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Archive 2012 · 1000X CF vs. 400X SDHC
  
 
M635_Guy
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p.1 #1 · 1000X CF vs. 400X SDHC


So I got my 16GB 1000X Lexar Pro cards, and decided to run a little test vs. my 400X SD cards (both are 16GB).

I used my Kingston USB 2 reader and my Kingston USB 3 reader for each card, and timed the transfer of 2.03GB of JPEG files.

Here were the Results:

400X SD from USB 2.0 Reader: 2:31.8
1000X CD from USB 2.0 Reader: 1:10.7

400X SD from USB 3.0 Reader: 2:05.4
1000X CF from USB 3.0 Reader: 1:09.1

So 1000X is a big benefit vs. the SD card, right? Then I put the 400X SD-card into the built-in reader in my ThinkPad T430s...

It took 59.1 seconds. Ten seconds FASTER than the 1000X card!

After each test, I wiped what I'd copied so the remaining space on the drive was the same.

I'm trying to figure out why, but I thought some here might be interested and have some insight.



Sep 08, 2012 at 10:46 PM
RoyC
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p.1 #2 · 1000X CF vs. 400X SDHC


The 1st thing I would do is get a new USB 3.0 reader as your current one appears to be bad.




Sep 08, 2012 at 11:40 PM
M635_Guy
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p.1 #3 · 1000X CF vs. 400X SDHC


RoyC wrote:
The 1st thing I would do is get a new USB 3.0 reader as your current one appears to be bad.



Why do you say that? If the 1000X speed doesn't saturate the bus of USB 2.0, there's not much reason for improvement on USB 3.0 (the chipset could be responsible for the minor difference).

I've got some folks much more technical than I am that I'll ask. It seems like the reader would work or it wouldn't...



Sep 08, 2012 at 11:48 PM
sjms
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p.1 #4 · 1000X CF vs. 400X SDHC


what bus is your built in reader using, PCIe, USB3 or USB2?

i just recently got a sager notebook (HM77 chipset) and the built in SD reader turned out to be damned fast vs my 4 year old Asus (now defunct) machines reader.








Sep 08, 2012 at 11:57 PM
surf monkey
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p.1 #5 · 1000X CF vs. 400X SDHC


The USB3 standard has throughput at up to 500MB/s, so the cards or the computer should be the limiting factor.

The Lexar 1000x cards should transfer at least at 100MB/s, so 2GB should take around 20 secs.
The 400x cards should transfer at least at 40MB/s, so 2GB should take around 50 secs - which means the built-in SD reader in your laptop is near the max transfer speed.

Edited on Sep 10, 2012 at 01:38 PM · View previous versions



Sep 09, 2012 at 01:28 AM
sjms
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p.1 #6 · 1000X CF vs. 400X SDHC


the built reader on the sager notebook NP9130 using a current sandisk 95MB/s extreme pro SDHC card clocked a consistant 77-80MB/s which is quite impressive. the same card on Lexar USB3 Pro reader on my desktop USB3 port was 72-77MB/s

both transfers were straight drag and drop w/o the use of any intermediary software. the pkg consisted of 63 D7000 14bit raw images with a total weight of 1.34GB

point of reference on the Lexar 1000x CF cards: above the 16GB model (32GB and up) the writes are rated at 145MB/s and the reads 150MB/s. this is based on UDMA7 compliant devices being used. this is pretty much near top end for the CF cards limits.



Sep 09, 2012 at 11:45 AM
M635_Guy
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p.1 #7 · 1000X CF vs. 400X SDHC


The reader is actually a Express card removable module on my ThinkPad T430s.

On the others, I'm aware of the *rated* speed, and I certainly see the value of 1000X vs. 400X on the readers. I'm just a little surprised how close they were on the old USB 2.0 reader vs. new USB 3.0.

Looking at the wikipedia page, USB 2.0 should be capable of 60MB/sec. (theoretically) and USB 3.0 should be 625MB/sec, so it does seem like there should be some difference on the 1000X cards.

I'm also on a pre-production T430s, so maybe I need to update the drivers... I'll do that and report back.



Sep 09, 2012 at 03:13 PM
 

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surf monkey
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p.1 #8 · 1000X CF vs. 400X SDHC


30MB/s for your USB 3 card reader sounds very slow.


Sep 09, 2012 at 03:26 PM
M635_Guy
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p.1 #9 · 1000X CF vs. 400X SDHC


lol - y'all are right. I updated the T430s to the GA-level drivers, and the transfer now takes 11.1 seconds.

Lesson learned: update the drivers!

Now I've got to re-run my tests...



Sep 09, 2012 at 07:20 PM
M635_Guy
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p.1 #10 · 1000X CF vs. 400X SDHC


Updated
1 - 400X SD from USB 3.0 Reader: 51:0
2 - 1000X CF from USB 3.0 Reader: 11:1
3 - 400X SD Internal Reader: 1:02 (Express Card)
4 - 400X SD from USB 2.0 Reader: 2:29.5
5 - 1000X CF from USB 2.0 Reader: 1:09

So the USB 3.0 proves to be significantly faster than USB 2.0 for both.



Sep 09, 2012 at 07:35 PM
surf monkey
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p.1 #11 · 1000X CF vs. 400X SDHC


Wow!

Thanks for posting.



Sep 10, 2012 at 03:56 AM
sjms
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p.1 #12 · 1000X CF vs. 400X SDHC


M635_Guy wrote:
The reader is actually a Express card removable module on my ThinkPad T430s.

On the others, I'm aware of the *rated* speed, and I certainly see the value of 1000X vs. 400X on the readers. I'm just a little surprised how close they were on the old USB 2.0 reader vs. new USB 3.0.

Looking at the wikipedia page, USB 2.0 should be capable of 60MB/sec. (theoretically) and USB 3.0 should be 625MB/sec, so it does seem like there should be some difference on the 1000X cards.

I'm also on a pre-production T430s, so maybe I need to update the drivers...
...Show more

now expresscard uses either PCIe or USB2 for a path that is decided by the maker of the module using the slot.



Sep 10, 2012 at 10:49 AM
Nathan Padgett
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p.1 #13 · 1000X CF vs. 400X SDHC


I just got some 16gb Lexar 1000x CF cards as well and did some tests.

Transferred 2.23 GB of RAW images

Using the Lexar USB 3 reader attached to a USB 3 Rosewill PCIe card:

1. Lexar 16gb 1000x - 21 seconds! - 100.6 mb/s
2. Lexar 16gb 1000x (before updating Lexar USB 3 reader UDMA 7 firmware)- 45 seconds - 49.7 mb/s
3. Sandisk 16GB Ultra 30 mb/s - 1:27 - .26 mb/s
4. Sandisk 16GB Ultra 30 mb/s (using USB 2)- 1:43 - 22mb/s

Copying the same 2.23gb to Lexar 1000x from PC took 45 seconds (49.7 mb/s)both before and after the firmware update.





Sep 13, 2012 at 04:17 AM





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