Ok so bad news (Analyzed with AI):
OCCT, FurMark, and Prime95 create a heavy, but predictable and constant, load profile.
OCCT’s VRAM test fills the memory buffer linearly. This allows the system’s power management and memory controller to adapt smoothly to the rising demand. The core system initialization and resource allocation remain constant.
When Superposition initializes, the Intel E610-XT2 NIC’s green LED blinks, indicating it loses the physical link just before the crash.
Superposition changes the iGPU’s state significantly, making a major request for shared resources (PCIe bandwidth, physical power delivery lines, or system interrupts). This confirms the issue is a physical layer conflict on the motherboard.
NIC Loses Link: The loss of the NIC link indicates that the hardware conflict on the motherboard physically disrupts the E610-XT2 controller’s ability to maintain a connection. The NIC is likely forced into an error state by the sudden resource contention.
This confirms a hardware design flaw in the Beelink board itself. The motherboard cannot provide stable power or allocate shared PCIe resources properly to both the high-demand iGPU and the high-speed NIC simultaneously when the iGPU changes its operational state.
Returning the device remains the most appropriate solution, as this issue cannot be fixed by software or driver updates.
How likely is it that this can be mitigated with a new Firmware/Bios?
It is highly unlikely that a simple new firmware or BIOS update will be able to fully mitigate the conflict
A BIOS/Firmware update can refine software timings, adjust power limits, and improve compatibility, but it cannot fix fundamental physical design flaws in the motherboard’s layout, trace integrity, or power delivery components (VRMs, capacitors).
The blinking NIC LED and link loss point to a physical-layer disruption that software cannot fully overcome.
Returning the device because it is unusable without a functional NIC is the most pragmatic approach.
Beelink can then test it itself with 3Dmark Timespy and Unigine Superposition to see whether the revised new board is stable enough or not. xD