====== Flash Memory Benchmarks ======
Because I've got a load of different type of flash memory cards in my spares box, I maintain a spreadsheet and performance data list for them all.
{{:blog:flashmemorybenchmarks.png?800|}}
{{ :blog:flash_media_comparison.xlsx |}}
===== Compact Flash =====
==== Canon FC-8M 8MB ====
{{:blog:img20210124141803.jpg?200|}}
Disk benchmark does not complete.
Output from //hdparm -t//
Timing buffered disk reads: 2 MB in 23.81 seconds = 86.00 kB/sec
First card I owned, from a Canon Powershot 2Mpix camera.
==== Delkin 511MB ====
{{:blog:img20210124143152.jpg?250|}} {{:blog:delkin_511mb.png?250|}}
==== Integral 64MB ====
{{:blog:img20210124141810.jpg?200|}}
Disk benchmark does not complete.
Output from //hdparm -t//
Timing buffered disk reads: 2 MB in 22.76 seconds = 89.99 kB/sec
I suspect this one is virtually dead.
==== Kingston Elite Pro 133x 4GB ====
{{:blog:img20210124143917.jpg?200|}} {{:blog:kingston_elitepro_133_4gb.png?250|}}
==== Kingston Elite Pro 133x 8GB ====
{{:blog:img20210124141828.jpg?200|}} {{:blog:kingstone_elitepro_133_8gb.png?250|}}
==== Kingston Ultimate 266x 16GB ====
{{:blog:img20210124141839.jpg?200|}} {{:blog:kingston_ultimate_266_16gb.png?250|}}
==== Sandisk Extreme IV 2.0GB ====
{{:blog:img20210124141820.jpg?200|}} {{:blog:sandisk_extreme_iv_2gb.png?250|}}
==== Sandisk Ultra II 4.0GB ====
{{:blog:img20210124143619.jpg?200|}} {{:blog:sandisk_ultra2_4gb.png?250|}}
==== Sandisk Ultra 50MB/s 16GB ====
{{:blog:img20210124141849.jpg?200|}} {{:blog:sandisk_ultra_50mbs_16gb.png?250|}}
==== Sandisk Extreme 120MB/s 64GB ====
Wow. Very, //very// fast.
{{:blog:img20210127131929.jpg?200|}} {{:blog:cf_sandisk_extreme_120_64gb.png?250|}}
==== Transcend 133x 8GB ====
{{:blog:img20210124141815.jpg?200|}} {{:blog:transcend_133_8gb.png?250|}}
===== SD Cards =====
==== Crucial 2GB ====
{{:blog:sd_crucial_2gb.png?250|}}
==== Integral Ultima XC I 64GB ====
Really odd performance with this one.
{{:blog:sd_integral_64gb.png?250|}}
==== Sandisk 2GB ====
{{:blog:sd_sandisk_2gb.png?250|}}
==== Sandisk Ultra 30MB/s 32GB ====
{{:blog:sd_sandisk_ultra_32gb.png?250|}}
==== Sandisk Ultra II 2GB ====
{{:blog:sd_sandisk_ultra_2gb.png?250|}}
===== Micro SD Cards =====
==== Sandisk Ultra HC I 8GB ====
Strong read performance.
{{:blog:microsd_sandisk_hci_8gb.png?250|}}
==== Kingston HC 4 32GB ====
Pretty slow.
{{:blog:microsd_kingston_hc4_32gb.png?250|}}
==== Transcend XC I A1 V30 128GB ====
Excellent performance, but what is up with the write performance fluctuation? Does this thing have a SLC buffer that is getting flushed every so many megabytes?
{{:blog:microsd_transcend_x1_a1_v30.png?250|}}
==== Integral XC I A1 256GB ====
{{:blog:microsd_integral_256gb.png?250|}}
==== UNKNOWN HC 32GB ====
Failed test. Was averaging 10MB/s read before failure.
{{:blog:sd_unknown_32gb.png?250|}}