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Everything posted by graysky

  1. @hardnrg: Glad you like it. Always glad to give back to the community. I wasn't aware of 120mm fans that exceed 1600 RPM. That's really a lot of mass to move that fast when you think of it. How fast and how loud are they fastest ones (probably deltas)?
  2. Cool (literally)! That would be consistent with these findings as well. We usually keep the place pretty cool in the winter since gas prices are so high; I will say that this past winter my machine ran really cool under full loads. That kinda prompted me to do this experiment to try to understand the effect better. Cheers.
  3. I recently started to remove the "auto" setting from some of the user configurable voltages in my P5B-Del and noticed that not only is my system stable to 2x orthos for >2 h (and still counting, I'll probably stop it after 6), but the "system or chipset" temp as measured by speedfan (Winbond W83627DHG sensor array) has dropped as well which to me means the auto settings were very likely over-volting one or more of these numbers just like it did to the vcore on my CPU before I manually set that too. Anyway, the last time I did a 2x orthos stress test, room temp was about 72
  4. This is one of the easiest mods you can do to your P5B-Deluxe (and probably any P5B although I haven't tested it on any model but the Deluxe) to help you get higher voltages under load conditions and also lower your idle vcore; it is particularly useful for people wanting to get more juice to feed their o/c'ed chip. Background As you know, the P5B-Deluxe (and others in the P5B family) has a vdroop built in for some reason (protect processor maybe, I dunno). Vdroop is the term used to describe the voltage drop between idle and load conditions. Try it yourself right now: (assuming you have your vcore manually set in your BIOS) load up CPU-Z and see what it's reporting as your idle vcore. Now load up a few instances of orthos and have a look. For example, before the mod, mine dropped from 1.280v (idle) to 1.232v (load) which is -0.048v! After you do the "pencil mod" it should drop by a very small amount or none. The "Pencil" Mod What do you need? A soft pencil. Look for one with a 2B rating on it. Standard pencils are HB. HB pencils will work, but the softer the pencil lead, the better the results. You can find a 2B pencil at most any office supply store (staples, officemax, etc.); they are usually in the art or drafting section (aisle #7 for my staples). I got one in 4 pack for under $3. Now, either unplug or switch off your power supply so the LED has gone out and simply shade (gently draw with the pencil back and forth) over the correct surface mount component (it's a resistor maybe?) -- refer to the pictures below... it's the one with the yellow arrow pointing to it. You can see on the zoom where I colored over the right one. NOW, boot into Windows and repeat that exercise where you measure the load and idle vcore. Mine went from a drop of 0.048v before I did the mod to a drop of 0.008v after the mod. These are both @ a BIOS vcore of 1.3250v. I recently lowered the BIOS vcore to 1.2625v and now I have NO vdroop at all: idle is 1.232v and load is 1.232v, and the system is stable to 2x orthos for over 6 h! Undoing the "Pencil" Mod You can undo this very easily with a little alcohol and a few q-tips. It is 100 % reversible. If you found this useful, please post your before/after results in this thread. Enjoy!