Quick UEFI/Legacy question

HarvesterOfSorrow · Sep 23, 2016

I noticed that in msinfo32 my BIOS mode is legacy, could it be because my other GPU does only have legacy mode? See this image.
http://imgur.com/a/yIFPP

Shou Miko · Sep 23, 2016

A lot of partners released UEFI bios' for their card when they became available from AMD/Nvidia but be aware that if u update the bios to UEFI u can't get any display in Legacy machine...

P4-630 · Sep 23, 2016

No problem here with my UEFI bios card, using legacy mode.

Shou Miko · Sep 23, 2016

P4-630 said:
No problem here with my UEFI bios card, using legacy mode.

Yeh "Legacy mode" not same as Native system legacy :laugh:

HarvesterOfSorrow · Sep 23, 2016

I think it used to say, BIOS mode UEFI, but could it be on legacy because my sapphire hd 7970 only have legacy, gigabyte hd 7970 have uefi?

gupsterg · Sep 23, 2016

I have had Hawaii cards and Fiji cards with UEFI roms, used 1 at a time on an Asus P5K Premium motherboard LGA 775 with Q6600 without an issue. AMD ROMs are Hybrid ROMs ie have a legacy section with UEFI module, so you won't have an issue with card which has UEFI ROM on legacy system. The legacy sytem will just ignore the UEFI module in vbios.

To make Windows show UEFI as bios mode you need your Z97 Pro Gamer in "Pure UEFI" mode (ie CSM = OFF). Windows IIRC only changes between legacy / UEFI on install, so even if you change to CSM=Off it may not show UEFI bios mode in Windows system info tool. I have not had 2 GPUs in a system at one time, even if I had them, I thought my PSU was not up to the job, so can not comment if only the primary display card requires UEFI module and it is irrelevant if secondary GPU does not.

If you get black screen/issue after setting CSM off then remove the card with legacy ROM, if mobo boots then you'll know you need to update the ROM on that card.

System Name	Amadeus
Processor	AMD Ryzen 9 5900X
Motherboard	Asus X570-F
Cooling	EK CR360
Memory	32Gb DDR4 @3600MHz
Video Card(s)	RTX 3080 10Gb
Storage	1Tb NVMe, 2Tb NVMe, 2x 2Tb USB HDD
Display(s)	Samsung C32JG50 & HP24y
Case	Lian Li O11 Dynamic
Audio Device(s)	SoundBlaster G6 with Sennheiser Game One
Power Supply	EVGA G2 750W
Mouse	Logitech G603
Keyboard	SteelSeries Apex M500
Software	Windows 11 Pro 64-bit
Benchmark Scores	TimeSpy: 16 201

System Name	Lynni PS \ Lenowo TwinkPad T480
Processor	AMD Ryzen 7 7700 Raphael \ i7-8550U Kaby Lake-R
Motherboard	ASRock B650M PG Riptide Bios v. 2.02 AMD AGESA 1.1.0.0 \ Lenowo 20L60036MX Bios 1.47
Cooling	Noctua NH-D15 Chromax.Black (Only middle fan) \ Lenowo WN-2
Memory	G.Skill Flare X5 2x16GB DDR5 6000MHZ CL36-36-36-96 AMD EXPO \ Willk Elektronik 2x16GB 2666MHZ CL17
Video Card(s)	Asus GeForce RTX™ 4070 Dual OC GPU: 2325-2355 MEM: 1462\| Nvidia GeForce MX™ 150 2GB GDDR5 Micron
Storage	Gigabyte M30 1TB\|Sabrent Rocket 2TB\| HDD: 10TB\|1TB \ SKHynix 256GB 2242 3x2 \| WD SN700 1TB
Display(s)	LG UltraGear 27GP850-B 1440p@165Hz \| LG 48CX OLED 4K HDR \| AUO 14" 1440p IPS
Case	Asus Prime AP201 White Mesh \| Lenowo T480 chassis
Audio Device(s)	Steelseries Arctis Pro Wireless
Power Supply	Be Quiet! Pure Power 12 M 750W Goldie \| 65W
Mouse	Logitech G305 Lightspeedy Wireless \| Lenowo TouchPad & Logitech G305
Keyboard	Akko 3108 DS Horizon V2 Cream Yellow \| T480 UK Lumi
Software	Win11 Pro 23H2 UK
Benchmark Scores	3DMARK: https://www.3dmark.com/3dm/89434432? GPU-Z: https://www.techpowerup.com/gpuz/details/v3zbr

