Samsung SM951 NVMe M.2 SSD (950 PRO) vs EVO – Hot or Not!!!!! Review just in time for Christmas.


High on the Christmas list this year has to be one of the latest Samsung PCIe SSD M.2 Drives!

The SM951 PCIe NVMe is undoubtedly one serious speed demon! Just look any any test or review to see the bench marks!

This was my system UserBenchmark before and after the installation of the drive!!!!!!!!!!!!!!



BUT in real terms what does that mean for your actual user experience.

Here i give me honest opinions of the 256GB (MZVPV256) version installed in my i7 5820K @4.5GHz GA-X99-SLI system running Windows 10 for content creation.

Allot of reviews have said it’s a product the manufacturers are drip feeding into the market and mostly in OEM builds so they don’t want the mass market to get hold of them just yet… nothing like a bit of stealth marketing to build the hype!

I’ve used this drive as a boot drive in both Windows 7 and Windows 10, a dedicated scratch disk for Adobe CC Aftereffects, Premiere caching, project disk for Devinci Resolve 12 all coming to the same conclusion.

As a side note.
Windows 7 does not support NVMe without a hotfix applied which on the surface isn’t a problem just install it! however… if you want to create a bootable NVMe drive using Windows 7 fresh install this is where the problems arise!, there are ways to do it but its far easier to fresh install on anther AHCI drive, apply the hotfix then clone onto the SM951 NVMe drive.

(Window 7 Hotfix for NVMe support):

Free drive clone tool:

Blog post on this video:

Hope you find this review useful.

Thanks for watching.


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  1. Spiggle 13 July, 2020 at 01:12 Reply

    I pretty much guessed this anyway just looking at other reviews, if you have a decent SSD like Samsung 830, 840 or later then you don't need one of these M2 drives, i think they only benefit huge file transfers anyway. For the small 4k writes there won't be much in it, so system performance and game loading etc.. there will hardly be any difference, you might get 1-2 seconds quicker loading a game and that's it. This is definitely not a good upgrade if you're looking for more speed.

  2. Snoitseuq Pi 13 July, 2020 at 01:12 Reply

    How the prices have changed! I bought 250gb mlc 250 pcie 3 x4 for 144 CAD. Meh, I don't notice a great improvement, but I didn't expect to either. They are very use case specific devices. Also, putting them in RAID is really what they are created for. There are enterprise solutions that use 4 nvme x4 cards on 1 x16 pci-e card with on board raid controller. All about the use case.

  3. Ludovicescu Constantin 13 July, 2020 at 01:12 Reply

    I can use samsung OEM SM951, M.2, 256GB, PCIe model:MZ-HPV2560 with asus p8 z77 v premium for boot Windows 10
    thank you

  4. 13 July, 2020 at 01:12 Reply

    hey thanks – you just saved me some money on my laptop. i have an 840 pro already and it sounds like i'd be spending a bunch of money to not notice anything on one of these.

  5. Mohammed Aliyu 13 July, 2020 at 01:12 Reply

    The reason there is little difference is the random 4k read speeds are pretty much the same. The large sequential speeds don't make that much of a difference in tasks like loading games and large programs with many small files.

  6. VFX Ltd™ 13 July, 2020 at 01:12 Reply

    I think i'll stick with 1TB EVO 850 . Im ALWAYS fretting about HDD space on my old 1TB pc. It's so annoying. Since ill be using dozens of VFX software such as AE, 3dsmax, Realflow, fumefx, zbrush etc itll fill up really fast.
    500Gigs – windows- Page file =400gb left..? That would be half full already. But how much ssd space does RAM use up? Ive got 64 gb of ram. It would be a shame if it takes up 64-128gb of ssd space..

  7. Sooka 13 July, 2020 at 01:12 Reply

    I agreed on you.
    I had those drives and I also install a DIY pc for my friends.
    Once your system already fast with your current SATA SSD, you will not noticed any different by replacing the M.2 PCIe.

