Sandisk Z400s 128GB Solid State Drive (2.5”, SATA 3.2 6GB/s, 128GB Capacity)

I installed this on my personal desktop PC as the primary boot drive and it really makes a BIG difference on boot time, application startup times and greatly speeds up any read/write functions. My PC is one that I built a few years ago and is (or was) fairly beefy with 12 gigs of RAM, an AMD quad core 3.3ghz CPU and around 3TB of hard-drive space. I was using a 1.5TB 7200rpm drive as the boot drive which I thought booted up fairly quick. When I installed this new 128GB Z400S SSD my boot time now is about 10 times faster! I can get to my desktop in about 12 to 15 seconds now after turning it on.I installed Windows 10 as the OS and it is very responsive. I am also running a Windows 7 Virtual machine using VMware in Unity mode. On the old hard-drive the VM was really too slow to use but now with this Sandisk SSD it runs very smooth. I use windows 7 Media Center VM to record TV shows from a USB TV tuner. It records and plays back just fine now where before it was jittery. I can highly recommend this SSD.

Installed for a few days as of writing this. I replaced a 3500 rpm hard drive. The speed may not be the top of the line on this SSD but it crushes the platter based HDD. I use an ACER Aspire 5742 PEW71 with a 2.0 dual-core intel pentium CPU and 8Gb of RAM with windows 7 home premium. Boot up is as fast as I think it could get unless the OS logo video can play quicker b/c as soon as the windows logo gets done flashing on the screen, BAM! Your at the login screen. It only takes about 10sec for the wifi to connect and your ready to go. I haven't really had a chance to see if this drive will increase my laptop's battery life. So far the first night I unplugged it and it still states my general max life time of 2hrs but I didn't get to run it out with a timer going to verify. I didn't expect it to run as quickly as it is so for this price unless you do some heavy gaming or need more space this will give your older system a turbo boost. I can't say for windows 8 and I would caution anyone who hasn't installed 10 to avoid it like the plague until they really work te bugs out as I've noticed people said they had issues with this drive on windows 10.

I put Windows 10 on this thing and have been able to run my Desktop Computer with it as the OS Drive still have over 80 GB of Free Space Remaining after installing messenger apps and other basic programs on the same drive. It DOES go down to way lower amount of Free Space remaining, like 30 GB left or so, whenever I record raw game capture footage with OBS or download a lot of YouTube videos at once in between moving them over to my "entertainment media" drive(s)/folder(s).They say you're not supposed to do video capture on a solid state drive-- I should probably do more to follow that advice-- but I haven't run into any noticeable file corruption or slowness thus far. Had it since summer of 2016, works like a dream. Still runs as smoothly as when I first installed it, or if it hasn't, I certainly haven't been able to notice.

Drive came OEM installed on a Dell Inspiron 15 5559 from Staples. It's faster than a standard hard drive, but when I replaced it with a Samsung EVO 250GB drive and optimized it using Samsung Magician software, it tested out several times faster than this SanDisk drive. Understandable, since the Samsung EVO 128GB is twice the price. Sometimes you really do get what you pay for. I've attached photos of the Crystal Disk 5 comparative speed tests.