Hello! I am encountering something rather bizarre after fully rebuilding my system today and am wondering if anyone has seen this before. Basically, one of my primary SSDs has become absurdly slow. I was trying to transfer some data off of this SSD onto my new NVME drive, and I am getting ~700 KB/s (yes, KB) transfer speeds, even for large files. I tried to transfer 85 GB of data off of the drive (mix of large files and small), and after letting it run for 2 hours it was ~5% complete with an estimated time remaining of over 24 hours.
I ran CrystalDiskMark and my read speeds on the SSD appear to be the problem:
Note that I have another SSD connected to this same machine which is functioning perfectly well. The drive was working totally fine before I did my rebuild, so I'm assuming that I just did something stupid or need to set a random BIOS setting somewhere or something. I should note that I am a bit of a novice when it comes to building PCs. I've swapped out individual parts plenty of times, but this is only my 3rd full build ever.
I am using mostly default settings in the BIOS at this point. The only thing I changed was enabling legacy mode so that the BIOS would recognize my SSD as a boot device. Otherwise, everything booted up just fine, and the read speed of this drive seems to be my only issue.
The motherboard has 4 SATA ports and I am using all 4 (2x SSD, 1x HDD, 1x DVD rom drive). They all seem to be the same and are all marked as 6Gb/s ports. The manual of the motherboard doesn't mention any differences, so I'm assuming it doesn't matter which port each drive is using.
So far I have tried:
SanDisk SDSSDHP 128 GB Sata SSD (this drive is working great, and is my boot drive - Windows 10)
Samsung 870 QVO 1TB SSD (this drive is my problem)
1x HDD (unsure on the model and I don't think it's relevant)
1x DVD ROM drive (don't judge me lol)
EVGA 80 Plus Bronze 850W Power supply
Parts new to my build as of today:
G.Skill Ripjaws V Series 32 GB DDR4 RAM (2x 16GB)
ASUS Prime Z690-P D4 LGA 1700 Motherboard
Intel Core i7-12700K LGA1700 CPU
Zotac Gaming GeForce RTX 3070 Twin Edge OC White Editiion 8GB GDDR6 256-bit PCIE 4.0 GPU
Western Digital 500 GB Blue SN570 NVMe SSD
So, does anyone have any ideas as to what I could try to fix the drive speed? TIA!
I ran CrystalDiskMark and my read speeds on the SSD appear to be the problem:

Note that I have another SSD connected to this same machine which is functioning perfectly well. The drive was working totally fine before I did my rebuild, so I'm assuming that I just did something stupid or need to set a random BIOS setting somewhere or something. I should note that I am a bit of a novice when it comes to building PCs. I've swapped out individual parts plenty of times, but this is only my 3rd full build ever.
I am using mostly default settings in the BIOS at this point. The only thing I changed was enabling legacy mode so that the BIOS would recognize my SSD as a boot device. Otherwise, everything booted up just fine, and the read speed of this drive seems to be my only issue.
The motherboard has 4 SATA ports and I am using all 4 (2x SSD, 1x HDD, 1x DVD rom drive). They all seem to be the same and are all marked as 6Gb/s ports. The manual of the motherboard doesn't mention any differences, so I'm assuming it doesn't matter which port each drive is using.
So far I have tried:
- Updating motherboard BIOS to the latest version
- Updating the firmware on the SSD in question
SanDisk SDSSDHP 128 GB Sata SSD (this drive is working great, and is my boot drive - Windows 10)
Samsung 870 QVO 1TB SSD (this drive is my problem)
1x HDD (unsure on the model and I don't think it's relevant)
1x DVD ROM drive (don't judge me lol)
EVGA 80 Plus Bronze 850W Power supply
Parts new to my build as of today:
G.Skill Ripjaws V Series 32 GB DDR4 RAM (2x 16GB)
ASUS Prime Z690-P D4 LGA 1700 Motherboard
Intel Core i7-12700K LGA1700 CPU
Zotac Gaming GeForce RTX 3070 Twin Edge OC White Editiion 8GB GDDR6 256-bit PCIE 4.0 GPU
Western Digital 500 GB Blue SN570 NVMe SSD
So, does anyone have any ideas as to what I could try to fix the drive speed? TIA!