Intel Core Duo SU9400 1.4GHz
320GB Hard Drive
32-bit Windows Vista
I take care of my computers but this laptop is lagging a little. I know the processor isn't very fast, But would an upgrade to an ssd or hybrid drive with 64-bit Windows 7 have a noticeable difference? Also perhaps 8GB RAM? It would be overkill for my needs but seen as its only £40 now seems like good bang for my buck.
It depends on what is causing the lagging.
If you hard drive is the bottleneck here, an SSD would certainly be a worthwhile upgrade.
Even if the hard drive isn't the problem, an SSD can noticeably cut down on startup and loading times.
8GB RAM would need a 64-bit Operating system to be utilised, since 32-bit can only address something like 3.3GB. So a RAM upgrade would only be useful if you can change/upgrade your OS to a 64-bit one.
Whether the 8GB ram would help your computer - that depends on what you use this machine for. If it's the processor slowing the computer, the extra RAM won't do much to stop it.
With a 32bit version of Win7 the RAM upgrade would be wasted on your laptop.
And even with a 64bit version and 8GB RAM you'd not be able to notice any performance improvement.
A SSD would only affect storage access times. It would give you faster boot-up, and faster program load times. But overall, it wouldn't make you laptop noticeably faster and probably would not fix the lagging your mention.
Have you done a 'clean' install of your OS lately?