I have a 4-5 year old PC. My system runs with a P4 dual core 3 Ghz, 128mb ATi radeon 9600Gt card (AGP), 1.5Gb ram and I use a sound card.
Now other than having what I think is a reasonable CPU, my system isn't that uber and yet I am running High res with shadows turned off and everything else turned on incl. skins. My card is set to application control. I have been online for a total of 10 mins and my frames started at about 28. By the end of the 10 mins I was starting to get up to 40 on instances but averaging 30-35. Now to some this may seem unplayable but honestly I don't really notice that much between 30 and 75 which is what I was playing with prior to update(there is a little yes but not huge). I never got into any majorly heavy action but as I am testing things out and tweaking I was in an area that had about 20 guys 10 each side and staying low to the ground while in the fight and had a couple of small stutters but nothing too bad.
Now I'm not to sure on what others who are having issues are running with but I thought I'd put this up as a read for some.
Does the CPU have the ability to make a difference as most of the low end PC people are saying it is near unplayable and if so although it may be difficult to find one for the older model of PC would a cpu upgrade be a good choice? As opposed to a graphics card.
I have been getting my parts second hand from computer recyclers they have plenty of old school parts and cheap( however you need to know what you are looking for)Most I have found are pretty knowledgeable also.And honestly...why pay full price for something that you will eventually update soon anyway.
So as I have said this is just to see if this can make an impact and if it does, perhaps people can look for a CPU that has a little more oompf than what they presently have. If not then you have just wasted a bit of your life on some useless information....sorry...