Need Help W/ OverClocking Asrock 775i65g & e4500

[Home Slice]

Kind greetings to all,

I recently acquired an intel e4500 for free a couple days back and basically wanted to overclock it to atleast 3.2 but unfortunately I cant even make it past 2.86ghz (11x260). Going any higher and I start suffering from major instability. At the moment spending too much money on upgrading my computer doesnt make sense to me because Nehalem is on the horizon.

I know this stuff is ancient but it serves its purpose...The motherboard im using is an asrock 775i65g. The ram is 1gb (512x2) ddr pc3200 crucial ballistix memory with timings of 2.5-2-2-5.

Since only the cpu was a gift im using the stock intel cpu cooler for a P4 631 cedarmill which I previously had in. What I dont get it I used to be able to get my P4 to 4.5ghz (15x300) stable and this cant be stable at anything past 260!! The idle temp on my e4500 is about 34-36 and load is 44-47 so temps arent an issue.

At 2.86ghz my vcore is pretty much stable @ 1.2v. I dunno if im correct in saying this but isnt 1.2 too low? Ive looked in the bios and dont see any option on how to increase the vcore. There are other voltages that can be controlled such as vccq and vccm which Ive set to auto (I have no clue what they are). Is there any one out there that knows how I can increase the vcore on this board?

It seems to me that I need more vcore to get this damn thing stable so Ive looked into Bsel modding and Volt mods but im not sure if they can be performed on this board. I hope some one out there has some experience with this particular board and can help. The highest fsb on this board that is listed in the bios is 300 (300x4=1200) so Bsel modding shouldnt be necessary. I would really appreciate some feedback on what I should do and hopefully I have provided enough information.

 

[myocardia]

Welcome to anandtech. You're gonna have to do the volt mod to get any higher, obviously. And yes, it works with all boards. Your problem is that once you raise both the Vcore and the FSB, your temps are going to climb quite quickly, because of the heatsink you're using. BTW, you're most likely already being limited by your RAM, because of how much lower your CPU multi is now, compared to the 631 Cedarmill. DDR Ballistix usually doesn't like going much past 250 Mhz, even with higher timings.

 

[Home Slice]

thanks myocardia, ill give the volt mod a try. One question though if for some reason the volt mod doesnt work is it possible to remove the material used to connect the pins? What volt mod do you think I should be going for to achieve 3.2ghz. Also if possible could you please link me to a thorough tutorial on what steps should be taken to achieve this mod...Ill be searching for a few through out these forums in the mean time.

 

[VirtualLarry]

Yeah, it's the lack of vcore adjust on that mobo that is holding you back. I have a Conroe865PE board, which is similar, and also no vcore adjust. I top out at 2.8Ghz for my E4400, stable.

 

[myocardia]

I'd probably go by this guide, although the last time I volt-modded a CPU was about ~4 years ago, on an Athlon XP, just for fun: http://forums.anandtech.com/me...id=28&threadid=2151106 As far as what to use, I'd recommend some of this copper tape, because it's cheap and easily removable. Most people in the past have used rear window defogger repair kits, available from most auto parts stores, for $10-15. The more I think about it, though, the more I think you're probably being stopped from going any farther by your RAM.

 

[Home Slice]

Thanks guys I will give this a go tomorrow sometime. I hope your wrong myocardia I really really do. Dont wanna spend money on buying ddr memory when faster ddr2 is soo much less. I agree with your statement about the heat though, Im sure i'll have to upgrade to a better cpu cooler. well Im of to the hot deals section

 

[Home Slice]

I tried the 1.4 volt mod but its a no go. the vid appears to be 1.2v and the mod I tried was for a 1.35 vid so Im not sure what to do. For some reason the stuff I used just didnt wanna dry out all the way it was very soft even after a half an hour or so. I think I might just order some of that conductive tape you were talking about Myocardia.

 

[Home Slice]

*UPDATE* So yea I finally got this god damn volt mod to work. Turns out the mod depends on what your particular cpu's VID is. In my case the VID for my cpu was 1.2 (others will differ). I actually used rear defogger repair kit and regular pvc tape to cover the pins. Through my readings on various sites I found this very interesting excel file which might help others out on their own Vmod adventures. The file is a Vmod calculator. The calculator asks for the Cpu VID and your desired Vcore, then it illustrates where one has to connect pins and which pins need to be covered for the mod to work.

http://www.madshrimps.be/vbull...2d-vmod-calculator.xls

now that I have enough Vcore to boot up at higher FSB I am now being limited by my ddr memory. Unfortunately it seems that Asrock 775i65g motherboards arent designed to deliver more then ~2.75v at stock. Im looking to increase my vdimm to about 2.9v so If possible can any one who has some experience with pencil mods or vdimm mods please provide me with some ideas. Ultimately I want this cpu stable @ 3.3 ghz which on my motherboard means the memory has to run alittle over ddr479.

775i65g (motherboard): http://www.asrock.com/mb/overview.asp?Model=775I65G

BL2Kit6464z402 (ddr memory): http://www.zipzoomfly.com/jsp/...sp?ProductCode=80061-1