Originally posted by: phile
Originally posted by: mkln
thanks for the quick reply . stability seems to be an issue when i undervolt it to 1.25 as i had one occurance when the system froze while installing Office, even though ORTHOS declared the system stable. i later upped it to 1.285 (i think?) and it installed w/o a hitch. an aftermarket cooler...i may look into that. what would u recommend?
btw, i am currently running my ram (2GB OCZ Platinums rev2) at 2.05V and at the spec DDR400 4-4-4-15 timings. i was wondering, however, since the multiplier seems to be unlocked w/ the most recent bios, maybe even b4 1503?, would it be better to lower the the multi to 6 and up the CPU to 400MHz so as to achieve a 1:1 ratio?.
lastly, is it neccessary to set the frequency of the busses or can i just leave them on 'auto' (pci-E, and pci). sorry for all the questions , but thanks again for the reply
*edit: also, why don't the voltage values in CPUZ, Everest, or AI Booster correspond with the ones in the BIOS? thanks again*
re: vcore
I'm not so sure your machine froze as a result of the lower vcore. Not impossible, though. Did you set the vcore in the BIOS or with a windows-based app? Better to use BIOS.
re: mem voltage
should be at least 2.1v (again, set this in the BIOS, not with any windows-based app)
re: multiplier
Leave it at default and use the divider. At FSB 266 you'll be using the 2:3 divider to run the mem at DDR2-800 (400MHz). FSB 400 will present a whole new set of challenges, regardless of the multi
re: bus frequencies
auto is fine until you significantly overclock
re: voltage readings
AI Booster is garbage. Doesn't properly report FSB, vcore, or vdimm. I recommend unistalling it and forgetting that it ever existed. Use BIOS for all tweaking.
CPU-Z's vcore reading is notoriously unreliable. Other than that, great little app.
Everest seems to accurately report the actual vcore. Another great app.
re: aftermarket coolers
Here's a short list of good models:
Towers:
Thermalright Ultra-120
Noctua NH-U12 (what I use)
Tuniq Tower (almost impossible to find)
Scythe Ninja
Scythe Mine
Scythe Infinity
CoolerMaster Hyper 6+
Non-towers:
Zalman CNPS9700 LED (not sure if it's out yet)
Zalman CNPS9500 LED
Arctic Cooling Freezer Pro
CoolerMaster Hyper48
I would have gone with the Thermalright Ultra-120 had it been available at the time. Was pretty-much sold-out everywhere. I'm happy with the Noctua NH-U12, but would recommend the Zalman CNPS9500 LED if you're not planning a crazy overclock. It will quietly keep your CPU cool up to a moderate overclock, depending on your CPU.
-phil