So I'm building a new system, at the moment I have a Nvidia 240 SFX But I'm gonna buy a 6GTX 680 graphics card.... Can I put the 240 SFX in Physx and Use the 680 at a standard/ better elvel? If so, How can I put the 240 in Physx (my first full build)
Im Gonna Have
Motherboard : Asus Rampage IV Extreme (2011 Socket)
You will need an aftermarket air cooler like he noctua Ndh14 if you are planning to overclock an i7. You can use a secondary Nvidia card for PhysX, however, it will not yield a huge performance boost. Linus Tech Tips did an episode on this on youtube an it will help, but not by much.
Right now Physx is really just marketing. There are not many games that really take advantage of it. But if you have the card already, why not try it. You will need a cooler anyway as the x79 cpus don't come with one.
I play games with Physx It is something nice in games that offer it i.e., (Batman AA,AC, and Borderlands 2) Just to name a few of the modern titles. I truly feel that with a 680 you will be more then fine with physx and will have zero need to add an additional card for physx rendering I'll provide a benchmark from my 670 running batman AC with physx on high reason why because its one of the more intense games on your computer.
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Well for Kepler era cards taking the physx load onto something else helps to save resources that are already very limited so a dedicated card will indeed help. Physx doesn't need that much compute power to need anything more than a 8800gt or a gts450 so your GT240 is enough.
I Hate that video and it isn't accurate, only retards try to use such weak cards for physx. That 8600GTS is slower than a GT520 for crying out loud and a GT240 as well a GT430 is a Lot faster for dedicated physx. The GT240 at idle doesn't use much power neither does it at full load. As for the 8800gt I have used mine as a dedicated card several times and the power consumption isn't a problem. I am willing to bet that you have never tried this out for yourself.
I had a 560Ti Sli setup and just for fun I took off the sli bridge and used the 2nd 560ti as a dedicated physx card. My performance increase in AC wasn't much higher maybe a few frames then me using two 560's in sli. A 240 is a budget card not sure how it would pan out as a dedicated card its more of a here are video outputs and maybe I'll watch some HD content card. I mean sure go ahead and use a 240 as your physx card I just don't think its worth it most games don't use physx and those that do will be just fine with the 680 as its a beast card and will eat games for breakfeast that need physx.