2 different V-bios

r8er4ever

Reputable
Sep 1, 2014
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4,510
I have a XFX Radeon HD6850 and was given a second one also a XFX HD6850. 1 has 2-6pin pci-e plugs and the other only a single 6pin plug, and one is a little shorter.
What I am wondering is that one runs at 1.15V with certain fan speeds presets and clock presets and the 2nd card runs at 0.950V with its own clock and fan presets.
So I am guessing the bios are different causing this.
So should I re flash them to the same version bios if I am going to continue running them in crossfire?
My system is a older pieced together one(but hey it works)
Corsair TX750 PSU
Asrock 870 Extreeme3 MOBO
Phenom II x4 955 CPU
8GB Corsair Vengeance DDR3
and now 2 6850 video cards

Here is what I am asking, if you look at the bios they have different values. Should I re-flash the bios so they are the same values(clk spds,volts,ect)?