Laptop feeling kinda sluggish

[Lunacy]

My old laptop is still relatively fast for its age but it does feel kind of sluggish at times.

I have only HDD for this thing (which might be the problem)

and a single stick of d4 8gb 2133mhz of RAM from Hynix (HMA41GS6AFR8N). and finding the exact same ram with matching part number is a pain.

I know reading that might feel like reading a cursed text for some of you

 

So i have this five as a choice

1) buy another single stick of d4 8gb 2133mhz ram from Hynix (52 USD) (HMA41GS6AFR8N)

2) buy another single stick of d4 8gb 2133mhz ram from Corsair (40 USD) (CMSO8GX4M1A2133C15)

3) buy two stick of d4 2x4gb 2400mhz ram from corsair (60 USD) (CMSX4GX4M1A2400C16)

4) buy a Crucial P1 500gb ssd (88 USD) (For the OS and things like that)

5) buy a PNY CS2140  500gb ssd (88 USD) (For the OS and things like that)

 

I don't really want to put that much into this laptop cause I'll probably only use this laptop for homework and things w low workload similar to that. So which one of those will improve my laptop's performance the most?

 

[HanZie82]

The SSD will be the biggest difference.
The RAM might help if you have issues now with programs that use much of it.

But mostly the RAM will very little difference, specialy compared to the difference you get from going from HDD to SSD.

[Electronics Wizardy]

Get a ssd, it will make a much bigger difference than adding ram.

 

You probably won't notice the difference between those ssds(and cheaper models).