# Your speed? WD BLACK SN750 **URL:** \ **Category:** WD\_BLACK | Blue | Red | Green | Gold SSD\ **Created:** [July 30, 2020, 8:14pm UTC](https://forums.sandisk.com/t/your-speed-wd-black-sn750/359598 "2020-07-30T20:14:49Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![Hermman](https://avatars.discourse-cdn.com/v4/letter/h/e9c0ed/32.png) [@Hermman](https://forums.sandisk.com/u/Hermman)\ **Post date:** [July 30, 2020, 8:14pm UTC](https://forums.sandisk.com/t/your-speed-wd-black-sn750/359598/1 "2020-07-30T20:14:49Z")
To friends who own the WD SN750. How is your product in terms of reading and writing speed? Can anyone have an average of 3,000 mb / s? I can only reach half of that and have tried everything. Looking at UserBenchmarks 1700mb / s it seems to be the average " Is that correct? > **[UserBenchmark: WDS100T3XHC-00SJG0 1TB](https://ssd.userbenchmark.com/SpeedTest/760914/WDS100T3XHC-00SJG0)** ---
**Author:** ![Cosara](https://avatars.discourse-cdn.com/v4/letter/c/a9adbd/32.png) [@Cosara](https://forums.sandisk.com/u/Cosara)\ **Post date:** [August 2, 2020, 12:58pm UTC](https://forums.sandisk.com/t/your-speed-wd-black-sn750/359598/2 "2020-08-02T12:58:54Z")
> [@Hermman](#): > > To friends who own the WD SN750. Nice, but does your motherboard support full speed of PCIE 3.0 x4 nvme drives? ---
**Author:** ![Hermman](https://avatars.discourse-cdn.com/v4/letter/h/e9c0ed/32.png) [@Hermman](https://forums.sandisk.com/u/Hermman)\ **Post date:** [August 2, 2020, 1:47pm UTC](https://forums.sandisk.com/t/your-speed-wd-black-sn750/359598/3 "2020-08-02T13:47:10Z")
Yes, i have support for M.2 PCIe x4 on the motherboard (TUF H310M-PLUS). ---
**Author:** ![Cosara](https://avatars.discourse-cdn.com/v4/letter/c/a9adbd/32.png) [@Cosara](https://forums.sandisk.com/u/Cosara)\ **Post date:** [August 2, 2020, 2:32pm UTC](https://forums.sandisk.com/t/your-speed-wd-black-sn750/359598/4 "2020-08-02T14:32:36Z")
Wow, looks good to me … the motherboard, not the performance of the SSD. I’m getting a sequential reading speed of 3524 MB/s and a write speed of 3225 MB/s with a Samsung 970 EVO Plus 1 TB SSD on a very simple Dell Optiplex 7070 SFF computer with a i7-9700 Intel CPU and 32 GB RAM-memory. No, it’s not a WD SSD, but that is just a personal choice after many small problems in the past with WD SSD drives. Samsung … better performance, better software, less troubles. ---
**Author:** ![Hermman](https://avatars.discourse-cdn.com/v4/letter/h/e9c0ed/32.png) [@Hermman](https://forums.sandisk.com/u/Hermman)\ **Post date:** [August 2, 2020, 2:38pm UTC](https://forums.sandisk.com/t/your-speed-wd-black-sn750/359598/5 "2020-08-02T14:38:56Z")
With your question, I got a coffee and researched the subject on this beautiful sunny Sunday morning. I found that my motherboard has the following specification “PCIE 2.0 x4 & SATA)”. I think I may have a problem here. ---
**Author:** ![Cosara](https://avatars.discourse-cdn.com/v4/letter/c/a9adbd/32.png) [@Cosara](https://forums.sandisk.com/u/Cosara)\ **Post date:** [August 2, 2020, 4:02pm UTC](https://forums.sandisk.com/t/your-speed-wd-black-sn750/359598/6 "2020-08-02T16:02:07Z")
> [@Hermman](#): > > I found that my motherboard has the following specification “PCIE 2.0 x4 & SATA)”. > > I think I may have a problem here. Yep … I was not looking good to the specifications. 1 x M.2 Socket 3, with M Key, type 2242/2260/2280 storage devices support(both PCIE 2.0 x4 & SATA mode)\*1 4 x SATA 6Gb/s ports (gray), ---
