I have been looking for good ram for my macbook pro 15 mid 2012 model and I found some really killer prices on crucial. Can I trust this? Also, is there anywhere where I can find cheaper. And what's all this hype about heat sync on the ram? Will I need it? Macbook pros don't have the best of ventilation. And finally, if I do need the ram with a heat sync, do crucial offer that kind of ram?