Hi All,

I'm making this thread to guide those who are having issues with their PSUs (power supplies units) and 300 series Overclocking settings.
Please provide true stable overclocking and you power supply model.

Feel free to provide any ideas or suggestions.
 
OC settings:
 
1.  rrvaliente43 - 3080 FTW3 Ultra: +100/+800 Memory, CPU: 3900X: undervolted to 1.2v and clocking at 4.2 on all cores.
Seasonic 750w Focus+ Platinum
2.  jankerson - 3080 FTW3 Ultra: (EVGA OC 450W VBIOS): +100/+1400 memory for Port Royal and Superposition only.
 +60ish/+600 depending on the benchmark, program.
Corsair HXI 850W, 3 separate PCIe cables.
3.  Delwyn69 - 3080 FTW Ultra: 118% Power limit, 430 Watts in OCCT, +100 Voltage slider. Card had to clock down pretty hard, poor thing, CPU: 9700k 4,9Ghz, 1,32VCore, 
Bequiet! dark power 850
4.  jilljill2002 - 3080 FTW3 Ultra: (450W beta BIOS): +140/+900118% PL+100 mv  
Corsair CX750M
5.  bmgjet - 3090 XC3 Ultra: Daily clocks: +130 core +400 memory (Benchmark clocks +140 core +600 memory)
Curve capped to 1V. which is 2085mhz, CPU: 7900X @ 4.9GHZ.
EVGA PSU 1000W 
6.  Yikesdee - EVGA FTW3 Ultra: +60 Core +1200 Mem (is there problem with going with so high mem? I don't see any artifacts/crashes and it did increase overall fps/score in Unigine heaven) 105% PL, Aggressive curve, CPU: 8700K @ 5.0Ghz
Corsair platinum HX1000i
7.  I_R0M_I - 3080 FTW3 Ultra: (450W beta BIOS) +140/+700 118% PL +100 mv, Max clock ive hit is 2145, average is more like 2040
8.  ehabash1 - 3090 FTW: +200 core and +900 memory, I can run +1050 on memory but i have to dial back core to about +160-170. +200 core for benchmarks but for gaming i tried only +175 until i stress test this
EVGA PSU 1200 P2
9.  

3080 FTW3 Ultra (EVGA OC 450W VBIOS): +100/+1400 memory for Port Royal and Superposition only.
 
+60ish/+600 depending on the benchmark, program.
 
Corsair HXI 850W, 3 separate PCIe cables.

jankerson
3080 FTW3 Ultra (EVGA OC 450W VBIOS): +100/+1400 memory for Port Royal and Superposition only.
 
+60ish/+600 depending on the benchmark, program.
 
Corsair HXI 850W, 3 separate PCIe cables.

What kind of scores and temps are you getting on Port Royal?

OC all depends on the load.
I tested power draw on OCCT and it's amazing, it gets really sick power draw from your whole system, CPU even reached TJmax for the first time when stressing both GPU and CPU 100%, having cpu radiator at the top does have disadvantages with this hot card.
 
Bequiet! dark power 850, stable:  CPU 9700k 4,9Ghz, 1,32VCore
                                                GPU 3080 FTW Ultra 118% Power limit, 430 Watts in OCCT, +100 Voltage slider. Card had to clock down pretty hard, poor thing.
 

3080 FTW3 Ultra
450W beta BIOS
+140/+900
118% PL
+100 mv
Cosair CX750M
 
Port Royal : 12150
Max Clock frequency : 2115
 
Not Stable I must say, just use for benchmarking and I cannot get pass on each run.
 

EVGA FTW3 Ultra, +60 Core +1200 Mem (is there problem with going with so high mem? I don't see any artifacts/crashes and it did increase overall fps/score in Unigine heaven)
 
105% PL, Aggressive curve
Corsair platinum HX1000i
8700K @ 5.0Ghz
 
should I touch the voltage slider on X1? it's currently set on 0
and I think if I go over 70~80 core it crashes heaven I think.. I'll try again but I think it crashed

I_R0M_I
Currently running
 
3080 FTW3 Ultra
450W beta BIOS
+140/+700
118% PL
+100 mv
 
Max clock ive hit is 2145, average is more like 2040
 
It will pass Heaven at 160 / 700 but i get much worse min fps. Like 9.5 fps. 

