The Bitfury chip consumption is tunable (like most ASIC manufacturers have promised for their own).
The BitfuryStrikesBack 400GH/s miners use 16x16 = 256 chips, the one in your link only use 5x8 = 40 chips (as far as we can tell from the pictures) to reach 115GH/s. Obviously they aren't configured to use the same frequency, voltage, ...
Buyer say NOT OVERCLOCKED
I assume you mean Seller.
"not overclocked" is probably referring to the default configuration of this particular miner which the seller didn't change. As I tried to explain in my previous post there's no single "maximum" frequency for Bitfury chips it depends on the voltage, converter max amperage, cooling solution, ...
So apples, oranges...