Okay, so I picked this up...

mobo : asus p5kpl-cm
proc : e5200
memory : centon ddr2 800

Now, the problem is, from what I read, the memory divider is locked on this mobo. The highest I've been able to oc this is 3.33 ghz with 12.5 x 266 fsb stable. 3.6 ghz with 12 x 300, not stable. All at stock voltage. People have been able to hit way higher speeds just not with this particular board and ddr2 800 and no one has tried from searching. Also, I had to set the ram to 667 with 2.0 voltage to compenstae for the locked multiplier. I've got three questions.

Would getting better memory help? Such as ddr2 1066 memory

I only have one memory stick available ddr2 800 in single channel. Does running dual channel make a difference in the cpu oc? Or should I just get two ddr2 1066? Only if that is necessary cause I don't want to spend more money then I have to.

And third, this mobo doesn't seem to have a straight "vcore" adjustment. Is this the ICH or MCH voltage? I'm not too sure and would appreciate if someone could explain this weird setup. This is very annoying cause I'm not sure if this is limiting the oc also.

All in all, it's mainly cause this mobo doesn't have a stupid memory divider and/or, I'm not too sure on this, no vcore adjustment.

And a sidenote : I have tried a lower multi with a higher fsb, such as 10x300 fsb and this works fine. If I try any higher fsb with that multiplier it won't work. So I guess that means it's the ram? It is shown to be running at speeds from about 920-1024 mhz, which is kind of high for centon I believe.

I'm trying to figure out if I should just rma this stupid thing back... Seriously...

I've used that board a dozen times for customers. I've always used 800 ram. Your right about the divider and your right about setting it to 667. You've done everything you can for the setup you got. With 800 ram 250/260 is the standard limit that board will go on the FSB. I believe you could get a little more with some 1066 ram, but your better off getting a Asus P5Q instead so you have the full options, and keep 800 ram.


Also on a side note I've seen alot of reviws about the e5200 OC is kinda hit and miss. It may not go much higher as well, but then again you might get lucky and get 4.2. Your best shot would be on a better mobo.

Yeah, I'm probably going to rma this mobo to get one with full features. Didn't realize it was so limited. Also, If I decide to upgrade later with this board I don't want to deal with the limitations I'm already seeing.

Thanks for the reply!

Thats what I would do, if you reallt want to push to the limits. Its a great board, just not a miracle worker. I just got my son a P5Q. I was gonna get the P5Q SE, but it only has 4 phase voltage, where as the P5Q has 8.

I got a friend that has a P5Q Deluxe with 4g of 800 ram for sell for $200. That is a steal if your interested, also the deluxe model has 16 phase voltage. PM me if you want to get in touch with him.

Wow, that is a steal. Unfortunately, my case only accepts matx motherboards. Otherwise, I'd be all over that deal. Thanks again, I'll probably be looking into the Asus p5q-em matx. Impressive board from what I seen.

Well I'm on my moms new P5Q-EM right now, and it is a real impressive matx board. I got a e1200 in it 1.6 Overclocked to 3.2. 100% overclock. It is running Visat 64 with 4G of ram and it can play Blu-ray rips just fine.

I've seen people having issues with dedicated Video cards, but I use onboard video so I can't tell you.

We actually sold that mobo ram combo for $150 on Ebay last night.

what voltage did you run your E1200 at roadrunner?

1.35

wanna see mine?

http://cid-1532ae9d192e3fbe.skydri [...] wsignin1.0

cant use any lower vcore.it will just simply fail prime.

Cool. Your temps are about 10c better then mine cause I'm using stock cooler LOL. I tightened my ram to 4 4 4 12 also. I; ve had this thing for 2 weeks wish mom would come get it. Ima have it wore out before she sees it.

this build is for a 40 year old women so i change the multi to 6x as you see in the screenshot as she dont need 3.2Ghz of power!LOL and the temp is under 40C i cant believe my eyes!and surprisingly i OC and UV as well!

LOL. My mom is 58 and she need it all. My son is gonna be 8 and I just ordered his rig with a e8400 E0, and ima try to get 4.5 or so out of it. It is for his B-day next month. His system will be hella sweet when it is built.

what he gonna do with 4.5Ghz?Microsoft Paint?lol

Pretty much. I was gonna get a 3.6 quad but none of his apps are threaded, so I figure I get him the fastes CPU I can get him. And the e8400 E0s are hitting 4.5 on air. I got him a ati 4670 to watch his movies also lol, almost bought him a 4870, but I talked myself out of it.

You got to be joking. Oh man, "none of his apps are threaded" LOL!

Anyhow, I was looking at the settings and I am definitely going to rma this crap back. For how high this chip is going to OC it definitely needs a higher voltage. At the stock 1.24v, I really don't that is going to cut it all. I'm surprised I got away with 3.6 ghz for a while...

Also, I don't think these chips are a hit and miss, all the new low end chips seem to overclock like crazy. Seems to either be a motherboard issue, or wrong settings from the reviews I read. I mean, if it wasn't for the 667 setting, I wouldn't have been able to boot the increase from 3.33 - 3.6 ghz. I got really nitpicky to see how much I could OC.

Temps were pretty stable the whole time too with stock hsf. Probably due to low voltages, but that'll probably change once I get the other motherboard.

Ya I think it looks like you got a good chip. I wouldn't be suprised if it hits 4.0. Let me know how it works out for you, I'm curious.

I was gonna start using them in budget builds but like I said some hit big numbers, some dont. Your already higher then the some who dont, so I think you'll be fine.

Also, I was able to hit 10 x 315 fsb only with stretched memory timings and the highest overvolt. The ram was increased from ddr2 800-1042, and that's centon. I thought I was seeing those numbers wrong with the ram lol.

I guess these are hit and miss chips...

I'll definitely let you know how it goes though.