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Statik

Finding Max Safe Voltage for 3800x?

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Posted · Original PosterOP

Hey guys, so I'm looking into getting my max OC, then a stable everyday OC on my 3800x. And I have a few questions.

 

1. I know to find my safe "max voltage" I go run Prime95 in Small-FFTs, and look at my max SVI2 TFN. My question is how long shouldd it take to reach this? I started P95, reset HWiNFO64 and I appear to be sitting at a stable 83C with SVI2 TFN @ 1.262V. But P95 has only been running for a few minutes. How long should I let this run? Because 1.262 seems low to me? And to confirm, once I reach this number, I shouldn't go over that voltage when making an OC?

 

2. Once I find this number, is it good to reach a stable OC with Ryzen Master, then input it into the Bios? Because I like the simplicity of using Ryzen Master.

 

3. Is there anything else I should be looking at in the bios asides from voltage, multiplier, etc?

 

 

Thanks for any help, I appreciate it. As well I'd love to see any of your Ryzen 3000 OC's.

 

Also a side note, I'm curious if I have a bad mount, my chip is on a ML240R, and I had some issues getting it on originally, and my idle seems a little high, but under load on P95 I seemed to be sitting stable at 83C?


Gaming Build:

CPU: Ryzen 7 3800x (4.35GHz)  |  GPU: Asus ROG STRIX 2080 SUPER Advanced  |  Motherboard: Asus X570 TUF GAMING-PLUS  |  RAM: G.Skill Ripjaws DDR4 3600MHz 16GB  |  PSU: Corsair RM850x  |  Storage: 1TB ADATA XPG SX8200 Pro, 250GB Samsung 840 Evo, 500GB Samsung 840 Evo  |  Cooler: CM ML240R  |  Case: Lian Li PC-O11

 

Peripherals:

Monitor: LG 34GK950F  |  Sound: Sennheiser HD 598  |  Mic: Blue Yeti  |  Keyboard: Corsair K95 RGB Platinum  |  Mouse: Logitech G502

 

 

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1.3V should still be ok for all core workloads with Zen 2, if you can get its temperature lower than it is now. I should also stress that you should tune your memory first if you plan on doing so before touching the core as better memory performance can lead to the CPU getting stressed harder and need better conditions to run stable.

 

It's still better to use the BIOS because not all numbers work the same way in two places. For example the same voltage number Ryzen Master could be unstable in the BIOS.

 

voltage tuning done with offsets and overclock with PBO?

6 minutes ago, Statik said:

and I had some issues getting it on originally, and my idle seems a little high, but under load on P95 I seemed to be sitting stable at 83C?

That's still really high if the pump and fans are at full speed, heck even 80% speed.

 


CPU: i7-2600K 4751MHz 1.44V (software) --> 1.47V at the back of the socket Motherboard: Asrock Z77 Extreme4 (BCLK: 103.3MHz) CPU Cooler: Noctua NH-D15 RAM: Adata XPG 2x8GB DDR3 (XMP: 2133MHz 10-11-11-30 CR2, custom: 2203MHz 10-11-10-26 CR1 tRFC:230 tREFI:14000) GPU: Asus GTX 1070 Dual (Super Jetstream vbios, +70(2025-2088MHz)/+400(8.8Gbps)) SSD: Samsung 840 Pro 256GB (main boot drive), Transcend SSD370 128GB PSU: Seasonic X-660 80+ Gold Case: Antec P110 Silent, 5 intakes 1 exhaust Monitor: AOC G2460PF 1080p 144Hz (150Hz max w/ DP, 121Hz max w/ HDMI) TN panel Keyboard: Logitech G610 Orion (Cherry MX Blue) with SteelSeries Apex M260 keycaps Mouse: BenQ Zowie FK1

 

Model: HP Omen 17 17-an110ca CPU: i7-8750H (0.125V core & cache, 50mV SA undervolt) GPU: GTX 1060 6GB Mobile (+80/+450, 1650MHz~1750MHz 0.78V~0.85V) RAM: 8+8GB DDR4-2400 18-17-17-39 2T Storage: 1TB HP EX920 PCIe x4 M.2 SSD + 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172), 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally Monitor: 1080p 126Hz IPS G-sync

 

Desktop benching:

Cinebench R15 Single thread:168 Multi-thread: 833 

SuperPi (v1.5 from Techpowerup, PI value output) 16K: 0.100s 1M: 8.255s 32M: 7m 45.93s

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Re-mount that cooler.  


