Explain the memory settings to me

Correct me if i am wrong but this is where the FSB and the memory frequecy are set the same. So if you set the FSB to 400 it would be at 1:1 with 800Mhz DDR2 memory (divide 800 by 2 as it is doubled).
 
You can use the memory tab of CPU-Z to check your FSB: DRAM ratio, eg 1:1.

In the bios the information will be presented slightly differently, and might be referred to as the system memory multiplier, ram divider, or words to that effect, but varies according to mobo manufacturer. On my Gigabyte board you need to set it to 2.0 to get a 1:1 ratio, if left on auto it defaults to 1:2 with 200 fsb processors and DDR 800, and quickly takes the memory to unworkable speeds as you raise fsb.

If you use CPU-Z to find your current ratio, it will help you to make sense of the options in the bios - a 1:1 ratio could be described in the bios as 1:1, 2.0, sync or something else entirely, depending on manufacturer. If in doubt read a faq for your mobo.

Its best to leave it in sync until after you've found a stable fsb for your processor. Then if necessary you can raise the divider/ratio to bring your memory back up to its rated speed.

Hope that makes it (a bit) clearer. Good luck.
 
No probs, hope it helps. I've heard some 2180's are not great overclockers, but even so you should be able to get over 250 fsb.
 
I am also a little confused with memory and overclocking.
I want to oc a bit, but not pushing things too much I think.

I will have e8400 which i believe is x9 multiplier - so 333.3 fsb.
I have ordered a low latency 2x2gb ddr2 6400 memory which is 400fsb.

what is a reasonable target? (arctic cooler freezer 7 pro)

Is the best way to put the ratio to 1:1, then overclock the cpu - maybe to 3.6?
and once I get it stable start to change the ratio and speed the memory up a bit if necessary - and maybe changing the cas settings from 4-5?

I don't really want to mess around with voltages.

would 3.6ghz with fsb 400mhz and keeping the memory at that level too be ok, or is there a lot of performance increase if i can boost the memory a little too.
 
maf718 said:
No probs, hope it helps. I've heard some 2180's are not great overclockers, but even so you should be able to get over 250 fsb.
Click to expand...

First time i've ever heard that. The only e2180's that i've seen only overclocked to low speeds are people who are using cheap motherboards like asrock etc. Apart from that its 3ghz +
 
I've had a look at the memory settings on the ip35-e board

default:
1:1.00
1:1.20
1:1.25
1:1.50
1:1.66
1:2.00

It's currently on 1:1.00, should i push it up a notch or two?
 
1:1.00 sounds right for now. At that ratio the memory will be well below stock, shouldn't be holding you back.

You could check the ram voltage. You have ocz 6400 according to your other thread? If so that's the same as mine, I run it at 2.1v to keep it stable. Also check your vcore (I think you said you had already but you could double check) about 0.1v over stock should be plenty.

If that doesn't work, I'm stumped. I have different mobo so don't know the details of your bios settings.
 
mame said:
First time i've ever heard that. The only e2180's that i've seen only overclocked to low speeds are people who are using cheap motherboards like asrock etc. Apart from that its 3ghz +
Click to expand...


I've heard of some that only got to about 2.7 or a bit less, but don't know how rare they are, and whether as you say they were motherboard limited. At the end of the day the parts are only guaranteed by the manufacturer to run at 2 ghz so its posssible some can't do 3ghz.
 
My problem is that when i try and go over 2.5/2.6 and it wont boot, i clear the cmos with the jumper and it doesnt always work. I had to remove the cooler and the chip before it'll boot again, it's a pain in the backside.
 
That would be a pain, I hate refitting my cooler! If nothing else works, and you're sure your voltages are ok, I guess you'll have to stick at 2.5 or so.
 
You must log in or register to reply here.
Back
Top Bottom