How to Configure Biostar TB250-BTC for 6-GPU Mining Setup

Biostar TB250-BTC PRO Motherboard GPU Capacity

This motherboard supports up to 12 GPUs via PCIe x1 risers, though practical limitations apply:

• NVIDIA Cards: Max 8 GPUs
• AMD Cards: Max 8 GPUs
• Hybrid Setup: Combining NVIDIA + AMD can achieve 12-GPU mining.

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Essential BIOS Settings for Mining

Follow these steps after installing your GPUs:

1. Update BIOS: Ensure you're using the latest version 503 from Biostar's official site.

2. OS Installation:

   • Install Windows 10 (1703 or later) via UEFI mode with 1 or 5 GPUs first.
   • After OS setup, install all 6 GPUs and adjust BIOS settings.

3. Key BIOS Adjustments:

   • Disable unnecessary onboard devices (e.g., audio, unused SATA ports).
   • Set PCIe speed to Gen1 for stability (Settings > Advanced > PCI Subsystem).
   • Enable Above 4G Decoding (Settings > Advanced > System Agent Configuration).
4. Save & Reboot: Navigate to Save & Exit > Save Changes and Reset.

👉 Best PCIe risers for mining

Troubleshooting Black Screens or GPU Detection Issues

Common Causes & Fixes:

• Loose Connections: Reseat GPUs and risers. Check PCIe power cables.
• Insufficient Power: Use a 1000W+ PSU with separate 12V rails for GPUs.

• Driver Conflicts:

  • Use DDU to clean old drivers before installing new ones.
  • Avoid mixing AMD and NVIDIA drivers unless running hybrid setups.
• BIOS Reset: Short the JCMOS1 pins for 5 seconds to reset defaults.

Optimal 6-GPU Configuration Steps

1. Hardware Setup:

   • Place GPUs evenly across PCIe slots (use x1-to-x16 risers for x1 slots).
   • Avoid M.2 PCIe SSDs—they consume PCIe lanes needed for GPUs.

2. Software Setup:

   • Install mining OS (e.g., HiveOS) or Windows 10 with minimal background processes.
   • Configure mining software (e.g., NiceHash, GMiner) to recognize all GPUs.

3. Stability Checks:

   • Monitor temps (ideal: <75°C for GPUs).
   • Test each GPU individually if instability occurs.

FAQs

Q: Why does my 5th GPU show a black screen?

A: Likely due to PCIe lane allocation or power issues. Try:

• Re-seating the GPU/riser.
• Swapping PCIe slots to isolate faults.

Q: How to downgrade PCIe to 1.0 for better compatibility?

A: In BIOS:

1. Navigate to Advanced > PCI Subsystem.
2. Set PCIe Speed to Gen1.

Q: Can I use NVIDIA and AMD GPUs together?

A: Yes, but avoid driver conflicts by:

• Installing drivers separately.
• Using mining software that supports hybrid setups (e.g., Minerstat).

Final Notes

• Power Supply: Use 80+ Gold PSUs with 1200W+ capacity for 6 GPUs.
• Cooling: Maintain ambient temps below 30°C; use open-air rig frames.
• BIOS Recovery: Always backup original BIOS before flashing updates.

For advanced tuning, refer to Biostar’s mining-specific BIOS profiles. Happy mining! 🚀

👉 Start mining with optimized hardware

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