System Name	AlderLake / Laptop
Processor	Intel i7 12700K P-Cores @ 5Ghz / Intel i3 7100U
Motherboard	Gigabyte Z690 Aorus Master / HP 83A3 (U3E1)
Cooling	Noctua NH-U12A 2 fans + Thermal Grizzly Kryonaut Extreme + 5 case fans / Fan
Memory	32GB DDR5 Corsair Dominator Platinum RGB 6000MHz CL36 / 8GB DDR4 HyperX CL13
Video Card(s)	MSI RTX 2070 Super Gaming X Trio / Intel HD620
Storage	Samsung 980 Pro 1TB + 970 Evo 500GB + 850 Pro 512GB + 860 Evo 1TB x2 / Samsung 256GB M.2 SSD
Display(s)	23.8" Dell S2417DG 165Hz G-Sync 1440p / 14" 1080p IPS Glossy
Case	Be quiet! Silent Base 600 - Window / HP Pavilion
Audio Device(s)	Panasonic SA-PMX94 / Realtek onboard + B&O speaker system / Harman Kardon Go + Play / Logitech G533
Power Supply	Seasonic Focus Plus Gold 750W / Powerbrick
Mouse	Logitech MX Anywhere 2 Laser wireless / Logitech M330 wireless
Keyboard	RAPOO E9270P Black 5GHz wireless / HP backlit
Software	Windows 11 / Windows 10
Benchmark Scores	Cinebench R23 (Single Core) 1936 @ stock Cinebench R23 (Multi Core) 23006 @ stock

System Name	Lynni PS \ Lenowo TwinkPad T480
Processor	AMD Ryzen 7 7700 Raphael \ i7-8550U Kaby Lake-R
Motherboard	ASRock B650M PG Riptide Bios v. 2.02 AMD AGESA 1.1.0.0 \ Lenowo 20L60036MX Bios 1.47
Cooling	Noctua NH-D15 Chromax.Black (Only middle fan) \ Lenowo WN-2
Memory	G.Skill Flare X5 2x16GB DDR5 6000MHZ CL36-36-36-96 AMD EXPO \ Willk Elektronik 2x16GB 2666MHZ CL17
Video Card(s)	Asus GeForce RTX™ 4070 Dual OC GPU: 2325-2355 MEM: 1462\| Nvidia GeForce MX™ 150 2GB GDDR5 Micron
Storage	Gigabyte M30 1TB\|Sabrent Rocket 2TB\| HDD: 10TB\|1TB \ SKHynix 256GB 2242 3x2 \| WD SN700 1TB
Display(s)	LG UltraGear 27GP850-B 1440p@165Hz \| LG 48CX OLED 4K HDR \| AUO 14" 1440p IPS
Case	Asus Prime AP201 White Mesh \| Lenowo T480 chassis
Audio Device(s)	Steelseries Arctis Pro Wireless
Power Supply	Be Quiet! Pure Power 12 M 750W Goldie \| 65W
Mouse	Logitech G305 Lightspeedy Wireless \| Lenowo TouchPad & Logitech G305
Keyboard	Akko 3108 DS Horizon V2 Cream Yellow \| T480 UK Lumi
Software	Win11 Pro 23H2 UK
Benchmark Scores	3DMARK: https://www.3dmark.com/3dm/89434432? GPU-Z: https://www.techpowerup.com/gpuz/details/v3zbr

System Name	Amadeus
Processor	AMD Ryzen 9 5900X
Motherboard	Asus X570-F
Cooling	EK CR360
Memory	32Gb DDR4 @3600MHz
Video Card(s)	RTX 3080 10Gb
Storage	1Tb NVMe, 2Tb NVMe, 2x 2Tb USB HDD
Display(s)	Samsung C32JG50 & HP24y
Case	Lian Li O11 Dynamic
Audio Device(s)	SoundBlaster G6 with Sennheiser Game One
Power Supply	EVGA G2 750W
Mouse	Logitech G603
Keyboard	SteelSeries Apex M500
Software	Windows 11 Pro 64-bit
Benchmark Scores	TimeSpy: 16 201

Processor	Ryzen 7 5800X3D
Motherboard	Asus Crosshair VIII Dark Hero
Cooling	Custom WC
Memory	Crucial Ballistix Sport LT 3200MHz C16 @ 3800MHz C16
Video Card(s)	Sapphire RX 7900 XTX (MBA)
Storage	2x SN770 2TB, 4x 870 EVO 4TB
Display(s)	Asus MG279Q
Case	Be Quiet Dark Base 900 (Mods: Front mesh panel, improved top panel for airflow)
Audio Device(s)	On-board
Power Supply	CoolerMaster V850
Mouse	Logitech G700S
Keyboard	Cherry MX-Board 3.0
Software	Win 10 Pro x64
Benchmark Scores	https://www.3dmark.com/fs/29041947 https://www.3dmark.com/3dm/84973091

Quick UEFI/Legacy question

HarvesterOfSorrow

Shou Miko

P4-630

Shou Miko

HarvesterOfSorrow

gupsterg