I have a 10/100 card that is working. Will I notice a difference if I replace it with a 10/100/1000 card? The new card is PCI-Express 1, (TP-LINK TG-3468) while the old card is PCI . The motherboard has both available. The computer is a HP-Compaq I-3 6200 Pro with the on-board ethernet port that is not working. Internet is Time-Warner cable, not the slowest or fastest.available. Thanks