E6600 @ 3.4

[mullet]

I tryed about everything but this is as far as I have gone to keep the temps under 55c under a load.

I tryed:
Sandra & Super PI
7 x 400 = 2.8
MEM = 6452
CPU = 25895
S-PI = 18s

7 x 450 = 3.15
MEM = 7220
CPU = 28933
S-PI = 16s

8 x 425 = 3.4 < good temps with orthos @54c
MEM = 6971
CPU = 31393
S-PI = 15s

8 x 450 = 3.6 @ 1.55v Temps with orthos @69c
MEM = 7365
CPU = 33188
S-PI = 14s

6 x 500 = 3.0
MEM = 7599
CPU = 27671
S-PI = 16s


http://www.nvnews.net/vbulletin/attachment.php?attachmentid=24023&stc=1&d=1171236965

[Xion X2]

[Edit: Sorry, didn't see that you had ran Orthos. Your temps are pretty good.]

[mullet]

I ran Orthos for 3 hours today. I couldn't keep it under 64c & 73c @ 3.6. I admit im a Intel OC noob.

[mullet]

I read as much as I can but im sure im not using the full load of the memory I have. Im running the ram @ 4-4-4-12 now and the cpu multi is at 8 x 425 1:1.

[Xion X2]

Some chips are better than others. I know that mine's very average. I'm stress-testing it again right now for the first time since I added my 2nd GTX and I'm having to feed 1.475v just to get her to 3.5 stable.

But your temps sound decent. You'll probably want to keep your FSB @ 400 or under on your P5B. It has a chipset strap which loosens up timings once you go over that and decreases overall performance slightly. So go with a higher multiplier if you can.

The issue was covered in great detail here:
http://www.xtremesystems.org/forums/showthread.php?t=114998&highlight=chipset+strap

[Roadhog]

lucky you, I need 1.6v just to hit 3.4ghz

[mullet]

lucky you, I need 1.6v just to hit 3.4ghz

I have about 60% knowledge on what im doing lol.
ram 425x8 1:1 @ 850Mhz 4-4-4-12 <just changed that from 5-5-5-15
cpu multi = 8
Vcore = 1.4
ram = auto
Nb = stock not auto/ lowest volts
SB = stock not auto/ lowest volts
Bios 1004

I can run 3.6 450x8 1:1 @ 900Mhz ( 5-5-5-15 ) but the Vcore @ 1.53 but my temps at idle are 38 to 41 and at load there 64 to 73 which I do not like at all. I ran orthos for 1hr and with errors. I guess for air this is it for me.

[Xion X2]

lucky you, I need 1.6v just to hit 3.4ghz

Yeah, it sucks.. especially when you've invested so much in water, but oh well. Luck of the draw.

And it turned out she failed dual Prime after about 30 mins on 1.475 so I had to increase to 1.5v to be stable at 3.5gHz. Now, she appears to be stable at 1.55v @ 3.6gHz.

[Roch]

Sounds identical to my best, 3.6@1.55, (12 hours Orthos stable). If I keep the radiator's fan at 12v then I can keep the load to low 50's, at 5v it tips over 60...I'm thinking of investing in a larger Rad and perhaps lapping the CPU.

[Dr.Nick]

Better cooling might help out a bit; the 9700 is not that great once you start to raise the voltage. There are much better, cheaper, and quieter heatsinks. With a Scythe Infinity I have never broken 54c @ 1.5v and its a lot quieter than a Zalman. Worth looking in to if you are want to OC a little more or lower temps

Also for my 6600 I have found 400x9 to be the best all around for speed and rock solid stability:)

[slaWter]

Looks good man, temps and vcore are not bad at all compared to my E6600.

[mullet]

Looks good man, temps and vcore are not bad at all compared to my E6600.

Thanks man, I ran orthos for 4 hours and the higest temp I got was 55. Im ok with that.

I ran sisoftsandra again with 4-4-4-12 and got this.

8 x 425 = 3.4
MEM = 7117
CPU = 31393
Super PI = 14s

Dr.Nick I will try 400x9 and see what I get.

I also have a hand held thermal meter and during orthos I put it up against both NB & SB HS and the top temp was 102F, I ordered 2 40mm blue led fans 5cfm each ill mount on both chipset HS's. The one thing I don't under is asus probe 2 has the cpu @ 34c idle but Core Temp beta has each core @ 23c each. I based my temps off asus probe 2 cause that was the higest temp so I went with that.

[SlieTheSecond]

Asus Probe rarely reports the correct temperatures.
Go by either Core Temp or TAT. (Intel's Thermal Analysis Tool)

They read directly from the digital sensor in each core of the cpu.

I've had PC Probe shows +/-10c or more which was incorrect.

[nrdstrm]

I might have a bum E6600 (engineering sample)...Jakup got it to 3.5, I could only go 3.2 semi-stable...I can only run stable at 2.8...though I didn't mess with it too much...Guess I'll try again soon...Last time I tried was in the summer...But damn...it's plenty fast at 2.4 for me anyway :)

[mullet]

Asus Probe rarely reports the correct temperatures.
Go by either Core Temp or TAT. (Intel's Thermal Analysis Tool)

They read directly from the digital sensor in each core of the cpu.

