| Cores Threads | Base Freq | Turbo Freq | L3 Cache | TDP | MSRP | |
| Ryzen 9 5950X | 16c/32t | 3400 | 4900 | 64 MB | 105 W | $799 |
| Ryzen 9 5900X | 12c/24t | 3700 | 4800 | 64 MB | 105 W | $549 |
| Ryzen 7 5800X | 8c/16t | 3800 | 4700 | 32 MB | 105 W | $449 |
| Ryzen 5 5600X | 6c/12t | 3700 | 4600 | 32 MB | 65 W | $299 |
I remember someone at some point saying that PBO is so good at dynamically boosting, that for most people, you should just turn it on (rather than Auto OC or Manual) in Ryzen Master, restart, and forget about. As you can see in the post above this, that doesn't work for everyone
You sure? I remember that as PB2 (which is stock) is so good at dynamically boosting that you needn't worry about OC to begin with. Doing static OC lowers ST but allows for a higher all core clock (which PB2 can't reach due to the stock limits and PBO fails to make use of as well as a static OC). Though @DrMrLordX may want to chime in on that topic.
IIRC PBO offers modified Precision Boost 2 settings that provide additional benefit which is why that person made the recommendation, but I can't recall exactly.
Yeah, PBO is for tweaking the PB2 stock settings. Those are PPT (Package Power Tracking, essentially what most would think of when reading "TDP"), TDC (Thermal Design Current, limited by cooling solution) and EDC (Electrical Design Current, limited by VRMs).
Sweet rig!! Your B-Die sticks are better quality than mine. I can do CR1 with Cas16, or CR2 with Cas15, but no Cas14 with quad sticks
Two of the "paper launch" CPUs are in Amazon's top 10 CPU category (with another one at #18).
Yup. It's seeming that it's just demand exceeding supply -- supply is actually good if my local MicroCenter is any indication. Went in to get a 5600X 15 minutes after open, had to wait in line in the CPU section to get one. Sales rep said that they're getting shipments 3 times a week and they sell out within hours. He quoted "hundreds" of Zen 3 CPUs per week being shipped to them, mostly 5800X with some 5600X and very few 5900X or 5950X.
Welcome to my world
Welcome to my world
I'm just happy ive found my CL14 memtest 1000% stable settings with 4x8gigs @ 1900mhz IF 1:1
If some of you other guys want to start playing around with the curve optimizer, i can recommend this as a starting point if you are using a Asus motherboard:
SNIP
Welcome to my world
I'm just happy ive found my CL14 memtest 1000% stable settings with 4x8gigs @ 1900mhz IF 1:1
If some of you other guys want to start playing around with the curve optimizer, i can recommend this as a starting point if you are using a Asus motherboard:
Make sure you have Global C-state Control disabled in bios before you start.
In Extreme Tweaker:
In Digi+
- PBO: manual: 280/235/245
- Overdrive: +50 mhz
- CPU SoC voltage: Manual 1.08 -1.10v
- CPU Core Voltage: Offset 0.01 -0.06v (You want the least amount of offset as possible. Most will be @ +0.05v)
Note: You want the all core voltage to be as low as possible to get the highest all core boost that you can. My logic here is that I am using core voltage offset to maintain enough voltage for a stable single core boost, but the lowest LLC so that on all core loads the core voltage will droop and allow a higher all core boost clock.
- Max all the current limits
- Disable all the spread spectrums
- SOC LLC: Level 3
- CPU LLC: Level 1 or Level 2
In Advanced> AMD Overclocking > PBO
- Set to advanced
- Set limits to "Motherboard"
- Curve optimizer: All core, Negative, 25
If you have a 56/57/58/5900X You use the same settings but increase the overdrive setting from 50mhz to as high as your single core test will allow. Most CPU's will max out at a sustained 5050mhz and 5125mhz single core boost.
To test single core boost clock:
Once that is done, you move on to the next three of the top rated cores and make sure they are stable. Though it is likely that not all of the top four cores will boost as high at core 0.
- Open HWinfo64, make sure you have the "Effective Core clock" registers exposed.
- Make a note of the top 4 ranked cores.
- Open task manager and to to the "Details" tab.
- Open CB R20, start a single core run
- In Task manager's details, right click Cinebench.exe, click "Select Affinity", uncheck the top box to de-select all cores, put a check box next to core 0, then click ok. (You will have to re-select the affinity every run unless you have an application such as Process lasso that will automatically apply core affinity.)
- In HWinfo, Look at the clock speed for core zero. It should be at your max boost + overdrive (for a 5950X using the settings above, that would be 5050mhz max boost + 50 mhz overdrive = 5100mhz).
- In HWinfo, monitor the "Effective core speed" It should be very near reported core clock. For example, the core clock is at 5100mhz, the effective core clock should be 5085mhz or higher. Generally effective clock will be reported a bit lower than core clock because of how it is calculated. (which is why the effective core clock really needs a sustained load to be close to accurate).
- Monitor Core voltage and effective core VID. Your core voltage should be 1.5v- 1.525v, and effective VID 1.485v - 1.506v. You really don't want core voltage to exceed 1.525v for sustained period (spikes are fine and normal) This is why your core voltage offset shouldn't exceed +0.05 - 0.07v.
- You should be able to complete at least 5-6 back to back runs of CB R20 without crashing.
Once that is complete move on to all core load stress testing. If an all core workload does not pass stress testing, increase core LLC to achieve stability.
An AT guide for Ryzen APU but still good basic info:
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