Kepler BIOS Tweaker (KBT) is a utility designed to modify the BIOS settings of NVIDIA graphics cards based on the Kepler architecture. The software features an intuitive interface that makes it accessible to users of all skill levels, from beginners to advanced enthusiasts. KBT is compatible with Kepler-based GPUs, specifically the GTX 600 and GTX 700 series graphics cards. The GPU BIOS serves as essential firmware that initializes the graphics hardware during startup and facilitates proper communication between the graphics card and both the operating system and its drivers.
| KEPLER BIOS TWEAKER – COMPREHENSIVE OVERVIEW | |
|---|---|
| Software Name | Kepler BIOS Tweaker (KBT) |
| Developer | SVL7 |
| Category | GPU BIOS Editor / Modification Tool |
| Target Hardware | NVIDIA GeForce GTX 600/700 series GPUs (Kepler Architecture) |
| Supported Architectures |
• GK104 • GK106 • GK107 • GK110 • GK208 |
| Operating System | Windows (XP, Vista, 7, 8, 8.1, 10, 11) |
| License | Freeware |
| Primary Purpose | Modify and customize NVIDIA Kepler GPU BIOS parameters for overclocking, undervolting, and optimization |
| KEY FEATURES | |
| Clock Frequency Adjustment |
• GPU Core Clock modification • Memory Clock modification • Boost Clock settings • Base Clock settings |
| Voltage Control |
• Core Voltage (VCore) adjustment • Voltage table editing • Power states voltage configuration • Overvoltage settings |
| Power Limit Settings |
• TDP (Thermal Design Power) limit modification • Power target adjustment • Maximum power draw settings • Power boost parameters |
| Temperature Controls |
• Temperature target settings • Thermal throttling thresholds • Fan curve modification • Temperature limits |
| Fan Control |
• Fan speed curve editing • Minimum/Maximum fan speed settings • Fan profile customization • Acoustic optimization |
| Memory Settings |
• Memory timing adjustments • VRAM frequency modification • Memory voltage settings • Memory bandwidth optimization |
| Boost Technology |
• GPU Boost 2.0 parameters • Boost table editing • Voltage/Frequency curve modification • Boost limits adjustment |
| BIOS Information Display |
• BIOS version information • GPU specifications • Device ID and subsystem ID • VRAM type and size • Current settings overview |
| TECHNICAL CAPABILITIES | |
| File Operations |
• Open and read GPU BIOS files (.rom) • Save modified BIOS • Export settings • Backup original BIOS • Compare different BIOS versions |
| Checksum Functions |
• Automatic checksum calculation • Checksum verification • Checksum fixing for modified BIOS • CRC validation |
| P-States Management |
• Performance state (P-State) editing • P0, P1, P2… state configuration • Clock/Voltage per state • State transition parameters |
| Advanced Options |
• Hardware configuration flags • PCIe configuration • Display output settings • Power management features • Debug mode options |
| USE CASES | |
| Overclocking | Increase GPU performance by raising clock speeds and voltage beyond factory settings |
| Undervolting | Reduce power consumption and heat generation while maintaining performance |
| Power Optimization | Increase power limits for better sustained performance or reduce for efficiency |
| Thermal Management | Adjust temperature targets and fan profiles for better cooling or quieter operation |
| BIOS Repair | Fix corrupted BIOS or restore functionality to bricked graphics cards |
| Custom Modifications | Create customized BIOS versions for specific workloads or use cases |
| ADVANTAGES | |
| Pros |
✓ User-friendly graphical interface ✓ Comprehensive control over GPU parameters ✓ Free to use ✓ No installation required (portable) ✓ Automatic checksum correction ✓ Detailed parameter visualization ✓ Active community support ✓ Regular updates (during active development) ✓ Backup and restore capabilities ✓ Precise voltage and frequency control |
| RISKS & WARNINGS | |
| Potential Risks |
⚠ GPU Bricking: Incorrect BIOS modifications can permanently damage the graphics card ⚠ Warranty Void: BIOS modifications typically void manufacturer warranty ⚠ Instability: Improper settings can cause system crashes and data loss ⚠ Hardware Damage: Excessive voltage or power can physically damage components ⚠ Overheating: Inappropriate thermal settings can lead to overheating ⚠ No Undo: Once flashed, changes require re-flashing to revert |
| Safety Precautions |
• Always backup original BIOS before modifications • Make incremental changes and test thoroughly • Monitor temperatures and stability after flashing • Keep a known-good BIOS backup accessible • Research your specific GPU model before modifying • Have a BIOS recovery method ready • Understand what each parameter does before changing it • Test with stress testing tools after modifications |
| COMPATIBLE GPU EXAMPLES | |
| GTX 600 Series | GTX 650, 650 Ti, 660, 660 Ti, 670, 680, 690 |
| GTX 700 Series | GTX 750, 750 Ti, 760, 770, 780, 780 Ti, Titan, Titan Black |
| Professional Cards | Some Quadro K-series cards (K2000, K4000, K5000, K6000) |
| RELATED TOOLS | |
| Companion Software |
• GPU-Z: Extract BIOS from GPU • NVFlash: Flash modified BIOS to GPU • Maxwell BIOS Tweaker: For newer Maxwell architecture • MSI Afterburner: Test overclocking settings before BIOS modification • FurMark/Heaven: Stress testing after modifications |
| WORKFLOW | |
| Typical Usage Steps |
1. Extract current BIOS using GPU-Z 2. Open BIOS file in Kepler BIOS Tweaker 3. Review current settings and parameters 4. Make desired modifications carefully 5. Save modified BIOS file 6. Verify checksum is corrected 7. Flash modified BIOS using NVFlash 8. Test stability and performance 9. Monitor temperatures and behavior 10. Adjust if necessary or revert to backup |
| CURRENT STATUS | |
| Development Status | Legacy software – supports older Kepler architecture. For newer GPUs (Maxwell, Pascal, Turing, Ampere, Ada), other tools are required |
| Community | Active user community on overclock.net, TechPowerUp forums, and Reddit |
| Availability | Available on TechPowerUp and overclocker forums |
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