  8. YataLock 13 July, 2020 at 01:12 Reply

    Thank you for this video! I was on the fence, but decided just to order a sata m.2 ssd for my new skylake system.

  9. Roy Korpel 13 July, 2020 at 01:12 Reply

    How about Photoshop and big PSD files? I am on the edge of building a new monster work horse to power my big digital paintings and image manipulations. I am thinking about the 950 pro 512gb or the 256gb. It will be used for OS and programs and scratch. Al my workfiles will be stored on a 1GB SSD (Crucial MX300). Any thoughts?

  10. Yaghiyah Brenner 13 July, 2020 at 01:12 Reply

    The review needs to be use case specific, boot up time is NOT a reference measurement, also without numbers and evidence its really hard to take this seriously.

  11. TCPUDPATM PORTS 13 July, 2020 at 01:12 Reply

    I am curious to see if the story changes at all when we talk about about load times in modern games, when the computer seems to be doing a lot of reading of large data files to load textures. The SM951s are significantly cheaper now too.

  12. Rodney Rogers 13 July, 2020 at 01:12 Reply

    Great video, really good perspective. Guess this is a buy if you have to have nvme. If you have a good ssd no rush. thanks

  13. Sarrum Gilgamesh 13 July, 2020 at 01:12 Reply

    Thank you very much for the honest review. I just built a new rig and I was itching to buy a nvme because <.< >.> well reasons… your review smacked some sense into my thick skull.

  14. xParesh 13 July, 2020 at 01:12 Reply

    fascinating review, thank you! I was amazed by mechanical to SSD speeds and was hoping this would be the same leap but in the entire computer processing chain, the Hard drive is no longer the weakest link. For what it's worth I think you'll find your NVME disk is by far and away the most future proof component in your system. So now we need the other components to catch up. I recently bought an ultrabook with a fast SSD but was always regretting not buying one with a NVME. For me, the boot/load times were critical so a 75% reduction in time would have had me jumping to a newer machine. The fact that I'd be saving fractions of a second assure me that in real terms use my ultrabook is perfectly fine and future proof. In 5 or so years when buses, IO systems, processors, memory have caught up then NVME and its newer incarnations should shine.

    All in all a fascinating video, thank you for taking the time.

    It would be great if you could run some direct comparisons, such as boot time, app load time, file transfer time between SSD and NVME systems. I dont think anyone else has done this on youtube and it would be great to see real vs theoretical results.

  15. Lucio Praude 13 July, 2020 at 01:12 Reply

    nice and honest review. It´s really a tease getting the 950, but for the average joe on a daily use, might as well get a 850 m.2 for half the price, Thanks

  16. David Vollandt 13 July, 2020 at 01:12 Reply

    The benefit is there if you regularly perform tasks long running tasks that are storage io bound. This is the case for me. As a software developer I do load/build/run tasks on large projects throughout my work day wold that take 1-3 minutes. the 950 pro has cut the duration of these tasks in half or better. The productivity boost was significant.

  17. 2Fast4Mellow 13 July, 2020 at 01:12 Reply

    This is a mistake that so many people make. The seek times between the 850 pro drives and the sm951/950 pro are about equal. However the transferspeed is far better than the 850 pro. Large (sql/nosql) databases can benefit greatly from an M.2 drive.

    All the drivers than needs to be loading during Windows boot are small files, so little to nothing to gain there. When using something like Photoshop/Premiere is is not the drive that is the limiting factor, but the CPU/GPU combination. Scene rendering is a complex task, pretty much all desktop aren't capable of generating more than 400MB/s of files, and therein lies the problem..

    The 850 pro and evo drives have in general about the same performance. The pro gets a slight advantage when the drives becomes full..

