Galaxy's GTX 770 GC 4GB doubles up on the reference card's memory while also utilizing higher clock speeds. It also happens to be one of the most expensive GTX 770 cards on the market but does the additional GDDR5 actually make a difference?
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips