The volt mod was what my card needed. No longer crashes when overclocking...temps only budges a degree.
So, here's what I did:
Added ramsinks to the RAM on the card.
Velcroed a Yate to my motherboard tray. (12V)
GPU Core now tops out at 633 (vs. 530 pre-voltmodding and watercooling) @ 1.6V. Most likely I'll bring it up to 1.7V, see if I get any significant gains, if I get nil (or next to nil, ~30Mhz) I'll bring it back down to 1.6V. Might even try 1.5 just for kicks and giggles.
Idle is 29, Load is 34 (Extended, 30 minute load under ATiTool which stresses more than most games do )
With core @ 630 memory caps at 576... if I back the core down to 623, memory comes up to 621.
Edit:
Current overclock:
CPU:
X2 3800+ @2.8 Ghz - 1.51V (Digital Multi-meter, not board sensors)
Tried going higher, not much luck. I'm most likely going to keep backing off the voltage until I can stay stable @ 2.8.
Temps are still unknown at this point in time, though I wouldn't imagine them to be too high.
GPU:
X800GTO2+16 Pipes
523/517 (Core/Mem)
1.6v/2.008v (+.2v/Stock)
Considering pushing an extra .1v into it to see how it goes core wise. Might overvolt the memory a bit, too.
29C/35C (Idle/Load; Core)
32C/45C (Idle/Load; RAM)
Memory:
G.Skill HZ @ DDR500 (9:10 divider right now.) Going to Memtest them @ 280 tonight with slightly loosened timings and see how it goes.
Power supply voltages still have to be tweaked, they're a tad high right now.. Need to buy a decent screw driver to do it.
About to hook this thing up to the 'net to get some stability tests (Prime95 is acting funky, always has on my rig.) Most likely SP2004 (Yes, I know it's the same as '95, but it doesn't mess up.) or OCCT.
Everything is currently 32M stable (Or ATiTool 1 hour, in the case of the video card.)
Pictures coming as soon as I can find a connector cable!
--Trevor
Edit again
Also, just bought a 500Gig HDD. Who knows what I'll do with it.
--Trevor