**Author:** ![Marty2](https://avatars.discourse-cdn.com/v4/letter/m/a88e4f/32.png) [@Marty2](https://forums.sandisk.com/u/Marty2)\ **Post date:** [August 5, 2020, 5:51am UTC](https://forums.sandisk.com/t/your-speed-wd-black-sn750/359598/7 "2020-08-05T05:51:31Z")
> [@Hermman](#): > > I found that my motherboard has the following specification “PCIE 2.0 x4 & SATA)”. > > I think I may have a problem here. You found your bottleneck. The [specs](https://www.asus.com/us/Motherboards/TUF-H310M-PLUS-GAMING/) say: > With x4 PCI Express® 2.0 bandwidth, M.2 supports up to 20Gbps data-transfer speeds. At 1700mb / s you pretty much maxed out the the PCIE 2.0 x4 lanes. (I suppose the missing 300mb / s are used by data framing overhead\* (headers etc.).) You might as well have bought yourself a lower spec’ed NVMe SSD. Ah well, might you ever upgrade to a new MB then your SSD is up to it. In the specs I do see a: > 1 x PCIe 3.0/2.0 x16 (x16 mode) If it’s not in use (by a discrete video card), you might add a 4 lanes M.2 to PCIe converter card to put your NVMe drive in order to enjoy its full speed. ([This one](https://www.aliexpress.com/item/32852278967.html) works good and costs little.) \* `To determine the actual amount of data that can be transferred, the encoding technique must be understood. PCIe Gen 3.0 and PCIe Gen 4.0 use a 128b/130b encoding technique. Older generations such as PCIe Gen 2.0 use 8b/10b encoding. This encoding technique (PCie 4.0) transforms 128-bit data into 130-bit line code. This allows for reasonable clock recovery (which is the process of extracting timing information from a data stream) and ensures alignment of the datastream.` [Source](https://www.onlogic.com/company/io-hub/your-ultimate-guide-to-understanding-pcie-4-0/) For PCIe 2.0: 5GT/s \* (8b/10b) = 4.000Gbps 4.000 Gbps / 8 b/Byte = 500 GB/s (per lane) Overhead: ([10b-8b]/10b)\*100 = 20% ---
**Author:** ![Hermman](https://avatars.discourse-cdn.com/v4/letter/h/e9c0ed/32.png) [@Hermman](https://forums.sandisk.com/u/Hermman)\ **Post date:** [August 5, 2020, 9:07pm UTC](https://forums.sandisk.com/t/your-speed-wd-black-sn750/359598/8 "2020-08-05T21:07:54Z")
Hi, Marty. Exactly. I took it out of my computer and put it on my Dell I5, which has PCIe 3.0. Using Crystal the SSD reached the reading speed of 3500mb without any problem. I was unlucky enough to buy the only motherboard (TUF H310M-PLUS) which is PCIe 2.0 haha. It is a recent card, but they are rare on the market, costing the same price as other 3.0. I believe that this problem that I had will be increasingly rare. Thanks to all friends for the topic. ---
**Author:** ![SdeGat](https://sea2.discourse-cdn.com/sandisk/user_avatar/forums.sandisk.com/sdegat/32/50986_2.png) [@SdeGat](https://forums.sandisk.com/u/SdeGat)\ **Post date:** [January 10, 2022, 8:00pm UTC](https://forums.sandisk.com/t/your-speed-wd-black-sn750/359598/9 "2022-01-10T20:00:46Z")
Just found this thread when doing a search for UserBenchmark. Like you @Hermman, I am getting top performance on Crystal benchmark and around 1800 on UserBenchmark. 😕 How can there be that much difference? Which one is right? 🤷🏻