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Strix 4090 question about solid power light being on.

ExcessiveGBH
Level 8
Saw a reviewer on Youtube (4.10) Overclocked Asus Strix RTX 4090 Review w/ 5300 mhz i9 12900KS OC - YouTube @ 4.13 he mentions his power light was a solid on and said this was normal.

Does anyone know if this is correct.
System specs
Win 11 Pro 21H2
Rampage VI Extreme
BIOS 3801
I9 10920 @5.0GHz all cores
EK-KIT G360 (CPU only)
Samsung 960 PRO M.2 NVMe 1TB
Samsung 970 EVO M.2 PLUS NVMe 2TB
Kingston Fury Renegade 4TB PCIe 4.0 NVMe M.2 SSD with Heatsink
1 Samsung SSD 4TB EVO
1 X Samsung SSD 860 EVO 4TB
2 x 10TB drives
1 x 2TB drive
ASUS ROG Strix GeForce RTX 4090 OC 24GB @3015 MHz
32GB G Skill Trident Z 3466MHz 15-17-17-37
Corsair AX1200W PSU
Sound Denon AVC-A1
LGC1 77
940 Views
18 REPLIES 18

@Silent Scone@ROG

I dont have that power detect toggle in GPU tweak 3. Using latest version. I have a 4090 Tuf OC. Is it only available for the Strix? I also have the Red led light when computer is off.

For me Gpu tweak 3 only show 0Db fan and OSD

Silent Scone@ROG wrote:
Hello, install GPU Tweak III and disable Power Detect. The LED being lit when the system is off is normal.



I dont have that power detect toggle in GPU tweak 3. Using latest version. I have a 4090 Tuf OC. Is it only available for the Strix? I also have the Red led light when computer is off.

For me Gpu tweak 3 only show 0Db fan and OSD

Fear4u2envy
Level 7
im having an issue, my 4090 founders card is blinking red on the card, i thought it was because my power supply wasn't enough so i went and purchased a 1600 watt power supply and it is still blinking red. i cant find any info whatsoever on this problem.
Thank You
S. Pow

Fear4u2envy wrote:
im having an issue, my 4090 founders card is blinking red on the card, i thought it was because my power supply wasn't enough so i went and purchased a 1600 watt power supply and it is still blinking red. i cant find any info whatsoever on this problem.


Is it blinking when PC is turned off or on?
Do performance heavy games crash?
Use GPUz and see what voltages you are getting.
System specs
Win 11 Pro 21H2
Rampage VI Extreme
BIOS 3801
I9 10920 @5.0GHz all cores
EK-KIT G360 (CPU only)
Samsung 960 PRO M.2 NVMe 1TB
Samsung 970 EVO M.2 PLUS NVMe 2TB
Kingston Fury Renegade 4TB PCIe 4.0 NVMe M.2 SSD with Heatsink
1 Samsung SSD 4TB EVO
1 X Samsung SSD 860 EVO 4TB
2 x 10TB drives
1 x 2TB drive
ASUS ROG Strix GeForce RTX 4090 OC 24GB @3015 MHz
32GB G Skill Trident Z 3466MHz 15-17-17-37
Corsair AX1200W PSU
Sound Denon AVC-A1
LGC1 77

scryed
Level 9
hi, i have a follow up question on the subject, i know that the red light is not a problem when the card is off

i have now exchanged the original adapter cable for the one from seasonic which i received on request now the light is off even when it is switched off

I think it has something to do with the fact that the two pcie plugs on the power supply side are not fully equipped and therefore no longer send a "signal / residual current" to the graphics card when the pc is switched off

Does someone have the same assumption ?

Hello, I know it has been a while since this thread but, i'm having the exact same behaviour today with my 4070 after i changed the adapter for the corsair 12vhpwr cable. Have you found any answers about this or had any problems with your card after the change? 

Hi, I too just put the corsair 12vhpwr adapter on my strix 4090 and I can confirm that the gpu power led stays off even when the pc is off. However, I noticed that when I shut down the system from windows, when the psu cuts the power, the led on the gpu flashes 4 times then goes off. Does this happen to you too? I am attaching a video for you to understand. Can you tell me if this happens to you too?

Hey man, sorry for the late reply. Mine just stays off, doesn't flash like yours, but i guess it's nothing to be scared of. 

hello, so when you turn off the pc, when the power supply cuts off the current to the motherboard, your led doesn't flash? I really hope it's not a serious problem, also because when using the PC (benchmark and game) it always stays off. off even when the PC is off. I think it's the residual current that remains in the pci express port...and the led flashes and then goes off...do you think it's serious?