MSI Ventus RTX 3070 3X OC — crashing under load. MATS reports no memory errors, which means the memory modules are fine. The culprit? A faulty GPU core. In this video, I perform a complete GPU core swap — the graphics card equivalent of a heart transplant. Using a donor core that was already reballed, I remove the original die, clean the pads, install the replacement, and validate with full stress testing. This is an advanced repair for when standard memory diagnostics don't find the problem. In this video, you will see: - Crash symptom demonstration under Heaven benchmark - MATS memory test confirms no memory errors - Disassembly and core removal on the rework station - Donor core preparation (pre-reballed) - New core installation and reflow - Resistance check on all power rails - MATS and NVMT validation - Windows boot and driver install - FurMark and Heaven stress tests — stable - Core swap vs VRAM upgrade comparison Chapters: 00:00 GPU Core Swap — Heart Transplant for Graphics Cards 00:30 MSI Ventus RTX 3070 Crashing Under Load 01:00 Heaven Benchmark Crash Demonstration 01:30 MATS Passes — No Memory Errors 02:00 Faulty GPU Core Diagnosis 02:30 Disassembly and Donor Core Overview 03:00 Core Removal on the Rework Station 06:00 Resistance Check After Core Installation 07:00 MATS and NVMT Validation Passed 09:00 Card Assembly and First Boot 12:00 Windows Boot — Drivers Loaded 12:30 FurMark Stress Test — Stable 13:30 Heaven Benchmark — No Crash 14:30 Core Swap vs VRAM Upgrade Discussion 15:00 Closing ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 💾 Memory Testing Software: https://gpusolutions.net/product/nvidia-vram-test-usb-bundle-uefi-legacy-digital-download/ 🔧 ALL TOOLS I USE — Full List With Buy Links: https://gpusolutions.net/repair-tools/ Tools used in this repair: BGA Rework Station (HonTon R490): https://s.click.aliexpress.com/e/_c4mXTATb Preheater (Mechanic IX5 Ultra): https://s.click.aliexpress.com/e/_c4bHsinl Preheater Mat: https://s.click.aliexpress.com/e/_c3P1JWOj 0.5mm Leaded Solder Balls: https://s.click.aliexpress.com/e/_c2IZoJpz RTX 2060-3090 BGA Stencil Kit: https://s.click.aliexpress.com/e/_c3uniK9f Amtech Flux: https://s.click.aliexpress.com/e/_c4BomGwr Mechanic 559 Flux: https://s.click.aliexpress.com/e/_c3EtCWun Soldering Iron (Aifen A9): https://s.click.aliexpress.com/e/_c4OhnaB7 Mechanic Tweezers: https://s.click.aliexpress.com/e/_c39GUGcL Electric Screwdriver (CreationSpace): https://s.click.aliexpress.com/e/_c3nQpSDj Multimeter (OWON XDM1241): https://s.click.aliexpress.com/e/_c4ED6C5J Thermal Paste (GD2): https://s.click.aliexpress.com/e/_c2y0KczX Thermal Pads (Upsiren): https://s.click.aliexpress.com/e/_c3iFPwet Cleaning Cloth (Sunshine Magic): https://s.click.aliexpress.com/e/_c3uQmiZJ ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🛠️ NEED YOUR GPU REPAIRED? Book Your Repair: https://gpusolutions.net/book-device Repair Pricing: https://gpusolutions.net/detailed-repair-cost/ FAQ & Process: https://gpusolutions.net/faq International Shipping: https://gpusolutions.net/international-shipping/ ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ❤️ SUPPORT THE CHANNEL: Join as a Member: https://www.youtube.com/channel/UCgSk9-gW8J-OteJfdX9Q_rQ/join Subscribe: https://www.youtube.com/@GraphicsCardRepairs-tk7ql?sub_confirmation=1 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🌐 CONNECT: Website: https://gpusolutions.net All My Repair Tools: https://gpusolutions.net/repair-tools/ Email: [email protected] ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 📺 RELATED VIDEOS: GPU Reballing Fundamentals: https://youtu.be/iArDb1-2UvA Memory Chip Reballing: https://youtu.be/NUcRiPjry40 Broken Memory Pad Repair: https://youtu.be/OnTLb69QiCo RTX 4090 Repair (Error Code 43): https://youtu.be/osT0WqbdXwU RTX 3070 No Display: https://youtu.be/M7k_lhT4b_s RTX 3070 Not Detected: https://youtu.be/1APveZc80dw RTX 3060 Ti Not Detected: https://youtu.be/Vd4a9wxToV8 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🔥 Tags: #GPURepair #RTX3070 #MSI #Ventus #CoreSwap #CrashUnderLoad #BGAReball #Adv
