ASUS P5N-E SLI 650i Thread

[PikeyBoy]

Just wanna say hi to everyone first of all. im fairly new to overclocking so some good help should come in useful.
Ive posted two cpu-z pictures. my question is how much does memory timings affect overclocking? my divider is weird i guess. is it better to have the ram at full speed 800mhz or a lower speed with better timings? linked or unlinked?also how can i also increase my overclock can u see better options that i cant ?

thanks for any help people

My system is a P5N-E, 4x512mb Geil, 160gb Sata2, Pentium D915 (2.8@3.5)
Mostly stock cooling except for an old fan from my celeron 400 on the northbridge.

[Christiaan]

Welcome PikeyBoy

When overclocking RAM, relaxing the timings helps. As higher timings allow for a higher memory speed.

And from what I've read on the forums. AMD CPUs prefer tighter timings while Intel CPUs prefer higher memory speeds.

From what I've read on this thread. You want a 1:1 ratio between your FSB and RAM for best stability. This is the claim anyway. Your bus speed is 247 at the moment. Running it 1:1 with your RAM will mean you'll have your RAM running the same speed, 247. That's DDR 494.

I myself have a 1:2 ratio. Meaning my RAM is twice the speed of my FSB, because my FSB is so low. My FSB is only 175, 1:1 with RAM would be DDR350 (too low to my liking, and a noticeable performance drop), now with 1:2 it's DDR700. Slight overclock from the stock 667 speed.

I run unlinked to manually enter RAM speeds.

Hope I answered your questions.

Feel free to ask anything else.

Oh btw. Go to User CP and add a system so we can see all your system specs.

[PikeyBoy]

Isn't my memory speed 429 @ DDR 858Mhz? This memory thing is bonkers.

[PikeyBoy]

the multiplyer on the d915 is this locked?

[Christiaan]

Your PD915 is multi locked. Only Core 2 Duo CPU's can go one digit lower on the multipler. I think the Extreme Editions can go up as well.

FSB speeds are quad pumped. As shown under rated speed in CPU-Z.
RAM is doubled. Your RAMs real speed is 429, but effectively it's 858.

Making sense?

[Kopi]

Christiaan you've definitely learned alot, and now the torch is passed to you on explaining thiis one, you're doinig a great job

[PikeyBoy]

Thanks for the speedy responses mate top bloke

[PikeyBoy]

Do you think getting a zalman cpu cooler will let me higer my volts? cause i when i up my cpu voltage to 1.3+ i get over 60* full load. ive gotta admit though at the moment some decent thermal paste would probably help me.

[PikeyBoy]

sry for all the questions. anyone know where i can get a SB Heatsink (uk)? Do i need One? also how can i measure the Nbridge temp? on asus pc probe is MB the northbridge temp? if so is 34* hot or okay

[Kopi]

Motherboard temps are measured in a weird way though. The temps there are

Northbridge Temp + Southbridge Temp *divided by* 2. So its the average of the two. As long as it reads below 40c you should be ok.

I have a Zalman CPU cooler, it rocks! I would definitely look into getting aftermarket coolng for your chip.

As for your southbridge, you should be OK without one, but it wouldn't hurt to spend 5 bucks getting a small one.

Dont worry about all the questions, that IS why we're here!