I'm currently running two Arctic 80mm server fans at 5000RPM zip tied together and they're being anchored onto the 24 pin ATX connector with two large zip ties and one small zip tie attached to the lower radiator tubing, to secure the two fans in place. Not the quietest fans at 100%, but they work at least. Temperatures went down from 47c to 39.2C.
I have been working on new Curve Optimizer values (-24 -15 -16 -22 -22 -22 -32 -26), to match my All Core -30 Daily Curve Optimizer setup. I've been using software called "StatusCore" to stress each individual core to help me get an idea on how much boost clock frequencies each core can reach with the given voltages. I have been able to set every core to boost upwards to 5,637-5.640Mhz with only 1.230V. I wanted to test stability with Y-cruncher SFT, because it's very sensitive to unstable PBO values; For example, my first setup was going to be -24 -15 -16 -23 -23 -23 -32 -27. This passed 7 hours of Aida64 but errored out after running for 20 minutes on Y-Cruncher SFT. I think there's more performance to be gained, so I'm going to see how low these core voltages can go. Maybe 1.225V is possible.
PBO Limits: Motherboard
Scalar: Auto (1x)
LLC: Auto
C States: Auto
I've been struggling with this for way too long. I recently ran Karhu with this setup at 1.25 VSOC and kept VDDG CCD-IOD set to .950mv and passed 10 hours (35,000%) but I was curious on if this would work with Prime95 and it errored after 1 hour and I assumed maybe I needed more VSOC, so I ran 1.26v and it still errored out. I decided to run TM5 and I started getting #6 errors, which indicated IMC instability, so I did 1.27 VSOC and passed 6 hours, but I still got an error after 1 hour of Prime95. At this point I was getting frustrated and I decided to narrow down where the errors were coming from and reduced the FCLK from 2200 to 2000 and kept VDDG's at .950mv to check for UCLK stability. I passed 9 hours with 6600 at 1.26 VSOC and FCLK set to 2000. So now I found the errors were because of the Infinity Fabric and began playing with the VDDG's. Turns out this chip does not like high VDDG's in my case (1.05 leads to errors within 30 minutes at 2200 FCLK). I started with 1.02V for the CCD-IOD, but this led to 2 cores in Prime95 failing within 1 hour, while the others passed 8 hours. I adjusted the voltage to 1.03V and one core failed after 1 hour of Prime95 while the others ended up passing at 8 hours. I came up with a theory that maybe the VDDG CCD was producing too much signal noise on the infinity fabric and set it to 1.02V, while IOD was set to 1.03V. This finally led to me passing this test for 10 hours.
I was able to play Forza Horizon at midnight and decided to run the in-game benchmark to see how this card performs. Prior to this, I did some maintenance on this card and added some fresh Liquid Metal and changed out the Thermal Putty, (This was a pain to clean). I updated the driver to 26.5.2 and these are my results. I went on to TechPowerUp to get a reference on the performance, and I'm actually impressed that it's doing this well. I haven't got the chance to test the upscaling yet, but I'll get around to doing that soon.
Motherboard: MSI X870E Tomahawk Wifi.
CPU: Ryzen 7 9850X3D w/ Curve Optimizer -30 All Core.
RAM: Corsair Vengeance CL-30 6400 1.4V Hynix A-Die (Overclocked to CL-32 8000 1.68V, GDM- Disabled).
GPU: XFX Mercury RX 9070 XT OC (Non-Magnetic).
This IMC is confusing me now. I've been able to run this chip at 1.15 VSOC and cleared 12 hours of Karhu and Y-cruncher with Furmark running over an hour with no issues. I went straight back into the Bios to see how much lower I can go. I managed to boot into 1.10 VSOC and did the usual test with Furmark and Y-cruncher VT3, but sadly it failed Linpack Xtreme after only 5 tests. This can boot into 1.05 VSOC but that instantly failed in Y-cruncher. At that point I just decided to try 1.12 VSOC and ran it back on Linpack for it to complete 50 tests (Screenshot in the end). (I will run Prime95 or TM5 around 12 hours with that setup in the next few days).
PBO Limits: Motherboard, Curve Optimizer set to -30 All Core.
RAM: Corsair Vengeance 32GB CL-30 6400 1.4 (Hynix A-Die 5.43.01).
SOC: 1.15V.
VDD: 1.65V.
VDDQ: 1.46V.
VDDIO: 1.38V.
VDDG: (IOD&CCD) .950mV
PHYRDL: 35/35.
DFE Read Training: Enabled
ProcODT PU: 40 Ohms.
ProcODT PD: Hi-Z.
DramDqDs: 40 Ohms.
I'm questioning what this IMC is made of at this point on the 9850X3D. After my previous post of me running 1.00 VSOC with CL-32 8000, along with 2200FCLK and .950mv VDDG CCD-IOD; I've been wondering how low this VSOC could even go in 1:1 mode; So, reopened my CL-26 6400 profile that previously ran with 1.20 VSOC at the time and set it to 1.15 VSOC out of curiosity. I started up Furmark and Y-Cruncher VT3 again for over an hour and expected it to error out immediately, only for it to keep going and it passed with no more than a 0.01 variation.
So, a month ago I was testing CL-28 6600 at 1.25 VSOC and .950mv VDDG IOD-CCD and got 35,000% coverage on Karhu and I took a look back at those timings and I was surprised that 2200 FCLK worked with only .950mv. Previously I tested CL-32 8000 with 1.15 VSOC, VDDG CCD at .900mv and IOD with 1.00V. At this point I was thinking about how low this could go and loaded these timings back in, but at only 1.00 VSOC and .950mv VDDG for CCD-IOD. I ran Furmark and Y-cruncher VT3 simultaneously for an hour to add as much stress to the SOC as I can to see if VT3 will error out and followed up with 100 runs of Linpack Xtreme. You'll see the GFLOPS reach 501 and creeped up to 502, but this is because the room temperature got lower at the end of the test. (It was almost 6 AM at this point and I was tired). I had PBO set to -30 All Core, because that's what I was using when I tested this previously. This CPU is getting weirder and weirder as I go. Now I have to test how low I can get the VSOC to go at 6400 for 1:1 mode. GDM is Disabled and PHYRDL's are matching at 37/37 in this test.
I got a bit curious about matching my PHYRDL's for DDR5 8000 recently after putting it off for a bit. I found that I had to raise the DramDqDs to 40 Ohms from 34 Ohms and 1.47 for VDDQ/VDDIO. I'm guessing the output signaling was too strong. Now I'm more confuse on why my RAM sticks are running cooler and drawing less current. Temperatures before maxed out to 46c with 23c ambient temperatures while drawing 7 Watts. Now my temperatures are maxing out at 42c with 25c ambient temperatures while only drawing 5.75 Watts.