After all that time in science class, your physics lessons are about to pay off … sort of.  [H]ard|OCP examines the PPU offerings on the market, from Ageia, ATI and nVIDIA, and tries to explain the difference between the way they implement physics in gaming.
“With all these options available to you, the question is, ‘How do they differ in capability and what will be delivered in terms of gameplay immersion and performance?’ There has been a lot of talk on forums across the Internet regarding ‘effects’ physics and ‘gameplay’ physics. The debate is argued that Ageia’s PhysX card can hardware accelerate effects physics and gameplay physics. It is argued that the PhysX card is favorable over GPUs because GPU physics have only announced effects physics acceleration and not gameplay physics acceleration. This is a debate that a lot of gamers are very confused about and I’ve seen multiple statements based on miss-information regarding the capability of the hardware and software of all three competitors. We hope that this article will clear this debate and offer insight into the two types of physics that exist in games.”

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