New Discovery with Conroe IHS's!

OK, I don't know if this has been discussed or what it means. Let me first preface this with the fact that I ordered 2 OEM 6700's from clubit.com. Second, I have no idea if this is an OEM thing or includes retail CPU's as well. My 2 6700's have DIFFERENT IHS's. The codes for each CPU are very similar and come from the same plant. Here are the codes for each CPU:

SL9S7 L624A584 - Very sharp EDGED IHS and looks wavy near the edges
SL9S7 L624A586 - Very beveled EDGED IHS and looks very flat, like every RETAIL Intel CPU I have ever owned - this is my first buy of Intel OEM's.

It would be interesting to see if any RETAIL Conroes have this 'sharp' edged IHS. Is the beveled edge CPU a Retail reject? This could mean nothing, but I do find it odd for intel to clearly be using 2 different style IHS's especially with one being flatter. My gut feeling is that most OEM's will have the sharp edge to the IHS while the beveled edge will be for retail. Maybe I'm just insane too, IDK! Anyway, here are some pics to show what I am talking about. It is hard to see the non-flatness of the sharp edged CPU in the pics but believe me, it looks like a rippled pond :(

http://www.anonforums.com/builds/670...sidebyside.jpg

http://www.anonforums.com/builds/6700/6700sharp2.jpg

http://www.anonforums.com/builds/6700/6700bevel.jpg

probably somehow slipped passed QC cus the IHS probably goes through some kind of machine to polish and finish.

weird...

well the beveled edge may look flat, but mine wasn't and I lapped it so it's all copper now and really flat.

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Originally Posted by Pandamonia

probably somehow slipped passed QC cus the IHS probably goes through some kind of machine to polish and finish.

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I agree, I think it was supposed to have its edges bevelled and wasn't noticed at quality control.

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Originally Posted by lawrywild

I agree, I think it was supposed to have its edges bevelled and wasn't noticed at quality control.

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I hope that is the case!

Maybe contact Intel and get an answer. If you play the "I think something wrong with my CPU" they might tell you something. Probably what everyone else said...a slip in quality control.

the retail cpu is not flat at all.. at the first look it might seems flat, but if look carefully, it is concave.. and that makes the contact very poor :(

yes lapping is the answer, but cant we complaint to Intel for selling such horrible IHS?

Everyone speaks of how concave the IHS is.. can someone post a picture to show the spread of thermal paste using the stock HSF? Maybe the mounting pressure is enough to flatten the IHS a little bit?

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Originally Posted by zoob

Maybe the mounting pressure is enough to flatten the IHS a little bit?

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lol?

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Originally Posted by zoob

Everyone speaks of how concave the IHS is.. can someone post a picture to show the spread of thermal paste using the stock HSF? Maybe the mounting pressure is enough to flatten the IHS a little bit?

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sorry but i'm too lazy to reopen my zalman cnp9500(issit correct, forgot the name already :D)

but in my case, artic silver i used remain at the same place when i opened the stock hsf a day after. and the base of the hsf looks very clean..

i also tried scythe ninja, and same thing happen..

since the center of the IHS is deeper than the side, so i might do some lapping at the edge of the IHS, to make it on par with the center of the IHS. i dont want to lap the whole IHS bcoz the wordings on the IHS will disappear :D

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Originally Posted by zoob

Maybe the mounting pressure is enough to flatten the IHS a little bit?

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We have a winner....too bad stock Intel mounting system can't provide quite enough pressure (because the boards can't take it....unlike boards of yore, the LGA775 boards do not like to warped in the slightest). The best way to get it flat is to lap it. When I lapped my E6700ES, took quite some time to see scuffs (320Grit) in the center.

As for the sharp edges....definitely looks like a QC boo-boo.

There are several possibilities. I think lawrywild is probably right...sort of. It missed something in the manufacturing process, but they clearly let it go for sale anyways. QC probably determined that it was in good enough condition to sell---maybe not as a retail though. Even if such an IHS turns out to be a rarity, I think it shows that blips occur in OEMs if nothing else.

i think they probably contracted out another OEM to make those IHS's.

Maybe the two different oems have different process to make them... dunno

good photos tho

Does anyone know how thick the IHS cover is? A very bad ripple due to sharp edges might not be removed (with lapping) if the lap would remove too much material. Thickness sounds like an important piece of information. Anyone??

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Originally Posted by Kango

Does anyone know how thick the IHS cover is? A very bad ripple due to sharp edges might not be removed (with lapping) if the lap would remove too much material. Thickness sounds like an important piece of information. Anyone??

