Final Words

The HP S700 is in theory handicapped by its DRAMless controller. Random access performance in particular suffers without a DRAM cache, and garbage collection on a near-full drive is more of a chore. This doesn't necessarily translate to a significant disparity in real-world performance. The S700 falls behind on the heaviest real-world tests and performs much worse when it is full, but on more common lighter workloads and with plenty of unused capacity, it is not immediately obvious that the drive is DRAMless. On workloads where the S700's performance doesn't tank, it also offers great power efficiency. Its apparent inability to enter the slumber idle power state prevents me from recommending it for mobile use, but this issue may be fixable with a firmware update. The S700 also offers a surprisingly high sequential read speed, much better than any other SATA SSD using Micron 3D NAND, including the S700 Pro and even the MLC-based Crucial BX300.

The HP S700 Pro is in closer competition with the kinds of SATA SSDs we typically review. The S700 Pro uses the same NAND and the same controller as the ADATA SU800 we reviewed earlier this year. HP's firmware tuning clearly pays off, as the S700 Pro outperforms the SU800 across the board in both performance and power efficiency. The improvement is seldom enough to allow the S700 Pro to deliver mid-range performance like the Crucial MX300, but it's clear the S700 Pro is more refined than the SU800. The S700 Pro also handles operating in a nearly-full state much better than the SU800, and the 512GB S700 Pro's performance is barely affected by being full. We suspect the 1TB S700 Pro will also offer similarly good all-around performance with few caveats. The 256GB S700 Pro's performance will drop on a wider range of workloads but is still decent.

Building a SSD with decent performance in the 120/128GB capacity class is quite challenging with modern NAND flash chips that mean the drive will only have three or four dies to stripe accesses across. Several vendors no longer attempt this and start even their entry-level SSD product lines at 240GB or more. With NAND flash prices elevated by a shortage, there's still some demand for smaller SSDs. Crucial just re-entered this product segment with the MLC-based BX300, but we haven't yet had the chance to confirm whether the 120GB BX300 performs as well as its larger versions suggest is should. Aside from the BX300, it looks like the 128GB HP S700 Pro is probably one of the best performers in that capacity class from the current or previous generation of SSDs. However, everything in this capacity class is at a substantial disadvantage to larger drives, and this will continue to be the case unless someone starts manufacturing 128Gb 3D NAND dies.

  120-128GB 240-275GB 480-525GB 960-1050GB 2TB
HP S700 $69.93 (58¢/GB) $116.48 (47¢/GB) $199.99 (40¢/GB)    
HP S700 Pro $59.97 (47¢/GB) $106.99 (42¢/GB) $207.86 (41¢/GB) $369.99 (36¢/GB)  
Crucial BX300 $59.99 (50¢/GB) $89.99 (38¢/GB) $149.99 (31¢/GB)    
Crucial MX300   $99.99 (40¢/GB) $159.99 (32¢/GB) $289.99 (29¢/GB) $549.00 (27¢/GB)
ADATA SU800 $56.68 (44¢/GB) $93.45 (37¢/GB) $160.00 (31¢/GB) $269.98 (26¢/GB)  
Samsung 850 EVO   $89.99 (36¢/GB) $139.99 (28¢/GB) $327.00 (33¢/GB) $697.99 (35¢/GB)

We're not sure if Micron is selling the Crucial BX300 at a loss, but they're certainly selling it with slimmer margins than most budget SSDs. While this pricing holds, there's no reason to consider drives with Micron's TLC, and the next step up would be the Samsung 850 EVO. At the moment, the 500GB 850 EVO is even cheaper than the BX300. Meanwhile, the HP S700 isn't consistently cheaper than the S700 Pro, and the latter is substantially more expensive than the BX300 except at the smallest capacity.

While the HP S700 and S700 Pro are not currently priced competitively, they do show that there's value in continued firmware tuning. More than a year after Micron's 32-layer 3D NAND hit the market, the HP S700 sets a new record for sequential read performance from a four-channel controller, and helps show that DRAMless SSDs can't be immediately dismissed from consideration. The S700 Pro improves on the performance that can be obtained from the combination of Micron's 32L 3D TLC and the SM2258 controller, which are now both nearing the end of their product cycles. These improvements bring the SM2258 controller into closer competition with the more expensive Marvell controllers.

