Intel VR / VRD
These are initial notes for CPU glitching branch of this project.
| Version | Control Protocol | Era | Example CPUs | Socket Platform |
| VRD 8.x | Analog PWM | NetBurst early | Pentium 4 Willamette | NW Socket 423/478 |
| VRD 9.x | Analog PWM | NetBurst | Pentium 4 Northwood/Prescott | Socket 478 / LGA775 early |
| VRD 10.x | Improved PWM | Prescott/Late NetBurst | Pentium 4 EE | Socket 775 early boards |
| VRD 11.0 | Multi-phase PWM | Core architecture | Core 2 Duo E6xxx/E4xxx | Socket LGA775 |
| VRD 11.1 | Enhanced Core 2 power | Core 2 Quad Q6600/Q9xxx | LGA775 | |
| VRD 11.2 | Refined loadline | Core 2 late era | 45nm Core 2 Quad | LGA775 |
| VRD 11.3 | Final LGA775 tuning | Core 2 extreme | QX9770 | LGA775 |
| VR 12.0 | SVID (digital control start) | Nehalem | i7-920 i7-860 | LGA1366 / 1156 |
| VR 12.1 | SVID enhanced | Westmere | Xeon X56xx | LGA1366 / 1156 |
| VR 12.5 | Fully digital VR | Sandy Bridge | i5-2400 i7-2600K | LGA1155 |
| VR 12.6 | Sandy/Ivy optimized | Ivy Bridge | i7-3770K | LGA1155 |
| VR 12.7 | SVID 2.0 | HASWELL/Broadwell | i7-4790K | LGA1150 |
| VR 13.0 | SVID 2.x | Skylake | i7-6700K | LGA1151 v1 |
| VR 13.1 | SVID 2.x | Kaby Lake | i7-7700K | LGA1151 v1 |
| VR 13.5 | SVID 2.x | Coffee Lake | i7-8700K i9-9900K | LGA1151 v2 |
| VR 14.0 | SVID 3.0 | Comet Lake | i9-10900K | LGA1200 |
| VR 14.1 | SVID 3.0+ | Rocket Lake | i9-11900K | LGA1200 |
| VR 15.x | SVID 4.0 | Alder Lake | i7-12700K i9-12900K | LGA1700 |
| VR 16.x | SVID 4.x | Raptor Lake | i9-13900K i9-14900K | LGA1700 |
This project is an independent, unofficial work based on publicly available information and reverse-engineering research, and is not affiliated with, endorsed by, sponsored by, or associated with Intel Corporation or its affiliates. It is provided "as is", without warranty of any kind. The author assumes no responsibility or liability for any use, misuse, damage, data loss, hardware failure, or other consequences arising from its use. Intel, Pentium, Core and related trademarks are the property of their respective owners and are used solely for identification and informational purposes.