• Dell Latitude 5591
• 1.37.0

• https://forums.blurbusters.com/viewtopic.php?t=11586

setup_var_cv Setup 0x769 0x1 0x0

setup_var_cv Setup 0x82B 0x1 0x18

• Enable/Disable Overclocking Lock (BIT 20) in FLEX_RATIO(194) MSR

• Default: Enabled 1
• Ideal: Disabled 0

setup_var_cv Setup 0x659 0x1 0x0

• Configure MSR 0xE2[15], CFG Lock bit

• Default: Enabled 1
• Ideal: Disabled 0

setup_var_cv Setup 0x5BD 0x1 0x0

• Select DVMT 5.0 Pre-Allocated (Fixed) Graphics Memory size used by the Internal Graphics Device

• Default: Unknown
• Ideal: 64M 2

setup_var_cv Setup 0x8D2 0x1 0x2

• Select DVMT5.0 Total Graphic Memory size used by the Internal Graphics Device

• Default: Unknown
• Ideal: MAX 3

setup_var_cv Setup 0x8D3 0x1 0x3

• Enable/Disable above 4GB MemoryMappedIO BIOS assignment
• This is enabled automatically when Aperture Size is set to 2048MB

• Default: Disabled 0
• Ideal: Enabled 1

setup_var_cv Setup 0x8D7 0x1 0x1

• Select the Aperture Size

• Default: 256MB 1
• Ideal: 2048MB 15

setup_var_cv Setup 0x821 0x1 0xF

• Enable PCH to aggressively enter link power state

• Default: Enabled 1
• Ideal: Disabled 0

setup_var_cv Setup 0xA7E 0x1 0x0

• Check to enable render standby support

• Default: Enabled 1
• Ideal: Disabled 0

setup_var_cv Setup 0x81B 0x1 0x0

• Select the LCD panel scaling option used by the Internal Graphics Device

• Default: Auto 0
• Ideal: Off 1

setup_var_cv Setup 0x81A 0x1 0x1

• Enable/Disable WatchDog Timer

• Default: Enabled 1
• Ideal: Disabled 0

setup_var_cv Setup 0x7D1 0x1 0x0