Same model number non reference cards can have a different BIOSes !!!
I have a couple of Sapphire RX 480 Nitro+OC 8GB , they have 3 different BIOSes as of today 10/2/16
13-2E3470U.X4L / 13-2E3470U.X51 / 113-2E3472U.053 ... Rom files are not interchangeable . You can flash them to another nitro , but then your hashrate will drop to lower 20's or under , or your card going to hash around 4mh/s and you going to get a lot of "GPU ... hangs in OpenCL call " error .
MY xfx non refernce cards ( i have around 20 ) come with 3 different bioses , Rom files are not interchangeable
113-p10xt-ibu1288-W80 , 113-p10xt-ibu1288-W81 , can not recall the 3rd one now
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That link you posted for nitro 8GB OC is for a Nitro 8GB OC with bios 113-2E.3470U.S52 , if you are going to flash that bios to another nitro with different bios number , you can brick your card ... im not saying you will, but there is a chance for that
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