Is 700 mem the max u could go stable? I have 1200 and it seems on heaven to run without issues, but is going so high on mem healthy and safe?

so i did some port royal runs with +200 core and +900 memory. Whats weird is that i can go a lot higher on memory but i get score regression even though it's completely stable. could be a power limit issue
I can run +1050 on memory but i have to dial back core to about +160-170
 
anyways +200 core for benchmarks but for gaming i tried only +175 until i stress test this and make sure i can handle more for 24/7 settings.
 
I just got it last night so havent had enough time to tinker
Im using a 1200 p2 evga psu and a 3090 ftw3 gaming

YikesdeeEVGA FTW3 Ultra, +60 Core +1200 Mem (is there problem with going with so high mem? I don't see any artifacts/crashes and it did increase overall fps/score in Unigine heaven) 

 
Yikesdee - yeah, you can't run +1200.   What's happening is that you are actually losing performance...  Old memory on 2080 series or older would have artifacts or crash when pushed to the limits, but not the new memory on the 3000 series, this memory has "ECC" which is error correcting.  When it senses an error it pauses, fixes the error by running that memory request again, then continuing on....  it happens super-fast (10K mhz) however those little blips will eat away at your FPS and significantly boost your per-frame latency.   you'll find Port Royal will survive that, and maybe some games.. but try running memory @ +200mhz  and you will probably see better FPS, smoothness and consistency in real-world game play.
 
Also, using the latest beta Geforce Experience it has build in latency monitor in the FPS performance overlay - and you can see the latency bounce all over the place or drop to 0 when ECC kicks in.  for me that happens around +275.  some games and benchmarks can still run, but they get worse from this point and higher.
 

kring
 
Yikesdee - yeah, you can't run +1200.   What's happening is that you are actually losing performance...  Old memory on 2080 series or older would have artifacts or crash when pushed to the limits, but not the new memory on the 3000 series, this memory has "ECC" which is error correcting.  When it senses an error it pauses, fixes the error by running that memory request again, then continuing on....  it happens super-fast (10K mhz) however those little blips will eat away at your FPS and significantly boost your per-frame latency.   you'll find Port Royal will survive that, and maybe some games.. but try running memory @ +200mhz  and you will probably see better FPS, smoothness and consistency in real-world game play.
 
Also, using the latest beta Geforce Experience it has build in latency monitor in the FPS performance overlay - and you can see the latency bounce all over the place or drop to 0 when ECC kicks in.  for me that happens around +275.  some games and benchmarks can still run, but they get worse from this point and higher.
 

This is what I mentioned a few posts up. Maybe you posted this in the bios thread?

Anyway, just tried what you said. Dropped mem from 500 to 200. Saw a 90 point increase, 4 fps average more, 1.5fps worse on low, 10 fps worse on max.

Tried upping the clock to 140, which was giving me a terrible low of only 9fps. Tried that with 200 instead of 500 mem. Just got another 50 points, 2 fps average more. Low dropped 2fps more, max up 3fps.

Trying 160 clock gives me 20 points, 1fps average, lows are 4 fps better, max is 10 fps better.

You are definitely onto something! The memory was giving me my low fps spike, not the clock it seems.

This guy has 650 watts on an XC3 3080
 
https://www.youtube.com/watch?v=Bhf59wwSsn4

Hit 12602 in Port Royal with my 10400 haha. +1200 mem and +180 clock. 3rd PSU is EVGA 1000 g+. Holding first place on 3DMark for 3080/10400 combo on timespy, TSextreme, and port royal. 😁

Port Royal 12111
3080 XC3 Ultra +125 core +500 memory
x99 6850k @4.2 Ghz
32 GB Mem @ 3000Mhz
850 watt Corsair PSU 

• Seasonic TX warp engine with phase discriminators set at 850
• a tritium intermix of 3 by 8
• 16 electro-plasma distribution networks running with 4000 power transfer conduits
• A X390 deuterium injector with a 9900ks plasma manifold set to 5.2
• Powered by a 3080 warp core with ultra antimatter integrators.
• Its matter injector is set to 120 with a flow of 1120 units/s of electro-plasma.
• The EPS conduits are running at 118%.

If it fits, it sits.
 

 
9900K @ 5GHz 1.31V, 3080 FTW3 Ultra @ +130 core, +800 vRAM - Using an eVGA P2 1200W PSU (much overkill, I know :-D)