I've had PC Probe shows +/-10c or more which was incorrect.

Ok thanks man. I got my chipset fans put in.
http://digital-resistance.com/gallery/pc-gallery/mulletpc3.jpg

[nippyjun]

To the OP: why set a limit of 55 under load? I'm at 55 idle with my 6600 at 3.4. I reach into the low 70's running orthos. this is using tat to measure the temps.

[Bokishi]

My e6600 heats pretty bad when I go to 1.4v (70c load). I've hit 3.4 ghz with 1.35v (stable under Orthos 8hr) with 65c load.

[SlieTheSecond]

To the OP: why set a limit of 55 under load? I'm at 55 idle with my 6600 at 3.4. I reach into the low 70's running orthos. this is using tat to measure the temps.


Well I would imagine because Intel rates that cpu at 60.1c on the IHS.
But what ever temperature the cores are at, is the same temperature of the IHS.

I won't run my E6400 past 55c either. But I don't plan on buying a new cpu soon, I plan on keeping this one for a while. And I think Intel knows what they are doing when they set the temperature limit :)

[nippyjun]

Well I would imagine because Intel rates that cpu at 60.1c on the IHS.
But what ever temperature the cores are at, is the same temperature of the IHS.

I won't run my E6400 past 55c either. But I don't plan on buying a new cpu soon, I plan on keeping this one for a while. And I think Intel knows what they are doing when they set the temperature limit :)

I thought 85 was the cutoff point.

[SlieTheSecond]

85 Is the Tjunction.

60.1c Is on the IHS.
You can check it out here: http://processorfinder.intel.com/details.aspx?sSpec=SL9S8

I have seen tests done where people measured the heat on the ihs to be within a degree of the heat of the cores.

I am the cautious type tho. I've seen lots of people run their cpu's at 70c or more. But personally I think thats too hot and cutting the life span of the cpu.

[methimpikehoses]

SlietheSecond, I am jealously eyeing your sig with the 10,000+ 3dmark06 score. Have a similar system, but have been maxing out at 8500. I'm not a very experienced OCer though so I think that is where the discrepancy is. What is your RAM voltage at, and your NB & SB?
:alc:

[leemik]

My E6600 does 3.5ghz stable.. boots into windows @3.6 but then crashes soon after.. i clocked it down to 3.4 to keep the temps reasonable (this is all on air)..

Memory is actually underclocked @~760Mhz 3,3,3,9,2t timings.. 1.45V CPU, 2.1V RAM.. temps: 36C idle, 53C full load.. CPU mostly sits in the 45C range on average..

System is an evga 680i, 2gb corsair dominator 1066-8500, evga 8800gtx, thermaltake TMG i1 cpu cooler..

3dmark06 is like 11,3xx ..

I have another 8800gtx coming and a new evga 680i board too (RMA .. this one stopped posting with two sticks of memory :( booo! )

[Dual Core Joe]

Here is my 6600 3.6 info:


http://www.fototime.com/%7B28CB4C99-F1D1-40D9-AEF2-77514F8CE274%7D/picture.JPG

[mullet]

I did some further testing after reading this thread. Wild results.
http://www.thetechrepository.com/showthread.php?t=41

401 x 8 1:1 @ 1604 FSB / Mem was @ 802Mhz Vcore 1.375 @ 3.2 - Idle-34c Load-54 (orthos)
SiSoftware - MEM = 6761/6769
SiSoftware - CPU = 29463/20523
PCmark05 - 7380

400 x 8 1:1 @ 1600 FSB / Mem was @ 800Mhz Vcore 1.375 @ 3.2 - Idle-34c Load-54 (orthos)
SiSoftware - MEM = 7259/7285
SiSoftware - CPU = 29380/20477
PCmark05 - 7421

425 x 8 1:1 @ 1700 FSB / Mem was @ 850Mhz Vcore 1.425 @ 3.4 - Idle-36c Load-58 (orthos)
SiSoftware - MEM = 7172/7196
SiSoftware - CPU = 31203/21777
PCmark05 - 7595

450 x 8 1:1 @ 1800 FSB / Mem was @ 900Mhz Vcore 1.55 @ 3.6 - Idle-40c Load-71 (orthos)
SiSoftware - MEM = 7365/7385
SiSoftware - CPU = 33188/22560
PCmark05 - 7893

475 x 7 1:1 @ 1900 FSB / Mem was @ 950Mhz Vcore 1.425 @ 3.3 - Idle-36c Load-58 (orthos)
SiSoftware - MEM = 7814/7828
SiSoftware - CPU = 30532/21296
PCmark05 - 8528

These temps are based off ASUS probe, I used these temps because they are the highest temps of any temp monitoring software. So as a safe bet I went for the highest temp. Intels TT & Core temp were atleast 10c cooler.

[john19055]

I got lucky with my Core 2 Duo E6600 ,I have a zalman 9500 and have it running 24/7 at 1600 cpu and 800mhz on the memory and it runs solid at 3.6gigs at 1.35v, the bios reports it as 1.31v,It idles around 30c to 32c and in games it runs around 46c to 49c,really according to what temperture my room is.