Memory 1066

[viper200]

Hi guys
i have 8 gig ddr2 -1066 running at 1.2v safe standard for my ram
problem I’m having is 1 of the 4 sticks don’t like to run at 1066 it runs at 800mhz fine
so what do I do
do i
1.just run 8 gig at 800mhz and be good
or 2.
do i run 6 gig at 1066 and just throw out the gay stick ?lol

what do u think is best option would i loose much performance going from 1066-800

800mhz ram timings
http://img198.imageshack.us/i/test26gigram800.jpg/
1066 ram timings
http://img198.imageshack.us/i/test16gigram1066.jpg/


thanks for help in making this decision

and would this affect my over clocking abilities ?

 

[andy5174]

Try to set the frequency to 1066MHz manually in the BIOS.

It seems like your CPU is a C2D with stock FSB 1333MHz, so 800MHz RAM should be sufficient as 400MHz FSB is already very close to the top limit of OC.

 

[viper200]

cpu is AMD Phenom II X3 720 2.8 GHz be
ocd to 3.6ghz

 

[andy5174]

Then set the RAM to 1066MHz manually in the BIOS.

 

[viper200]

as i said in my first comment

THE RAM is 1066 3 out of the 4 ram sticks run at 1066 fine @ 2.1v
1 ram stick does not it only likes to run at 800mhz stable if i set it to 1066 with it in the system it causes me to crash
so the question is 8 gig at 800mhz
or 6 gig at 1066?

 

[andy5174]

as i said in my first comment

THE RAM is 1066 3 out of the 4 ram sticks run at 1066 fine @ 2.1v
1 ram stick does not it only likes to run at 800mhz stable if i set it to 1066 with it in the system it causes me to crash
so the question is 8 gig at 800mhz
or 6 gig at 1066?

Sell one pair and run the rest at 1066MHz. 4GB is more than sufficient for normal users.

 

[jitpublisher]

It ALL runs at the same speed. One stick cannot/does not run at 800 while the rest are at 1066.
What OS are you using, and what are you doing that you think you need more than 4 gig?

 

[viper200]

YOU are obviously not understanding me

i have 4 x2gig sticks of ram all are 1066 capable
1 stick does not like being run at 1066
if i go into bios and drop memory to 800mhz instead of 1066 with that 1 stick that does like to be run at 1066 it works fine

3 sticks work fine at 1066 1 stick doesn’t like it and only like 800mhz

the question is I’m asking how much performance will i loose from dropping from 1066-800
also loosing dual channel duno?

8 gig ram=800mhz =4 slots
or
6 gig ram =1066 =3 slots

does that make it make it understandable

 

[Devastator_uk]

well with 6gigs (3*2gigs) it'll run in single channel, which would make it slower than 800Mhz dual-channel.
Also AMD CPUs don't officially support 4 sticks running at 1066 and will default to 800.

 

[Devastator_uk]

Also you may be able to run all 4 at say 900MHz or 1000MHz or something which may help.

 

[viper200]

so you're saying to run 8 gig at 800mhz?

 

[andy5174]

You won't see much difference between 800 and 1066. If you really need at least 6GB, underclock all of your RAM to 800MHz instead of getting rid of one stick as dual channel can only be enabled for pairs.

 

[andy5174]

AMD CPUs don't officially support 4 sticks running at 1066 and will default to 800.

No, it depends on the motherboard. For example, this one http://www.asus.com/product.aspx?P_ID=lhJiLTN5huPfCVkW&templete=2

It doesn't even run at 800, LOL.