| Variable | Offset | Default | Desired | Comment |
|---|---|---|---|---|
| Above 4GB MMIO BIOS assignment | 0x79A | 0x00 (Disabled) | 0x01 (Enabled) | |
| ACPI Removal Object Suppport | 0x491 | 0x00 (Disabled) | 0x00 | |
| CFG Lock | 0x4ED | 0x01 (Enabled) | 0x00 (Disabled) | |
| CSM Support | 0xFC8 | 0x01 (Enabled) | 0x00 (Disabled) | |
| DVMT Pre-Allocated | 0x795 | 0x02 (64M) | 0x02 (64M) | |
| DVMT Total Gfx Memory | 0x796 | 0x02 (256M) | 0x03 (MAX) | |
| GPIO filter | 0x47B | 0x00 | 0x01 | |
| GPIO3 Force Pwr | 0x45F | N/A | 0x01 | |
| Native OS Hot Plug | 0x479 | N/A | 0x01 | |
| Skip PCI OptionRom | 0x48F | 0x00 | 0x00 | |
| SW SMI on TBT hot-plug | 0x47A | 0x01 (Enabled) | 0x01 | |
| Thunderbolt Boot Support | 0x45B | 0x00 (Disabled) | 0x01 | |
| Thunderbolt Usb Support | 0x45A | 0x00 (Disabled) | 0x01 | |
| Thunderbolt(TM) PCIe Cache-line Size | 0x45E | 0x20 (32) | 0x80 (128) | |
| Wait time in ms after applying Force Pwr | 0x460 | 0xC8 (200) | 0xC8 (200) | |
| Wake From Thunderbolt(TM) Devices | 0x452 | 0x01 (Enabled) | 0x01 | |
| Speed Shift Technology | 0x4BC | 0x00 (Disabled) | 0x01 | |
| SpeedStep | 0x4BA | 0x01 (Enabled) | ||
| from here on watch out. | ||||
| EHCI Hand-off | 0x2 | 0x00 (Disabled) | 0x00? | Don't change if you don't know what you are doing |
| XHCI Hand-off | 0x1B | 0x01? | Don't change if you don't know what you are doing | |
| Low Power S0 Idle Capability | 0x13 | 0x00 (Disabled) | 0x00 | Sleep state for hibernation? |
| DVMT Total Gfx Mem to MAX | 0x796 | 0x2 (256M) | 0x3 (MAX) | |
| Overclocking Lock | 0x59C | 0x01 (Enabled) | 0x0 (Disabled) | |
| Overclocking Feature | 0x65C | 0x00 (Disabled) | 0x01 (Enabled) | |
| XTU Interface | 0x65D | 0x00 (Disabled) | 0x01 | |
| Core Voltage Offset Prefix | 0x664 | 0x00 (+) | 0x01 (-) | |
| Core Voltage Offset | 0x662 | 0x00 | 0x78 (120 mV) | Play with it |
| Uncore Voltage Offset Prefix | 0x865 | 0x00 (+) | 0x01 (-) | |
| Uncore Voltage Offset | 0x863 | 0x00 | 0x78 | should be same as core, but can be less if unstable |
| GT Voltage Offset Prefix | 0x86D | 0x00 (+) | 0x01 (-) | |
| GT Voltage Offset | 0x86B | 0x00 | 0x64 (100 mV) | |
| GT Unsliced Voltage Offset Prefix | 0x876 | 0x00 (+) | 0x01 (-) | |
| GT Unsliced Voltage Offset | 0x874 | 0x00 | 0x64 (100 mV) | |
| PCI Express Root Port 13 | 0x95A | 0x01 (Enabled) | 0x00 (Disabled) | found it here so, dont applie it, if you don't know what it does |
| Debug Interface Lock | 0x59E | 0x01 (Enabled) | ||
| Debug Interface | 0x59D | 0x00 (Disabled) | ||
| Direct Connect Interface | 0x59F | 0x00 (Disabled) | ||
| DCI enable (HDCIEN) | 0x899 | 0x00 (Disabled) | ||
| Boot performance mode | 0x4BD | 0x1 (Max Non-Turbo Performance) | 0x0 (Max Battery) or 0x2 (Turbo Performance) |
Last active
January 7, 2022 12:52
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