Hello, I tried playing Episode One but it just
runs too poorly with alot of stuttering. The PC
I am playing on is an Acer 2 ghz, 512 mb ram with
an nvida graphics card. Is this PC not powerful enough
or what can I do?

I played HL2 and it ran OK but with some minor stuttering, long loading times, and also ran poorly with many moving
objects at the same time. But I realy enjoyed playing it,
and I hoped I could play Episode One as well.

what graphics card is it? You need 1GB of RAM at least! EP1 is alot more high spec than HL2.

Here are the Minimum and Recommended specs.

quote Half Life 2: Episode 1 profile

Min System Requirements:
Processor: 1.2 GHz Processor
OS: Windows, 2000/XP/Me/98
Graphic card: DirectX 7 level graphics card
Hard Drive: 4.5 GB
Memory: 256 MB RAM
Other: Internet Connection, DVD-ROM Drive

Recommended Requirements:

Processor: 2.4 GHz Processor
OS: Windows, 2000/XP/Me/98
Graphic card: DirectX 9 level graphics card
Hard Drive: 4.5 GB
Memory: 512 MB RAM
Other: Internet Connection, DVD-ROM Drive

Yeah, HL2:E1 takes more to run than HL2. You can lower the screen resolution or turn down the detail levels in order to make it run faster.