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Comment: Re:Cell (Score 1) 338

That core was basically the Intel Atom of PowerPC architectures.

I agree with all of your sentiment, and most of your statements, but this one I have trouble with. Atom is basically an original Pentium, slightly modernized. To get that out of PowerPC, you'd need to start with a 603 or so, and bring it into a 2005 age. 603 migrated to 750 and 7400. But since the 7400 was essentially a 750 with a vector unit taped to the side, the 750 would suffice as an Atom-esque core. The die size of the 750 class machines in 90nm supports this.

The PowerPC core in the PS3 and 360 was derived from Power4, a server class processor, with bunches of stuff taken out and re-pipelined. The core was made in-order, the pipeline was brought down to allow the frequency to be amped up. The area of the PowerPC core in the Cell is about the same as the entire die (core and cache) of a 750 in the same 90nm technology.

Comment: Re:Honestly, rifles are not the problem (Score 4, Insightful) 651

by chrysrobyn (#48038467) Attached to: The $1,200 DIY Gunsmithing Machine

Pistols are also the best self-defence weapon

Dogs are the best self-defence weapon. Their barking scares away countless intruders. They're armed even when you're not home. THEY GO AROUND CORNERS. They can be recalled, do not kill instantly, and can quickly recognize friends by smell.

20 years ago, my dad and I came home from a camping trip a day early, but late at night. If my mom had been armed, she would have shot at both of us. Instead, the dog woofed to wake her up and then went to go greet us.

Comment: Re:Hash Collision (Score 1) 790

by volpe (#47601759) Attached to: Google Spots Explicit Images of a Child In Man's Email, Tips Off Police

There are less than 2^33 people in the world. Most of them probablly don't use google but lets assume that they do. Further lets make a wild ass guess that each one has 2^17 files in googles database (from some googling i'm pretty sure this is an overestimate). That would mean a total of 2^40 files.

Check your arithmetic.

Comment: A *single* photon? (Score 1) 347

by volpe (#47316131) Attached to: Evidence of a Correction To the Speed of Light

Can a single photon turn into an electron/positron pair? I didn't think this was possible because a photon has no rest frame, whereas an e-/p+ pair always would. Thus, in the inertial frame in which the pair has no momentum (the "center of momentum" frame), the photon would still have momentum. Thus, momentum would not be conserved. You need two photons moving in different directions for the pair of photons to have a center-of-momentum frame in which their momenta cancel each other out.

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