[SOLVED] Low SSD Speed in a 4 year old Laptop

[Rushi_007]

Hi,
I bought a Kingston SSD 480 gb and on the site the read and write speed are advertised as 500MB/s Read and 450MB/s Write
https://www.amazon.in/gp/product/B01N0TQPQB/
now I installed it in my laptop and did benchmark with Crystal disk 6
All the image links and tests and BIos andd other info are in this link: https://imgur.com/a/uENBzqV

These are the benchmarks https://imgur.com/0IpRBuq
But when I copy a file say a video file from desktop and paste it on desktop the speeds are low initially thet
start at 260 MBPS for few seconds and later they gradually decreases to 100 MBPS
I checked the speeds with an ISO and mkv file and here are the results
https://imgur.com/xFkJkhZ

I ran my laptop in high performance mode.
These are my system details
Computer: DELL Inspiron 5537
CPU: Intel Core i5-4200U (Haswell ULT, C0/D0)
2300 MHz (23.00x100.0) @ 2294 MHz (23.00x99.8)
Motherboard: DELL 04NGGW
BIOS: A11, 07/30/2018
Chipset: Intel Lynx Point-LP (Premium)
Memory: 6144 MBytes @ 798 MHz, 11-11-11-28
- 4096 MB PC12800 DDR3 SDRAM - SK Hynix HMT451S6AFR8A-PB
- 2048 MB PC12800 DDR3 SDRAM - Micron Tech. 8KTF25664HZ-1G6M1
Graphics: Intel Haswell-MB ULT GT2 - Integrated Graphics Controller [C0/D0] [DELL]
Intel HD Graphics 4400, 1024 MB
Drive: KINGSTON SA400S37480G, 468.9 GB, Serial ATA 6Gb/s @ 6Gb/s
Drive: TSSTcorp DVD+/-RW SU-208CB, DVD+R DL
Sound: Intel Lynx Point-LP - High Definition Audio Controller [B2]
Network: RealTek Semiconductor RTL8101/2/3 Family Fast Ethernet NIC
Network: Atheros/Qualcomm AR9565 Wireless Network Adapter
OS: Microsoft Windows 10 Home Single Language (x64) Build 17763.253 (1809/RS5)

I even did userbenchmark.com benchmark test and these are the results.

My laptop supports SATA 3 and i checked it with HWinfo and these are the results
https://imgur.com/kXgHqNq
SOme times suddenly my ssd freezes and I had linux mint and some times my laptop also freezes and
sometimes after boot mouse suddenly wont work.
I can hear a cat like purring sound from SSD sometimes.
I hear fan like rotating noise also and I am sure it is not laptop fan.
Is my SSD normal or is my laptop bottle necking it or what is the problem?
Should I change it?
Some one please respond.

 

[geofelt]

When you initially write to a SSD there are plenty of free nand blocks to write to.
Eventually, they all get filled up and a write needs to do a read/rewrite to get the data recorded.
In time however the ssd implements free space management, things will get cleared up.
Some ssd brands use better controllers than others.
I do not think you have a problem.