Oddities while OC'n

[Sunin]

I just recently converted to water cooling. So I slowly began tweaking each component.

I set the multiplier to 6x and worked the FSB. I was able to get it stable at 466 with Prime95 for over an hour and such.

When I I bumped up my multiplier I could get the CPU stable at 3.85, with prime 95 for an hour, but what I noticed was an interesting side effect. When I overclocked my video card at all, I mean 1mhz above stock, the system would hang. I could do 3dmark06 at stock video clocks all day long, but any overclock of the video card = instant hang.

My previous stable OC on my vid card is 675/1053 on my GTX at stock volts. So I was pretty happy with that. Then all of a sudden I OC my CPU and can't overclock my GTX at all.

Any suggestions?

I would really like to keep my CPU at 4ghz and the GTX at 675/1053. I think that combo can get me 15k in 3dmark06.

I guess I can try playing with the FSB, maybe there is just something with that frequency that is playing hell with my vid card! Again any suggestions would be greatly appreciated.

To note I have not touched the speeds of the PCI-e slots

Thanks again for any assistance.

 

[BillParrish]

Interesting, weird but interesting. All I can say is that keep in mind the NB handles both the FSB communicaion between the cpu and memory and ALL the video data/pci-e from the cpu to the video card. Thats the only thing in common I can think of that may be the source of the issue. Exactly how and why that problem is occuring /shrug. First thing I would try and its only a guess, is to play with NB voltages and cooling.

 

[Sunin]

NB is water cooled and NB voltage was set at max of 1.5v with out the ability to get stable. Just a really odd problem. In the end I'm going to upgrade to the 780i with the $80 step-up program, but found that to be really odd.

Hopefully the next mobo will be a bit better at this