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CH VII & 3900X high vcore in BIOS

wolfgang91
Level 7
Hi, I've just bought a 3900X and a Crosshair VII Hero WiFi. Just turn it on for the first time and the vcore in BIOS is always 1,4-1,47 v. All is set to auto, just default settings. Is It normal?
Thanks in advance.
Ryzen 3900X - CHVII BIOS 3004 - 32 gb G.Skill Trident Z Neo (2x16 gb) @3733 - Corsair H115i Pro - EVGA Supernova 850G2 - Nvme ADATA SX 8200 Pro - Several SSDs & HDDs - GTX 760
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5 REPLIES 5

xeizo
Level 12
Yes, it is normal. Don't bother, it's more interesting what happens in Windows!
R9 7950X - ASUS X670E Crosshair Extreme (bios 0803) - 32GB HyperX Fury Beast @6200c32 - Corsair H150i Pro - ASUS RTX3080 TUF OC V2 - Phanteks P400A - Corsair RM850 - WD SN850

wolfgang91
Level 7
Ok, thank you very much! I'll enjoy It in Windows then! 😉
Ryzen 3900X - CHVII BIOS 3004 - 32 gb G.Skill Trident Z Neo (2x16 gb) @3733 - Corsair H115i Pro - EVGA Supernova 850G2 - Nvme ADATA SX 8200 Pro - Several SSDs & HDDs - GTX 760

gupsterg
Level 13
Short answer as xeizo said 😉 .

Long answer 🙂 , the CPU will not idle in UEFI the same as it does in OS. If you had a wall plug meter, you'd see complete system could be pulling ~120W, where as idle in OS is ~60W.

UEFI is a mini OS, CPU boosts in UEFI, so you see voltages for that context. In my opinion Ryzen FW/UEFI is not optimised for that case, so just ignore, use the UEFI to set settings, not for sitting in and watching 😄 ...
Intel Defector :eek: AMD Rebel


R9 5900X - Custom WC - ASUS Crosshair VII Hero WiFi - Ballistix Sport LT 2x16GB 3800MHz C16 - RX 6800 XT - WD SN770 2TB - 2x 870 EVO 4TB


24/7 OC: i5 4690K @ 4.9GHz CPU@1.255v 4.4GHz Cache@1.10v - Archon SB-E X2 - Asus Maximus VII Ranger
Sapphire Fury X (1145/545 ~17.7K GS 3DM FS)

:eek: CPU Validation 5.198GHz@1.314v with 4.4GHz cache + RAM 2400MHz@1T :eek:
Da Music video

Its an ASUS thing. I have crosshair Viii hero wifi and second ssystem with asrock x570 pro4.

On asrock idle voltages are miles better than asus in windows. I guess pushing things too much is an asus thing. Asus board will idle in 1.4v mostly, yes it does dip to sub 1v but lot less than asrock board. My averages are always 1.4v. I am talking identical setup other than the CPU 3600 vs 3900x in the Asus setup. But still my asrock averages in 1.0**** volts in idle vs asus 1.4v volts average in windows. They both have ABB version of bios. I think ASUS quality in bios has gone to ****. Voltages are all over the place. I have the same drivers, same version of windows and same amount of ram.

Yes under load asus voltages will go down but idle is a whole different beast.

gupsterg
Level 13
I'll just leave these here...

81781

81782
Intel Defector :eek: AMD Rebel


R9 5900X - Custom WC - ASUS Crosshair VII Hero WiFi - Ballistix Sport LT 2x16GB 3800MHz C16 - RX 6800 XT - WD SN770 2TB - 2x 870 EVO 4TB


24/7 OC: i5 4690K @ 4.9GHz CPU@1.255v 4.4GHz Cache@1.10v - Archon SB-E X2 - Asus Maximus VII Ranger
Sapphire Fury X (1145/545 ~17.7K GS 3DM FS)

:eek: CPU Validation 5.198GHz@1.314v with 4.4GHz cache + RAM 2400MHz@1T :eek:
Da Music video