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dryroon
10-09-2016, 02:56 PM
Hello everyone,

So I bought this laptop used that comes with a 1TB 7200RPM HDD and a M.2 PCIe 512GB SSD.

My previous was an G750JM which I had installed Crucial M500 1TB SSD.

I passed the G751 HDD to my old G750JM to sell it, will also sell the PCIe SSD in order to recover some money.

Now the problem is; my Crucial SSD is slower on the new G751JY.

I noticed that this laptop have a slave/master setup for the two SATA ports, and the middle one (slave) operates at half speed.
The master port (left, where PCIe SSD comes installed) gets all my performance back but noticeable slower especially on 4K read/write.

Here is the comparison, all laptop drivers are up to date and also installed 64-bit Intel storage driver/AHCI, latest BIOS too. G750 WIndows 8.1 64x / G751 Windows 10 64x - this is the only difference.

https://s3.postimg.org/xsnflrvur/750.jpg
https://s3.postimg.org/nwmcm4q2r/751.jpg

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Clintlgm
10-10-2016, 12:14 AM
2nd bay is SATA 2 3GB, 1st Bay the one with the M.2 drive Is SATA 3 6GB. If you put a hard drive in the CD bay its only SATA 1.5

dryroon
10-10-2016, 04:28 AM
2nd bay is SATA 2 3GB, 1st Bay the one with the M.2 drive Is SATA 3 6GB. If you put a hard drive in the CD bay its only SATA 1.5

Yes I get that on the metal cover saying slave/master for the ssd position, my ssd is plugged on the 1st bay, SATA 3 6GB and still the performance is worst than in the G750JM...

Buggsy
10-10-2016, 01:38 PM
Since the only thing effected is 4K performance, I think we can focus on the drive itself. I don't think any system setting would be able to affect just 4K writes. It's possible that they drive could use a good wipe. I bought a used SSD off of ebay, and wasn't that happy with it. It was simply "ok". Well, after I bought my new laptop I needed to wipe that one to sell. I used Secure Erase for the SSD, and holy cow did that revive the SSD. Check it out, it might be what you need if the 4K benchmark is that bothersome.

http://www.makeuseof.com/tag/securely-erase-ssd-without-destroying/

dryroon
10-11-2016, 02:18 AM
Since the only thing effected is 4K performance, I think we can focus on the drive itself. I don't think any system setting would be able to affect just 4K writes. It's possible that they drive could use a good wipe. I bought a used SSD off of ebay, and wasn't that happy with it. It was simply "ok". Well, after I bought my new laptop I needed to wipe that one to sell. I used Secure Erase for the SSD, and holy cow did that revive the SSD. Check it out, it might be what you need if the 4K benchmark is that bothersome.

http://www.makeuseof.com/tag/securely-erase-ssd-without-destroying/

There you go, this make more sense, I was worried that I could have a fault in the laptop/chipset/connector or something as I also bought it used. I will try it, thanks for the hint highly appreciate the help!