>I've been watching the XQD and CF cards for a while. > >I have the 16 GIG Sony Series H XQD card that came with the >D4, plus a second 32 GIG Series H card. B&H lists them >with read/write speeds of 125 MB/s. Currently, the 32 gig card >is $168.28. > >B&H has 32 gig Lexar 1000x CF (145 MB/s) in Pairs for >$249.95 ($125 ea) on sale until Jan 31. > >The new Sony 32 Gig Series S XQD card is $258.95 with a speed >of 168 MB/s. It is a little faster than the Lexar 1000x, but >more than twice the cost. > >I just purchased a D800, so adding a pair of 32 gig 1000x CF >cards that can be used in either body was a relatively easy >choice. My previous fastest CF card was a 600x (90 MB/s)that >had been in the second slot of the D4. Now, I will select the >1000x CF card as the first one and the 32 gig XQD card in the >second slot.
I still think the whole need of fast cards is a bit overblown. It has an impact, but not a large one. I'm doing much the same - using CF cards, but using them at a slower speed and bigger.
For those interested, here are comparisons I just made.
Lossless compressed, 14 bit, time to buffer full (first slow shot, counting the first slow shot):
This compares to Ron Galbraith's numbers of 90MB/s and 61MB/s.
The I/O system is still the real limiting factor. You do get more speed out of increasingly faster cards (and XQD vs. CF), but it's not much performance for quite a lot more money as you get over about 60MB/s in card speed.
But Thank you Nikon for a very nice, large buffer. That's the saving grace.