41.9MH/s with an XFX RX 580 mining ETH - 11 GPU Mining Rig

This is my 11 RX580 mining rig, currently mining Ethereum at about ~330MH/s +/-10.
I was just finishing moving this rig from Windows to SimpleMining OS and noticed the GPU9 which is an XFX GTR-S was getting 41.8MH/s.
I have 3 XFX GTR-S and all have the same BIOS Mod, but only one is giving the 41.8MH/s , the rest of two give 30MH/s.

BIOS Mod for GTR - the one who did 41.9MH/s http://expectcrypto.com/bios-mods/GTR31mh-solo-108w.rom

BIO Mod for GTS
http://expectcrypto.com/bios-mods/Xfx-RX-580P8DFD6-Mod%2030solo%2026dual.rom

Parts used for this rig:

Motherboard
ASUS B250 MINING EXPERT - http://amzn.to/2mbv9li

CPU
Intel Core i3-7100 7th Gen,3.90 GHz - http://amzn.to/2qGOFve

DDR4 RAM
Corsair Vengeance LPX 16GB (2x8GB) - http://amzn.to/2qJaNFv

Any 32GB+ USB stick for SimpleMining OS - http://amzn.to/2CWxUSN

GPUs
9 x XFX GTS XXX Edition RX 580 8GB - http://amzn.to/2CLq1Lx
RX-580P8DFD6

3 x XFX GTR-S RX 580 8GB - http://amzn.to/2CLqwVV
RX-580R8DBR6
POWER SUPPLY & ACCESSORIES
A minimum PSUs of 1750w
I used to use 1 x 750w - http://amzn.to/2Detsvp and 1x 1200w - http://amzn.to/2CVCGzD and it worked fine.

I switched for the 2400w because I was having it laying around and I installed it to reduce the load on those two PSUs.

2x Breakout Boards - http://amzn.to/2DfH3Tm

11x Y PCIe Splitter cables - http://amzn.to/2Fjx7Zp
15x PCIe cables - http://amzn.to/2CTWSkW
1x ATX Power supply Module - http://amzn.to/2mbQECy and 1x 6PIN to DC 12v to power the ATX PSU Module. - http://amzn.to/2AKjmzE
I keep my crypto safe with Ledger Nano S: https://goo.gl/65KJb2

I use Binance to Buy/Sell/Trade crypto: https://goo.gl/MCLy6R
If this video helped you, please donate:

BTC 1Btqoc6SfuiEiBnZ8BDze6s5vb2EWouZw

ETH 0xeb6ced4b1535930975a565f2ef3e2f885d6adfb5

ZCash t1bcnhP51KAYxPQ8wPhDzqAxSQA4SY26ztW

Cardano/ADA DdzFFzCqrhsyUWefNyCGMv1Y9KggiGJWY9ShFZho7KPJsiPZAzUx7mfn211tFDUziGF2GWWfhFaZHHfn34AmSpYTTag1HnJDdYvhX2Ru

ETC 0xeb6ced4b1535930975a565f2ef3e2f885d6adfb5
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Видео 41.9MH/s with an XFX RX 580 mining ETH - 11 GPU Mining Rig канала Expect Crypto