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Not a reference pcb so double check with the maker of said waterblock.
Looks reference to me, and is stamped AMD. It has the reference outputs as well.
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You can link the card from either OcUK or the manufacturers website.
So..what you think guys..Will be possible fit reference waterblock 7970 ..which Im already have home.
Possibly, yes. It sure does look like a reference board but there is no way of confirming whether your block will fit without confirming this with either the manufacturer or someone who has also attempted to watercool the card.
I think it's reference and have fitted an ek block to one.
I had the 950mhz version (11196-10-40G) and it was a 7970 pcb.
To confuse things, the sticker on the box said 900mhz.
The pcb was dark brown and I've seen a black pcb version of the same card too.
Not sure if the blue pcb is the same thing.
Sorry if this doesn't answer your question.
8+6pin *should* mean it's ok. However, if they've changed the pcb colour, they could have changed other things too.