Asus p8z77-v Deluxe 8 GPU mining MODIFIED BIOS

I got to work 2x Rtx 3090, 3x Rtx 3080, 1x Rtx 3070ti, 1x Rtx2080, Rx. 5700 xt to mine on the Asus p8z77-v Deluxe mainboard. And thought to share with you how.

To get that to work I modified the Bios and flashed the new Bios to the motherboard (*****with USB Flashback) and allowed following settings to be set:

Above 4g decoding

PCI Latency Timer

Linkspeed for every PCIE slot

Onboard devices USB Controllers etc (Enable / Disable)


To get 8 GPUs working I used a Pcie1x 1 to 4 splitter.

And used following settings:

Above 4g Decoding: Enabled

PCI Latency Timer: 64 PCI Bus Clock

ALL PCIE slots set to Gen1

IGPU Multi Monitor: Disabled

Onboard devices:

Bluetooth Controller: Disabled

Wifi Controller: Disabled

Realtek Lan Controller: Disabled

Asmedia USB3.0 Controller (USB3_E34): Disabled

Intel Lan Controller: Enabled (make sure you plug in your Lan cable in to the Intel Lan Port)


Plugged the GPU risers as follows:

PCIEX1_1: Riser

PCIEX16_1: 1to4 PCIE Splitter (used the GPU on slot 1 of the splitter as Display output)

PCIEX1_2: NOTHING**

PCIEX1_3: Riser

PCIEX16_2: Riser

PCIEX1_4: Riser

PCIEX16_3: Riser

*****its important to flash the moded Bios with the USB Flashback Method, otherwise it wont let you update your Bios because it's a non official Bios no verification.

**(Will not function. Does not recogize GPU)

Modified Bios: (Make sure you have the same Motherboard: Asus P8Z77-V Deluxe*)*