E6300 P5B seems to get stuck at 315FSB

[nwavedesign]

I have the following rig:

E6300 stock cooling
Asus P5B Deluxe
500W Power Smart 2.0 PSU (come with antec black soho case)
Generic DDR2 667 Memory 2GB
1900XT 513MB

I tried overclocking by basically setting the FSB higher in BIOS and leaving all other settings to auto. The overclocking goes up no problem to FSB 315 (2.2Ghz, 43C core temp and cool to touch) but if I go up to 316, it starts the fan spinning fast and doesn't boot. I have read about people hitting the 320 FSB mark and also having this problem, then if they set fsb to 415 or higer it seems to work. Anybody has any ideas, because I want to overclock my e6300 to 2.4ghz which should be easily done. Do I need to manually change the voltage, and what should I change it to? Thanks for all replies in advance.

 

[n7]

I had trouble gettting past about 320-325.

I just jumped to 401, & now i'm happy


Try this:

Set memory timings to very loose.
Try perhaps 5-5-5-18 (& the rest to loose as well).

Try booting @ 7x400+ something.

I might suggest upping vNB & vFSB too, but if you leave them auto, they will up anyway...

I'd just try skipping the 300s though

 

[nwavedesign]

If I just skip to 400's that 2.8 ghz and I am on stock cooling. What would my temps be like, I like them to be no more than 60 at full load.

 

[jpeyton]

Try it and report back with your temps.

 

[airedale]

I am just popping in to say I had to do this too. I was stuck in the very low 300's. I jumped up to 405 and it worked instantly.

I am now running 429 FSB @ 1.3625 VCore. That comes out to 3 Ghz. I have a Zalman 9500 and at full load I hit somewhere in the low 50's and idle in either the high 30's to low 40's.

I did have to bump my NB up to 1.55, which slightly worries me with the heat, but nothing bad has happened so far... knock on wood

 

[Brahmzy]

All you guys that are having the 320-380FSB black hole...are you using Allendale's or Conroe's?

 

[airedale]

Well, since this is an E6300 thread, i'd take the wild guess that it is the Allendale chipset

 

[Some1ne]

Yeah, search around, a ton of people with the P5B deluxe have problems with FSB settings in the 320 to 380 MHz range. I had the same issue, and am now running my E6600 @ 425x8...so the problem would seem to occur regardless of which CPU core you have.

Edit: and incidentally, there's another similar bug that kicks in around the 440 MHz mark. Anything near/beyond that, and the system becomes unstable again, even if I drop the multiplier down to the lowset setting of 6x.

 

[lopri]

Not to hijack the thread or anything,

Some1ne: What is your memory speed/timing/voltage at 425FSB with P5B?

Sorry about off-topic.

 

[Some1ne]

I'm running it with a 1:1 ratio, so DDR2-850, and the timings are CL4-4-4-12, with 2.3V. I think it's rated for DDR2-800 @CL4-4-4-12 with 2.1V. I've tested it stable up to a little over DDR2-1000 @CL4-4-4-12 with the same voltage level. It's this RAM here:

http://www.newegg.com/Product/Product.asp?Item=N82E16820231065