AMD Ryzen 2700X  |  Fractal Design S36 360 AIO w/6 Corsair SP120L fans  |  Asus Crosshair VII WiFi X470  | G.SKILL TridentZ 3636MHz 14-15-14-28 2x8GB  | EVGA 1070 Ti SC GAMING ACX 3.0 Black  |  Samsung 970 EVO M.2 NVMe 500GB - Boot Drive  |  Samsung 850 EVO SSD 1TB - Game Drive  |  Seagate 1TB HDD - Media Drive  |  EVGA 650 G3  | Thermaltake Core P3 Case 

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Posted · Original PosterOP
18 minutes ago, Jurrunio said:

1.3V should still be ok for all core workloads with Zen 2, if you can get its temperature lower than it is now. I should also stress that you should tune your memory first if you plan on doing so before touching the core as better memory performance can lead to the CPU getting stressed harder and need better conditions to run stable.

 

It's still better to use the BIOS because not all numbers work the same way in two places. For example the same voltage number Ryzen Master could be unstable in the BIOS.

 

voltage tuning done with offsets and overclock with PBO?

That's still really high if the pump and fans are at full speed, heck even 80% speed.

 

Thanks! What do you mean exactly by tune my memory? 
 

as well with the temps I might look into it, I just ran P95 for like 15 minutes and it spiked to that, which is frankly the highest temp I’ve seen on that chip. A while back I had 4.35 GHz on 1.2875V and only hit 68C in Cinebech R20, where as stock I was getting 73? I’ll try it tomorrow and if everything is still high, I’ll reseat the cooler and try again.

20 minutes ago, nick name said:

Re-mount that cooler.  

 


Gaming Build:

CPU: Ryzen 7 3800x (4.35GHz)  |  GPU: Asus ROG STRIX 2080 SUPER Advanced  |  Motherboard: Asus X570 TUF GAMING-PLUS  |  RAM: G.Skill Ripjaws DDR4 3600MHz 16GB  |  PSU: Corsair RM850x  |  Storage: 1TB ADATA XPG SX8200 Pro, 250GB Samsung 840 Evo, 500GB Samsung 840 Evo  |  Cooler: CM ML240R  |  Case: Lian Li PC-O11

 

Peripherals:

Monitor: LG 34GK950F  |  Sound: Sennheiser HD 598  |  Mic: Blue Yeti  |  Keyboard: Corsair K95 RGB Platinum  |  Mouse: Logitech G502

 

 

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23 minutes ago, Statik said:

What do you mean exactly by tune my memory? 

Memory frequency, voltage and timings. Zen 2 overclocking is 80% about memory tuning, 5% for core frequency tuning, 15% for hoping the softwares work well with each other,


CPU: i7-2600K 4751MHz 1.44V (software) --> 1.47V at the back of the socket Motherboard: Asrock Z77 Extreme4 (BCLK: 103.3MHz) CPU Cooler: Noctua NH-D15 RAM: Adata XPG 2x8GB DDR3 (XMP: 2133MHz 10-11-11-30 CR2, custom: 2203MHz 10-11-10-26 CR1 tRFC:230 tREFI:14000) GPU: Asus GTX 1070 Dual (Super Jetstream vbios, +70(2025-2088MHz)/+400(8.8Gbps)) SSD: Samsung 840 Pro 256GB (main boot drive), Transcend SSD370 128GB PSU: Seasonic X-660 80+ Gold Case: Antec P110 Silent, 5 intakes 1 exhaust Monitor: AOC G2460PF 1080p 144Hz (150Hz max w/ DP, 121Hz max w/ HDMI) TN panel Keyboard: Logitech G610 Orion (Cherry MX Blue) with SteelSeries Apex M260 keycaps Mouse: BenQ Zowie FK1

 

Model: HP Omen 17 17-an110ca CPU: i7-8750H (0.125V core & cache, 50mV SA undervolt) GPU: GTX 1060 6GB Mobile (+80/+450, 1650MHz~1750MHz 0.78V~0.85V) RAM: 8+8GB DDR4-2400 18-17-17-39 2T Storage: 1TB HP EX920 PCIe x4 M.2 SSD + 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172), 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally Monitor: 1080p 126Hz IPS G-sync

 

Desktop benching:

Cinebench R15 Single thread:168 Multi-thread: 833 

SuperPi (v1.5 from Techpowerup, PI value output) 16K: 0.100s 1M: 8.255s 32M: 7m 45.93s

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100% Correct^^^^^^^^^^^^^^^^^

 

Tune your memory you get MASSIVE improvements Steve from gamersnexus even claimed it can be as big as getting a new GPU upgrade. 

