So I just got this game, and right now I'm running it on a garbage computer but it runs. What I'm asking that if I upgrade my computer to using 4gig RAM and a Sapphire Radeon HD6770 but I'm still only gonna be using a single core processor. Will the framerate still be garbage or will it be better?

The minimum specs for Skyrim are as follows:

• Windows 7/Vista/XP PC (32 or 64 bit)
  
• Processor: Dual Core 2.0GHz or equivalent processor
  
• 2GB System RAM
  
• 6GB free HDD Space
  
• Direct X 9.0c compliant video card with 512 MB of RAM
  
• DirectX compatible sound card
  
• Internet access for Steam activation

I'm guessing that you're CPU is a Pentium 4, so it should be pretty fast for a single core, but old. Overall, you will not get much (If any) better FPS with that single core. You should invest in a new CPU above anything else. Preferably one of the new Ivy Bridge quad core CPUs.

I'm using an old dimension 5100 computer, my motherboard can't even handle a dual core processor

Then, no, it won't run too well if it runs at all.

I figured. You'd need to get a new mobo and probably a new case to go with it if you want any more than mediocre performance.

You see, without a good CPU even the most powerful of GPUs will be useless as the CPU will be acting as a bottleneck, keeping you from using the full power of the card. Same goes for RAM. And if you don't have a 64 bit OS you can't really use more than 3.5 GB of RAM anyway.

And probably a new PSU. In essence, a new computer.

a 6770 will just cause your CPU to bottleneck, you'll likely gain very little if any FPS.

Yeah, pretty much. And a new OS too, as the one on the PC, if original, is likely to be an OEM.

Bah okay, thank you anyway

Yep defo need a new pc dude. I was on probably the exact same machine a year ago. Saved a bit, and built my rig.

You'll need a new psu, motherboard, CPU, graphics card, new ram to work with your new mb, and probably a new case because you'll need good space and fans for the hardware as these days things get heated with the power our machines have.

So basically a new pc

Cases are optional.

I seriously need to build a submerged system one of these days... >_>

Hot glue it all to a piece of styrofoam and put it in the tub.

That'd require a lot of non-conductive liquid >_>

I'd like something like a fish-tank. A large one with transparent sides and lights in it. Now that's what I'd like to build.

Been a dream of mine for a good 5+ years. Just don't have the cash for it, sadly.

Ha may be optional, but my current hardware would not have fitted in my old pc case, mainly the size of my card lol