CPU or Tuner? Help!

nsomniac · **6th April 2007, 04:02 AM**

Hi all,

I just recently updated to Windows Vista Ultimate edition and it looks amazing... but its running really slow! I'm thinking its my CPU but I also have the jerky motion problem with my tv tuner. Downloaded TV shows run fine but watching live tv is stuttering all the way!

So i'm wondering whether it's my tv tuner or my CPU??? Overall the whole of Vista is loading a bit slow so i'm thinking it's my CPU but it could be both!

My specs are:
Gigabyte 8I945G motherboard
Intel Pentium 4 2.50Ghz, 3.02 Ghz CPU
2gig RAM
Avermedia A16A tv tuner

I've tried both the WinXP and WinVista drivers for the Avermedia as per other posts and it's still stuttered and jerked....

I know i'll probs have to upgrade something but i dont want to upgrade them all! I'd prefer not to go to the Conroe CPUs otherwise i'll have to upgrade my motherboard as well which will be out of my budget.... Will an upgrade to a Pentium D 3.4ghz solve my problems? Or even a Pentium D 3.0ghz? Do the dual cores run a lot faster? I really need some help or advice with this one!

Hope someone can help... anything would be appreciated

gslender · **6th April 2007, 12:59 PM**

Quote:

Originally Posted by nsomniac

I'm thinking its my CPU but I also have the jerky motion problem with my tv tuner. Downloaded TV shows run fine but watching live tv is stuttering all the way!

Are you watching SD or HD TV ?

If the stutter occurs when watching HD, and its only when viewing content generated by the TV card then it might be the card/signal etc.

If SD works, then just watch that !!

logifuse · **6th April 2007, 02:58 PM**

Can you be a bit more specific about your current CPU? Is it 2.5 or 3.02GHz? Or is it overclocked? Is it hyperthreaded? When I was running a plain 2.8GHz P4 with 1GB of RAM, it was fine for SD, but borderline for HD (on MCE2005). The other thing you might have to do is turn off some of the vista visualizations (aeroglass, etc) as they seem to need a dual core CPU to really go well.

I'm testing Vista Business on an Athlon 1700+ with 512MB of RAM & a 5200 video card, & it actually runs OK without the bells & whistles (not running MCE though).

Maybe try the visualization thing first & if that doesn't help, maybe a CPU is in order. Also, try to find out what your signal is like (signal & quality) by using scanchannelsbda.

Justin

vlad · **6th April 2007, 05:05 PM**

I have P4 3.0 and it is fine for SD and HD - but just as stupid Nvidia drivers cannot use yet hardware acceleration on Vista codec. So it is about 60% on SD and 85% on HD.
On XP it was not more than 25%.