Geil overclock limits

paniK · 9 Jun 2007 at 12:08

Hey all,

My Geil finally seems stable at 836mhz 4-4-4-12 at 2.0V

Just wondering what this RAM can safely run at. my FSB at the moment is 334 with 2.66multi for RAM which gives me 836mhz. that means my E4300 is runing at 3.00GHz dead. How much more will I get from my RAM you reckon? Cos I can turn the multi down on the CPU to keep that in and around 3.00GHz as I don't want to go further.

thanks

pieman109 · 9 Jun 2007 at 13:03

Assuming its the geil DDR2 6400 ULL, slacken the timings off to 5-5-5-16, and it should go higher. I've had my geil up 925 @stock vdimm, 5-5-5-16.

paniK · 9 Jun 2007 at 18:22

yeah oops forgot to say 1GB PC26400 ULL

WJA96 · 9 Jun 2007 at 20:51

There is no such thing as a safe overclock. By overclocking you potentially shorten the life of components - they could die in a year, two years or two days.

On top of that, every pair of RAM sticks is different. They are tested together as a pair when they leave the factory, but they are not guaranteed to overclock as a pair. Everyone's RAM is different and you could be really lucky and get 1000MHz plus from then, or plain unlucky and get 836MHz tops.

You dial in the voltage, up the FSB and take your chances....

paniK · 9 Jun 2007 at 21:18

i've tried 850mhz on standard voltage and timings and it didnt want to know. so I've stayed on a stable 836 but wanted other peopels overclocks on them

pieman109 · 11 Jun 2007 at 01:33

Like I said did you try overclocking with the timings set 5-5-5-16?

paniK · 11 Jun 2007 at 10:16

not yet, but I will do on my next restart. thanks!

waso_dude · 11 Jun 2007 at 11:06

stock voltage on the Geil is 2.1 so try that first

|22MB|karma · 11 Jun 2007 at 17:05

My Geil 6400 is running at 1096.0 MHz rated FSB (I assume that memory speed)

Its totally stable at 5,5,5,15 @ 1.1

paniK · 11 Jun 2007 at 18:34

my Geil doesnt like 2.1V Prefers 2.0v

pastymuncher · 11 Jun 2007 at 19:16

Got mine happily running at 935mhz using the 2.50 multiplier and 2.2v @5-5-4-15.

paniK · 11 Jun 2007 at 20:17

mine is now running 888mhz 5-5-5-12 at 2.0V

Next step is tighten timings up a bit before I go for more speed. Which timing makes more of a difference to tighten i.e. is 4-5-5-12 better than 5-4-5-12 say??

pastymuncher · 11 Jun 2007 at 20:20

paniK said:
mine is now running 888mhz 5-5-5-12 at 2.0V

Next step is tighten timings up a bit before I go for more speed. Which timing makes more of a difference to tighten i.e. is 4-5-5-12 better than 5-4-5-12 say??

Cas is most important. The one at the begining which is "4" in this case. I very much doubt that you will get it to run at Cas 4 at 888mhz though. You may be able to get 5-4-4-12 but probably no better.

paniK · 11 Jun 2007 at 20:22

right ok. will try that. is there anything that could go bang or break during this though. I mean if I keep pushing, can I fry anything?

I'm assuming if I keep the voltage fairly low then it will be OK.

paniK · 12 Jun 2007 at 09:10

well I tryed 888mhz @5-4-4-12 and it didnt boot so I left it at 5-5-5-12. Migh try increasing the voltage later on but I'm happy for now.

I am a little concerned to find that when I ran memtest the one that runs in windows for about and hour and 15mins it found 17 errors :eek:

RMA?

Ronaldo · 12 Jun 2007 at 12:42

paniK said:
Hey all,

My Geil finally seems stable at 836mhz 4-4-4-12 at 2.0V

Just wondering what this RAM can safely run at. my FSB at the moment is 334 with 2.66multi for RAM which gives me 836mhz. that means my E4300 is runing at 3.00GHz dead. How much more will I get from my RAM you reckon? Cos I can turn the multi down on the CPU to keep that in and around 3.00GHz as I don't want to go further.

thanks

if you dont want your cpu to go any further then there is no point in droppin multi and increasing FSB, at these FSB/Clocks you wont see any difference

paniK · 12 Jun 2007 at 13:15

at the moment my worry is the memtest errors

I was thinking of RMAing this and getting some 2GB in here. Or if not RMAing then I know someone who wants it off me.

pastymuncher · 12 Jun 2007 at 15:23

If your getting errors at 888mhz then it's a good chance that the overclock on the ram is not stable. Try upping the voltage a tadge. If that does'nt clear it then go back to stock timings, volts and speed and run memtest again. If it passes with no errors then you have no grounds for an RMA. You may just have a batch that does not like being clocked. Only thing you could do is to sell it on Ebay or in the MM.

paniK · 12 Jun 2007 at 15:41

right thanks for the advice. will try that. thing is, I know my Geil doesn't like 2.1V

Runs even worse on 2.1 than 2.0v. 2.0v is quite smooth. can run for weeks like that and blue screen once in every 2 weeks or so.

I was running it 800mhz 4-4-4-12 2.1V and it didnt like it. Blue screen once every two days or so. Turned voltage up to 2.2, no change. turned it down to 2.0 and much much smoother. Will try the other slots though since I have never tried them

pastymuncher · 12 Jun 2007 at 19:35

I found that on Geils website for this stuff that they recommend 1.9-2.3v for this stuff. I put mine up to 2.1v right at the begining and manually set the timings to 4-4-4-12 and have had no problems with it at all.