my HD2600 doesn't have a stable onboard clock oscillator :(

[leeperry]

Hi there,

I've got a Sapphire HD2600 that gives stunning results on a HC3100 DLP projector with HD movies.

But I'm starting to realize that it doesn't have a stable onboard clock oscillator :(

I can get rock stable 24.000fps in 1280*768 48Hz, but not in 24/72/96Hz....it's always oscilatting between 23.99x and 24.00x :banghead:

same goes for 1920*1080 24/48Hz....not stable at all :(

even worse, it's UNABLE to output 1280*720 48.000Hz, the best it can do is 48.545Hz :(

http://pix.nofrag.com/8/5/f/0fa5dfc9429bb3d96ac40bd2f3cb9tt.jpg (http://pix.nofrag.com/8/5/f/0fa5dfc9429bb3d96ac40bd2f3cb9.html)

http://pix.nofrag.com/8/e/0/715faf6df0eadc59ab7a023ae30ed.png

OTOH everything's fine in 720p@72Hz :

http://pix.nofrag.com/5/9/e/198a6dfe9039a45d1011bd905596d.png

but my 1280*720 48.545Hz ends up in 24.273fps in MPC HC :

http://pix.nofrag.com/5/6/c/755216571ba4596283509f3aff197tt.jpg (http://pix.nofrag.com/5/6/c/755216571ba4596283509f3aff197.html)

http://pix.nofrag.com/c/e/a/6c8fd204fffdd48b2d59b230e1137tt.jpg (http://pix.nofrag.com/c/e/a/6c8fd204fffdd48b2d59b230e1137.html)

is there any recent ATi card with more sensitive/stable oscillator around ? :(

a friend of mine has copied my 1280*720@48Hz powerstrip settings in his 8600GT drivers, and he ends up with 48.004Hz in Reclock.....so I don't know whether Powerstrip is at fault, or if my videocard oscillator is not sensitive/stable enough :(

TIA,

[leeperry]

in 1280*768 48.000Hz, the system clock in Reclock is on 2857460.00 Hz +0.00 Hz (+/- 0.00 ppm)....and the frame rate is rock stable in MPC HC on 24.000

in 1024*768 96.000Hz, it's on +2.63 Hz (+/- 0.00 ppm)....yet the frame rate in MPC HC is oscillating like crazy between 23.99x and 24.00x

I would appreciate rock stable frame rate in any given situation........or at least in 1280*768 72/75Hz so I get less RBE on my DLP projector....but right now it's also fluctuating like crazy between 23.99x and 24.00x....only 1280*768 48Hz is rock solid :
http://pix.nofrag.com/3/7/9/67115ade55a379df585132f95e06c.png

and this is 1280*768 72Hz, which is not rock solid and drops frames....with the risk of stuttering like crazy after 40/50 mins :
http://pix.nofrag.com/6/3/d/f05d604c0ebadb7335caccd27d249.png