E6420 - What multipler?

bloodline76 · 23 Jul 2007 at 09:38

My multipler is set to 8 on this in bios. Is this the correct multipler or can I raise this?

melbourne720 · 23 Jul 2007 at 09:49

No, its locked upwards. You can lower it if you want though.

bloodline76 · 23 Jul 2007 at 11:31

melbourne720 said:
No, its locked upwards. You can lower it if you want though.

Is there any point in lowering though? Would you lower the Multipler and raise the FSB?

paradigm · 23 Jul 2007 at 11:44

bloodline76 said:
Is there any point in lowering though? Would you lower the Multipler and raise the FSB?

Can result in a faster system, especially if it means that your RAM is running at a higher speed.

melbourne720 · 23 Jul 2007 at 12:06

bloodline76 said:
Is there any point in lowering though? Would you lower the Multipler and raise the FSB?

Spot on. Say for instance you CPU had a maximum overclocked speed of 3.5 GHz, and your RAM had a maximum speed of 500MHz. If you had your multi at 8, then the FSB would be at 438 (rounded up) and you RAM might be slightly slower than its stock speed if it was on a 1:1 ratio.

However, if you dropped the multi to 7, you could up the FSB to 500 and run the RAM at 1:1 with the FSB. Also the bandwidth of the system would be higher (500 Vs 438) for the same CPU clock speed (3.5GHz).

Your CPU stress would be the same, the FSB would be under more stress.

vocch · 23 Jul 2007 at 13:44

I much prefer running with high fsb that's why i stuck up till now with my E6300....higher bandwidth = quicker system...here's what i got in sandra when i had my E6600 running with 7x multi...when using 9x i think it was somewhere around 5.x k.

bloodline76 · 23 Jul 2007 at 13:55

So with my setup in sig. What would you recommend i try.

At the moment I havent touched the voltage. And running at 325x8.

I would be happy if I could reach 3ghz.

So try 7x430? That would push it just over.

Barry1337 · 23 Jul 2007 at 13:57

How do i lower the multi on my asus p5b deluxe

vocch · 23 Jul 2007 at 14:11

bloodline76 said:
So with my setup in sig. What would you recommend i try.

At the moment I havent touched the voltage. And running at 325x8.

I would be happy if I could reach 3ghz.

So try 7x430? That would push it just over.

Yes m8...the only way is to try and see how far you can go...not sure how good the value ram is or what extra vdimm you can give...it's either 1.8-1.9v or up to 2.1 but check first before giving it xtra v's.

bloodline76 · 23 Jul 2007 at 14:19

vocch said:
Yes m8...the only way is to try and see how far you can go...not sure how good the value ram is or what extra vdimm you can give...it's either 1.8-1.9v or up to 2.1 but check first before giving it xtra v's.

I dont want to touch the volts at the moment as Im pretty new to this. Will try the lowering of the multiplier first and come back with results.

vocch · 23 Jul 2007 at 14:27

I you are new to overclocking then maybe you should look here.

http://forums.overclockers.co.uk/showthread.php?t=17612922

bloodline76 · 23 Jul 2007 at 19:02

Got up to 345x8 which is limit.

For some reason it doesnt like multiplier of 7. tried at 400x7 but didnt start.

Suggestions?

bloodline76 · 24 Jul 2007 at 11:33

bloodline76 said:
Got up to 345x8 which is limit.

For some reason it doesnt like multiplier of 7. tried at 400x7 but didnt start.

Suggestions?

At 345 this isnt stable. Crashed when I tried to play a game. Have gone back to 325 which is ok.

Now normally I wouldnt be too annoyed with this if I got the chip new but I got this off someone who states that it reaches 3.2ghz.

Have I been ripped off or am I doing something wrong?

melbourne720 · 24 Jul 2007 at 11:56

You need to have manual control of the voltages (specifically VCore, FSB and Memory) and let us know what temps you get under TAT under orthos blend load (and you need to test with 30mins orthos blend).

bloodline76 · 24 Jul 2007 at 14:36

melbourne720 said:
You need to have manual control of the voltages (specifically VCore, FSB and Memory) and let us know what temps you get under TAT under orthos blend load (and you need to test with 30mins orthos blend).

Ok is Orthos a download? I'll google and report back

Thanks

melbourne720 · 24 Jul 2007 at 14:49

bloodline76 said:
Ok is Orthos a download? I'll google and report back

Thanks

Orthos is basically your No. 1 overclock verification tool (yes, it's a download). It basically is a front end for running and auto-checking prime 95 runs on both cores, and allows you to stress CPU, or CPU and RAM.

You overclock, and then you run Orthos on 'blend' for 30 mins and this will give you a certain confidence in the stability of your system. Then you can overclock more.

bloodline76 · 24 Jul 2007 at 22:33

Run it on 335x8 for nearly three hours and passed. Temps went up to 55.

Still unsure on what i should try next. Doesnt let me go to 350.