- Joined
- Jul 20, 2006
Since there's been so much talk about how the E6400s overclock I figured I'd make a single thread so that everybody with an E6400 chip could chime in. I wanted this thread to be as specific as possible so:
1. You must have an E6400. This isn't for people to post their E6600 scores or talk about how you should have gotten an E6300 instead.
2. I'm confining this thread to 8x multi. I've already done extensive research into 7x multi and all the benefits of running that, now I'm curious about 8x.
3. NORMAL cooling. By normal cooling I mean standard water (no dry ice, or time machine modified water, or Elvin water from the mountain kings of Scandinavia) or air. (High end air acceptable)
4. 1.5 volts ABSOLUTE MAX.
I was running 2800mhz (400x7) at 2.75 volts and getting a max TAT at 60c load and max orthos at 58c load. So I started my overclock (this is on a DS3) at 1.32v and 375x8, hoping to get 3ghz, but surprizingly CPUz only reported it as 374x8 which put me slightly under 3ghz at 2994. Temps were around 64-66 load. So I dropped the vcore to 1.30 and raised the FSB to 380x8 and now I get 3.04ghz at max 100% TAT temp of 62-63.
I should also note that, on the DS3, at 375x8 I was getting that odd whirring noise I reported elsewhere (seems to be a common DS3 problem. Something about the caps they've chosen...) But at 380x8 I get nothing. I think it's a simple question of frequency and harmonics, which is probably why 375 was showing up as 374 but 380 shows up as 380. I could've also tried 376 I suppose, but if I can do 380... then why not?
I'm pretty sure I couldn't do 400x8 at a temperature that I'd be comfortable with, but I have yet to try 1.275x8, which may very well work. At this point I still believe 400x7 is the ideal because you get more out of your ram, but for the purposes of this test 380x8 seems perfectly nominal.
I'd also like to point out that this was not possible with my last power supply. It simply would not boot at anything over say 350x8. So everyone running into walls there I would suggest you change your power supply before anything else. Even if you THINK your power supply is fine. Change it anyway just to be sure. Either that or get a multimeter and measure the true volts.
Edit: Couple of things I forgot. Idle temp is 43/44 and vcore 1.30 shows up as 1.312 in CPUz.
1. You must have an E6400. This isn't for people to post their E6600 scores or talk about how you should have gotten an E6300 instead.
2. I'm confining this thread to 8x multi. I've already done extensive research into 7x multi and all the benefits of running that, now I'm curious about 8x.
3. NORMAL cooling. By normal cooling I mean standard water (no dry ice, or time machine modified water, or Elvin water from the mountain kings of Scandinavia) or air. (High end air acceptable)
4. 1.5 volts ABSOLUTE MAX.
I was running 2800mhz (400x7) at 2.75 volts and getting a max TAT at 60c load and max orthos at 58c load. So I started my overclock (this is on a DS3) at 1.32v and 375x8, hoping to get 3ghz, but surprizingly CPUz only reported it as 374x8 which put me slightly under 3ghz at 2994. Temps were around 64-66 load. So I dropped the vcore to 1.30 and raised the FSB to 380x8 and now I get 3.04ghz at max 100% TAT temp of 62-63.
I should also note that, on the DS3, at 375x8 I was getting that odd whirring noise I reported elsewhere (seems to be a common DS3 problem. Something about the caps they've chosen...) But at 380x8 I get nothing. I think it's a simple question of frequency and harmonics, which is probably why 375 was showing up as 374 but 380 shows up as 380. I could've also tried 376 I suppose, but if I can do 380... then why not?
I'm pretty sure I couldn't do 400x8 at a temperature that I'd be comfortable with, but I have yet to try 1.275x8, which may very well work. At this point I still believe 400x7 is the ideal because you get more out of your ram, but for the purposes of this test 380x8 seems perfectly nominal.
I'd also like to point out that this was not possible with my last power supply. It simply would not boot at anything over say 350x8. So everyone running into walls there I would suggest you change your power supply before anything else. Even if you THINK your power supply is fine. Change it anyway just to be sure. Either that or get a multimeter and measure the true volts.
Edit: Couple of things I forgot. Idle temp is 43/44 and vcore 1.30 shows up as 1.312 in CPUz.