JMicron JMF667H Reference Design (128GB & 256GB) Review
by Kristian Vättö on May 29, 2014 9:00 AM ESTPerformance vs. Transfer Size
ATTO is a useful tool for quickly benchmarking performance across various transfer sizes. You can get the complete data set in Bench. Read performance is very similar to the ADATA SP920, which isn't a terrible thing but as you can see there are better SSDs. I'm surprised that there isn't really any boost from Toshiba NAND, although I'm guessing this is more of a controller bottleneck than a NAND one since reading from NAND is much faster than writing in the first place.
As for write performance, it's not top notch at the bigger IO sizes but the performance scales pretty well before reaching its limit. Now the NAND shows a major role as the the drives equipped with Toshiba's 64Gbit NAND perform much better than their IMFT counterparts.
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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