F5: XQD card speeds

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Elevated Visual

Member
Sony XQD 128gb this card is much faster as the specs show downloading compared to the S 64gig with included usb3 reader. Will be more worth the $$s when some one sells a thunderbolt 2 reader. On remote site tonight and will run speed test Monday. Just off loaded both cards and it took about the same for both.
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Elevated Visual said:
Sony XQD 128gb this card is much faster as the specs show downloading compared to the S 64gig with included usb3 reader. Will be more worth the $$s when some one sells a thunderbolt 2 reader. On remote site tonight and will run speed test Monday. Just off loaded both cards and it took about the same for both.
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I don't think I understand what you're saying. 128 G is much faster than the specs, but the 64 S series and 128 G series took the same amount of time? Are you saying that the 128 can download a full card in the same amount of time as the 64?
 
Your findings are different to mine.

With the G-Crads and the new reader I have
offloading speeds up to 350 MB/s which is much faster than
with the S-Cards.
Write speed is surprisingly low at 170 MB/s.

The speed will highly depend on the computer you use and on
the file size as well.

As the G-cards are not more expensive than the S-cards I'm not willing to
make a big thing here. I just bought one 128GB G-card (400€) and I'm
happy even if they're much more expensive than SD-cards that I used
before on my FS100.

Bildschirmfoto 2014-11-22 um 10.03.54.jpg
 
Weirdly I found my 64Gb Sony and my 64Gb Lexar wouldn't show up hen I used the Sony USB3 reader that came with the 128Gb, whereas they all worked on the Lexar reader I have. Macbook Pro on Yosemite.
 
I just went with the 64GB S series because I don't usually offload while on set (so a few minutes saved isn't crucial) and when I'm on the road I'm offloading to USB 3.0 external hard drives that have slow read/write speeds anyway. The cards work for all resolutions/frame rates, and are cheaper per GB than the new G series.
 
Ben Scott said:
Weirdly I found my 64Gb Sony and my 64Gb Lexar wouldn't show up hen I used the Sony USB3 reader that came with the 128Gb, whereas they all worked on the Lexar reader I have. Macbook Pro on Yosemite.
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The G cards only work with the new card reader where all cards work on the old card readers but speed is capped. I think I read this on here in another thread but can't remember where.

I went with the S cards because my retailer didn't have G cards and the S cards were on sale.
 
meauounji said:
I don't think I understand what you're saying. 128 G is much faster than the specs, but the 64 S series and 128 G series took the same amount of time? Are you saying that the 128 can download a full card in the same amount of time as the 64?
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Macbook pro latest off loaded to Quad SSd raid thunderbolt 2 64 card 11 minutes 128 13 minutes. May be the raid perks up performance??
 
I think G cards will mainly be an advantage in 4K to have longer record time without constant switching. Who uses a RED 64 G card? Usually I prefer a 256.
 
Elevated Visual said:
Macbook pro latest off loaded to Quad SSd raid thunderbolt 2 64 card 11 minutes 128 13 minutes. May be the raid perks up performance??
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Well, the quad SSD RAID would certainly remove target drive write speed as a bottle neck, which is what I think most people's limit is gonna be.

Most 7200rpm HDD's write somewhere around 50-120MB/second depending on number of files, file sizes, and other factors, so it would take a four-HDD RAID-0 array to even theoretically equal the XQD G card's advertised 400MB read speed, and only in some situations at that. If you have four SSD's in an array, that's gonna be way more than enough to outpace XQD G cards (depending on the SSD, the individual write speed should be in the neighborhood of 300-500MB/s).

Bus type probably won't matter much, because USB3.0's theoretical max throughput is already 625 MB/s, and obviously, Thunderbolt one has about twice more room than that, so if your drives can write as fast as the XQD cards can read, it should be pulling max speed, which seems to be about what they're advertising, 400MB read, which is about twice the speed of the S series cards. Your findings seem to bear this out within a certain margin of error.
 
I really don't know why we are discussing which card is better and why.
When I asked my dealer he just made the 128GB G-card cheaper per GB
than all the other XQDs including Sony S-type, N-type and the Lexar XQDs.

That's why there was no reason for me to take any of the lower spec cards.
It just doesn't make sense to me.

FYI: I have 350 MB/s offload speed with my iMac with 3GB fusion drive.
No need for RAIDs here.
 
With the Lexars being discontinued I have purchased 2 x 64Gb cards for £100 each. My 128Gb G series cost over £400.
 
The Lexars keep on coming up on ebay for some reason - new and unused. Looks like lots of shops are dumping their stocks of them :)
 
Just read a review on B & H that says the plastic case on the 64gb is flimsy, probably why the card is being discontinued. I will be wrapping mine in a layer of packing tape just for good measure. No other complaints on the review, it's a very fast card.
 
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