(Final edit with all received suggestions and found solution appended at the end)
My goal is to replace the GTX 1080 Ti in my PC with an RTX 4080 Super. So far my attempts at swapping the 1080Ti to the 4080S have resulted in severe stuttering and visual artefacts, frequent monitor signal losses as well as random shutdowns and BSODs, even under light load. These symptoms have forced me to return the 1080Ti to the assembly, as the stuttering only emerges with the 4080S installed.
With stuttering, I mean drops in framerate that last for 1-5 seconds with intervals of 1-10 seconds. The framerate drops from 100-120Hz to 1-10Hz. The interval and duration between stutters depend on the load somewhat unpredictably. Heavy load induces steady 2 second stutters every 1-2 seconds, while light load induces them more randomly within the duration and interval brackets I first mentioned above.
Monitor signal losses happen many times a minute, and shutdowns often with them. BSODs happen less frequently, but at least once every 15-30 minutes. So far I have seen at least the following codes and drivers(?) mentioned in the BSODs:
- code: VIDEO_SCHEDULER_INTERNAL_ERROR
- code: DRIVER_IRQL_NOT_GREATER_OR_EQUAL
- driver(?): nvlddmkm.sys
Starting setup:
- Motherboard: Asrock B760M-ITX/D4 WiFi
- CPU: Intel i5-13600K
- CPU cooler: Noctua NH-L12S w/ NF-A12x15 PWM
- RAM: 2x Kingston 32GB 3200Mhz DDR4 CL16 HyperX Fury Black
- GPU: Gigabyte GTX 1080 Ti GAMING OC 11GB
- PCIe x16 riser cable: PCIe 3.0, included with case
- SSD M.2: Samsung 970 PRO M.2 NVMe 1TB
- SSD SATA: Samsung 860 EVO SATA 2,5" 2TB*
- PSU: Seasonic Prime Ultra Platinum 750W
- Case: SSUPD Meshilicious
- Operating system: Windows 10 Pro (exact version unknown)
- Video drivers: GeForce GRD 556.12
New components:
- GPU (new): Asus GeForce RTX 4080 SUPER ProArt - OC Edition 16GB
- PSU (new): Seasonic Prime PX-750
- PSU–GPU cable #1: Seasonic 2x8pin 12VHPWR (compatibility verified)
- PSU–GPU cable #2: 3x Seasonic 8-pin PSU-PCIe + Asus adapter to 12VHPWR
Things I have tried in chronological order:
- Removed 1080Ti, installed 4080S with PSU–GPU cable #1 (All mentioned symptoms emerge)
- Checked that integrated graphics are not used
- Turned off GPU hardware scheduling
- Turned on GPU hardware scheduling
- Uninstalled GeForce Experience
- Uninstalled HD Audio Drivers
- Uninstalled all video drivers using DDU
- Installed GeForce GRD 551.??
- Installed GeForce GRD 555.85
- Installed GeForce GRD 556.12
- Uninstalled MSI Afterburner
- Did a clean reinstall of Windows 10 (22H2)
- Flashed BIOS to the most recent version
- Installed Intel chipset + LAN drivers
- Installed GeForce GRD 551.??
- Installed GeForce GRD 555.85
- Installed GeForce GRD 556.12
- Set RAM speed to DDR4 standard 2400MHz
- Set RAM speed to XMP 3200MHz
- Swapped displays and DP cables
- Made sure DP cables are connected to the GPU
- Removed 4080S, installed 1080Ti (All mentioned symptoms disappear)
- Removed 1080Ti, installed 4080S with PSU–GPU cable #2 (All mentioned symptoms re-emerge)
- Removed old PSU, installed new PSU
- Set RAM speed to DDR4 standard 2400MHz
- Set RAM speed to XMP 3200MHz
Things I have not tried:
- Replacing the RAM sticks
- Replacing the 4080S with another 4080S
- Replacing the 4080S with e.g. 4070 Ti
- Replacing the motherboard
- idk help
(Final edit with solution at the bottom)
All suggestions and thoughts I received from here and Reddit r/buildapc:
- Have you deleted the old GPU drivers and installed the new GPU ones
- use DDU in safemode, wipe out the old nvidia drivers, install 4080super drivers from nvidia
- more psu wattage (850w-1000w)
- Cables. Have you switched them out and tried other cables? Often overlooked. Check your cable versions and compare.
- Does the 4080 have an HDMI slot you can try?
- Well, starting with the basics, are you sure you’re not using your iGPU instead of the 4080?
- Look what windows power plan youre using, it can mess with things. Just use high performance. Also reenable the e-cores that aint it. Then check in nvidia control panel if power management is in performance mode.
- What happens if you place the 4080 Super into another computer rig?
- I wonder if the Nvidia driver and scheduler error, from the dump file, is a result of the problem, and not the initial cause.
- "The framerate drops from 100-120Hz to 1-10Hz": The 1-10Hz part reminds me of adaptive sync (e.g. g-sync, freesync).
- Download, install, run Samsung Magician. Update firmware of all Samsung SSDs.
- You’re connecting the gpu with a pci 3 riser? Does the 4080 super support pci 3? (3rd place!)
- install gpu without riser (2nd place!)
- force bios to use pcie 3.0 (winner!)
I was aware of the existence of the different PCIe generations and how their bandwidth goes, but did not know enough to realize they had to be deliberately configured this way in this situation. Thus, without you guys, I would still have a 1000EUR unusable brick on my table and a 1080Ti in my PC, but thanks to you, the problems are gone with a single blow and my framerates are 300% of what they used to be. So a big and heartfelt thank you to everyone who gave their suggestions! You made my week.
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