Overclocking RAM and CPU

Runningkid · 24 Feb 2006 at 17:58

just another noob question really, but help is needed

wen i oc my CPU do i need to oc my ram to the same? for full potential?

weescott · 24 Feb 2006 at 21:09

in a word. yes.

Explicit · 24 Feb 2006 at 22:05

Although you may want to use a divider if your RAM is pc3200. Ideally you would be at 1:1

Runningkid · 24 Feb 2006 at 23:11

but as i got value ram (hynix cheap stuff) i cant overclock it very much, does this restrict my CPU overclocking?

Explicit · 24 Feb 2006 at 23:24

It wont restrict "overclocking" because you can use a divider to keep the ram at its recommended speed, but you might restrict "performace" (but only by a negligible amount).

Runningkid · 24 Feb 2006 at 23:28

o i c, so is it best to over clock the CPU to what ever the RAM's maxium is? so they can be sync and 1:1?

soz for my nobbiness

Explicit · 24 Feb 2006 at 23:52

Runningkid said:
o i c, so is it best to over clock the CPU to what ever the RAM's maxium is? so they can be sync and 1:1?

soz for my nobbiness

Yup, those looking for uncompromised performance would be running at a 1:1, maybe consider the Gskill pc4000 as they seem quite cheap.

Read this thread for a good explanation of how it all works:
http://forums.overclockers.co.uk/showthread.php?t=17540840 (start at post 3)

iraiguana · 25 Feb 2006 at 15:00

but it would not be too much of a problem if you overclock with what you have and simply put ure ram on a divider so that it does not go much above its max ( so as the divider makes the ram run at a set fraction of the speed of the fsb for the cpu, you can get the cpu to oc with the ram at roughly the same speed)

Runningkid · 25 Feb 2006 at 15:57

cool, do i find the divider in the bios?

farooqm · 25 Feb 2006 at 16:46

Runningkid said:
o i c, so is it best to over clock the CPU to what ever the RAM's maxium is? so they can be sync and 1:1?

soz for my nobbiness

Noobiness or nobbiness

I would use your existing mem and run it on a divider. If you're not happy with performace then I would pay the extra and go get a decent 2Gb set.

Yep... dividers are set in Bios, depending on BIOS they have different names, on my Asus they are called:

DDR400=200Mhz=PC3200=1:1 - so if FSB set 200, your RAM will be at 200Mhz
DDR333=166Mhz=PC2700 - so if FSB set 200, your RAM will be 200*0.83 = 166Mhz
DDR266=133Mhz=PC2100 - so if FSB set 200, your RAM will be 200*0.66 = 132Mhz
DDR200=100Mhz=PC1600 - so if FSB set 200, your RAM will be 200*0.5 = 100Mhz

Hope i've got the math correct on these

Not sure what they will be on yours.

boosfuk · 25 Feb 2006 at 17:53

In my limited experience overclocking RAM shows noticeable increases in benchmarks but make negligible impact on real world usage. Also running a divider usually means you can keep the memory timings tight which A64s like (you did not say what you have).

Runningkid · 25 Feb 2006 at 19:46

ok cheers

and its noobiness! my mistake!