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Asus K72JV Battery all-laptopbattery.com

Integral told us that based on its flash vendor’s claims, it reckons the MO-300 has a remarkable 730TB TBW endurance. This could well be true or some applied mathematics. Still, the 256GB drive is backed with a three-year warranty. It has a strong Sequential performance and is not too costly, either.If you’re looking for a really portable laptop that you can carry around all day, then Dell’s Latitude 11 3150 Education series model is worth checking out. It’s neatly designed, with a sturdy case and rubber trim to absorb the occasional bump in a backpack. The 11-inch screen might not suit everyone, and the 1366×768 resolution means that you don’t have much room to play with on the Windows desktop, but it’s quite bright and works well for streaming video.There’s a non-gloss coating on the screen too, so you can use it outdoors without too much glare and reflection to distract you. That small screen keeps the weight down, and at just 1.35kg and 22.9mm thick the Latitude 11. The only minor disappointment is that the quad-core 2.16GHz Intel N3540 Pentium processor used by the Latitude 11 – the same as on the Acer – isn’t a great performer.Its scores of 1511 and 1978 when running the Home and Work suites in PCMark 8 are closer to tablet territory than hard-working laptop. Even so, the Latitude 11 works fine for web browsing and running Microsoft Office, and its 128GB solid-state drive makes it feel a little faster and more responsive than we expected.

Battery life was an unexpected surprise too – it lasted 5.5 hours when running PCMark 8, and managed a full nine hours when streaming video from the BBC iPlayer, so it’s a really good option if you need a basic laptop for web browsing that can last all day long.Intel’s 530 series has been around for an age (2013 to be exact) and is, in fact the last drive series to date that Intel has offered in an mSATA format, as well as the standard 2.5in drive. Give its age, the loan stock is thin on the ground and so we had to make do with a 180GB model, courtesy of Overclockers UK.With the 530 and a few other drives, Intel used a third-party controller instead of one of its own. In this case, a SandForce SF-2281 (now owned by Seagate) but with Intel involved in writing the firmware. The NAND, however, is the company’s own 20nm MLC. As this is 64Gbit NAND, the flagship of the mSATA range is just 240GB, as it has only room on the PCB for 4 packages of NAND.

Intel quotes figures of 540MB/s and 490MB/s for Sequential Read and Writes respectively, and these were confirmed by testing with ATTO benchmark. All in all, a rather good performance for a drive of the 530’s age. Endurance for the drive is 37TB TBW, which works out around 20GB writes a day for the length of the 5-year warranty.Despite its age, it remains a respectable performer, with the benefit of Intel’s bomb-proof reliability, but it is pricey.Kingston’s SSDNOW mS200 is another drive to make use of the SandForce SF2281 controller but this time pairing it with Micron’s 20nm MLC NAND; the 240GB drive uses four packages – two per side of the PCB.When tested with the ATTO benchmark, the drive produced Sequential Read/Write figures that were in the ballpark of the official ones; 535MB/s for Reads and 533MB/s Writes. Kingston claims 540MB/s and 530MB/s, respectively. Its Random 4k Write performance is pretty strong at 85MB/s but the same cannot be said for the Random 4k Read performance, which is a pretty poor 17MB/s, as measured by the CrystalDiskMark 4k benchmark.

As for endurance, Kingston quotes an astonishing 585TB TBW endurance for the 240GB drive and backs it with a three-year warranty, although the 30GB drive gets just two years. It’s a tad expensive, but it does have amazing endurance – shame the warranty doesn’t last as long as those claims, though.At just over £200, HP’s Pavilion x2 is one of the cheapest options available if you want a low-cost device that runs Windows, rather than Android or ChromeOS. HP describes it as a ‘detachable laptop’, but it’s essentially a tablet that comes with an add-on keyboard.It’s good value, though, with a 10.1-inch touch-screen that provides 1280×800 resolution and a bright, colourful image for streaming video or browsing web pages. It’s powered by a 1.33GHz quad-core Intel Atom Z3736F processor from 2014 with a burst option that can take it up to 2.16GHz. There’s only 2GB of RAM and 32GB eMMC storage, but you can insert a microSD card if you need some extra space.Incidentally, although HP’s site says only 32GB of storage, that does appear to be what remains free, out of the box. Checking the C drive showed a 51.7GB capacity, which suggests OS and recovery partition have already taken their share or HP has decided that you really do need a minimum of 64GB of storage to have a workable Windows PC, as we discovered recently.All in all, the Pavilion x2 only produces scores of 1138 and 1495 when running the Home and Work suites in PCMark, so you probably won’t be doing any video-editing on this machine, but it works fine for basic web browsing and productivity apps.

