5900x RM2599
x570 pro wifi RM1319 (but do is x570 pro wifi or i x570 pro wifi)
consider cheap

3733 RAM, guess that's why.

This is unexpected indeed.
IF:DRAM above 1800Mhz (3600Mhz DDR4) results in additional 10 watts.


Anyway, for the AGESA 1201 that supposedly fix the L3 cache performance.


https://www.reddit.com/r/Amd/comments/lrf0c...he_performance/




Now that explain why I feel 3950x is faster than 5950x during encoding.
Reason :

3950X


5950X


My 5950x has the L3 bug.....ouch.......

whats the L3 bug cache? the recent 1.21 patch for mobo? affected by mobo or its CPU pasal?

Sometime the L3 cache speed stuck at low speed when booting up from cold.

AMD Robert said 1201 is just a "comestic" change for aida64:

But 3950X seems to finish x264 encoding faster than 5950x (when the L3 bug crap happened)

Coolermaster Hyper 212 Turbo (twin fans)

Aiyooo...uncleeeee!!!!!

Anyway tried checking stock in 2 shops at Ipoh Parade.
No Ryzen stocks.

Can, if I follow stock settings for both 3950x and 5950x, the temperature never breach 82'C.

If I turn on PBO, confirm breach 90'C and thermal throttling starts.

What's the clockspeeds and power consumption when PBO is off/on?

JohnLai I'm interested in your observations on the idle SOC Power usage.

When you tested IF 1800mhz vs higher that consumed more than 10w difference, did you keep the VSOC constant?

My observation that while keeping VSOC at 1.0v, 1800mhz IF vs 1833Mhz only used 1 more watt, but that VSOC is remotely stable, lots of WHEAs lol)

I saved two profiles for myself:
1. mem 3733, IF 1866, vsoc 1.1, idles around 13w
2. mem 3600, IF 1800, vsoc 1.0, idles around 8w

With the first profile, my 5600x allcore boosts less in CB20 than second profile since the 5w of the powerbudget is used by the soc (I keep PBO limits AMD stock values)

Agesa punya pasal. AMD makes good chip, but the agesa is crap.

Around 30-40watts extra when PBO is on.
Of course the average clock speed for both CPU are higher when PBO is turned on. Throttling back and forth at 90'C.


The SOC voltage for 3733 (1866) and 3600 (1800) are kept constant at 1.1v (Hwinfo reports it as 1.081v) for 5950x (x570). Gigabyte default auto to 1.2V, I reduced it to 1.1V.
Strange, right?

I think your observation is correct (the bolded part) too, cause 5950x has 2 CCDs while 5600x only has 1 CCD (unless if you got 5600x with 2 CCDs)
5W extra on 3733 (1866) on one CCD. 2 CCDs X 5W = 10Watt.

10W + 8W [the base power consumption at 3600 (1800)] = 18w. More or less same with idle SOC power consumption of 19w.


edit:
Conclusion, even though ZEN 2 and ZEN 3 are using same IO die, for some unknown reason, AMD decided to pump more power (amperage) into the SOC for ZEN 3 series beyond 3600 (1800IF)

edit2: 3950x = I OC to 3733 (1866 IF) and it doesn't exhibit the higher SOC power consumption at idle.

This post has been edited by JohnLai: Feb 27 2021, 07:31 PM

Ah yes i forgot u're using 5800x. In the end our findings converge

IMHO idle should be idle i.e. IF should downclock at idle, like how Intel's uncore freq downclocks at idle

AMD really have quite a way to go on fixing these things which might not be apparent to the end user, unless the end user looks for it

Indeed.....though I still wonder what is AMD rational on pumping more power into ZEN 3 SOC.
I mean the official DDR4 supported speed for ZEN 3 is still same 3200Mhz as ZEN 2 after all.

When I look at ZEN 2 3950x 3733 (1866) SOC power usage (6-8W) at idle, I kinda

Power consumption of additional 10w idle on 24/7 ;
(10w/1000) x 24 hours x 365 days = 87.6 kwh. Around RM20 per year.

This post has been edited by JohnLai: Feb 27 2021, 08:24 PM

the rational is probably to keep the cpu running stable. As you look back at the first few agesa versions where some of the zen3 getting alot of WHEA or couldnt even boot with 1600 IF.

Still talking about stability after 2 weeks nv enter here. Lol

Well... intel is using a very mature architecture afterall, so I am really curious to see how the rocketlake will fare when it launch. This is also why I got a 10th gen first so it can be a spare when I have issues with 11th gen. Learnt my lesson with Ryzen lol.

Hi all,

Sorry for asking a noob question. I realise my AMD5950x is always running at 4.5ghz. Is it good that it is always running so high clock as i see it not running at base clock. As my temp is 68 degree and kinda worry about it.


How do i make it slower for daily usage and to boost clock when I use extensive task. As worry CPU gg.

But nontherless. AMD is damn good. I run it at 100% performance for 72 hours straight and zero issue with it during my simulation task.

Wow, what monitoring software is that? Looks pretty slick!

this is msi dragon center software include along with the motherboard.

I enjoyed reading these post pushing their system to the edge, otherwise it'll be quite boring. So keep them coming in please.

There's nothing much to talk about on a stable system, just use it for work and play that's it. A 3600 + B450 + 3200 CL16 will be very stable but it's so boring haha.