Which card runs faster, CF or SD?

[Ghentai]

Not talking about speed of memory cards, just comparing a CF and a SD both having the same nominal speeds, which one performs faster on Axim x51v?

Thanks in advance

(Sorry about my english)

[coach_ng]

about the same.

[Doulos_Iesou]

My experience (through benchmarking) is that the SD card reader on the Axim X51v is slightly faster than the CF reader. I'm using a Sandisk Ultra II 2.0 GB SD and Sandisk Ultra II 1.0 GB CF. The difference is only about 2-5% though.

Michael

[yengkl]

SD is far faster than CF.
I'd used Pocket Mechanic to test my 2G Transcend 150x SD, 1G Kingston Elite Pro CF and 8G A-Data 120x CF, in my X51v. And I use FDbench + Kingston USB 15in1 card reader in my notebook Dell D610.

In X51v:
SD read is more than 5.4MB/s, CF is about 1.2MB/s(both Kingston and A-Data).
About write speed, SD is 2.6MB/s and CF is 1.2MB/s(both Kingston and A-Data).

In Dell D610:
SD read is more than 15MB/s, A-Data is about 15MB/s and Kingston is 5MB/s.
SD write is about 10MB/s, A-Data is about 3.8MB/s and Kingston is about 5MB/s.

So I'm sure that SD is definitely faster than CF in X51v.
FYI.

[axzilla]

it depends on the brand of the card and its rated speed all cards are not rated the same some cards have slower write speeds than others the read speeds vary alot also depending on the brand ultra cards are always faster than none ultra but your axim is nowhere near that fast most regular cards are faster than yor axim cf or sd

[KenKK]

You sound like you have some experience with SD cards.

I need to upgrade to 4Gigs. My 2Gig is just about full.
What speed would be the fastest required to see a noticable difference.
I am guessing some cards might be faster than Axim can take advantage
of.

What's the best method to transfer all the data from my 2Gig to the 4Gig?
I was going to copy using activesync from the SD card to my desktop, remove
the 2 gig, install the 4Gig then copy everything back to the 4Gig.

KenKK

SD is far faster than CF.
I'd used Pocket Mechanic to test my 2G Transcend 150x SD, 1G Kingston Elite Pro CF and 8G A-Data 120x CF, in my X51v. And I use FDbench + Kingston USB 15in1 card reader in my notebook Dell D610.

In X51v:
SD read is more than 5.4MB/s, CF is about 1.2MB/s(both Kingston and A-Data).
About write speed, SD is 2.6MB/s and CF is 1.2MB/s(both Kingston and A-Data).

In Dell D610:
SD read is more than 15MB/s, A-Data is about 15MB/s and Kingston is 5MB/s.
SD write is about 10MB/s, A-Data is about 3.8MB/s and Kingston is about 5MB/s.

So I'm sure that SD is definitely faster than CF in X51v.
FYI.

[yengkl]

You sound like you have some experience with SD cards.

I need to upgrade to 4Gigs. My 2Gig is just about full.
What speed would be the fastest required to see a noticable difference.
I am guessing some cards might be faster than Axim can take advantage
of.

What's the best method to transfer all the data from my 2Gig to the 4Gig?
I was going to copy using activesync from the SD card to my desktop, remove
the 2 gig, install the 4Gig then copy everything back to the 4Gig.

KenKK

Be honest, normally I couldn't wait so long for usb activesync transfer. And I'd tried WLAN and CF 100BaseT LAN card sharing, usb activesync is just a little bit faster.

So if it's me, I will use fast USB2.0 card reader + desktop to copy/past.

http://www.robgalbraith.com/bins/mul...?cid=6007-8462

I'm using Kingston 15-in1 USB card reader and it's works fine for me.