Is there a possibility for ''upgrading'' the disk cache?

[Maq___]

Hi all,
I have a Lenovo Y-700-15ISK laptop,which has two storage devices:
a primary Samsung 128 GB SSD and a 1 TB 5400 rpm WD BLUE HDD as secondary.

I would like to know if there is a way I can ''upgrade'' the HDD's disk cache?

I know that it is possible,with using the SpeedBoost feature with a USB drive,but that is only possible if the OS is not installed on a SSD!
And my OS is installed on the SSD!

So is there an another way to increase the HDD's disk cache?

Please tell me!
Thanks to all in advance!
Best regards!

 

[gasaraki]

No, you can't add more cache plus there's no need and no benefits to do that on your secondary drive.

 

[Maq___]

I need to upgrade it in order to get better performance while playing games,which are installed on the HDD!

 

[Corwin65]

7200 RPM HDD would help a bit.