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Samsung XP941 MZHPU512HCGL - solid state drive - 512 GB - PCI Express 2.0 x4

4.7 out of 5 stars 13 customer reviews
| 28 answered questions

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  • Form Factor:M.2
  • Capacity:512 GB
  • NAND Flash Memory Type:Multi-level cell (MLC)
  • Height:80 mm
  • Depth:4 mm

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Product Information

Technical Details
BrandSamsung
Item Weight59 g
Product Dimensions9 x 7 x 0.5 cm
Item model numberMZHPU512HCGL-0004
  
Additional Information
ASINB00J9V521S
Best Sellers Rank 77,660 in Computers (See top 100)
Shipping Weight59 g
Date First Available26 Mar. 2014
  
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Product Description

Compatible Bays:1 x internal - M.2, Interfaces:1 x PCI Express 2.0 x4 - M.2 Card, Drive Transfer Rate:1400 MBps (external), 4KB Random Read:122000 IOPS, Internal Data Rate:1170 MBps (read) / 930 MBps (write), Maximum 4KB Random Write:72000 IOPS, 4KB Random Write:72000 IOPS, Power Consumption:5.8 Watt ( active ) ¦ 80 mW ( idle ), Non-Recoverable Errors:1 per 10^15, MTBF:1,500,000 hours


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Customer Reviews

4.7 out of 5 stars
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Top Customer Reviews

Size: 512GB Verified Purchase
I bought this M.2 SSD to go in my New X99 system. The X99 motherboard allows me to boot off the XP941 and after running some Disk speed test i get an average of 1092 mb/s transfer rate.

The Drive is very very quick.....

Perfect for a boot drive
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Size: 256GB Verified Purchase
PCIe x4 is meant to nearly double the speed of SATA which seems to put limit to SSD speed. And this item (as far as I know) is the only M.2 PCIe x4 available to consumers. I know the true speed of PCIe x4 is not really realised by this as it still uses AHCI rather than NVMe (or thats what I read!) but its still very very fast. I can get to WIn7 log-on screen from boot in 5 or second.

But I am very worried about the temperature it gets up to. I have seen a youtube clip where ran test and the temperature of this went up to 113 degrees! I do not have temperature sensor for XP941 but the surrounding gets very hot! I will invest in some thermal gap fillers to help keep the temperature low as possible. I think it is best to avoid installing programs that uses file systems a lot like a game as this will increase the temperature of the drive and probably reduce its life expectancy.

If you are a patient type, maybe, its better to wait a bit to see what other competitors bring out (or what Samsung brings out) before investing in this. Price is quite high too since its quite new tech I guess, although the components it uses are pretty much same as other SSDs.
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Size: 256GB Verified Purchase
The performance is exceptional.

Write speeds are a healthy 820MB/s and read is 1050MB/s.
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Size: 512GB Verified Purchase
It is super fast and bootable with my ASUS X99-E WS, but you have to setup your bios correctly

http://www.tomshardware.co.uk/answers/id-2351476/windows-booting-problem-ssd-asus-x99.html
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Size: 512GB
I tested this on a pre-production laptop - that though not "new" it is many months old; you would expect many top-end laptops to be have been already launched with support for M.2/NGFF PCIe SSD support - but alas we're still stuck with SATA. This is sad as Apple again pushes the envelope with its laptops having used (proprietary) PCIe SSDs for over 1 year.

It seems like NGFF slots in laptops either support SATA (vast majority) or PCIe; thus forget about buying a laptop with NGFF SATA SSD (e.g. Lenovo X1 Carbon) and buying a NGFF PCIe SSD to upgrade it - you are stuck with SATA! In effect we're not in a better position than with mSATA - if anything many slots would either take a mSATA SSD or a PCIe WWAN card - so in effect you have a better chance to upgrade to a PCIe mSATA SSD than to a PCIe NGFF SSD!!!

Note that unlike the Plextor 6e - the XP941 does NOT have boot support, it needs a BIOS that can boot off PCIe SSD. So a dumb NGFF to PCIe adaptor will not make your desktop boot off it - but you can use it as storage/scratch/cache, etc. booting off something else.

The XP941 masquerades as a SATA controller+SATA SSD to an OS, but that is only for compatibility with OS/drivers. It can thus use the generic SATA AHCI drivers without any changes - effectively virtualised SATA AHCI. Thus no driver needed nor utility - sadly Samsung's own Magician does NOT support it.

To reduce power, the laptop had the NGFF slot set to Gen1 PCIe - to save power - thus the XP941 benchmarked at 700MB/s - much slower than expected. After looking in the BIOS and setting Gen2 PCIe (aka 5Mbps link, x4) the scores jumped to the rated 1.2GB/s read, 900MB/s write - and good increase in IOPS. This is 2x or higher than what a SATA3 NGFF SSD would score.
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Size: 512GB
I was able to use this as a boot drive on a Maximus VII impact with no issues whatsoever. No extra BIOS settings required, just installing windows 8.1 from a UEFI USB key. My 780 now only operates at x8, to negligible effect, while the xp941 chugs along happily at it's full x4 speed.
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Size: 256GB Verified Purchase
Very fast but hads initial problems installing Windows 7. needed to copy Shell64x.efi to root of drive. wonderful !!
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