After all the enterprise and OEM drive announcements last month surrounding Flash Memory Summit, we've finally got a new drive to talk about that will be sold directly to consumers and available through retailers. Toshiba's Q300 and Q300 Pro drives are client-focused SATA drives using Toshiba-branded flash and controllers. The Q300 uses TLC flash and has an endurance rating of about 0.23 drive writes per day for three years. The Q300 Pro uses MLC flash and is rated for about 0.34 drive writes per day for five years.

Toshiba Q300 SATA SSDs
Capacity 960GB 480GB 240GB 120GB
NAND Toshiba TLC
Controller Toshiba TC358790
Sequential Read 550 MB/s
Sequential Write 530 MB/s
4kB Random Read IOPS 87k
4kB Random Write IOPS 83k
Endurance Rating 240TB 120TB 60TB 30TB
SLC caching Yes
QSBC Error Correction No
Active Power Consumption 5.1W
Idle Power Consumption 1.1W
MSRP $449.99 $309.99 $159.99 $99.99

TLC-based drives require more power for writes, but the idle power rating is quite high and makes the Q300 unsuitable for mobile use.

Toshiba Q300 Pro SATA SSDs
Capacity 512GB 256GB 128GB
NAND Toshiba MLC
Controller Toshiba TC58NC1000
Sequential Read 550 MB/s
Sequential Write 520 MB/s
4kB Random Read IOPS 92k
4kB Random Write IOPS 63k
Endurance Rating 320TB 160TB 80TB
SLC caching Yes
QSBC Error Correction Yes
Active Power Consumption 3.3W
Idle Power Consumption 125mW
MSRP $389.99 $199.99 $124.99

The Q300 Pro seems tuned for a read-oriented workload, with significantly lower random write performance than the Q300, despite TLC being inherently slower for writes. On the other hand, power consumption is much more reasonable, although the Q300 Pro idle power is still a little behind the competition.

The Q300 Pro is listed as using the same TC58 controller that is in the TLC-based OCZ Trion 100, which bore suspicious similarity to the Phison S10 as seen in the Corsair Neutron XT.

The Q300 is shipping now, and the Q300 Pro will ship later this month, when ordered directly from Toshiba's website. Our review samples are on the same timetable, so look for our benchmarks in a few weeks.

Source: Toshiba

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  • Flunk - Friday, September 4, 2015 - link

    They'll have to in this case if they want to move any inventory at all.
  • Impulses - Friday, September 4, 2015 - link

    In the case of the 480GB TLC drive, street price would need to be 50% off MSRP for it JUST to be competitive with what's out there (read: the $160 EVOs)...

    And that's probably one of the most common capacities for upgraders and enthusiasts right now, if not the very sweet spot. The MSRP range from bad to bonkers.
  • mforce - Friday, September 4, 2015 - link

    TLC at the price of MLC ( or even more expensive ) yeah sure .... but meh , since some consumers aren't very well informed this might fly ... though I do suspect people buying SSDs kind of know what they're doing.
  • bill.rookard - Friday, September 4, 2015 - link

    Nothing in the 2TB range, let alone anything in the 1TB range that's moderately affordable? Nope. Pass.
  • yeeeeman - Friday, September 4, 2015 - link

    Have a Samsung 840 Pro 256GB. Even with a T9600 config, you cannot wish for more. Blazing fast, reliable and big enough for anything that can't be downloaded from the Internet (which is becoming more and more a thing of the past). And with a 300Mbps internet speed (avg is 35MB/s), well it's perfect. So I think the state of things at the current moment in time are good, good enough I would say.
  • ilkhan - Friday, September 4, 2015 - link

    Not a chance.
    Those prices suck, and performance levels for SATA based drives is already saturated.
  • romrunning - Friday, September 4, 2015 - link

    I don't understand why the MLC version has lower random write than the TLC. You would think that if they want to name it the "Pro" version, it should have better stats than the "normal" version in every category except for price (higher, obviously).

    Just for that reason alone (and that the Samsung 850 Pro is so good in everything), I'm not going to buy the Q300 Pro.
  • DanNeely - Friday, September 4, 2015 - link

    Different controllers, so different optimizations. We'll need to wait for the review; but trading off a lower burst rate for the peak score, for either better consistency or better performance in sustained use would be an obvious one.
  • lilmoe - Friday, September 4, 2015 - link

    Samsung SSD 850 Evo on sale for @2.7 a gig, just saying...
  • dgingeri - Friday, September 4, 2015 - link

    Let's see, compared to the Samsung 850 Pro: slower performance, less durability, higher price, and from a company that has a worse reputation for reliability. Yeah, this won't sell.

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