OK, so I have things overclocked nicely and now want to push it a bit more. Most things are fixed in the BIOS, so I just want to up the CPU clock. Of course as I do that the RAM freq will go up as well. If I change the divider so the RAM is at ~800 rather than the current 1000, can I then up the FSB freq and, as long as the RAM stays below 1000, safely assume that it's the CPU (or possibly mobo) and not the RAM that's the problem. Or is there more at play here?
Changing the Memory divider enough to "rule out" RAM?
- Thread starter sidefxv1
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the lower ram divider in this board is 1:1
so:
if the fsb is at 400 the ram is running at 800mhz
fsb at 450 ram is at 900mhz
fsb at 500 ram is at 1000mhz
no problem in running the Ballistyx at 1000mhz at 2.25V at 18-5-5-5
and the board should take the 500 fsb easely( peraphs you need to up the voltages a bit)
of course at 500fsb you must use a lower cpu multiplier,cause if you use let´s say a multiplier of 8 then the cpu frequency is at 4000 mhz,and most for sure you get no post at that frequency ( then you need a very good cooler for it too)
and with the cpu overclocked you need a higher Vcore, instead of the original 1.35V maybe it need 1.4/ 1.45V even 1.5Vcore if you want the reach the limits of the cpu
so:
if the fsb is at 400 the ram is running at 800mhz
fsb at 450 ram is at 900mhz
fsb at 500 ram is at 1000mhz
no problem in running the Ballistyx at 1000mhz at 2.25V at 18-5-5-5
and the board should take the 500 fsb easely( peraphs you need to up the voltages a bit)
of course at 500fsb you must use a lower cpu multiplier,cause if you use let´s say a multiplier of 8 then the cpu frequency is at 4000 mhz,and most for sure you get no post at that frequency ( then you need a very good cooler for it too)
and with the cpu overclocked you need a higher Vcore, instead of the original 1.35V maybe it need 1.4/ 1.45V even 1.5Vcore if you want the reach the limits of the cpu
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Also some C2D chips can't handle a high FSB(above 410Mhz)
Heh, no problem running at 1000MHz, 10-5-4-4 either
Think I tried maxing the FSB when I first got the system and it seemed at the time to top out at 450. However I think that was without tweaking the voltages... and may have just been a hole there?
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18-5-5-5 it´s a conservative figure,just to stay in safe side....
they could run at 1000mhz at 12-4-4-4, but is not so guaranteed
no at 450fsb should not have any fsb hole
but if the cpu is with the multiplier at 8 then is running at 3600mhz ,wich is a great overclock for you E6420 (not all chip´s could run at that speed,only the good clockers reach that)but it may need 1.45V maybe 1.5Vcore to run at that speed
also the chipset voltage may need a little upper voltage
only way to now is try one thing at a time
for example my Xeon 3050 ( wich is equal an E6400) originally with stock speed of 2130 mhz ( 266x8) reach it´s maximun around 3900mhz with 1.5Vcore ( 485/490 x8),but the others voltages on the bios must be tweaked also in order to get it stable
they could run at 1000mhz at 12-4-4-4, but is not so guaranteed
no at 450fsb should not have any fsb hole
but if the cpu is with the multiplier at 8 then is running at 3600mhz ,wich is a great overclock for you E6420 (not all chip´s could run at that speed,only the good clockers reach that)but it may need 1.45V maybe 1.5Vcore to run at that speed
also the chipset voltage may need a little upper voltage
only way to now is try one thing at a time
for example my Xeon 3050 ( wich is equal an E6400) originally with stock speed of 2130 mhz ( 266x8) reach it´s maximun around 3900mhz with 1.5Vcore ( 485/490 x8),but the others voltages on the bios must be tweaked also in order to get it stable
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