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Old 21 June 2012, 22:21   #1
SuperNashwan
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CF vs SD as HDD

I just wondered what are the pros and cons of using CF cards compared to SD cards as internal HDDs on an A1200.

I've set up both and they both seem to work fine. Reading around suggests CF cards are way more popular but SD cards are significantly cheaper. I haven't done any speed tests so maybe there is a difference there?
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Old 22 June 2012, 00:11   #2
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i think the question is because cf cards have chips that are heavy duty and sd cards more like light use cards dealing bad with heat.
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Old 22 June 2012, 00:25   #3
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Is'nt CF's naturally IDE compliant as apposed to sd which require a reader to convert it to IDE standard and therefore generally less compatible.
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Old 22 June 2012, 00:41   #4
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I have had fantastic results using 16GB and 32GB SDHC Class 10 cards in an A1200 with a simple $10 IDE to SD adapter.

Benchmark wise it benchs maybe 15 to 20% slower than CF, but most likely thats a result of the IDE to SD adapter and not the card as these were Class 10 cards capable of over 10 megabytes a sec write speed and faster read speeds. This is using the regular onboard A1200 ide.
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Old 22 June 2012, 01:34   #5
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Quote:
Originally Posted by FOL View Post
Isn't CF's naturally IDE compliant as apposed to sd which require a reader to convert it to IDE standard and therefore generally less compatible.
I prefer SD cards. It is true that SD cards are not IDE devices, so the SD-IDE adapter needs to do that part of the job.
But once you have an adapter that works, you don't need to worry about an incompatible card like you do with CF cards. (so in my opinion SD cards are more compatible, not less)
I tested around 15 SD cards of more than 10 different brands and they all worked well on this £6 adapter.

Edit:
Speed was a bigger factor years ago when SD cards were slower, but shouldn't be any more. Didn't measure myself though - guess Thgill is right.

By the way - be careful with PCMCIA-SD adapters, as many are either 32bit PC-card, or do not support SDHC.

Last edited by fgh; 22 June 2012 at 01:45.
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Old 22 June 2012, 04:57   #6
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I posted a thread over at Amibay a year or so ago with my experiences using SDHC cards as IDE replacements with some basic benchmarks. The adapter I used was more or less the same as the one fgh linked to.

If memory serves me correctly, using Sysinfo on my 030 A1200, I would see around 2 megabytes a sec with a CF card where as with the SDHC card and adapter it was roughly 1.8 megs a sec.


Plus none of the CF compatibility issues some people report...especially with ACA accelerators.


Ahhh...here is a webcache of my post on Amibay:

http://webcache.googleusercontent.co...&ct=clnk&gl=us



Lots of good info in that thread. I would love to use the same adapter and card on an A1200 that has something like one of the Fast ATA interfaces.
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Old 22 June 2012, 08:10   #7
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The only bumper on this road is the SD>IDE adaptor. I have one bought from china that is DOA.

Didn't bother with a refund from Deal Extreme, simply ordered another one, which in turn got caught by Brazilian customs and never delivered to me...
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Old 22 June 2012, 09:51   #8
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Thanks for the link. I have just ordered 3 of them and will install them when they arrive. Just gotta be better than all the compact flash card incompatibility crap! Cheaper cards too.


Quote:
Originally Posted by fgh View Post
I prefer SD cards. It is true that SD cards are not IDE devices, so the SD-IDE adapter needs to do that part of the job.
But once you have an adapter that works, you don't need to worry about an incompatible card like you do with CF cards. (so in my opinion SD cards are more compatible, not less)
I tested around 15 SD cards of more than 10 different brands and they all worked well on this £6 adapter.

Edit:
Speed was a bigger factor years ago when SD cards were slower, but shouldn't be any more. Didn't measure myself though - guess Thgill is right.

By the way - be careful with PCMCIA-SD adapters, as many are either 32bit PC-card, or do not support SDHC.
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Old 22 June 2012, 10:22   #9
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well actually i am having issues under winuae formating the cards always message like partitions on unit 0 or sector 0 even with disableharddrivesafetycheck and on my desktop computer with vista occurs error reading the card units saying abort retry ,they are all crazy.
even with execute as administrator rights
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Old 22 June 2012, 10:36   #10
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Quote:
Originally Posted by rampartsagain View Post
well actually i am having issues under winuae formating the cards always message like partitions on unit 0 or sector 0 even with disableharddrivesafetycheck and on my desktop computer with vista occurs error reading the card units saying abort retry ,they are all crazy.
even with execute as administrator rights
Can it be that there are windows-partitions (MBR-partitions) on your card?
If you are using a somewhat recent version of WinUAE the disableharddrivesafetycheck parameter is gone and you need to remove all windows partitions on the card for WinUAE to allow writes to it.

You can use the diskpart 'clean' command under Vista or Win 7.
The Win XP version of diskpart cannot access removable media, but you can use free tools like Easeus Partition Master or similar.
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Old 22 June 2012, 11:17   #11
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CF is more close to IDE HDD protocol ,no need extra controller chip to emulate the IDE (on board adapter),so is more compatible and stable for long time.. prefer type I,and SANDISK..
I haven testing both..
I vote to CF.

Last edited by Anemos; 22 June 2012 at 11:25.
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Old 23 June 2012, 00:23   #12
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Don't use a SD card in USB readers, it will go crazy and all sorts of behaviours are expected.

Use the IDE adaptor you have and hook the card directly to the motherboard IDE header or use an external HD interface with the SD adaptor. This way it will work perfectly as intended.
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Old 25 June 2012, 22:13   #13
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Quote:
Originally Posted by rkauer View Post
Don't use a SD card in USB readers, it will go crazy and all sorts of behaviours are expected.

Use the IDE adaptor you have and hook the card directly to the motherboard IDE header or use an external HD interface with the SD adaptor. This way it will work perfectly as intended.
That's new to me, been accessing plenty of SD cards over USB on my PC so far. Some information would be useful, for instance examples of the crazy behaviour, and a bit of background perhaps?
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Old 25 June 2012, 23:29   #14
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I suspect (or guess) that SD's will replace CF cards in time. I haven't owned CF camera in years, most seem to be SD cards now. Not unless CF's are used for something else, which I don't know about.
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Old 28 June 2012, 01:25   #15
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Oh, no! more adapters!
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