Jump to content

Drastic Reduction in SSD Write Performance

Greg136
 Share
Posted

The first performance benchmark (using Samsung Magician) I did on my 1TB Samsung 870 QVO SSD was very promising, 549MB/s sequential read & 505MB/s sequential write. This was soon after the new SSD was installed and successfully cloned the OS and about 600-700GB of files. The old HDD was disconnected, so the only storage device plugged in was this SSD.

 

Running the same benchmark today, there is a slight reduction in read speed and a HUGE reduction in write, as well as random read falling. Interestingly, random write has stayed the same.

 

Screenshot(332).thumb.png.a245a58282bca698956b90afd13d9053.png

 

What I've changed since the first benchmark

  • GPU upgrade from GT 710 to RTX 2070 super (along with new PSU)
  • additional storage device added: 2TB WD Blue WD20EZRZ HDD

What I've tried

  • unplugging the 2TB HDD and redoing the test - no improvement, we can rule out that option.

 

Is the new GPU responsible for the write speed falling so much? What can I do to get the speed back up?

 

System Info

Dell OptiPlex 7010

Intel Core i7-3770 3.4 GHz

Samsung 8GB (2x4GB) DDR3 1600 MHz RAM (dual channel)

Zotac RTX 2070 Super Mini

Windows 10 Pro 22H2 64-bit

 

Huge thanks in advance for any reply & assistance.

 

 

Link to comment
https://linustechtips.com/topic/1521145-drastic-reduction-in-ssd-write-performance/
Share on other sites
Link to post
Share on other sites
Posted

SSD-s drop in speed significantly if they are nearly full, especially if TRIM is disabled or hasn't been done for a long time.

 

Do Disk Cleanup (built-in WIndows tool), then go to Disk Defragment and optimize the drive. Retest.

M.S.C.E. (M.Sc. Computer Engineering), IT specialist in a hospital, 32+ years of gaming, 20+ years of computer enthusiasm, Geek, Trekkie, anime fan

  • Main PC: AMD Ryzen 7 5800X3D - EK AIO 360 D-RGB - Arctic Cooling MX-4 - Asus Prime X570-P - 4x8GB DDR4 3200 HyperX Fury CL16 - Sapphire AMD Radeon 6950XT Nitro+ - 1TB Kingston Fury Renegade - 2TB Kingston Fury Renegade - 512GB ADATA SU800 - 960GB Kingston A400 - Seasonic PX-850 850W  - custom black ATX and EPS cables - Fractal Design Define R5 Blackout - Windows 11 x64 23H2 - 3 Arctic Cooling P14 PWM PST - 5 Arctic Cooling P12 PWM PST
  • Peripherals: LG 32GK650F - Dell P2319h - Logitech G Pro X Superlight with Tiger Ice - Madlions MAD 68HE Pro - EndGame Gear MPC890 - Genius HF 1250B - Akliam PD4 - Sennheiser HD 560s - Tripowin Vivace - Simgot EM6L - Truthear Zero - QKZ x HBB - 7Hz Salnotes Zero - Logitech C270 - Behringer PS400 - BM700  - Colormunki Smile - Speedlink Torid - Jysk Stenderup - LG 24x External DVD writer - Konig smart card reader
  • Laptop: Acer E5–575G-386R 15.6" 1080p (i3 6100U + 12GB DDR4 (4GB+8GB) + GeForce 940MX + 256GB nVME) Win 10 Pro x64 22H2 - Logitech G305 + AAA Lithium battery
  • Networking: Asus TUF Gaming AX6000 - Huawei OptiXstar EG8145X6-10 - 1000/500 Mbps fiber optic Internet access
  • TV and gadgets: TCL 50EP680 50" 4K LED + Sharp HT-SB100 75W RMS soundbar - Samsung Galaxy Tab A8 10.1" - OnePlus 13 16GB/512GB - OnePlus 9 256GB - Olymous Cameda C-160 - GameBoy Color - Miyoo A30 Spruce
  • Streaming/Server/Storage PC: AMD Ryzen 5 3600 - LC-Power LC-CC-120 - MSI B450 Tomahawk Max - 2x4GB ADATA 2666 DDR4 - 120GB Kingston V300 - Toshiba DT01ACA100 1TB - Toshiba DT01ACA200 2TB - 2x WD Green 2TB - Sapphire Pulse AMD Radeon R9 380X - 550W EVGA G3 SuperNova - Chieftec Giga DF-01B - White Shark Spartan X keyboard - Roccat Kone Pure Military Desert strike - Logitech S-220 - Philips 226L
  • Livingroom PC (dad uses): AMD FX 8300 - Arctic Freezer 64 - Asus M5A97 R2.0 Evo - 2x4 GB DDR3 1833 Kingston - MSI Radeon HD 7770 1GB OC - 120GB Adata SSD - 500W Fractal Design Essence - DVD-RW - Samsung SM 2253BW - Logitech G710+ - wireless vertical mouse - MS 2.0 speakers
Link to post
Share on other sites
Posted
  • Author
18 hours ago, Electronics Wizardy said:

This is prety normal for QLC drives. Give it a few hours at idle and it should empty the write cache.

TIL there are significant differences in flash drive technologies. I just read on howtogeek that running a QLC as a boot drive is not a good idea. Should I be worried about this right now?

Link to post
Share on other sites
Posted
1 minute ago, Greg136 said:

TIL there are significant differences in flash drive technologies. I just read on howtogeek that running a QLC as a boot drive is not a good idea. Should I be worried about this right now?

It will slow down like that, but sinceyour not copying all those files all the time, there is no issue with using QLC as your boot drive.

Link to post
Share on other sites
Posted
  • Author

No difference after re-trimming, so must be simply the fact the SSD's cache is full and it can only write directly to flash.

 

I was curious and enabled "full performance mode" & ran a new benchmark. Can someone please explain what is going on here!

 

Screenshot(333).png.2fbd16d9d529f21e58bc19fd941fdbad.png

 

SSDbenchmarkRAPIDMODEcensored23_07_23.png.9cbba0bdbbe149a0be8362ffa731ba90.png

 

The new read/write speeds are hugely above what is capable over SATA 3.0, so it seems as if there is some sort of trickery behind these numbers.

 

  • Since the actual SSD is being limited by the SATA interface, do these inflated numbers actually result in a performance increase of the system?
  • When will this "full performance mode" actually give me an advantage?
  • Should I revert back to standard mode to avoid causing damage to my SSD, especially since it is the boot drive of the system?
Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing Troubleshooting

×