Hi all, I recently shared the World #1 Air-Cooled Build with a Shunt Modded 5090/9950X3D/96GB 6000CL26 (Link). There were some PMs that questioned the stability of the shunt mod, so I wanted to fully share all my settings and show that yes, the build is able to handle a 5090 with 800w+ power draw indefinitely, at 25C ambient.
GPU Stress Test Results with 24/7 Stable OC Settings
- Speedway Stress Test (99.1%) Screenshot, Link
- Port Royal Stress Test (97.5%) Screenshot, Link
Speedway Stress Test Power Draw, Clock, voltage, and Temperatures
| Power Draw Reading (W) | Actual Power Draw (W) | Clock (MHz) | Core Voltage (V) | Core Temp (Celsius) | Memory Temp (Celsius) | |
|---|---|---|---|---|---|---|
| Idle | 9 | 18 | 555 | 0.8 | 32 | 44 |
| Idle with 3DMark Open | 40 | 80 | 2700 | 0.93 | 35 | 48 |
| During Bench | 405 | 810 | 3247 | 1.07 | 75 | 68 |
| Stress Test Last Run | 405 | 810 | 3210 | 1.07 | 85 | 76 |
As you can see above, the air cooled setup can indefinitely stably run at 800w+ while maintaing 99%+ performance of the max OC settings.
Detailed GPU 24/7 Stable OC settings are as follows.
- Card model: Gigabyte Aorus Master 5090
- vBIOS switch: Performance
- Shunt Mod: 2mOhm to 1mOhm (pic), 600W –> 1200W Power Limit
- Power Limit: 100%
- Core Voltage: +100
- Pic of Curve
Curve Details
- Curve 0-950mv: +255
- Curve 950-1075mv: +285
- Curve flattened at 1075mv, 3330 mHz
These settings are slightly lower than the max OC settings, but are 24/7 stable under my setup.
For your reference, the World Record benchmarks from the previous link are also found below, showing that this setup can also be pushed just a bit more.
| Benchmark | Score | Ranking | HOF | Results Link |
|---|---|---|---|---|
| Speedway | 16559 | #9 | #46 | Link |
| Steel Nomad | 17125 | #11 | #46 | Link |
| Port Royal | 43378 | #15 | #67 | Link |
Finally, the full PCPartPicker Build List can be found here.