Cf Card Tests Using Pocket Mechanic

[davecarr]

I recently purchased two memory cards that were advertised as "150X fastest cards available". They are represented as being made by Samsung.

When I received them I found:
1. The 4GB SD card did not work at all.
2. The 8GB CF card seemed to be rather slow. So I tested it and then decided to test the 4 different large capacity cards that I had available. The results are shown below. Draw your own conclusions.
3. The 4GB SD card and the 8GB CF cards, Samsung, were purchased from FASTMemoryMan, at www.emartbuy.com

BENCHMARK PARAMETER RESULT RESULT
Card Tested SandDisk (Std) SanDisk Extreme III
Capacity 2 GB Capacity 4 GB Capacity (133X)
Mfg's Speed Rating 80X 133X
Min Read Time (ms) 0.25 0.25
Max Read Time (ms) 25 19.5
Avg Read Time (ms) 6.18 0.83
Min Write Time (ms) 0.25 13.25
Max Write Time (ms) 58 37.5
Avg Write Time (ms) 24.37 14.44
Read/Write Ratio 0.25 0.06

BENCHMARK PARAMETER RESULT RESULT
Card Tested FastMemory Man Hitachi Microdrive
Capacity 8 GB Capacity 4 GB Capacity
Mfg's Speed Rating 150x unrated
Min Read Time (ms) 0.25 1.25
Max Read Time (ms) 550.25 18.5
Avg Read Time (ms) 10.58 4.8
Min Write Time (ms) 0.25 3
Max Write Time (ms) 176.75 29
Avg Write Time (ms) 64.98 4.08
Read/Write Ratio 0.16 1.18

Test results running Pocket Mechanic in a Dell Axim X51v
to test CF storage cards with processor speed set to max @ 624 Mhz

Can't deny that there is a significant difference between different cards. These tests show only relative speed in my Axim X51v not any absolute speed.

Draw your own conclusions

davecarr

[DavesPPC]

The 4GB SD card and the 8GB CF cards, Samsung, were purchased from FASTMemoryMan, at www.emartbuy.com

The first problem is where you bought the cards.
The second problem....please refer to the first problem.

Please don't tell us you paid what he has listed on his site.....

FYI: PQI isn't a high quality card to begin with (or manufacturer if you will).
Just check out his "reviews" that he actually posted:


And if you can't read the text, just look here.

[davecarr]

When I puchased the 8 gb CF card it was advertised as a 150X speed, and was advertised as a Samsung card, and the "fastest card" which it was not.

I did at least expect the SD card to work - and it did not.

I posted the results "for others" not to get trapped.

davecarr