2010/02/28 11:31:24
johnksss
well that test past.

hummm..
so 1050/1300 didn't gain anything...
2010/02/28 19:03:30
Rudster816
Did this on normal water. RAM was at 9-9-9-28 with a 2:8. This was with Windows 7 and no tweaks. Im sure I could do a lot better if I did it with XP SP2 and some good tweaks.

This was done on plain water too

http://i175.photobucket.c...rudster816/SuperPi.png


2010/02/28 19:19:49
johnksss
damn...i should redo mine using 4 cores only
2010/02/28 20:23:49
Rudster816
johnksss

damn...i should redo mine using 4 cores only


Im not sure how much disabling HT helps. I did find out that disabling 2 cores HURTS the max overclock that Ive been able to get.

My first 03 run ever.... Worth like .6 Hardware points, oh well. Wish I could submit my x2 275 scores in the x1 295 section

http://i175.photobucket.c.../rudster816/100161.png


2010/02/28 20:57:37
awalleyeguy
Rudster816

johnksss

damn...i should redo mine using 4 cores only


Im not sure how much disabling HT helps. I did find out that disabling 2 cores HURTS the max overclock that Ive been able to get.

My first 03 run ever.... Worth like .6 Hardware points, oh well. Wish I could submit my x2 275 scores in the x1 295 section

http://i175.photobucket.c.../rudster816/100161.png



That is probably because your voltages are to high, vtt, qpi pll even v-core etc. There is no reason you should not be able to at least equal your 4 core overclock. It's the same cpu but using half of its resources or is it 1/4 (ht off). Speculation of course.

2010/02/28 21:08:52
Rudster816
awalleyeguy

Rudster816

johnksss

damn...i should redo mine using 4 cores only


Im not sure how much disabling HT helps. I did find out that disabling 2 cores HURTS the max overclock that Ive been able to get.

My first 03 run ever.... Worth like .6 Hardware points, oh well. Wish I could submit my x2 275 scores in the x1 295 section

http://i175.photobucket.c.../rudster816/100161.png

 

That is probably because your voltages are to high, vtt, qpi pll even v-core etc. There is no reason you should not be able to at least equal your 4 core overclock. It's the same cpu but using half of its resources or is it 1/4 (ht off). Speculation of course.


Disabling two cores does some funky stuff to the CPU. It just doesnt want to clock any better than when I have 4 cores enabled on it. I dont know why and one can only speculate, but most all of the WR's and top scores ive seen use 4 cores, so its definitely not just me.
2010/02/28 21:27:40
awalleyeguy
No argument on 4 cores vs  8 (ht on) but from above statement I thought you meant you can not clock as high with 2 as with 4 cores.
2010/02/28 21:37:43
Rudster816
awalleyeguy

No argument on 4 cores vs  8 (ht on) but from above statement I thought you meant you can not clock as high with 2 as with 4 cores.


I cant. My CPU wants more and more VTT to go any higher than ~245 Bclk with an x15 multiplier (im sure enough Vcore and cooling I could do it with x21). I had to push +500mv through it to get to 245, and I was only using one stick of RAM to minimize stress on the IMC.

Going down to two cores felt like overclocking an entirely different, less capable, chip.
2010/02/28 22:13:55
awalleyeguy
I know for me reducing my multiplier makes for a lot of head aches. Vtt is pretty much for uncore. My experience shows me you can muscle a chip to a certain point of over clock. After that you really have to tweak precisely, which could mean that a voltage that you needed for say 4.4 might have to be lower for say 4.6 cause that said voltage was actually compensating for something else either a voltage that was to low or maybe even canceling some kind of electrical noise. One thing for sure temperature can have a big affect, even if your cpu is well with in the "safe zone".  Try messing with clock skew 500ps or higher, sure will not hurt anything. Those really high frequencies get very picky of all settings being just right. One of the many reasons sub zero cooling works better is cold means less molecule movement = less frequency to interfere with other things. There is absolute zero but as far as I know there is no absolute highest temp cause you can't go slower than nothing but you can always go faster.  Just babbling sorry. Good luck.
2010/03/01 00:18:13
Rudster816
Well its the electrons that determine temp. So Im assuming the maximum tempeture is when those start moving at the speed of light.


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