While your computer is fairly low-spec, it looks like you've got 2.5 GHz on a couple of cores, and 4 GB of RAM. That means, and not all performance is equal, you can probably run any distro and desktop you want - with some compromises.
So, in these situations, I like to toss this link into the mixing bowl:
Now, if asked what distro I'd run on that hardware, I'd suggest Lubuntu - but I'm pretty heavily biased. But, I'd say try a variety of 'em. They'll cost you nothing but time. Then, you can decide what's right for you, what fills your needs best.
So, in these situations, I like to toss this link into the mixing bowl:
Finally, an Answer to What is The Best Linux Distro? • Linux Tips
Finally, an attempt to answer to the age old question: Which Linux distro is the best? Read on to find out which distro is the best Linux distro.
linux-tips.us
Now, if asked what distro I'd run on that hardware, I'd suggest Lubuntu - but I'm pretty heavily biased. But, I'd say try a variety of 'em. They'll cost you nothing but time. Then, you can decide what's right for you, what fills your needs best.