B450M Pro4 NVMe M.2 SSD Speed
Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=12353
Printed Date: 18 Jul 2025 at 7:21pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: B450M Pro4 NVMe M.2 SSD Speed
Posted By: Dusee
Subject: B450M Pro4 NVMe M.2 SSD Speed
Date Posted: 02 Sep 2019 at 3:08pm
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Hi I have a Silicon Power P34A80 PCIe Gen3x4 M.2 NVMe SSD 256GB, this drive should reach around 3200MB/s read, 3000MB/s write sequential. The read speeds are OK (3200MB/s), but the max write speed is 1000MB/s in my case (tested with ATTO). My config: B450M Pro4 Ryzen 5 2600 2x8GB 3200MHz Team Group T-Force Delta RGB Win 10 Pro 64bit BIOS 3.50 Every driver is updated to the latest, the SSD installed in the correct slot, in the BIOS the link is set to Gen3. What can I do to reach higher write speeds? Thanks! |
Replies:
Posted By: kschendel
Date Posted: 03 Sep 2019 at 10:32am
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3GB/s write speed would be pretty impressive for any SSD. Who claims these rates? I'm not sure I can hit that with a 970 Pro, which is one of the fastest writing prosumer SSD's available. It may be that the 3 GB/s figure is only valid for very specific conditions, like staying within write cache or something. |
Posted By: Dusee
Date Posted: 03 Sep 2019 at 5:02pm
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I know that, but it never exceeds 1000MB/s, like it is fixed to that value. Review: https://www.tomshardware.com/reviews/silicon-power-p34a80-pcie-gen3x4-m-2-nvme-ssd,6180-2.html In the sustained sequential test You can see that if the cache is full it throttles to 1000MB/s, but in my case it didn't happened, cause an ATTO or CrystalDiskBenchmark doesn't write that much data. Is there a setting/trick in Windows which You have to enable to use the write cache, it is not enabled by default? |
Posted By: gizmic
Date Posted: 03 Sep 2019 at 6:47pm
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atto and crystaldisk is enough to flood cache i know this because i can sometimes get 700MB/s on write seq q32T1 on 970 evo but i know it goes back to 24XXMB/s when i diable razer synapse + asrock rgb ------------- 
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Posted By: Dusee
Date Posted: 04 Sep 2019 at 4:17pm
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Tested a few things, the only one that helped was if I turned off the Direct I/O in ATTO, after that I reached ~3000MB/s write speed, but the read speeds gone up to almost 6000MB/s, which is non-sense. Tried to turn off the RGB, it did nothing in my case, checked the Windows settings regarding write cache, everything was okay by default. |
Posted By: Ray62
Date Posted: 08 Sep 2019 at 1:30am
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Everything is ok with your SSD. If you want real 3000MB/s write speed, you have to use the 1 TB version. Silicon Power P34A80: Silicon Power PCIe M.2 NVMe SSD M.2 1TB Gen3x4 R/W up to 3.400/3.000MB/s Silicon Power PCIe M.2 NVMe SSD M.2 512GB Gen3x4 R/W up to 3.400/2.300MB/s Silicon Power PCIe M.2 NVMe SSD M.2 256GB Gen3x4 R/W up to 3.100/1.100MB/s Geman site, but look at the pictures, it's the P34A80 https://www.amazon.de/Silicon-Power-Gen3x4-1-100MB-Interne/dp/B07P8KXX4B?th=1 ------------- Asrock Fatal1ty X370 Professional Gaming Offline Under test: MSI X570_MEG_ACE | AMD Ryzen 9 3900X | Scythe Mugen5 | 2x16GB F4-3200C14D-32GTZ@3466 | ASUS GeForce GTX 1080 Ti FE |
Posted By: Dusee
Date Posted: 08 Sep 2019 at 7:06am
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Oh, thats sad. The store I bought it from and the Silicon Power website stated the same speeds for all the capacities. Thanks for the clarification. |