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bazza2764
26th March 2011, 09:04 PM
Hi All,
I am thinking of buying a new memory card (4GB) i would like one around the x300 speed, Asda are selling one that writes at 30mbs a sec and reads at the same speed, but i don't know how to convert that to speed? as in x300? or x133? anyone know of a table of a way of calculating it?.
I have seen the one on 7day shop for 13.49 http://e-group.uk.net/forum/showthread.php?t=13292 any help ? *chr

Melaka
27th March 2011, 08:26 AM
Dunno, but why do you want such a high speed? I use Sandisk Extreme III CF cards and their Ultra 15mbs SD cards and have never had a problem with write speed.

rsh1960
27th March 2011, 08:54 AM
Why don't you try these?

http://www.7dayshop.com/catalog/product_info.php?cPath=777_6&products_id=110827

Double the space for a pound more.

Using two of the 4GB ones

jamie allan
27th March 2011, 09:00 AM
Hi All,
I am thinking of buying a new memory card (4GB) i would like one around the x300 speed, Asda are selling one that writes at 30mbs a sec and reads at the same speed, but i don't know how to convert that to speed? as in x300? or x133? anyone know of a table of a way of calculating it?.
I have seen the one on 7day shop for 13.49 http://e-group.uk.net/forum/showthread.php?t=13292 any help ? *chr
The number quoted (say 300) - as opposed to the actual speed (say 30MB/s) is actually simply a multiplier. It goes back to the old days of CDRoms where they initially could only transfer data at 150kB/s. So a card which states 300 actually runs at 300 X 150k(or 0.15M) = 45MB/s.

So :

133 = 20MB/s roughly speaking
200 = 30MB/s
233 = 35MB/s
300 = 45MB/s

bazza2764
27th March 2011, 09:56 AM
Dunno, but why do you want such a high speed? I use Sandisk Extreme III CF cards and their Ultra 15mbs SD cards and have never had a problem with write speed.
maybe im getting mixed up, my e420 maybe isn't capable of writing to the card as fast as i want, i do 6 dance shows a year, and when in burst mode it slows down, i thought it might be the write speed of the card but its probably the camera... looking at the card i currently have its a Kingston Compact Flash Elite Pro 133X . thanks for your help

bazza2764
27th March 2011, 09:57 AM
The number quoted (say 300) - as opposed to the actual speed (say 30MB/s) is actually simply a multiplier. It goes back to the old days of CDRoms where they initially could only transfer data at 150kB/s. So a card which states 300 actually runs at 300 X 150k(or 0.15M) = 45MB/s.

So :

133 = 20MB/s roughly speaking
200 = 30MB/s
233 = 35MB/s
300 = 45MB/s
Thanks that helps, as i say i think it maybe the write speed buffer of the camera being an E420, maybe i should have looked at that first :o

buddha01
2nd February 2012, 06:48 PM
Hi Barry,
Seems you asked this question also at Olympus user, right? So no need to repeat my answer here, I think.;)
Like i told at Olympus User, I use an ADATA 32GB CF533X card in my E-420 and never had any problem what so ever with it. So you can can use a fast card in your E-420.
Greetz,

P.s. But why would you buy a expencive Sandisk CF card if you can go for a cheaper, faster and better ADATA CF card instead which comes with a lifetime warranty? I got also a personal insurance that it will work properly and fast from the European CEO of ADATA himself.:eek: ;)

Ian
3rd February 2012, 09:07 AM
300x CF cards are only beneficial if your camera supports UDMA and only the E-3, E-30 and E-5 do. Although you will get the benefit of faster downloading from the card if you use a UDMA card reader, but this needs to be connected to a suitably fast interface port: FireWire II or USB 3.

Ian

buddha01
4th February 2012, 08:28 AM
Hi Ian,

Believe me, don't know why but 300x and 533x cards do work properly at the e-420. Working myself with the ADATA 32GB 533X now for more then a year and it is really fast and never had any problems with it. Although the e-420 doesn't support UDMA, you can notice the speed difference when taking photos compared with other makes that are more expensive while the photos are written onto the card.

Ian
4th February 2012, 04:45 PM
Hi Ian,

Believe me, don't know why but 300x and 533x cards do work properly at the e-420. Working myself with the ADATA 32GB 533X now for more then a year and it is really fast and never had any problems with it. Although the e-420 doesn't support UDMA, you can notice the speed difference when taking photos compared with other makes that are more expensive while the photos are written onto the card.

As long as you have the latest firmware (some models with older firmware did not work properly with UDMA cards) there should be no problem using UDMA cards, but you won't see any benefit over a standard 133x card in any E-System DSLR apart from the E-3, E-30 and E-5. The only benefit will be in getting your pictures off the card faster if you have a UDMA-compatible card reader connected to a fast port (Firewire II or USB3).

Ian