steve1977 Posted July 14, 2019 Share Posted July 14, 2019 I am thinking to buy one of the two NVMEs. 2TB version. Samsung more than twice the price. I will use the NVME as unassigned device with VMs on it (using 100% of the disk space for the VM vdisk). VMs are Windows for gaming. Curious whether I can save some money here or better to spend on the Samsung? Quote Link to comment
JorgeB Posted July 14, 2019 Share Posted July 14, 2019 Intel is QLC, hence the price difference, sustained writes drop to 100MB/s once small SLC cache is full, if it's still a good option depends mostly on the use case. Quote Link to comment
steve1977 Posted July 14, 2019 Author Share Posted July 14, 2019 Thanks. I'd done some reading on QLC and wasn't clear whether this is an issue for my use case. One issue seems to be that I am planning to use 100% of the NVME capacity (as vdisks will use 100%). I actually need this space. While I didn't fully understand what the issue is, it seems from my reading that QLC does not work well if full capacity used? Dropping to 100MB/s shouldn't be an issue for my use case (largely for gaming), isn't it? Quote Link to comment
JorgeB Posted July 14, 2019 Share Posted July 14, 2019 Main difference is that QLC is much slower for writes than the 3D TLC used on the Samsung, usually also has less endurance. Quote Link to comment
steve1977 Posted July 14, 2019 Author Share Posted July 14, 2019 Thanks! How does QLC compare to good old SSD disks? Does the writing speed impact gaming? And lastly, running a QLC at 100% capacity (via vdisk) is not a show-stopper, is it? It's $200 vs $500 for 2TB, so worth the consideration. Quote Link to comment
JorgeB Posted July 15, 2019 Share Posted July 15, 2019 On 7/14/2019 at 8:33 AM, steve1977 said: How does QLC compare to good old SSD disks? Google some benchmarks and you can see for yourself. Quote Link to comment
steve1977 Posted July 15, 2019 Author Share Posted July 15, 2019 Thanks. Did some googling and didn't get comfortable with the cache issue and also concerns on endurance. I went ahead with the middle way (760P). Seems to be running fine so far. Quote Link to comment
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