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Did you raise your board limits to max before you got that voltage?  Still 1.262v is pretty low but it might be because your cpu was running so hot, therefore probably better to not go over that for a manual OC unless you got better cooling.

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Posted · Original PosterOP
4 hours ago, Vejnemojnen said:

 

some does not seem to recommend all-core OC. Just enable PBO, fine-tune memory. 

Im starting to consider that. It’s a shame that you can’t manually OC well with these chips. 
 

 

2 hours ago, BruceWayneofLosSanto said:

Did you raise your board limits to max before you got that voltage?  Still 1.262v is pretty low but it might be because your cpu was running so hot, therefore probably better to not go over that for a manual OC unless you got better cooling.

yeah that’s possible, and what do you mean by raise my boards limits to max?


Gaming Build:

CPU: Ryzen 7 3800x (4.35GHz)  |  GPU: Asus ROG STRIX 2080 SUPER Advanced  |  Motherboard: Asus X570 TUF GAMING-PLUS  |  RAM: G.Skill Ripjaws DDR4 3600MHz 16GB  |  PSU: Corsair RM850x  |  Storage: 1TB ADATA XPG SX8200 Pro, 250GB Samsung 840 Evo, 500GB Samsung 840 Evo  |  Cooler: CM ML240R  |  Case: Lian Li PC-O11

 

Peripherals:

Monitor: LG 34GK950F  |  Sound: Sennheiser HD 598  |  Mic: Blue Yeti  |  Keyboard: Corsair K95 RGB Platinum  |  Mouse: Logitech G502

 

 

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5 minutes ago, Statik said:

Im starting to consider that. It’s a shame that you can’t manually OC well with these chips. 

Depends on the individual. Some prefer this fool-proof method of enabling PBO and calling it a day. Not everyone is keen on overclocking. For those, simply the fact, that the CPU performs great without touching anything is an advantage.


Please, whenever I make a grammatic mistake, correct it. I have been told, that my grammar is borderline abysmal. I would like to improve it. Your feedback is invaluable!

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I don't know if it will work with your motherboard, but there is a utility that allows you to set multipliers for each core.  I think it was first seen on a Der8auer video.  


AMD Ryzen 2700X  |  Fractal Design S36 360 AIO w/6 Corsair SP120L fans  |  Asus Crosshair VII WiFi X470  | G.SKILL TridentZ 3636MHz 14-15-14-28 2x8GB  | EVGA 1070 Ti SC GAMING ACX 3.0 Black  |  Samsung 970 EVO M.2 NVMe 500GB - Boot Drive  |  Samsung 850 EVO SSD 1TB - Game Drive  |  Seagate 1TB HDD - Media Drive  |  EVGA 650 G3  | Thermaltake Core P3 Case 

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9 hours ago, Vejnemojnen said:
some does not seem to recommend all-core OC. Just enable PBO, fine-tune memory. 

I did a lot of research and honestly, I don't see any reason what so ever to do an all core OC on my 3800X.  I mean I can easily get a 4.5 Ghz all core on mine but aside from workloads which utilize all the cores, I actually lose performance since 3 of my cores will autoboost to 4.543 Ghz and none boost less than 4.441 Ghz.  Basically for gaming, I end up getting a couple more fps just leaving everything at stock settings. Further, I don't have to worry about the voltages because it only boosts the voltage when needed allowing the chip to run at very low voltages the vast majority of the time.

 

As others have mentioned, you end up getting much more out of fine running the RAM, in fact if you want the best performance boost, start off by getting the best RAM you can afford, focusing on high speed, low latency and tight timings. Also make sure your optimizing your Infinity Fabric settings as well.

 

To be honest though, Ryzen doesn't have much OC'ing headroom anywhere.  The best you can do is achieve incremental enhancements of 1-2% here and there which might give you a cumulative enhancement of maybe 5-10% if all the stars align.  If you can get a fantastic cooling solution that keeps the system running under 60 C, Ryzen CPUs boost a few hundred mhz better and you get a 1-2% here. If you have the best RAM configured with the best speed, timings and latency, you get 1-3% there.  If you optimize the Infinity Fabric to work with your RAM OC, you get another 1-2% there, so on and so forth.  It really almost isn't worth it to try to OC Ryzen anymore because out of the box, the hardware (CPUs, MB, RAM, etc) is pretty much pushing the limits.

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