What games are you playing if any or when do you notice the points that the system seems to lag on yah. I have this card and using it now without any issues.
my system specs
vista 32 bit Might goto 64 bit later on
250 gig sata hard drive
4gigs ram pc6400
AMD 64bit Athlon 4000+ dual core 2x2.5 ghz
ATI x1650 pro
400 watt PSU
If all your drivers and software that you use is up to date and installed correctly and there isn't a compatibility :doh: problem with your video card and system then I suggest the following.
The upgrade for the VC was nice but now you added performance in video support with out enough ram for it to run at full potential so the system is lacking in RAM which is not good. That makes your system use your hard drive as a staging device more then necessary. Which really pounds your hard drive and has the potential to over use your hard drive and possibly can end in hard drive failure with excessive over use, But with system using the hard drive like that will slow down the system. It will seem like the system or graphics etc. will lag in performance. The reason you are noticing the performance issues now is because you are using a stronger video card TRYING to pull and push more richer data threw the little ram you have. The card my have its own memory and such but that isn't always enough. Make sure your old onboard video card is DISABLED. If it is not disabled then your system could be trying to use both video cards, and that can cause alot of undesired results along with possible damage to the system. If the second VC is running still then disabling it could fix some of your problem. I looked at your MOBO specs from what you listed and your system can handle, Try to get the fastest and two 1gig sticks to max your system or just one 2gig stick.
* Cache Memory Type None
* Supported RAM Technology DDR SDRAM
* Supported RAM Integrity Check Non-ECC
* RAM Installed ( Max ) 0.0 MB / 2.0 GB (max)
* Supported RAM Speed PC2700 , PC3200 , /PC2100
* RAM features Two DDR channels , Unbuffered
If you are able to get the ram then MAKE sure both ram sticks are exactly the same. Most computer places will tell that it is okay to have Mixed brands and speeds of memory, which in most cases it is okay, But you are increasing your chance to get memory errors and a number of other corruptions and a small chance of damage to your system.
I can't see anything else from the specs that could cause you problems.:a
If that is really the PSU 500W then you have more then enough power to run that system and have some to spare to another pc :bigsmile: