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Q6600 Overclock on a Dell XPS 420

post #1 of 11
Thread Starter 
Hey everyone, I really hope I picked the right section, if not, sorry about that! I'm new to forums. Well I just recently got interested in the whole overclocking community and was wondering if anyone would be able to help me out with some questions. And Yes, I have read all the FAQs and threads about OCing on this forum and Guru3d and I think I have a basic understanding of what to expect. Here is my situation. As we all know, Dell has a locked BIOS so the only way I found that I could overclock my CPU was by using SetFSB or doing the pinmod. I did some testing before jumping in and found out some interesting facts about my cpu and specs in general.

My Specs:
Dell XPS 420
Intel Q6600 (2.4 GHZ Stock)
3GB RAM (667 Mhz)
X38 Chipset
Ati 4870 by Visiontek 1GB Edition
Ultra LSP 550W

Well first off, I realized that my CPU had NO thermal paste. (Is that a bad thing?) The reason behind this is that I had actually had never taken off my heatsink for this XPS despite having owned it for two years. A couple of weeks ago I installed a 4870 so to put it in, I had to rewire everything and thats when I saw after taking off my heatsink. I used Intel Burn Test as a stress test and saw that at stock speeds (2.4 GHZ) my Q6600 hit 68 degrees max which kind of worried me. Using Setfsb I managed to get to 2.6 GHZ while only hitting 69 degrees tops. I'm thinking that I should get an aftermarket cooler (or heatsink) and maybe get some thermal paste or something.

On another note, I do game quite often playing Crysis, Metro 2033, and Company of Heroes without any problems with any of my components.

Any suggestions on what I should do? All responses will be greatly appreciated. Thanks!
post #2 of 11
ok for the TIM yes that is a bad thing and if you wanna overclock then yes you should get a aftermarket heatsink. As for using SetFSB if you can make it work go for it but you will be limited because of not being able to change the Vcore or set your ram timings manually as your ram will prob hold you back being at those speeds unless they can overclock quite well them selves but it is highly unlikely for it being a dell.

But if you want to get the most out of that quad try to find a used x38-x48 board or even a P45 as they work great with quads when overclocking them. Avoid P35 boards as they dont do so well with quads for some reason other then that looks good.

And what is this pinmod that you speak of, does it unlock the bios or something?
 
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post #3 of 11
I would HIGHLY recommend that you DO NOT overclock your CPU at all on an OEM machine. They are not designed to handle the extra strain and heat that comes with overclocking.

But if you want a new board (which you should get), then get a GA-EP45-UD3P (made by Gigabyte). It is one of the best boards out there (and at a nice price too) for overclocking Core 2 chips. I have seen guys hit well over 4.0+ GHz on Q9550 and Q9650s, and even as high as 5.0 on an e8500.


And as a note:

DO NOT REPLACE THE STOCK COOLING ON THE UD3P. It is great cooling and does a great job as well. NEVER HAVE HAD AN ISSUE!
Edited by Lord Xeb - 3/20/11 at 9:49pm
 
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Gsvlip Dudyrm
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post #4 of 11
Thread Starter 
Thanks for replying guys. The pinmod (http://forums.nvidia.com/index.php?showtopic=58361) is basically a hardware mod that makes the q6600 run at 3GHZ by taping down one of the metal pins or something. Also, I do have an X38 chipset. Unfortunately my motherboard is dell proprietary so I don't think I can change it. The guys who have done the pinmod say that 3GHZ runs perfectly on the stock cooler for the XPS 420. I found that strange because after a stress test I saw the max temp at 69 degrees. That is without thermal paste of course, which I need to buy.
post #5 of 11
well that is a cheap way of getting it done, I mean if you want a cheap oc that will totally do it, when you dont have the money to get a new board.
 
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post #6 of 11
Thread Starter 
Cool. Do I need to adjust any voltages or anything or will the FSB just do it? Because I was reading up that eventually you have to adjust the vcore and and lot of other stuff along with the FSB speed.
post #7 of 11
i have overclocked on generic mobo's and have never had a problem, but they will limit how high you can go, so if you can afford it, i would buy a used mobo.

download and open cpu-z and see what revision it is.
most Q6600 G0 revision chips will do 3.0ghz on stock voltage,

his is a very basic explanation of overclocking

its basic maths. your Q6600 is rated at 1066mhz. you always divide this number by 4 so 1066/4= 266, this is your fsb.
then your processor (cpu) has a multiplier of 9
so 266 x 9 = 2394mhz or 2.4GHz

unlink your ram, so it stays at stock speeds, you can overclock the ram later

can you raise the fsb?

try rising it to 280
boot into windows
download realtemp and coretemp (google them)
install and run them
then download intel burn test (ibt) and run it.
have a look in task manager and notice how much free ram is listed.

in ibt set threads to 4 (for 4 cores) and then click on custom ram and enter an amount just below the free amount.
eg. i have 2520mb free ram. so i enter 2500 into the custom ram.
run the test for 5 passes. for now, and then at final speed you want, run for 50 passes
keep an eye on temps (do not let it go over 80.c)

if test runs fine, go back into bios, and change frequency (fsb) to 300 and repeat the tests.
keep doing this in 20mhz steps until windows will not boot. then just go back a step (remove 20 from the fsb) to the last stable frequency, OR
just raise the cpu voltage a couple of levels. it should now boot.
its a balancing act, higher voltages will get you higher fsb, but it will also give you higher temps.

q6600 @ 3.0ghz is 333 x 9

edit.
i just reread your post.
PLEASE DO NOT OVERCLOCK ANYTHING UNTIL YOU GET A PROPER COOLER
if you are getting 69.C at 2.6ghz then dont go any higher for now
this forum has a for sale section, you could pick up a decent cooler for about $20.
also for thermal paste i recommend MX-4
Edited by j.col - 3/21/11 at 4:23pm
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post #8 of 11
Quote:
Originally Posted by theriju;12809560 
I found that strange because after a stress test I saw the max temp at 69 degrees. That is without thermal paste of course, which I need to buy.

please tell me you did not run a cpu with no thermal paste eek.gif

i have seen the pin mods, if you think you can do it, as its quite fiddly, then give it a try, ignore post above, just realised you have a locked bios
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post #9 of 11
Thread Starter 
Haha thanks for the reply. Unfortunately yeah, I don't have any thermal paste left on my cpu right now. It previously did have some dell factory paste applied, but that was over like 3 years ago. I actually never took off the heatsink until about a week ago so I had no idea.

I was running Coretemp and Realtemp when I was monitoring my temps and without any paste I was getting about 69 degrees tops (Using Intel Burn Test). Oh yeah, I forgot to ask. Do you think I would see that big of a performance boost going from 2.4 to 3GHZ or would it just be minimal?

What I'm really unsure about is if an aftermarket heatsink will even fit my mobo. From what I hear, the heatsink is dell proprietary as well. frown.gif
Edited by theriju - 3/21/11 at 4:43pm
post #10 of 11
it will definitely help in games that are more cpu speed sensitive, as most RTS games.
 
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