The HP S700 And S700 Pro SSD Review
by Billy Tallis on September 7, 2017 9:00 AM ESTPower Management
Real-world client storage workloads leave SSDs idle most of the time, so the active power measurements presented earlier in this review only account for a small part of what determines a drive's suitability for battery-powered use. Especially under light use, the power efficiency of a SSD is determined mostly be how well it can save power when idle.
SATA SSDs are tested with SATA link power management disabled to measure their active idle power draw, and with it enabled for the deeper idle power consumption score and the idle wake-up latency test. Our testbed, like any ordinary desktop system, cannot trigger the deepest DevSleep idle state.
Idle power management for NVMe SSDs is far more complicated than for SATA SSDs. NVMe SSDs can support several different idle power states, and through the Autonomous Power State Transition (APST) feature the operating system can set a drive's policy for when to drop down to a lower power state. There is typically a tradeoff in that lower-power states take longer to enter and wake up from, so the choice about what power states to use may differ for desktop and notebooks.
Active idle is representative of a typical desktop, where none of the advanced PCIe or SATA link or NVMe power saving features are enabled and the drive is immediately ready to process new commands. The idle power consumption metric is measured with PCIe Active State Power Management L1.2 state and SATA Device-Initiated Power Management enabled and NVMe APST enabled.
Drive capacity has little effect on idle power consumption. Active idle power draw comes down mostly to the choice of controller. The Phison S10 is the best, followed by Samsung's SSDs and then the HP S700 with the SM2258XT. The S700 Pro with its DRAM more than 100mW extra at idle.
With link power management enabled, the S700 Pro has good power savings but doesn't stand out from the crowd. The S700 apparently fails to engage the slumber power state and thus power doesn't go down at all. This makes the S700 a poor choice for mobile use, but this may simply be a firmware bug that could be fixed.
The idle wake-up latency of the S700 is minimal, since it never actually enters a low-power state. The Phison S10 drives are by far the fastest to wake up from the slumber state, and the S700 Pro falls in the second tier of drives that wake up in less than 1ms.
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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
AgreedyankeeDDL - 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.