The touchscreen controls respond smoothly and quickly, and the keyboard panel feels firm and comfortable if you need to type up some notes at a lecture. HP also throws in a year’s subscription to Office 365 to save you some money as well.The Pavilion lasted for six hours when running PCMark 8, and managed 7.5 hours of streaming video, so you’ll get close to a full day of web browsing and basic productivity work at a very competitive price.When the 850 EVO was launched, an mSATA version was nowhere to be seen. But now Samsung has rolled it out, including – as with the previous 840 EVO mSATA range – a flagship 1TB model. This makes it the largest capacity mSATA drive currently available.Also, the 850 EVO is the most advanced drive in this little round-up, due to the fact it uses the latest NAND technology: 3D Vertical NAND or, to be more precise, the TLC version of V-NAND.The mSATA drives are very much the same as their 2.5in brethren. Samsung’s own dual-core MGX controller (the 1TB drive uses the older 3-core MEX controller) and, of course, the company’s own 32-cell layered 40nm 128Gbit TLC V-NAND.

The 250GB mSATA drive uses four 64GB NAND packages to reach its capacity and these are joined on the PCB by 512MB of LPDDR3 cache. The quoted performance for the drive is 540MB/s for Sequential Reads and 520MB/s for Writes. My review drive had no trouble reaching the Read speed but struggled to get anywhere near the Write speed, topping out at 463MB/s.The TDW endurance for the 850 EVO is quoted as 75TB or 41GB/day (120GB/250GB) and 150TB or 82GB/day for the 500GB and 1TB models. All models are backed by a five-year warranty.If, for some reason, you want huge amounts of capacity in the mSATA format, it’s the only game in town.Transcend may not be the first brand that springs to mind when thinking of an SSD, but the company has a range of drives in 2.5in, M.2 SATA and mSATA formats. The current flagship of the range is the MSA370. Transcend has covered all the bases with the 370, as it comes in a wide range of capacities from 16GB all the way up to 512GB.The drive uses a Transcend TS6500 four-channel controller, which is a rebadged Silicon Motion SM2246EN chip, using Transcend’s own firmware and Micron 20nm 128Gbit MLC synchronous NAND. The 256GB mSATA drive uses four 64GB NAND packages to get its capacity.

Read/Write performance for the 256GB drive is quoted at 570MB/s Read and 310MB/s Writes. So while the Read figure is pretty impressive, the Write figure is hardly setting the world on fire. Testing the drive with the ATTO benchmark I got a Read score of 559MB/s, which is a fair bit short of the official figure, while the Write score was bang on at 315MB/s. The Write performance is pretty consistent too, as it scored 314MB/s in CrystalDiskMark’s Sequential Write test.Transcend quotes a 280TB TBW endurance figure for the drive and it’s covered by a three-year warranty. Not a bad all-round drive, with good Read performance and a reasonable price.A recent price cut has brought Lenovo’s B50-80 down to just £330, and it provides a pretty decent hardware spec for that price. The 15-inch laptop includes a Broadwell dual-core Intel Core i5-5200U processor running at a healthy 2.2GHz (up to 2.7GHz with Turboboost), 4GB of RAM and 500GB hard disk.

The hard disk only runs at 5400rpm, and takes a frustrating full minute to boot, but once it’s up and running the B50-80 provides quite respectable performance. The PCMark 8 tests produced scores of 2267 for the Home suite, and 2667 for Work applications, which will be strong enough to handle routine school-work and web browsing, as well as the occasional spot of photo- or video-editing for presentations and reports.Of course, there are compromises though. The 15.6-inch display is merely adequate – its 1366×768 resolution and relatively limited viewing angles aren’t anything to write home about. However, it’s the battery life that proves to be the real weakness.One look at the runty little battery pack tells you that it’s not going to last long, and running PCMark 8 non-stop knocked the battery out in just two hours and 23 minutes. Switching to power-save mode helps a bit, but still only gave us 3.5 hours of streaming video with the BBC iPlayer. So while the B50-80 provides good performance when it’s plugged in, it’s not the best choice if you need good battery life when you’re out and about.To test the drives I used a StarTech SAT32MSAT257 mSATA to 2.5in drive convertor which was then connected to the SATA 6Gb/s port on the motherboard of one of my test rigs.

I also took power readings for the drives by using a meter on the wall socket to measure the complete system power usage with peak reading taken during a run of the Anvil’s Storage Utilities benchmark.Here, the idle figures are pretty much the same across the board, but you can see how when under load, being equipped with the Samsung 850 EVO takes an overall bigger draw than the Crucial MX200 or one of the slower CrystalDiskMark scorers, such as the seemingly eco-friendly Kingston mS200.Overall, the benchmark results show the more recent drives from Crucial and Samsung are the most consistent performers, with the CrystalDiskMark sequential write scores revealing where the others come unstuck. Transcend puts in a respectable showing as a good all-rounder and you get 6GB more for your money. If endurance is more important than speed, then alternatives such as the mS200 from Kingston should fit the bill. You won’t be lugging the 17-inch Satellite C70D around in your backpack very often, but there are still times when a larger screen comes in handy for tasks such as photo-editing, presentations or a bit of a Netflix binge at the weekend.

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