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iain_benson · 02-18-2009, 07:56 AM

I've just done some quick benchmarking tests of various memory card types in the PRS-505 and assorted readers. I've used XBench on the Mac, and quoted the speed in megabytes per second for 256K block uncached reads and writes.

I don't know whether it is the internal card readers in the PRS-505, or the USB access, but it is disturbingly slow, even compared to a cheap USB reader. It's a pity there is no real way of getting an internal speed benchmark from it.

Code:


         Memory Card  Sandisk Extreme III 8GB MS   Sandisk 2GB SD    Sandisk 2GB Micro SD   Sandisk Extreme IV 8GB CF
Reader                       Read    Write          Read   Write        Read    Write            Read    Write
Sandisk Extreme FW           4.07     3.86          9.08    3.72        9.01     3.24            83.93   67.29
Trust USB                    4.51     4.22          3.68    3.51        3.65     2.59		
PRS-505 USB                  1.90     1.58          2.40    1.70        2.56     1.83		
Sony Express Card           38.33    35.04

Note : I used a Sony Memory Stick to CF adaptor, a generic unbranded SD to CF adaptor and a Sandisk Micro SD to SD adaptor where necessary.

02-18-2009, 07:56 AM	#1
iain_benson Connoisseur Posts: 58 Karma: 37 Join Date: Oct 2008 Device: PRS-600	Memory Card Access Speeds I've just done some quick benchmarking tests of various memory card types in the PRS-505 and assorted readers. I've used XBench on the Mac, and quoted the speed in megabytes per second for 256K block uncached reads and writes. I don't know whether it is the internal card readers in the PRS-505, or the USB access, but it is disturbingly slow, even compared to a cheap USB reader. It's a pity there is no real way of getting an internal speed benchmark from it. Code: Memory Card Sandisk Extreme III 8GB MS Sandisk 2GB SD Sandisk 2GB Micro SD Sandisk Extreme IV 8GB CF Reader Read Write Read Write Read Write Read Write Sandisk Extreme FW 4.07 3.86 9.08 3.72 9.01 3.24 83.93 67.29 Trust USB 4.51 4.22 3.68 3.51 3.65 2.59 PRS-505 USB 1.90 1.58 2.40 1.70 2.56 1.83 Sony Express Card 38.33 35.04 Note : I used a Sony Memory Stick to CF adaptor, a generic unbranded SD to CF adaptor and a Sandisk Micro SD to SD adaptor where necessary.