It seems that Samsung has done some shuffling with their memory cards, and the Samsung Plus is no longer available. Instead, they have instead drawn on their SSD branding scheme and bought the Evo moniker to their microSD and SD cards. They have also refreshed the packaging of the Pro.
As a few more microSDHC cards are always welcome around here, and mWave had a group deal which worked out to be about AU$16.20 per card (including postage and insurance), I decided to grab a pair to give it a go.
The evo cards come with orange colouration, similar to the plus and are specified up to 48Mb/s similar to the plus. The body of the card and adapter is coloured white, however, and the adapter is packaged with the card.
The particular package has been tailored for the Asia-Pacific and China market, with a model code of MB-MP32D, which is fairly similar to the MB-MPBGB of the Plus card. The text has been labelled over with revised text, and ten year warranty is not offered for Australian purchases from mWave. It also seems the adapter is guaranteed for one year.
The supplied adapter is a quality item, and is uniquely molded with good contact. The lock switch itself is very sturdy and unlikely to be loosened by inserting into an SD slot unlikely some other generic adapters.
The card itself also appears to be marked similarly to the Samsung Plus, although the white colouration is printed on the top and along the edges.
The card details are as follows:
Size: 31,440,502,784 bytes CID: 1b534d3030303030100bd030d600e4f1 CSD: 400e00325b590000ea3f7f800a4040c3
The size of the card is identical to that of the Samsung Plus.
HDTune Pro with Transcend RDF8
Sequential read averaged 31.3Mb/s, which is very similar to the Plus which clocked in at the same figure.
HDTune Pro with Kogan RTS5301
Sequential read on the Realtek RTS5301 clocked in at 31.9Mb/s compared to the Plus clocking in at 32.0Mb/s (virtually identical). No compatibility issues were noted.
CrystalDiskMark with Transcend RDF8
The results from CrystalDiskMark seems to be pretty similar to the Plus, and is closer to the 48Mb/s figure on the package, but not quite there.
CrystalDiskMark with Kogan RTS5301
The anomaly with the 512k write test on the RTS5301 also appears, similar to the Plus card, which implies that they are one and the same product. It also reminds us the performance is highly workload dependent.
H2testW with Transcend RDF8
The default formatting doesn’t quite allow for H2testw to test the full surface, however, no errors were found and the average writing speed throughout was 17.8Mb/s, and the average reading speed was 40.2Mb/s. A fairly solid result for a low cost card, but it seems to suggest timing issues which may influence the CrystalDiskMark results. This is the sort of performance you would expect for large sequential transactions.
Raspberry Pi Compatibility
In a recent test with the Raspberry Pi Model B+, I noted that the Samsung Plus doesn’t play well with the board. What happens with the evo, I wondered?
As it turns out, the card doesn’t seem to be compatible with my Raspberry Pi Model B+ board. However, using the Raspberry Pi Model B, it was also incompatible.
I even changed adapters in case that was the cause … however, no dice.
This may come about due to driving strength issues, or SD card driver issues with the Raspberry Pi. It is hence my advice not to purchase either the Samsung Plus or Samsung Evo for Raspberry Pi applications at this time.
It appears that the Samsung Evo branding is merely the replacement for the Samsung Plus branding. The card itself retains a very similar performance behaviour, and similar incompatibilities with the Raspberry Pi. It remains a solid buy, for a good balance of performance (i.e. faster than the competing Sandisk Ultra) provided that you aren’t intending to use it with the Raspberry Pi.