Official GIGABYTE Forum
Questions about GIGABYTE products => Motherboards with Intel processors => Topic started by: Dempseyb on October 06, 2010, 12:51:58 pm
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Gang... last ditch attempt before pulling all of my hair out.
I have a Gigabyte GA-EP45T-UD3LR that I'm trying to put some additional RAM in. I'm not overclocking or doing anything of the sort.
Currently I have 4GB of Crucial Ballistix memory.
The exact kit I have:
4GB kit (2GBx2), Ballistix 240-pin DIMM, DDR3 PC3-10600 memory module
BL2KIT25664BA1336
* Module Size: 4GB kit (2GBx2)
* Package: Ballistix 240-pin DIMM
* Feature: DDR3 PC3-10600
* Specs: DDR3 PC3-10600 • 6-6-6-20 • Unbuffered • NON-ECC • DDR3-1333 • 1.8V • 256Meg x 64 •
Everything runs fine with 4GB and stable, as LONG as I manually set my timings in the bios to 6-6-6-20 @ 1.8. I forget the exact setting name, but there is a setting related to DRAM performance, it's options are something like Extreme, turbo and standard. I have that switched to standard.
I want to add another 4gb, so I ordered the same kit. NO LUCK. Windows 7 64 bit either blue screens or reboots during boot. Memtest shows fine, and to boot, I took the memory in to another computer at work and ran 8gb stable for two days. Brought the memory back home, and had the same issue. If I try to boot from a linux Live CD, I experience either a hard lock or a kernel panic.
I can run 4gb of the old memory fine, or take that out and run 4gb of the new kit I ordered just fine. But when I put the full 8gb in, everything goes -crazy-.
Does anyone have any suggestions on other settings I can change in the bios.
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Hi there and welcome to the forum.
You don't say which revision your motherboard is or what version of BIOS you are running but I notice that F7 improves memory compatibility. If you are running an earlier version of BIOS I would suggest that you update to F7 or later.
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Hi and welcome to the Gigabyte Forum.
You seem to have a problem there. The obvious answer is that when you fill all the slots you need to raise the voltage a little to compensate for the extra loading. You say you tested the memory but did you use Memtest86+ on each module seperately for about ten loops each?
Damn! Absic snuck in there again. Makes note to self "make answers shorter"
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Wow everyone, thanks for the quick replies.
I do have the latest bios installed from their site. F10 I think.
I have rev 1.0 of the motherboard. Sorry for not including that :)
I did *not* test each module a individually just as a whole. I will try that if bumping the voltage does not help.
Even though the memory is rated for 1.8, it won't hurt going a *little* higher.
Thanks again!
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I am not sure of the maximum voltage for your memory but anything up to that should be fine and often will make it stable.
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Ok, the stick says 1.8 and I'm already running at 1.8. Should I go a little higher?
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Well if that is the recommended voltage it will obviously be safe at that point, so a little extra shouldn't hurt. The only thing is you will invalidate your warranty by exceeding the manufacturers specs. If it were me I would try and extra step up and see if it made a difference. If it worked then fine if not then return it to standard voltage. Of course the decision must be yours.
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I would also try increasing the tRFC value as higher values are needed with all 4 slots populated. Bumping the north bridge voltage slightly may help also. I have seen P35/P45 chipset boards that will not run all slots populated at full rated speed. As a last resort try dropping down to DDR1066 and see if it fixes the problem.
Bill
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MCH Voltage will also need increased for 4-8GB, on P45 you may need 1.24-1.32 MCH voltage for 8GB