256GB HP EX920 M.2 PCIe NVMe Solid State Drive

Newegg via eBay
256GB HP EX920 M.2 PCIe NVMe 3D TLC NAND Solid State Drive
(2YY45AA#ABC) for
$ 52.99
Shipping is free
. Thanks iconian


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HP EX900 M.2 250GB PCIe 3.0 x4 NVMe SSD Drive is .99 on ebay via NewEgg too



Is there a significant difference in performance between the 2?
900 is DRAM-less. Typically this means less performance. But, I just read a good review from Tom’s Hardware:

Ex900 is without DRAM

Does anyone know a good pci to m2 nvme adapter? There are plenty, I know but wanted an experts opinion

Mailiya M.2 PCIe to PCIe 3.0 x4…
. It’s the one I am using, no problems, it’s just a simple passthrough adapter
Thanks.. Oos currently.. Wil keep an eye on it…. Already got the Samsung 860 evo ssd… Tempted to buy this with 10% eBay bucks too
Can check my

: the EX900 uses HMB (host memory buffer – system memory) instead of DRAM cache and uses a four-channel controller like the 660p rather than the EX920’s eight-channel.
I just bought this one but it hasn’t arrived yet…
As others stated however, the HP EX900 lacks DRAM making it a somewhat lower-performing model of NVMe. however while the 900 lacks DRAM it does have HMD (see:
) to compensate.


Performance wise, the EX900 reads at 2,100 MB/s vs. the EX920 with DRAM at 3,200 MB/s.


So there you have it. The 900 is still a fair improvement over SATA restricted SSDs, but not quite up to the level of performance found in those with DRAM.

Will this work with MacBook Air mid 2012 ? Trying to move up from a 64GB … thanks!

Jus curious… Won’t 16 lane adapter be more faster than a 4 lane adapter… Technically yes but would 4 lane be sufficient to utilize the max speed of the m2 nvme ssd itself?
Jus curious… Won’t 16 lane adapter be more faster than a 4 lane adapter… Technically yes but would 4 lane be sufficient to utilize the max speed of the m2 nvme ssd itself?

  • M.2 2280, HP controller offering with 8 flash memory channels that support PCIe 3.1 x4 and NVMe 1.3
  • Sequential Read/Write Speeds up to 3,200 MBps / 1,800 MBps, An industry top leading Reliability (MTBF) 2M hours, and Endurance (TBW) up to 400 TBW
  • Higher Order LDPC Error Correction for high speed parallel decoding and real time error correction to ensure data integrity and security
  • Works on all Windows PC, Full compatibility with HPdst.exe (HP Software Pre-installation Environment). Ideal upgrade for HP PCs
  • Manufactured to HP’s high quality standards and fully tested and certified in HP Laboratories. Not intended for use in HP Workstations

I never thought I’d be be buying or writing a review about a HP SSD, but it’s 2018 and here we are. I knew very little about the EX920 beforehand but I was in the market for a 1TB SSD and immediately went to the 960 EVO like everyone else in the market. However the 1TB 960 EVO was $450 at the time of this review. The HP Ex920 popped up for a paltry $370 for 1TB drive. I had to triple check all of the specs to make sure it was indeed a NVME drive or that there are no hidden issues that would come up. To my surprise, reviews for this drive are all very positive. Performance is on par with the 960 EVO and creeps up into 960 PRO category for certain performance metrics.

The chips themselves are Micron/Crucial 64-layer 3D TLC NANDs and the memory are NANYA chips. Both of these are leaders in the SSD/memory game. The controller is Silicon Motion SM2262, the same controller found in many brands of SSDs including Intel. On paper, the HP EX920 does many things right, 3200 reads, 1800 writes. To my surprise, my tests confirmed the specifications.

I honestly can’t find anything wrong with this drive. Packing was premium, the specs are good, and blazing speeds at $80 less than the leading player in the market. The SSD even has a tiny red LED on the chip to let you know it’s reading/writing like old hard drives used to do. This is a nice feature absent from many solid state drives. Helps let you know if your drive is working or not.

The only thing I would say is they should have included a heat sink to dispel heat. The 960 series for example, had a copper sticker on the rear to dissipate heat. I honestly don’t know if this drive has an overheating problem but consecutive tests don’t show a major decrease in performance so far.