Re: Puzzling Problems -- Pulling Hair
- From: Bill Anderson <billanderson601@xxxxxxxxx>
- Date: Tue, 01 Jan 2008 23:45:39 -0500
Paul wrote:
I think "If you give the memory 1.8V you'll get this, but if you give it
2.2V you'll get that" is a good description of the situation.
With the wide variety of raw memory used to make modules, it should
not come as a surprise, that some of it needs more than 1.8V
for practically all settings. And that is the stuff that can get
stuck, when a builder tries to POST for the first time.
Paul, if you have some experience with an Asus P5K-Deluxe Wi-Fi Ap, maybe you can explain something to me.
Remember, here are the basics:
Motherboard: ASUS P5K DELUXE/WIFI-AP LGA 775 Intel P35 ATX
Processor: Intel Core 2 Quad Q6600 Kentsfield 2.4GHz 2 x 4MB L2 Cache
LGA 775
Memory: Crucial 2GB kit (1GBx2), Ballistix 240-pin DIMM, DDR2
PC2-8500
Video Card: SAPPHIRE 100210L Radeon HD 2600XT 256MB 128-bit GDDR4 PCI
Express x16
Power Supply: PC Power and Cooling ULTRA-QUIET PSU: SILENCER(R) 610
EPS12V
The 1-gig stick I've had since I built the system in August 2007 still works fine. At least Memtext found no problem with it on one full pass earlier this evening. My other original stick went bad in early December, I RMA'd it, and I ran the new one paired with the old one for about three weeks with no problem.
But the new, RMA'd stick, went bad this past Saturday morning while I was doing nothing more than typing a Usenet post in Thunderbird. Nothing else was running. The system just froze and I couldn't reboot -- couldn't even get a post beep.
I know the stick is bad because:
1) I removed the new stick and found that with just the old stick installed the system runs fine. A little slow, but fine. Memtest86+ shows no errors.
2) But with just the new stick installed in the same DIMM socket I'd used for the old stick, the computer won't even boot. These fancy memory sticks have blinky LEDs on top. The dead stick won't even blink. Can't run Memtest86+ if the system won't boot.
3) Just be sure, I switched out the sticks again. Old stick: works/blinks. New Stick: doesn't work/doesn't blink.
OK, I'll be RMAing again tomorrow morning when Crucial reopens from the holiday.
But what will I tell them? Is it possible I've been killing my memory with bad BIOS settings? I've had all the memory settings but one set to AUTO. The one setting I changed from default was the DRAM Frequency item in BIOS. I set it to DDR2-1066MHz because page 2-13 of the manual says, "If you install a DDR2-1066 memory module, make sure that you set the DRAM Frequency item in BIOS to [DDR2-1066MHz]."
Now you have told me I should give the memory 2.2v. When I dug into BIOS earlier this evening, I found the only way to force 2.2v would be to look under AI Overclocking and activate N.O.S. THEN I see DRAM voltage defaulted to AUTO and I'm offered the opportunity to set it manually to 2.2v. But as best I can tell, this should not be necessary. BIOS seems to indicate that with everything set to AUTO and N.O.S. not specifically turned on (merely set to AUTO because AI Overclocking is set to AUTO), the system will sense the increased voltage demand from the memory set to 1066, and will adjust accordingly.
Is that right? Have I done nothing wrong? Or by not forcing 2.2v or by making some other misjudgment have I been damaging the memory sticks Crucial has sent me? Thanks.
--
Bill Anderson
I am the Mighty Favog
.
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