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Lets just say I doubt it's THAT bad..

Here are some pics of my Conroe E6600 retail B2 ...

http://gallery.weyland.be/v/Computer...ware/C2D/core/

It's not at all concave like some others ...

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Originally Posted by selder

Here are some pics of my Conroe E6600 retail B2 ...

http://gallery.weyland.be/v/Computer...ware/C2D/core/

It's not at all concave like some others ...

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You can hardly see anything from the angle you've taken those pictures from.

the camera needs to be at the level of the top of the IHS with a lamp on the other side of the blade...

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Originally Posted by lawrywild

You can hardly see anything from the angle you've taken those pictures from.

the camera needs to be at the level of the top of the IHS with a lamp on the other side of the blade...

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True ... but I'm not gonna dismount my Zalman 7700 just to proove it's flat as a ... < insert really flat thing here > ;)

QC failed, bottom line I have seen worst then that with dents on the corners.

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Originally Posted by selder

Here are some pics of my Conroe E6600 retail B2 ...

http://gallery.weyland.be/v/Computer...ware/C2D/core/

It's not at all concave like some others ...

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Selder, your IHS is like my SHARP ONE!! This proves that it is NOT a QC issue... some are sharp edged and some are beveled! Take this one for example:

http://gallery.weyland.be/v/Computer...68f5464368031c

And we have another over at OCF also with the sharp edges...:o...this certainly looks deliberate.

My retail E6600 has the sharp edges and was REAL flat. I lapped it and was amazed that the first pass on the ol' wet or dry scuffed the entire thing. VERY FLAT for an IHS. Now the south brdige however, that took some sanding.

That is really interesting, why would Intel switch IHS's? Are the newer ones cheaper? this really confuses me :confused:

Looks like a different machining process in that the sharp edged IHS is actually CNC'd from a billet whilst the other is pressed like how a coin is made...

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Originally Posted by lv_dicedealer

Looks like a different machining process in that the sharp edged IHS is actually CNC'd from a billet whilst the other is pressed like how a coin is made...

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I just got an Retail E6600 L624A819 today. Package date: 7/29/2006.

Sharp edges, looks really flat.

Yeah, seems like the sharp edged ones are flat :D Yey Intel!

what does oem stand for im about to order one for clubit since i tried tigerdierct but they canceled my order?? no clue why but i tried calling em there not open


like what is the diffrence between oem and retail?

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Originally Posted by whoodiestyle

what does oem stand for im about to order one for clubit since i tried tigerdierct but they canceled my order?? no clue why but i tried calling em there not open


like what is the diffrence between oem and retail?

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OEM has very short warranty, comes with no fan. Get retail!

Orignial Equipment Manufacturer = OEM

OEM doesnt come with the longer warrenty and no heatsink. Retail comes with a longer warrenty (3 years?) and a heatsink/fan.

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Originally Posted by derektm

OEM has very short warranty, comes with no fan. Get retail!

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know any places i can order a retail at with paypal im tired of waiting and willing to pay the cost if reasonable

*edit* nevermind

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Originally Posted by zoob

Everyone speaks of how concave the IHS is.. can someone post a picture to show the spread of thermal paste using the stock HSF? Maybe the mounting pressure is enough to flatten the IHS a little bit?

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I wish I had taken pictures... basically only the outside edges were making contact when I placed a very thin layer of AS on my heatsink and mounted it. About 15% of the IHS was making contact... that's it. Had you just taken a rice sized grain of AS5 and put it in the middle of the IHS, it's no surprise you'd get very high temperatures, as the AS5 would never even make it to the edges, were the contact is, and there'd be such a large gap in the center that thermal conductivity would be poor. Simply applying more pressure to try to flatten it doesn't work, you must lap it.

As I lapped downward, I also noticed that there were four raised areas near too but not at the edges, one in each corner. These are the last areas to go to copper when you are lapping. Eventually you will see 4 dots on your IHS.. nothing really special about it, just worth noting.

