20070427, 23:27  #1 
"Jason Goatcher"
Mar 2005
3×7×167 Posts 
When will HD and flash drive prices converge?
I'm attempting to figure out approximately when hard drive and flash drive prices will converge. I'm putting this in the Hardware section because I'm convinced that people will be interested in the answer, even if they're not interested in the mathematics.
Here are the facts we're dealing with: flash drive space costs approximately 5 times as much as hard drive space. hard drive space costs approximately half as much every 12 months. flash drive space costs approximately half as much every 9 months. So, assuming these are absolutes, even though we know they're just heuristics, when do they converge? 
20070427, 23:54  #2 
"Richard B. Woods"
Aug 2002
Wisconsin USA
2^{2}×3×641 Posts 
Solve
5 * 2^{M/9} = 2^{M/12} where M = number of months from now 
20070428, 00:14  #3 
Account Deleted
"Tim Sorbera"
Aug 2006
San Antonio, TX USA
11×389 Posts 
I ran it on my calculator, and, assuming the numbers jasong provided are perfect and constant, it will be ~83.59 months from now. That's ~12 days under 7 years, which means it will be on April 15th, 2014 that their prices converge.

20070430, 04:12  #4 
Jul 2004
Nowhere
809_{10} Posts 
wouldn't you need to factor in the fact that new mfg methods and different technologies that would reduce the cost of production of flash drives and replacement of hard drives with something else causing there prices to go up.

20070430, 06:45  #5  
"Richard B. Woods"
Aug 2002
Wisconsin USA
2^{2}·3·641 Posts 
Quote:
With what jasong gave (which may already include the factors you mention), it's ~7 years. Besides, it's only an estimate either way. Last fiddled with by cheesehead on 20070430 at 06:47 

20071221, 16:54  #6 
∂^{2}ω=0
Sep 2002
Repรบblica de California
5×2,351 Posts 
Apple to Unveil a FlashBook?

20071221, 17:43  #7 
Just call me Henry
"David"
Sep 2007
Liverpool (GMT/BST)
37×163 Posts 
elementary algebra

20071221, 20:10  #8 
∂^{2}ω=0
Sep 2002
Repรบblica de California
5·2,351 Posts 

20071221, 20:53  #9 
Bamboozled!
"๐บ๐๐ท๐ท๐ญ"
May 2003
Down not across
2D7E_{16} Posts 

20071222, 09:30  #10 
Jan 2005
479 Posts 
I'd say the answer is 42

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