sapphire RX470 4GB Elpida mining Edition (11256-35)

[alizali]

hi guys
i start this topic specially for only this model of GPU that is mentioned in the title
i have some questions about it
i am happy if you can help me

[alizali]

first of all this kind of card has to switches if you take a close look at your card
these switches make 4 different situation

situation	switch1	switch 2
1	UP	UP
2	UP	DOWN
3	DOWN	DOWN
4	DOWN	UP

this picture explain about it completely

http://uupload.ir/files/w3xx_36eadc54b83a490609740df2789900532c09fef2.jpg

[alizali]

now my first question is why do we have 2 types of timing straps in original bios
some are like 1:XXXX (red in picture) and some others are 2:XXXX(blue in the picture)
http://uupload.ir/files/ayvm_timing.png

is it because of what i explain in above post we have two different timing strap?