Not in the UK it isn't. I paid £399 for my "Zotac" 1070 FE at overclockers. The AMP extreme is listed at £420.
The FE card is already huge and barely fits in my NZXT H440 case, the AMP wouldn't fit at all.
My card boosts to around 2050 MHz, no different from the AMP Extreme, as the AIB cards aren't using binned chips yet. Also good luck trying to find a waterblock for that monster
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