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Geil Ultra 1066 don't want to go full speed

post #1 of 11
Thread Starter 
Hello Everyone,

I have problems with Geil Ultra 1066 CL5 memory modules on my Gigabyte P45 DS3L mobo. They are detected as 800MHz modules, and when i try to set their frequency to 1066MHz PC doesn't boot. I looked at product description on geil site and it says that voltage should be in 2.2-2.4V range, byt my mobo set the voltage to 1.8V. I manually set the voltage to 2.2V but still have no luck...

Does anybody here have same issues or can propose solution?
post #2 of 11
Check your timings on the ram.
post #3 of 11
Thread Starter 
Timings are set to 5-5-5-15, same as in product desc.
post #4 of 11
Try clearing the CMOS and reconfiguring using 2.4v.
Your system could be changing the CPU to match the RAM if using a divider, this could be causing instabilities.

EDIT: Also fill in your system specifications then we may be able to help you more.
post #5 of 11
If your sure they say 2.2-2.4 then go for 2.3 and see what happens, and then if that fails go for 2.4v.
post #6 of 11
How many sticks are you using.
You could try 1 at a time and run memtests to make sure your modules are actually good.
5-5-5-15 timings are actually pretty decent too.
Try moving up to 6 in cas....
6-5-5-15
for higher bandwidth like 1066 this will help with stability as well.
Will also ensure they arent tested and specced to run at what the manufacturer is stating though.
Did you also check your motherboard combalibilty list to ensure those geil rams are compatible with your motherboard.
These are just a few things you could try


Edit: Also for maximum stabilty, correct me if im wrong. the devider should be set to unlinked so the ram isnt trying to match your cpu speed. Then make sure your on manufactures bandwidth setting. Or trying using a 1/1 devider.
Edited by Arakasi - 12/16/08 at 4:07am
post #7 of 11
Quote:
Originally Posted by Arakasi View Post
How many sticks are you using.
You could try 1 at a time and run memtests to make sure your modules are actually good.
5-5-5-15 timings are actually pretty decent too.
Try moving up to 6 in cas....
6-5-5-15
for higher bandwidth like 1066 this will help with stability as well.
Will also ensure they arent tested and specced to run at what the manufacturer is stating though.
Did you also check your motherboard combalibilty list to ensure those geil rams are compatible with your motherboard.
These are just a few things you could try


Edit: Also for maximum stabilty, correct me if im wrong. the devider should be set to unlinked so the ram isnt trying to match your cpu speed. Then make sure your on manufactures bandwidth setting. Or trying using a 1/1 devider.
werd
post #8 of 11
Thread Starter 
Thanks for feedback. As soon as i go out from work i'll post detailed spec and check it.

@Arakasi: i've bought dual-channel kit
@tht-kid: will everest report be suitable?

Course of action:
* Bios update
* Reset to default settings
* Voltage to 2.2, freq 1066
* if fails: Voltage to 2.3, freq 1066
* if fails: CAS 6
* after getting stable boot memtest tortures

I noticed issue with memory when i wanted to overclock my q6600 slacr, it went without tweaking vcore to 3.2GHz, but increasing memory speed over 900MHz isn't possible.
Edited by ShaXbee - 12/16/08 at 6:54am
post #9 of 11
I have used the C5Q's for a few client builds..are you using the 2x1, 2x2 or 4x1 kit ? The few sticks I have tested all did fine with 800mhz @ 4-4-4-12 with 2.25v and 1066mhz @ 5-5-5-14 with 2.20v ...
post #10 of 11
Thread Starter 
Reseting bios to default settings helped. Now they are happily running at 1066MHz CL5 with 2.2V. Thanks for help.
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