ram problem

tone12 · 2 Oct 2009 at 18:32

hi,

i just bought some of this ram -

corsair xms2 (2x2gb) pc8500. it has an advertised speed of 1066mhz and timings of 5-6-6-18.

problem is when i configure it to those settings in bios my pc wont even boot up. when i reduced the speed to 1030mhz it boots up but i get blue screens of death.
ive now reduced the speed to 900mhz and the problems seem to have disappeared.

to the matter of my pc not booting up, is this because the ram voltage isnt high enough? and why do i get crashes at the speed i mentioned above?

ive already had the ram replaced so it defo cant be faulty ram. if i keep the ram at a stable speed of 900mhz am i losin out on much performance as opposed to 1066mhz? im just a bit annoyed that it wont boot up with the advertised speed.

Shakeel · 2 Oct 2009 at 19:50

i dont think you will notice any difference in performance. try googling your problem with your mobo and see if anyone has had trouble with these parts

darrenbe · 2 Oct 2009 at 19:56

Check my recent post out.
i was running 4GB of that same stuff at these settings without any issues:
Clock @ x5.33
5T
6T
6T
16T
DRAM Voltage 2.1V

tone12 · 2 Oct 2009 at 20:52

i cant see in bios what my ram voltage is as i have it set to auto. my cpu is at its default 1.31250v.

could that be whats causing the instability at higher speed? should i even bother tryin to get it runnin at 1066mhz or am i just as well leaving it at 900mhz?

darrenbe · 2 Oct 2009 at 22:13

well if you set the DRAM Voltage to manual can you then adjust the voltage to 2.10V ?

tone12 · 3 Oct 2009 at 11:23

the only manual options i have for adjusting the voltage are +1, +2, +3 etc.

dustofnations · 3 Oct 2009 at 11:29

Use cpu-z or similar to find out what the current DRAM voltage is, then +1 is probably adding 0.1v (at a guess).

Definitely sounds like the voltage is set at 1.8, in which case you'll probably need +3, but just do the minimal increase and see what the change in cpu-z is

edit: checked the data sheets and it definitely needs 2.1v for the spec you're trying to run them at

darrenbe · 3 Oct 2009 at 16:39

It all goes ****-up if you try to run 8GB of the same stuff at those settings though.......

tone12 · 3 Oct 2009 at 20:37

ive installed cpu0z and i cant see any dram voltage value. am i gonna see much of a performance improvement in gaming with the ram runnin at 1066mhz as opposed to 900mhz?