epox 9NDA3J overclocking + geil ultra plat. pc4400??

[Sentry2]

Hi, just got a 9NDA3J, winchester 3000+, and a gig of geil ultra ddr550. Could only get it to 260x9 1:1 HTT4x. Figured it was the 2.8v max vdimm so I did them vdimm mod with a 4.7k ohm resistor. Now I have a stable .3v increase Sitting at a nice 3.0v with 2.7v selected. Even with vdimm @ 3v I can only get to 266x9 1:1 HTT4x(stable)!!!! Not bad but I was hoping for a little more. I've seen 'em run 275x9 htt4x pretty easy. Don't think it's my cpu cause it will run stable at 275x9 with ram limit set to 166. Have an XP90 w/92tornado. Idles a 32c. Not a heat prob. Have the newest bios. My power supply is an antec true380. Toms hw said they max out at 471w though I don't know how stable it is. BTW, running a evga 6800 w/NV5 unlocked running @ 400/850. 3Dmark 03: 12,122
05: 4,832. Just wondering if anyone's tried the geil ultra yet. Any info would help. Thanks, JM

 

[arswihart]

turn htt multi to x3, it hardly impacts performance
what's your RAM timings? vcore?
Haven't tried that RAM, but I think you should be getting higher too.

 

[Sentry2]

My vcore is at 1.55. Ram is at 3-4-4-10. You don't think it could be the power supp do ya? Tried 1.6vcore but didn't seem to do much.