CAUTION: Number of CHIP by Side (4 or 8) with the same product Number !!! Bug with 4 chips !!!

Ordered a double game identical RAM (4GB x 2) to replace Samsung 4GB HP DV7-4180sf
Well received 2 bars, even Product Number, but opening the packages, a RAM card with 8 chips per side,
the other with 4 chips (large rectangles) per side, unable to see without unpacking, hidden by label over the entire surface
The one with 8 works with Samsung chips already in place and continues to work well, but no startup of Win 7 and I put the map of 4 chips with 8 chips (Samsung or Corsair)
The only clue: There is a different code + on each label and packaging, but could not know without trying them:
=> The one that works 8 chips = 133504419 => Bug which chips with 4 = 134701134
I keep it on hand for another upcoming laptop computer if it works
Kingston and Samsung commissioned x 2 (8 chips on their photo) for the rest of my operations