im going to buy an HP ENVY Phoenix 810-150se Desktop PC its has windows 8.1 will it run sl

[Rolig Loon]

That's not a bad system, but if I were in the market myself, I would replace that NVidia GT640 with something with a bit more oomph like the GTX650 or maybe a GTX660 Ti if the power supply will handle it.  For a small extra cost, you could get a lot more graphic quality and be in a better position to handle the next wave of viewer upgrades.  Take a look at http://www.tomshardware.com/reviews/geforce-gtx-660-geforce-gtx-650-benchmark,3297.html

[Rolig Loon]

That's not a bad system, but if I were in the market myself, I would replace that NVidia GT640 with something with a bit more oomph like the GTX650 or maybe a GTX660 Ti if the power supply will handle it.  For a small extra cost, you could get a lot more graphic quality and be in a better position to handle the next wave of viewer upgrades.  Take a look at http://www.tomshardware.com/reviews/geforce-gtx-660-geforce-gtx-650-benchmark,3297.html