new ram stops overclock

[j.col]

hi guys i have a strange problem.

i have an E3300 with 12.5 multiplier, 200 fsb the stock speed is 2.5GHz
before i could overclock it to 255MHz fsb (nearly 3.2GHz)
on a Foxconn G41MX-F 2.0 mobo and 2gb (2x1gb) of cheap crucial ddr2 pc2-5300 ram.

my problem is i have bought 4 gb of Geil Black Dragon 2x2gb pc2-6400 800MHz latency cas 5 5-5-5-15

now i can't get past 210Mhz fsb in my overclock, or i get a bsod.

i have tried upping the voltage by 0.1, 0.2 and 0.3, i cant increase higher than that. but it makes no difference.

i ran memtest85 for 15hrs with no errors on the geil ram.

any ideas, what i am doing wrong?.

if i do the optimised defaults in the bios, it makes the ram go to 3-3-3-9 then it wont even boot and i have to clear the cmos
then i have to manually input the timings


also the ram is rated at 5-5-5-15, but in cpu-z it says 5-5-5-18.
also ignore the foxconn pic, its just me double checking volts and freqs.

By jcol at 2010-12-06

 

[j.col]

hi settler, i am not sure if i know how to do this

edit. as far as i can see i have no option to increase the cpu or NB voltage in bios

 

[j.col]

i have increased the ram voltage by 0.2v
and i took the dram frequency off auto and set it to 667MHz.
then i set fsb to 240 and its booted fine.
i have just run a quick 15min OOCT linpack test and it came back with no errors.
i will run a proper one later or prime95.

but looking in the foxconn app, i see that my dram frequency is 800mhz.

at a guess, is this the mobo?
it cant go much higher than 800mhz?

 

[j.col]

As your running 4 memory sticks youll need to increase the NB voltage a bit, 4 memory dimm's place a bit more strain on the NB, so a bit more voltage is required.

sorry mate i didnt make myself clear.
i only have 2 ram slots on the mobo. i have replaced 2 x 1gb with 2 x 2gb

 

[j.col]

sorry to hear your having trouble with the ram you bought from me j.col. They were extremely stable on my PC (mobo P5K-E wifi).
I think the rated volts is 1.8v and in my bios settings i always left that on auto.
When i was OC'ing my ram i set it 1:1 with the FSB, where my FSB was 450. Hence Ram ran at 900Mhz. From your small image it looks like you've set the FSB ratio to 1:2. If you've got your FSB to 240 wouldn't that mean the ram is effectively running at 960Mhz? (240*2) *2? I might be wrong here.

Let me know how you get on mate.

hi mate, thanks for advice, i sent you email

 

[j.col]

i just put everything back to auto, and its working again
and yet the other day, on auto settings my pc wouldn't boot

i still have a FSB:dram of 1:2 but i don't think i can change it on this crappy mobo. or is it a math question? like "In order to run 1:1 the RAM needs to be half the speed of the FSB such as 1600FSB and DDR2 800 or 1333FSB and DDR2 667."
if so what are the settings?

i have got the pc stable to fsb of 250Mhz but will run it at 240Mhz

By jcol at 2010-12-06

 

[j.col]

i have been googling and learning.
it seems that as my cpu only has a 200MHz FSB this will limit what i can reach.
thanks any way simon for the help

i am happy with 3.0GHz on this chip, i can get it to nearly 3.2GHz but i like to hold back abit

i knew it wasn't the ram, it was just my inexperience

 

[j.col]

thanks bigwayne
so basically the cheap ram runs better on my board than "proper" ram

if i got a Q6600, will this help my "proper" ram?
if i run the Q6600 at 333x9? what will be the affect.

going by the chart above, running the fsb at 333 should get me 1:1 at 667mhz
or 6:5 at 800mhz

3:5 as 333/3 x 5 = 555 or 1100mhz

 

[j.col]

thanks guys for the excellent help