Upgraded an old laptop from HDD to SSD. Not getting full advertised read speeds.

JackieChang

I upgraded a HP Elitebook 8440p with this SSD from Amazon.

Link to SSD: https://www.amazon.co.uk/gp/product/B07TNQXQ6N/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1

And link to Laptop (I have the i5 version): https://support.hp.com/ie-en/document/c02030599

I then installed a fresh copy of Windows 10. Laptop is working fine, but I'm only getting half of the advertised read speed.

I know it says read / write speeds of "up to" 520 megabytes / second but was hoping to get at least close to it. Maybe in the 400 region.

Here's my Crystaldiskinfo results: I'm getting maximum read speeds of aroud 260 megabytes / second: https://pasteboard.co/JJIVxn0.png

Should I be getting closer to the advertised speeds? Have I messed up the installation?

I installed windows in IDE mode. Then after it was installed, I changed it to ACHI mode in the bios.

Should I have changed to ACHI mode first, then reinstalled windows?
Could it be a driver issue perhaps?

Device Manager detects the disk without any problems / yellow exclamation marks. I can see "Lexar 256gb" in the device list.

Maybe the laptop is too old? (released in 2010)

Any advice folks?

Thanks

JoyPad

You didn't do anything wrong, but your laptop has a SATA II interface, which is limited to 3Gbps, only half the speed of SATA III.
Hence the half speed.

JackieChang

JoyPad wrote: »

You didn't do anything wrong, but your laptop has a SATA II interface, which is limited to 3Gbps, only half the speed of SATA III.
Hence the half speed.

Problem solved in less than 5 mins. Thanks!

It's still much faster than the old HDD anyway.