• Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.

stupid slow speeds with SSD drive

Crucial - MX500 1TB 2.5" for $199.99 (Price/GB $0.20)
https://ca.pcpartpicker.com/product/h3tQzy/crucial-mx500-1tb-25-solid-state-drive-ct1000mx500ssd1

Crucial - MX500 500GB 2.5" for $104.99 (Price/GB $0.21)
https://ca.pcpartpicker.com/product/ft8j4D/crucial-mx500-500gb-25-solid-state-drive-ct500mx500ssd1

No on-board DRAM Cache, I would look somewhere else.
 
Last edited:
I couldn't find much info about on-board DRAM cache for most of the drives.
So I will stick with Crucial then since I have good experience already.

Thanks all.
 
Its from 30gb from full and you want to load another 20gb. Start deleting stuff.
You can also look into the Samsung 850 line, you can find used ones with still lots of life in it.
 
This is not happening because of the lack of DRAM. My 850 and 860 behaves in the exact same way, you are all presenting him a solution that isn't really a solution. If you want to buy a new drive that doesn't slow down as it gets full you will waste your money because they will all do that. It's a limitation of the storage medium itself.
 
I switched all my mechanical hard drives to SSD lately, and I'm pretty happy with my COLORFUL plus 960GB.
Other SSD I'm using:
(super cheap) Inland 480GB x 2 in RAID 0 on my main workstation
OCZ Trion on my father's laptop (can't remember its capacity right now)
Silicon Power SSD 256GB on a Macbook Pro
Crucial MX300 525GB on my main laptop
 
This is not happening because of the lack of DRAM. My 850 and 860 behaves in the exact same way, you are all presenting him a solution that isn't really a solution. If you want to buy a new drive that doesn't slow down as it gets full you will waste your money because they will all do that. It's a limitation of the storage medium itself.
Like most things you post, this one is also wrong. Take a look here: https://www.anandtech.com/show/12263/the-crucial-mx500-500gb-review/3
Lots of drives tested also while full, none of them dropped performance as much in more stressful tests.
 
If it helps... these are the latest (2017) RMA rates available for the major vendors ... 1st number is the RMA rate for SSDs between 6 and 12 months of operation. the 2nd number was the previous reporting period with same age.

  • Samsung 0,17% (0,20%)
  • Intel 0,19% (0,27%)
  • Crucial 0,31% (0,28%)
  • Sandisk 0,31% (0,62%)
  • Corsair 0,36% (1,67%)
  • Kingston 0,44% (0,29%)
Note that Corsair has finally dropped their latest RMA rate below 15%
 
This is not happening because of the lack of DRAM. My 850 and 860 behaves in the exact same way, you are all presenting him a solution that isn't really a solution. If you want to buy a new drive that doesn't slow down as it gets full you will waste your money because they will all do that. It's a limitation of the storage medium itself.


Then your 850 and 860 are failing. Dropping to 2-10 MB/s should never happen on a good drive. I just tried this on my 850 Pro 250GB, had 30gb free and copied Metro 2033. While the speed did drop, it still could transfer files at 450 MB/s (that's more) while +90% full. And I don't even think this was solely related to the drive being full, I think it largely depends on the type of files you're transfering,that's why it dropped to 300 MB/s and went back to 470MB/s again.

s8VErF5.jpg
 
Last edited:
Back
Top