C2D Overclocking Guide for Beginners

[zoltaaaan]

Hi, I'm using an e4300 on an Asus P5NSLI with a Thermaltake BigTyp 120 cooler. I'm pretty sure I followed your guuide step by step, and have managed to get some results, but they were very poor.

I actually got stuck on the "OC for beginners" part of the guide. My problem is that I can't get an FSB frequency higher than 275MHz, if I try 300 or higher, upon reboot at first my screen doesn't even turn on, then it reboots again, and on the POST I get the message "MBO is now in safe mode, please re-setting CPU or RAM frequency in CMOS setup" (XD motherboard english roxx ).
I've tried upping Vcore and RAM voltages but with no success, it's always the same thing. Here are some pics of my bios setup at the settings that manage to boot:

http://img443.imageshack.us/img443/2015/dsc01127sd1.jpg
http://img209.imageshack.us/img209/3521/dsc01128vp1.jpg
http://img209.imageshack.us/img209/148/dsc01129re6.jpg
http://img96.imageshack.us/img96/3126/dsc01130eh2.jpg

Oh yeah, and of course at the 9×275MHz frequency, my system is perfectly stable

[Clunk]

This guide is for Intel based boards. Have a look at this guide, which is for your board

[zoltaaaan]

This guide is for Intel based boards. Have a look at this guide, which is for your board

Whoa, never realised that Thanks!

[Steve B]

have you tried manually setting the core voltage?

[zoltaaaan]

have you tried manually setting the core voltage?

Yeah, up to 1.35V, didnt help, didnt want to go any further at such low frequencies

[zoltaaaan]

Is it possible that a P5NSLI doesnt even boot at FSB frequency higher than 275MHz? I've tried feeding the CPU with 1.425 volts, still nothing... Im really disappointed

[Clunk]

Have you tried that guide that I linked you to?

[zoltaaaan]

Have you tried that guide that I linked you to?

Yes i have, but its not my board, its a P5N32, which is much more overclock friendly I've read some reviews, and it says everywhere that the P5NSLI is a poor board overclocking-wise, and that most people couldnt go much over 3.0 GHz... However, I haven't even been able to reach 2.5

[Clunk]

Well, I'm not sure about that board. I think you will get more people replying if you post in general hardware

[derek21]

I have a gigabyte ds3 p965 rev 3.3 board with a c2d e4400 and 2gigs of kingston value ram currently i have my c2d overclocked to 2.66ghzwith these settings 266x10 vcore is set to auto currently cpu-z says 1.376v for memory fsb dram 1:1 cas# lat 5 clocks ras to cas delay 5 clocks ras precharge 5 clocks cycle time 15clocks overclock is very stable but if i reboot bios beeps then resets back to default settings on everything but if i shut my comp down and wait a sec with overclocked settings it posts fine without any odd beeps and resets? Any Ideas i have the latest bios update installed...oh and clunk whats with that bug thats always in your posts makes me think i have bugs on my screen..lol

[Clunk]

What speed is the RAM rated at? and what voltage have you set it to?

[derek21]

Kingston 1GB 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) 1.8v
with overclocked settings in cpuz Bus speed 266 rated fsb 1064mhz according to easy tune 5 voltage is 2.10 ive left all the things related to voltages set to auto

[Clunk]

Sounds like the RAM isnt at 1:1 to me. And AUTO for the RAM voltage, will just give you 1.8v. I know that you say easy tune is reporting 2.1, but what does the bios say? Are you overclocking in the bios or with easy tune?

[derek21]

According to cpu-z ram is 1:1 and im useing bios for overclocking not easytune i use it for varios readings and also in my bios with voltages set to auto i cant tell what the voltages are unless i boot to windows and take a quick peak at easytune or something like cpu-z also here a pic of the few settings ive changed




After messing around in the bios abit i made a few changes that seems to have completely resolved my problem Also my ram voltage is 1.9v core 1.33 Also my temps have went down by 10c




Oh and thanks for the guide clunk,

[runner_UK]

Hello everyone,

I've read this guide and i am glad to say i found it very useful....... mostly simple to follow !! Thanks for time effort you put into it. when i figure out how to post attachments i will post my bios shots so you can have a check of them. I ve not done this before so it would be for peace of mind.

Cheers Clunk its the best guide i read !!

[runner_UK]

Well until i can get my pics up and running can someone just tell me if the following temps are ok.

I am running Orthos on the stresscpu - stress CPu with Gromacs core and i am using Everest to measure the temps and i am getting the following reading, oh i am running an E6600 @ 3006 Ghz.

At idle i get the following temps. (in oC's)

Motherboard 36
CPU 35
Core 1 30
Core 2 32
Dimm 33

Under the above stress test i get the following.

Motherboard 37
CPU 57
Core 1 53
Core 2 53
Dimm 33

I ve ran the test for a number of hours and it seems fine, was going to try some more OCing but i don't know what the max temp for the cpu is and which temp do you use to read this. I tried to under stand the Tjunction stuff but it hurt my head and is it worth pumping it a bit more or should i be greatful with 3ghz.

Thanks in advance to anyone that replies.