heavy load apps, where to host them

Hello bhaters,

Today I bring another silly question that is causing me trouble.
I have 2 $15/mo windows vps where I've installed several apps. Of course I dont run them all together.
But lately I have one of them running Teetadder with about 50 accounts, also No Hands SEO running only 7 threads. That along consumes all the resources from that vps and it fails often.
The other vps has similar bottleneck.

My question is, is it possible that you will need a complete dedicated vps to host for example Tweetader with 50 accounts, another for No hands seo, another for BMD and perhaps SB... I mean is this possible ?

What would be my best alternative ? What are your experiences ? Suggestions ?

Thanks!

maybe you should tell us some more information about your vps, cpu, ram and so on

this is the information of one of the vps:

Intel(R) Xeon(R) CPU
E5620 @ 2.40 GHz
2.54 GHz, 1.00 GB or RAM
Physical ADdress Extension

Data from Start -> right click on My PC

Any ideas ?