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Overclocking Intel Core 2 Duo E6400

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October 2, 2008 7:19:36 AM

Hi, I have a Intel Core 2 Duo E6400 with a speed of 2.13GHz and was wondering, what would be the implications of overclocking it all the way to 2.6GHz or 2.7GHz?
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a b K Overclocking
October 2, 2008 8:01:00 AM

Smeltz said:
Hi, I have a Intel Core 2 Duo E6400 with a speed of 2.13GHz and was wondering, what would be the implications of overclocking it all the way to 2.6GHz or 2.7GHz?


Umm, your system would be faster :lol: 

Easy and prety safe to do even.
The guide is Here.
Basically, change your FSB to 333Mhz, set your vCore to 1.35v and manualy set your RAM at it's rated speed.
Test for stability with Prime95 and add more voltage as needed up to a max of 1.5v or 75c load.
October 2, 2008 8:29:55 AM

specs would be nice to see if your system cam be overclocked. Im running a DS3 Gigabyte 965 board with a e6400 for a year and a half at 3.2 GHZ. Absolutely rock solid.
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October 2, 2008 10:07:25 PM

mx500torid said:
specs would be nice to see if your system cam be overclocked. Im running a DS3 Gigabyte 965 board with a e6400 for a year and a half at 3.2 GHZ. Absolutely rock solid.


I'm using my previously owned (by me) E6400 to build a new PC. I'm getting the GIGABYTE GA-EP45-DS3L motherboard with an ARCTIC Freezer Pro fan for the CPU, as well as a Visiontek Radeon HD 4870 graphics card and a set of G.Skill 1GB sticks of DDR2 RAM. Would you say that this is an ok setup for overclocking? Also, how long have you had your setup before overclocking it? Would an arctic freezer pro fan be sufficient to keep the heat down?
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a b K Overclocking
October 2, 2008 10:39:03 PM

My E6420 has been running at 3.2GHz for about a year and a half on a GA-965P-DS3. It was at that speed on day 1 and has been rock solid ever since.

The GA-EP45-DS3L is actually rated for a 1600MHz FSB and up to DDR2 1200 RAM. Running your chip at 3.2GHz (8 * 400/1600MHz FSB) would put DDR2 800 RAM at it's rated specs. The only thing that would even be running out of spec would be the CPU. That would be an easy overclock. The arctic freezer pro would be plenty for 3.2GHz. I use a Zalman 9500 which probably doesn't cool as well as the arctic freezer pro.
October 2, 2008 11:22:41 PM

I too have an e6400 and a ds3 rev 1.0. I've gone to 3.0ghz but I can't keep the system overclocked since my soundcard produces a loud popping sound. :( 
Otherwise, if it weren't for that, I would keep the system running at 3.0ghz no prob.. I'd probably even go higher.

Interestingly, when i did overclock, I didn't really notice a difference in performance at all. i was surprised.

If you just follow the ds3 guide in the forumz, it will help out a lot.
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October 3, 2008 3:45:27 AM

Good CPU, Have had 965-DQ6 MB w/E6400 @ 3.2 GHz since Jan 07. Have had no stability problems. Memory is PC6400 @ 1 to 1 Raitio
February 14, 2009 7:06:09 PM

RetiredChief said:
Good CPU, Have had 965-DQ6 MB w/E6400 @ 3.2 GHz since Jan 07. Have had no stability problems. Memory is PC6400 @ 1 to 1 Raitio


sorry for bringing this old thread back as my 1st post nonethless, but all of you guys running your E6400s at 3.2GHz what kind of cooling are you running and what voltage are you running at?

I have mine running at 3.0GHz at 1.35v on air cooling (seeing core temps averaging from 33C-38C idle, depending on room temp). I am running an EVGA 123-YW-E175-A1 FTW mobo.
February 14, 2009 7:52:22 PM

I usually let mine E6400 run at 2,8GHz (FSB=351), Vcc 1,1750V. At this speed I also can run my memories at 4-4-4-4, and right now I actually dont need more speed. A Zalman CNPS9700AT is holding idle temp at 31 degrees and load temp at 47 degrees at lowest fan speed.

However, at Vcc=1,3000V it can work at FSB=394MHz (=3,15GHz). Here my Zalman fan is gaining some speed. Load temp is then 49 degrees. I´m sure I could raise further, just havent had the time or the need yet. Tried at 3,3GHz but wasnt able to get it stable due to my memories (then got load temps around 55-56 degrees and the fan started to work hard).
February 15, 2009 9:31:59 PM

I have a E6300 (1.225V Bios 1.184V Cpu-Z) at 2.6 ghz (from 1.86) load temps never go higher then 50C with a cheap alpine 7pro cooler.
As you see this is a pretty big overclock while undervolted.

My advice is to try pushing Voltages to a really low point, since the cpu will get cooler and live longer, but still do a good overclocked job.

However I don't know if the E6400 does run equally well when undervolted.

February 17, 2009 1:20:56 AM

my computer wouldnt get past the post when I had voltage under 1.25, then untill 1.34 it would blue screen while loading. now at 1.35 it is stable as a rock
February 17, 2009 2:47:37 PM

I´m at 1,3000V (in BIOS) when going 3,15GHz.
January 1, 2013 8:54:16 PM

:o  is it possible in this pc :p 

<<< System Summary >>>

> Mainboard : Gigabyte G41MT-S2

> Chipset : Intel G41

> Processor : Intel Core 2 Duo E6400 @ 2133 MHz

> Physical Memory : 2048 MB (1 x 2048 DDR3-SDRAM )

> Video Card : ATI Radeon HD 3450 (Microsoft Corporation- WDDM v1.1)

> Hard Disk : Western Digital WD2500AVVS-63L2B0 ATA Device (250GB)

> Hard Disk : Western Digital WD1600AAJS-00PSA0 ATA Device (160GB)

> DVD-Rom Drive : Optiarc DVD RW AD-7260S

> Monitor Type : Hewlett Packard HP L2045w - 20 inches

> Network Card : Attansic (Now owned by Atheros) AR8151 v1.0 Gigabit Ethernet

> Operating System : Windows 8 Pro with Media Center Professional Media Center 6.02.9200 (32-bit)

> DirectX : Version 11.00

> Windows Performance Index : 3.1 on 7.9
January 1, 2013 9:34:00 PM

Smeltz said:
Hi, I have a Intel Core 2 Duo E6400 with a speed of 2.13GHz and was wondering, what would be the implications of overclocking it all the way to 2.6GHz or 2.7GHz?


I have an e6400 too, and I got it up to 3.2ghz with ddr2-800 ram and it runs fine and stable at 45c under load! No voltage raising or anything. They seem to be a great chip for overclocking, just get a good heatsink, I'm using a hyper 212 and have had no problems, good luck!
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January 2, 2013 7:41:41 PM

Look at the date this was first posted.
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January 2, 2013 7:41:54 PM

This topic has been closed by Arthurh
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