Asus P5B Vanilla (non dlx!) vcore+dimm needed

[nicepun]

Got the vdimm and vdroop done, they worked great. I'll do the vfsb and vmch next.

rjw, Could you please post pics of your vfsb and vmch vmods. I need to know which point to use as ground soldering points. Thanks.

[rjw]

Got the vdimm and vdroop done, they worked great. I'll do the vfsb and vmch next.

rjw, Could you please post pics of your vfsb and vmch vmods. I need to know which point to use as ground soldering points. Thanks.

When I did the Core, droop & dimms mods, I ran 2 4 conductor flat cables to a drive bay, where I had the 3 vr's montd on a board. So I had 2 grounds already.I just ran another 4 wire flat cable and used the grounds that I already ran. Other wise there are plenty of ground points on the MB.

Good luck

[nicepun]

When I did the Core, droop & dimms mods, I ran 2 4 conductor flat cables to a drive bay, where I had the 3 vr's montd on a board. So I had 2 grounds already.I just ran another 4 wire flat cable and used the grounds that I already ran. Other wise there are plenty of ground points on the MB.

Good luck

What voltage you have for the vmch and vfsb?

[rjw]

What voltage you have for the vmch and vfsb?

I've been up and down with them, but to start with, try 1.4

I've done my highest overclock at 1.55 to 1.65, but it made not difference. Both were stable.

I may have gotten there at 1.4 as well, but haven't had time to check that.

The key with my board is that bios will strangely set both to either 1.2xx or 1.3xx as per one of my previous posts.

auto, 1.2 and 1.4 are at the lower seting, while 1.3 and 1.45 are at higher setting.

So, if you set them to 1.4 to start with, at least they remain stable and at a value just above where the bios would set them.

according to the formula fsb = 166.67 x Vmch + 170, I should need well over 2 volts for 516 FSB, but as I get over 1.6 to 1.7, the NB starts to get a little tepid, plus I saw no difference between 1.55 and 1.7.

I have a copper heatsink and fan on my NB, so while the heat is being removed, I have found that in my case, I seem to be limited by cpu voltage more than NB.

My E6600 is only completely stable at 1.75v or higher (when over 500 fsb)

Also, 1.65v causes the cpu to run hotter,, but then from 1.65 to 1.8, it doen't really change.

I still have a long way to go but there seems to be some oddities once over 500 FSB.

I think that it has to do with the loose timings that are set by the bios.

Once I am in windows, I can use memset to change mem timings drastically, but it won't start windows if you try to tighten them up in the bios.

Which brings up another observation.

when I first started to exceed 500 fsb, I had to set the bios to mem controlled by spd, or (sometimes) no windows. my mem is rated at 5-5-5-15 @ 1064. (Corsair pc8500 dominator) at 2.2volts.

With these settings, I made it to 513 fsb (barely)

lately, I am using 6-6-6 along with loosening all the other timings in the bios and I can boot into windows at over 516.

But then the machine is a dog, even tho cpu is over 4.6 Ghz.

So memset comes in and I can set the timings down to 4's or 5's and things pick up again.

I think that the bios is totally confused at such high fsb and cpu speeds.

At 550 x 7 , it did fine.

Just some observations on my board that may help others