JMicron JMF667H Reference Design (128GB & 256GB) Review
by Kristian Vättö on May 29, 2014 9:00 AM ESTPower Consumption
The JMF667H supports both DevSLP and slumber power states. Unfortunately we don't have the equipment to test DevSLP power (yet) but we do have the necessary equipment for slumber power testing. For some reason, the 128GB versions drew a lot more power compared to the 256GB Toshiba model. I tested the 128GB drives twice to make sure there was no measuring error but both times the results were similar. Anyway, the slumber power especially for the 256GB Toshiba drive is very impressive. Having a 4-channel design can certainly help to cut down power consumption and the JMF667H turns out to be more efficient than the latest Marvell silicon.
Power consumption under load is also among the lowest we have tested and the JMF667H stays below three watts at all times.
The 256GB IMFT model wouldn't power on during power tests for some weird reason, so unfortunately I don't have power figures for it. It still functioned normally when plugged straight into the power supply, so I don't think there is anything wrong with the drive itself. I've had similar issues with some drives and it seems to be related to the extra resistance caused by the multimeter and additional wiring.
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hojnikb - Thursday, May 29, 2014 - link
They should support TLC aswell.Couple TLC flash with a cheap and decent controller and you have a cheap and still reasonably performing drive.
I'm really surprised how far jmicron came over the last few years.
Death666Angel - Thursday, May 29, 2014 - link
Is anyone but Samsung getting SSD grade TLC at this time though?Laststop311 - Thursday, May 29, 2014 - link
Samsung has that unique position they can integrate the design of all the different parts of an ssd all under Samsung. The controller, dram, nand, firmware. This allowed samsung to quickly transition to TLC nand. This really makes the 1TB evo drive the best 2.5" drive for value/performance ratio. Samsung has the best performing m2 drive too the xp941.hojnikb - Thursday, May 29, 2014 - link
Also, is anantech gonan review the new SMI based drives ?hojnikb - Thursday, May 29, 2014 - link
*gonna* ... damn no edit optionrpg1966 - Thursday, May 29, 2014 - link
* "going to"Kristian Vättö - Thursday, May 29, 2014 - link
Yes. I have Corsair's Force LX and ADATA's SP620 but they'll have to until I come back from Computex.hojnikb - Thursday, May 29, 2014 - link
Great !Looking foward to your review.
romrunning - Thursday, May 29, 2014 - link
Can we also see a review for the Samsung XS1715 and the SMART Optimus Ultra SSDs?vonWolfhausen - Thursday, May 29, 2014 - link
Agreed. I have a PNY optima 240gb that I picked up for $90 (the discount actually came through). The SMI controller in it is legit. 500read/300write with low power consumption (micron 20nm sync MLC). Im curious about the performance consistancy, seems ok