imgur.com/a/O3GKz
https://imgur.com/a/loJoZ
https://imgur.com/a/PvXtr
https://imgur.com/a/MlMtq
https://imgur.com/a/PFpCI
https://imgur.com/a/gx6Gp
https://imgur.com/a/uOZfp

 

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  • 1 month later...

Thanks so much for this guide! My motherboard wanted to run my 1600x at 1.4v with any overclock without a load and would only drop to the actual voltage I had set when under load - IDK if this was my fault or the mobo's, but this has resolved my issue. My voltage now tops out where I want it and is lower when idle - great!

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  • 4 months later...

Amigos, em primeiro lugar peço desculpas pelo meu inglês, sou brasileiro e tenho algumas dúvidas e desejo de sua opinião sobre o meu overclock. Eu tenho um  Ryzen 7 2700 / Biostar X370GT7 / Deepcool Luciver V2 / 2x8gb HyperX Fúria 2400. Eu era capaz de fazer o overclock 4.0Ghz using os pstates, de acordo com uma tela abaixo. Quando o computador está inativo, uma voltagem de 1.309ve cheia, executando o P95 ou o Realbench, é totalmente estável. Eu só consegui a estabilidade em 1.309v. Gostaria de saber se você pode diminuir a tensão em modo inativo? Instalação da BIOS - PSTATE (também anexarei a imagem) Frequência = 4000 Tensão = 1300000 Pstate FID = A0 Pstate DID = 8 Pstate = 28 
Relaxado EDC Throttling = Desativar

Tensão inativo = 1.309v
Tensão full = 1.309v
Estável

Quando meu computador está ocioso, posso baixar mais vcore, que hoje é de 1.309v? Qual opção do Bios faz isso?
Aumento da capacidade de resolver o problema para 4,1 Ghz?
https://imgur.com/DipwoQW

 

https://imgur.com/3AZn8H5

Tem um mais de memórias @ 2933Mhz timings 14-15-13-30 - 69 ns.
Estável
https://imgur.com/7KpZmad
https://i.imgur.com/pcFRBcG.png

Realbench R20:  https://imgur.com/3DCBeht

 

 

Gostaria de saber se posso alterar alguma opção no Bios para tentar diminuir a tensão em inatividade?

Excellent topic.

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  • 2 months later...

Hello, sorry to engage an old thread, but this topic is very close to the problem I'm having.

 

for the last couple of weeks I've been struggling for the life of me to understand the default overclocking behaviour of the C6H. I've seen many reports of people facing the same issue as mine on the 2700 non-x on this board.

Basically, what happens is that changing the frequency using any method (CPU Core Multiplier, P-State P0 in Bios, ZenStates) will lock the CPU to the max voltage set.

While using Pstates from the bios, changing only the frequency of P0 and putting a plus offset in the tweaker menu (leaving vid default) locks vid to hex value F0 as I recall. I could see that every time I save changes and quit from the bios (the menu the pops up showing what changes the user made shows that vid was changed from original default value -> new value) although I hadn't touched vid.

This behaviour seems to be baked in whenever a manual CPU frequency is entered. Leaving CPU frequency on Auto allows me to offset the voltage as I like while still dropping to lower voltage states (0.8V) as I would expect.

I tried literally every Bios option combination possible and tested everything, but I can't get the voltages to drop on idle. The only thing that worked was Pstate overclocking on an old Bios version (Version 6001 I believe) but that version was too buggy for me. I was able to hit 4.1 GHz all core at 1.331V which dropped down to 0.8V at idle.

Am I doing something wrong over here? Or is this voltage behaviour known and expected? Somehow running my CPU all the time at 1.331V even at idle doesn't seem right to me frown.png

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  • 2 months later...

Hi Tom, I too created an account to thank you for your amazing post! Your info is the most helpful to me of any of the Ryzen 7 OC articles or tips I see. After running a Ryzen 7 1700 for 2 years, I snagged a 2700X from Amazon for only $193 recently. I noticed that much higher than 4 GHz on all cores requires a lot of voltage, more than I want to run for my daily driver workstation. Thanks to you, I am able to run at 4 GHz at an incredible 1.175 Volts under all core load in Cinebench R15, with a score of 1795 consistently, with temps not going higher than 65 C. In Cinebench R20, not only am I dead stable after many repeated runs, but my temps are staying under 71 C (while beating on the chip hard). R20 scores are just shy of 4000 points. I'm monitoring all temps and voltage with Core Temp.

 

When not under full load, my Ryzen runs at ~1.23 Volts under normal working conditions, while lowering further under idle. I'm using an ASUS Crosshair Hero VI first gen board with a Noctua NH-U14S air cooler - because it's incredibly quiet. Yes, my voltage dips in all core usage, which seems common on these boards, ergo the mere 1.175 Volts on all 8 cores. It amazes me that it's always stable for weeks on end with running tests, playing games, and working on it all day.

 

While I know I can clock my chip higher, running at low voltage and low temps are more important to me. There is no way I could have figured out the right offset voltage, while retaining full P States without your post. Thank you again! ?

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  • 5 months later...
On 9/14/2019 at 12:25 PM, ammyt said:

Hello, sorry to engage an old thread, but this topic is very close to the problem I'm having.

 

for the last couple of weeks I've been struggling for the life of me to understand the default overclocking behaviour of the C6H. I've seen many reports of people facing the same issue as mine on the 2700 non-x on this board.

Basically, what happens is that changing the frequency using any method (CPU Core Multiplier, P-State P0 in Bios, ZenStates) will lock the CPU to the max voltage set.

While using Pstates from the bios, changing only the frequency of P0 and putting a plus offset in the tweaker menu (leaving vid default) locks vid to hex value F0 as I recall. I could see that every time I save changes and quit from the bios (the menu the pops up showing what changes the user made shows that vid was changed from original default value -> new value) although I hadn't touched vid.

This behaviour seems to be baked in whenever a manual CPU frequency is entered. Leaving CPU frequency on Auto allows me to offset the voltage as I like while still dropping to lower voltage states (0.8V) as I would expect.

I tried literally every Bios option combination possible and tested everything, but I can't get the voltages to drop on idle. The only thing that worked was Pstate overclocking on an old Bios version (Version 6001 I believe) but that version was too buggy for me. I was able to hit 4.1 GHz all core at 1.331V which dropped down to 0.8V at idle.

Am I doing something wrong over here? Or is this voltage behaviour known and expected? Somehow running my CPU all the time at 1.331V even at idle doesn't seem right to me frown.png

not sure if too late but you dont need to worry about the high voltage at idle on ryzen. the amperage is what matters. voltage stays high but at low amperage at idle as to be able to quickly provide correct wattage when cpu ramps up to high clocks. look at your temps and compare with stock so you get a better idea of what is really going on and im sure u will notice the temps are pretty much in line with what others get online.

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