  18. Steve DiCe 13 July, 2020 at 01:12 Reply

    Got myself an asus z97i plus, tiny itx board that has an m.2 port on the backside and only uses HALF of the potential that the Samsung nvme 951 128gb has. First I thought, it's a shame that only 2x is used instead of 4x, and also that I was stupid enough to try it.Well, it works amazingly well!!At first I also was checking online if other people had experience or tried it, but sept. 2015 I couldn't find much information, those who tried had problems with the AHCI, or whatever…. Just nothing but problems, bios didn't recognize, whatever that could go wrong, didn't work.Now I think, I have to stop reading those forums too much, or at least the replies of any moron out there !!I'm sure I got lucky also, if I was a few months sooner, my bios wouldn't be updated for it.
    But the speeds, the iops, are still twice as fast!!And I have crucial mx200 ssd's, sandisk ssd's, they're fast, but nowhere near my little board on the backside.Just 1 downside, it can get hot, but fixed it with a few large heatsinks.
    My conclusion: eventhough only halve bandwith can be used, just try it. The samsung nvme 951.It can allways serve later maybe full bandwith on your next mainboard.

  19. tommywho924 13 July, 2020 at 01:12 Reply

    As everyone else has said, thanks for your review, you saved me sum money I plan to allocate somewhere else. I've been looking for something that compared NVME to SATA and have had a hard time finding it. The results of this video is probably why. I like the small form factor and lack of cables but like everyone else, this isn't enough to hop on the hype train until the price comes down. Thanks Again!

  20. R A 13 July, 2020 at 01:12 Reply

    Thank you very much for an honest 'real life' comparison. Sick of benchmark results. I've been adding the 950 Nvme in to my cart on Amazon and paying for it and cancelling it this weekend about 5 times now, it's driving me mad. I have promised myself that I will stick to the 850 Evo as it's on offer and with the saved money i've snagged an additional 32GB DDR4 RAM.

  21. pstoianov 13 July, 2020 at 01:12 Reply

    It all depends on the load. In your case it's not improvement but in case of lots of I/O intensive apps this nvme makes huge difference. Also, there is a difference between AHCI & nVME…

  22. ADHD daila-lama 13 July, 2020 at 01:12 Reply

    thank you. I was considering buying the pro for 65 euro's more, but now I know it doesn't improve the system much I'm not going to do it.

  23. Rob Bianchi 13 July, 2020 at 01:12 Reply

    I bought the 256Gb and a PCIe 4x adapter, it works fine even on my old X58 motherboard, I can boot from the SM951 (AHCI version) and it's very fast 😉 GA-X58A-UD7 rev.1 running Mac OS X El Capitan.

  24. BCNEWSVIDEO 13 July, 2020 at 01:12 Reply

    Great info from everyone. I also couldn't find any info about how it would effect my daily use. The majority of any process on your computer is going to handled mostly by your cpu. If your doing video editing, a high-end video card, would probably yield better results than a faster hard drive. That being said, the Samsung 950 nvme m.2 ssd would probably be better suited for a server, or moving large files around to another compatible drive. I don't think the benifits, out way the price. I wonder if performing a virus scan, or trying to load 5000 thumbnails would take advantage of this ssd. I do plan on buying a 950 pro 512 gb for my new computer, becauseI want to future proof it and deal with lots of 4k videos & pictures.

  25. Mr. Gambini 13 July, 2020 at 01:12 Reply

    Good honest review. I'm about to upgrade my rig to X99 and I was itching to use the m.2 on my asus sabertooth motherboard as a boot drive with the Samsung 950 pro 256 gb. I think I'll stick with the good ol 850 evo and save some money. Maybe I'll save up to get an Intel 750 down the line as my work/editing drive. Again thanks for the review good to get a second opinion on things.

  26. Luca Miolla 13 July, 2020 at 01:12 Reply

    Pretty much a useless review…what did you expect, an improvement on CPU intensive programs?
    No tests on gaming or everything that would really benefit from drive performances, you're just pointing out the obvious, it's your mistake buying an even faster SSD for general use purposes

  27. Топовый Инженер 13 July, 2020 at 01:12 Reply

    thank you for helping me to take right decision not to change my ssd. I've heard what I thought myself: there will no critical difference between SSD and m.2 ssd in daily use programs. Thank you for saving my money =)
    From Russia with respect

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