Yes, it's compatible. But as mentioned by BadActor, you need to make sure the case will accomodate the length of the card, which it should as that card is designed to be used with OEM systems, and more importantly, that you have a PSU that is capable and reliable enough for use with an aftermarket card. That shouldn't be an issue either really since the GTX 950 only calls for a 380w PSU but there are some pretty terrible power supplies that come in prebuilt systems.