As promised in the other thread, here are the results for my new Transcend 150x 4GB card.
I checked the card for read and write speeds in the x50v using Spb Benchmark and in my card reader using HDBench and running a real world test.
All tests show that the card has really fast read rates. Write rates are OK but not outstanding according to HDBench. The real world test (a write test) in the card reader shows virtually no performance delta between the Transcend 150x 4GB and the Ridata 150x 2GB although the latter shows significantly higher write rates in HDBench. The synthetic benchmark should probably not be overrated.
I am looking forward to seeing EngrPaul's results for the same card. His x50v has A05 firmware which is supposed to increase SD card performance compared to the A03 installed on my x50v.
Anyway, the gory details for the propeller heads follow below.
Proceed at you own risk ;).
Tested with Spb Benchmarks ("Copy ..." tests unselected) on x50v with A01 HW and A03 FW. Empty card. Running on battery - i.e.
not cradled nor on mains.
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Code:
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Writing 1 MB file 1679 ms 610 KB/sec
Reading 1 MB file 383 ms 2.61 MB/sec
Writing 100 of 10 KB files 16681 ms 61.4 KB/sec
Reading 100 of 10 KB files 572 ms 1.75 MB/sec
Directory listing: 2000 files 146 ms 13.7 thousands of files/sec
Speed index 182 |
After copying 1.03GB (178 files in 27 folders) from HD to card:
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Code:
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Writing 1 MB file 2024 ms 506 KB/sec
Reading 1 MB file 406 ms 2.46 MB/sec
Writing 100 of 10 KB files 21825 ms 46.9 KB/sec
Reading 100 of 10 KB files 571 ms 1.75 MB/sec
Directory listing: 2000 files 146 ms 13.7 thousands of files/sec
Speed index 163 |
To get speed ratings - x factors - divide kB/s by 150, multiply MB/s by 1024 to get kB/s. In comparison, the Ridata 150x 2GB card has these stats:
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Code:
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Writing 1 MB file 1029 ms 995 kB/sec
Reading 1 MB file 352 ms 2.84 MB/sec
Writing 100 of 10 KB files 9591 ms 107 kB/sec
Reading 100 of 10 KB files 564 ms 1.77 MB/sec
Directory listing: 2000 files 147 ms 13.6 thousands of files/sec
Speed index 214 |
After copying 1.03GB (178 files in 27 folders) from HD to card:
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Code:
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Writing 1 MB file 1206 ms 849 kB/sec
Reading 1 MB file 349 ms 2.87 MB/sec
Writing 100 of 10 KB files 11690 ms 87.6 kB/sec
Reading 100 of 10 KB files 577 ms 1.73 MB/sec
Directory listing: 2000 files 147 ms 13.6 thousands of files/sec
Speed index 205 |
Copying those 1.03GB (178 files in 27 folders) from HD to card took
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Code:
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Transcend 4GB 150x - 3:12 minutes
Ridata 2GB 150x (FAT32) - 3:10 minutes |
When using the HDBench in my SD 1.0 compliant card reader the Transcend 4GB shows very good sequential and random read rates between 9.3MB/s and 9.6 MB/s. That puts it clearly ahead of the Ultra II and ever so slightly ahead the Ridata 150x 2GB, but not quite up to the Extreme III 1GB.
Write rates in my SD 1.0 compliant card reader are not brilliant, however.
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Code:
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Read Write RRead RWrite Drive
9343 7488 9443 1391 Y:\1MB
9490 5366 9633 1204 Y:\10MB
9595 5267 9455 1190 Y:\100MB |
To put this into perspective, the sequential and random write rates compare to the Lexar Pro 1GB 60x and Ridata 1GB 66x cards. Ridata 150x, and particularly Ultra II and Extreme III, achieve clearly superior write test results in HDBench.
I expect the results to be significantly different in a SD 1.1 compliant card reader - but were can I get one?