Power Management
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  • sonny73n - Saturday, September 9, 2017 - link

    I understand that but where it'll lead us to? Most of things cost much more in the US compared to the same in China - from gasoline to food. A Chinese can cover his living expenses with just $1000/month while it takes at least twice that much for an American. Keep on rising the minimum wage will not solve the problem because we will be left with nothing to produce. Something's really messed up here.
  • demMind - Monday, September 11, 2017 - link

    sonny.. US Companies can afford to pay wages in the US. They just don't want to because executives love their year-over-year bonuses and dividends to grow. So no, prices haven't gone up because of cost of labor, they've gone up because each of us wants as much as we can get for as little extra effort as possible.
  • Fujikoma - Thursday, September 14, 2017 - link

    The price wouldn't be that much more. That extra labor savings is balanced by less efficient use of labor, material waste, shipping costs, increased counterfeit products, higher CEO pay and stock payouts if they exist (Apple is a good one for this). When companies moved to China, they did not lower their prices from cheaper labor. They lined their pockets with the extra cash. I worked for over a decade with a major electronics manufacturer invested heavily in China. Nothing but a headache for such a slim margin. That was with a 50X price margin on one of their highest volume products compared to a 12X price margin with the Mexican produced product (selling price relative to claimed materials + labor + storage + packaging + advertising + everything else involved). The higher margin is offset by shipping, defective/poorly made product, counterfeit product and material waste from poor manufacturing setup.
    As to the cheaper labor, that's because the U.S. allows product made from next to slave labor AND product made in environmentally damaging conditions to be imported into this country. Why do you think China has a pollution problem (aside from coal)... less regulation compared to Europe, Canada, Japan and the U.S.
  • Samus - Tuesday, December 26, 2017 - link

    Sonny, you realize Lenovo lost the crown 2 years ago? They held the #1 spot for 14 quarters. HP has held the #1 spot for 39 quarters since 2006 when they took it from Dell.

    Nobody is hurt...except the Fortune 500 companies that blindly bought into Lenovo based on price, only to have their IT dept advocate for change almost immediately. Which aligns perfectly with the 3 year corporate product cycle and the amount of time Lenovo held the #1 sales edge in North America.

    I'm an IT director, I know first hand the outcry my community had over Lenovo, and not just in relation to superfish.
  • petar_b - Tuesday, September 12, 2017 - link

    I don't stand any of these big players HP, Lenovo.... It's all rip off, Lenovo's licensing is too complicated (can't activate features you paid for on hardware that they consider obsolete) and then on HP side plenty of similar crap. You almost feel bad for asking for something you own/deserve/paid.... I love SunMicro, chenbro, clean LSI or Adaptec works with everything. What HP SSD, that one will be backed by warranty only if attached to their mobo, or whatever other stupidity...
  • Flunk - Thursday, September 7, 2017 - link

    Marketing terms are always meaningless without context. You always need to read the specs behind the glossy advertising to know what you're buying. I don't see that changing any time soon.
  • MajGenRelativity - Thursday, September 7, 2017 - link

    Agreed
  • yankeeDDL - Thursday, September 7, 2017 - link

    I'm shocked by the price. Dramless, with those specs, should be $70, top, for the 240GB.
    Why in the world would I spend no less than $116, when the EVO sells for $90?!?!?!
  • Glock24 - Thursday, September 7, 2017 - link

    Just what I was thinking. Pricing on these are ridiculous. They have a bit more storage size, but so does the Crucial MX300 and it's also way cheaper and faster!
  • Samus - Thursday, September 7, 2017 - link

    The MX300 is pretty much the only economy drive to consider outside of an 850 EVO IMHO. Even if these sell for half the retail price, they aren't worth it. You can just pickup an old M500 on eBay (or even an OEM Intel 520/530) for half these prices and have similar performance.

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