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***The Official 5900X \5950X owners thread***

Upgraded from 3900X today.
Got my 5900X running at 4.9 on 6 cores at the moment.
Other 6 cores at 4.7
All core OC
curve optimizer negative -10
max boost 150
scaler Auto

maximum Voltage showing on HWinfo 1.488v
Dumb OC, no time spent on it yet.

(360 Corsair AIO)
 
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I've finished having an initial play with this chip. I've used curve optimizer and used -12 on all cores and +200 on the boost. On a heavy all core workload like Cinebench it drops to 4.25GHz which seems a little low but boosts nicely when gaming.

G2TzS5U.png
 
Very chuffed with my 5900X so far. Pulling together benchmarks to do a full write up but so far so good. I am coming from a 3950X so I knew my raw multi core performance would drop but I was more focused on the 8-12 core performance with this move.

Destiny 2, whilst still borked on the RDNA2 based GPU's, no longer exhibits such excessive FPS spikes. I think the faster per core performance combined with higher clocks in game is effectively brute forcing its way through whatever causes the GPU to suddenly drop usage and clocks in game. For example previously entering the Tower hanger would seem framerates tank from 140ish to 75-85, now they only drop and then lock at ~110. Resolution is 2880x1620 (1080p at 150% res scale) thus I should be entering GPU limitations at this point but obviously whatever is causing the RDNA2 GPU issues in the game clearly is linked with per core CPU bottlenecks*.

DaVinci Resolve has also seen a 43 second reduction render time on my test 22 minute 1080p60 Youtube clip which is a nice little bonus. :)


More testing and tweaking to do as I haven't even touched any of the per core overclocking potential yet. :D



*It is known that editing the multithreading option within the CVARS file brings back the missing performance (thus suggesting the CPU bottleneck can be "fixed" or at least optimised for) but this comes with a massive penalty in the form of missing textures and general visual glitches.


EDIT: Just been messing around with the Curve Optimiser a bit and with just a -15 all core (no other changes) I am now seeing 4.425Ghz all core in CB R20 and 4.6-4.7 in DaVinci Resolve when rendering out a video (hits the CPU for around 60% load across 14-16 threads). Knocked another 20 seconds off my render time bringing it up to just over 1 minute faster in total than the 3950X on the same output. Oh and its 4 degrees cooler to boot!

The latter is far more important to me and from what I can tell comes at no negative cost to single core boost which is still up to 4.95Ghz.

Oh and its 4 degrees cooler to boot!
 
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Yes mucking about with things myself.
CBr23 single 1639 multi 23000
I am looking forward to that chaps CTR2.1 thing to arrive with its promised CurveOptimisation inbuilt, just to see if it can auto do what I can't :P
It was telling me to see one CXX to an all core of x and the other to y, but my cinebench scores were not as good as with the below.
I've set the 200MHz, and then curve optimised my main core to -6, second best to -11 and the rest to -17. Temps max at 74. Would prefer it under 70, as the cooler makes virtually no noise below 70.
Not sure what to do next?
 
Ran CTR 2.0 RC5 diagnostic scan on my 5950x (Batch BG-2114SUS).

DIAGNOSTIC RESULTS
AMD Ryzen 9 5950X 16-Core Processor
CPU VID: 1076
CPU TEL: 1025
Max temperature: 48.4°
Energy efficient: 4.27
Your CPU is GOLDEN SAMPLE
Recomended CCX delta: 200
Theoretical maximum CCX delta: 225
Recomended values for overclocking (P1 profile):
Reference voltage: 1100 mV
Reference frequency: 4350 MHz
Recomended values for overclocking (P2 profile):
Reference voltage: 1250 mV
Reference frequency: 4600 MHz
Recomended values for undervolting:
Reference voltage: 1000 mV
Reference frequency: 4150 MHz

Phoenix deactivated!

Dropped the VID from 1256mV to 1076mV over 32 steps during the process which seems quite a lot?
 
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utajoker said:
What aio coolers are people using on the 5900x?
Click to expand...

I move between a H100x with 2x ML120’s and a NH-D14 with single 140mm fan.

Still dialling things in but with a custom fan curve - prioritising noise over raw cooling performance, my 5900x with -15 on the curve optimiser hits 74c in DaVinci Resolve. This is cooler than with the air cooler however it is at a higher noise level. The lower temps did knock a further 8 seconds off my render time so I am not complaining!

Still tweaking further so hoping for further improvements but really happy with how it’s performing right now. :)
 
MG42Maniac said:
chip. I've used curve optimizer and used -12 on all cores and +200 on the boost. On a heavy all core workload like Cinebench it drops to 4.25GHz which seems a little low but boosts nicely when gaming.
Click to expand...
Try increasing PPT TDC EDC and this might help your all core clocks as your package power is running at 142w which is stock.
 
MG42Maniac said:
Yeah, I've noticed that now they spin up more they make a fair bit of noise. Any suggestions for quiet ones?

Assuming this is set from the BIOS? Any suggestion on values?
Click to expand...

185 125 170 is a good max to start at, then run a stress test, see what the temp stabilise at.
Might find your scores in CBr23 actually increase without actually changing anything other than this in BIOS, then start messing with curve optimiser, and it'll lower the temps over testing.
 
I will add my experience to the thread. Trying for maximum undervolt

So I after a week of testing using the machine about 14 hours of day. Multi loads, lots of idle, games , compiling I have finalised these settings. I did back off the offset due to a single random reboot while idle. Really pleased.
PBO limits disabled
C0 -30 All Core
Offset -0.1375
LLC Level 5
Boost 200
Running 4 stick of 8gb ram at 3333 @ 15,17,17,36 1.32 volts.

So depending on the what's happening it will multi core boost up to 4750. R23 sits around 4,700, Single core boost 5,150.

https://photos.app.goo.gl/EF3adFJbogsg5LCV8

https://photos.app.goo.gl/SEx3bMKjAu6KJSbx9
 
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