im.thatoneguy
Well-known member
Operating shock tolerance of most SD cards is around 2k Gs. If you experience 2k Gs, the least of your concerns is the survival of the data. 
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Xenophon said:I believe P2 will die much sooner than we expect. Optical media recording could survive for a few years.
Xenophon said:4gb P2 contain $250 worth of Sds and cost $650.
8gb P2 contain $700 worth of SDs and cost more than $2000.
I don't think the 16gb P2 will be cheaper than $5000 since the SDs cost about $2800. We are talking about $10,000 for 30 minutes.
I don't see the "few points in which I'm wrong". I gave some facts on price/performance and speculated about the future. If you think I'm wrong it has to be on facts and not on speculation, I believe. Anyone can speculate and your speculation is as valid as mine. So, is there something wrong with the facts?
ransom said:I thought the SD memory in the P2 cards were more expensive than the standard SD cards you can buy retail because performance specs were tighter?
Jarred Land said:yes.. everyone knows this Ransom, except Xenophon. Xenophon will also have you believe that ECC memory is just the same price as Non-ECC memory, Elvis lives in his basement and that his gramma's Pigs fly 3 times a year.
And I love how in his price comparisons and price drop rates he conveniently skipped right over the fact that the 4gb cards has dropped 70% in price since April.
Way to bring those facts home skippy!
Compare apples to apples, please. A 4gb P2 card is a 4gb device, and is the fastest memory card on the market. If you compare against a fast 4gb card like the SanDisk Extreme III, you'll find that the Extreme III 4gb card carries an MSRP of $599. It's 4gb, it's the fastest compactflash card out there, and it retails at $599. The P2 card is 4gb, it's 4x faster than the Extreme III, and it costs $51 more. Sure doesn't seem overpriced to me.Xenophon said:4gb P2 contain $250 worth of Sds and cost $650.
Xenophon, others are being impatient, and I understand why. I am attempting to be patient, but please, you simply do not have the facts and you are off-base when you make proclamations like this. You're making wild assumptions that are not, in any way, based in fact.Xenophon said:Panasonic want us to believe we are getting something special. It is just a simple controller with 4 sd cards. Any EE can tell by the requirements of the application.
(taken from Spec-Comm's post at http://www.dvxuser.com/V3/showpost.php?p=372184&postcount=31The long answer is, the P2 card is not a simple RAM device but a microcomputer that responds to hundreds of instructions from the camera. We have to address all of those individually, so we have to write software and test each and every one to achieve full functionality.
"any SD cards" is simply not true. There's one, and only one, SD card (that I know of) that has the sustained data rate to support DVCPRO-HD transfer rates, and that's the Extreme III. Even the high-speed Ultra II is too slow, it has a sustained write rate of 10 megabytes per second. DVCPRO-HD (and its audio and associated metadata files) requires something on the order of 14 megabytes per second. Only the Extreme III can handle that; it's rated at 20 megabytes per second. And an Extreme III card by itself costs about the same as a same-capacity P2 card. Keep in mind we have yet to see "street price" on P2 cards -- they may be substantially less than $650.The format needs only 12,5mb/sec. Any sd cards on the market can be used. They are not using 150x or anything. They don't have to.
If you honestly believe this, then I think there's a good entrepreneurial slot for you to leap in and make your own cheap P2 cards. I'll even suggest a name: "CheaP2". If you can produce P2-compatible cards at 1/4 the price of Panasonic's, I would guess that you'd sell a lot. Of course, I think that once you start delving into it you'll find that it's a *lot* more complex than you're thinking, just like Specialized Communications is now discovering.A single good 150x SD card can do DVCPROHD. Those are at your local photographic equipment shop these days. There is nothing special about the sd cards in P2, because nothing needs to be special when you can use 4 cards and engineers do not increase the cost just for kicks.
Actually, they don't even have to do that. If they want to call it a "P2" card, and put the "P2" logo on it, then yes they'd have to comply. But if they just want to engineer some cheap solution that takes a plug-in SD Extreme III card, and they don't call it "P2", they probably don't even need Panasonic's permission at all.johnc said:And I believe anyone that wants to make 3rd party P2 cards are welcome to do it as long as they meet Pany's strict reliability and ruggedness requirements.
Anyone who did that would find a huge fan club among HVX users! :thumbsup:If they do it cheaper than Pany and meet Pany's specs all the better for us.