I hope all coolers cover the IHS entirely or they arent going to be conveying as much heat as they could, flat or not

can someone teach me or tell me what's the important thing to lap this IHS? like the sandpaper grade, precautions i should take..

and seriously, can i just lap at the edge since it is higher than the center?

my 6700ES = normal
6600ES = sharp

i have another question here.. for those who has flat IHS, is ur Coretemp and speedfan / motherboard software shows a same temp?

bcoz for me, i have 10c difference between CoreTemp and speedfan/easytuner..

please lmk temp difference between the 2 and more importantly any temp differences seen between oem/retail
my 2cents is OEM will have flatter heatspreader. I base this not of fact, but on intuition as OEM coolers in DELL, Compaq etc.. tend to be uber crap, ever moreso than Retail coolers. OEM customers like Dell etc... won't tolerate failures in any degree, so I think(again just supposition) that the OEM if anything will be superior clockers.
I have no facts to go on other than I have 6300 OEM and 6300 retail. OEM clocks on stock air to 3.1ghz at 1.3825v on Gig DS3 and is cool at 46c loaded. 6300Retail clocks to about same or just over, but on water and needs 1.4825v and runs mid to high 50's at load :O, on Biostar Tforce 965. Now this could be between boards, or w/e reason for differing clocks. But an interesting observation non-the-less.
thx

JNav89GT you can NOT compare how a chip clocks or compare temps unless you do it in the SAME SETUP. You are comparing apples to toaster ovens...

This is just like AMD 64 IHSs. I had enough opties to tell you there's a few kinds. There's the ones with very sharp edges that look like the corners are almost raised up, and there's the ones that look like the edges have been grinded down a bit.

Apparenntly it's the same with Intel IHSs.

My 6700 is pretty flat, "beveled" i think, gets great contact even unlapped :)

Two pages for this nonsense...

Just lap them all, beveled, sharp, whatever, who cares. Takes you a half hour and is WELL worth it. So easy even a monkey could do it.

Agreed.

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Originally Posted by Mako88

Two pages for this nonsense...

Just lap them all, beveled, sharp, whatever, who cares. Takes you a half hour and is WELL worth it. So easy even a monkey could do it.

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Dont post if you've nothing to add. I've lapped more CPU's than I care to remember, that is NOT the point of this thread. Thanks for your useless comments :rolleyes:

It looks like the sharp edged one missed a step in the manufacturing process, most likely some sort of press that rounds the edge down. Probabely happened on a monday (hangover), or on a friday when the worker had his/her mind on the coming weekend. Maybe the worker and the QC guy went out and got toasted the night before and let several thousand of them go out the door that way.

So is this way there seems to be a variety of Core 2 Duo temps? If I have to take that damn Ninja out of my case again...!!@#$%@#$%

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Originally Posted by Ron 61

It looks like the sharp edged one missed a step in the manufacturing process, most likely some sort of press that rounds the edge down. Probabely happened on a monday (hangover), or on a friday when the worker had his/her mind on the coming weekend. Maybe the worker and the QC guy went out and got toasted the night before and let several thousand of them go out the door that way.

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I doubt this because the some ES's were like this. I think intel may be using a new kind of IHS that is a bit flatter. Maybe someone could call Intel and ask :rolleyes:

my OEM E6600 I got from Tiger Direct has a sharp edge IHS

I have severe heatproblems with my E6600 Retail. I am suspecting a concave IHS. Tried with two different heatsinks (Zalman and the Boxed cooler). They appear to have only contact around the edges, looking at the imprint it has made in my cooling paste. Have 72°C @ stock vcore & speed, 100% load and boxed cooler.

Is the concave IHS a warranty issue? I will do a "whiteboard pen & paper" test on it later today I guess.

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Originally Posted by Sadolf

I have severe heatproblems with my E6600 Retail. I am suspecting a concave IHS. Tried with two different heatsinks (Zalman and the Boxed cooler). They appear to have only contact around the edges, looking at the imprint it has made in my cooling paste. Have 72°C @ stock vcore & speed, 100% load and boxed cooler.

Is the concave IHS a warranty issue? I will do a "whiteboard pen & paper" test on it later today I guess.

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Only if its severly overheating. :slapass:

brent, u cant deny there are some c2d with concave IHS.. and if the contact between the heatsink and the IHS is poor, ur hsf will not be as hot as it should be.. bcoz the heat cant transfer directly from IHS to the heastink.

I have a 30º rise in temperature from idle to load too... Is that normal? I hardly doubt motherboards read temperatures more than ± 5º of what's really the temp. And a delta value shold be even more accurate?

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Originally Posted by brentpresley

Touch the :banana: :banana: :banana: :banana: HS. If it isn't HOT to the touch, you aren't CLOSE to 70C.

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If there is limited contact between the HS and IHS, it won't be hot at all you know, but your CPU would still be running very hot...

Another sharp edged retail here........its a 6400 though...

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Originally Posted by brentpresley

If the CPU wasn't in contact w/ the HSF, then it would throttle ALL the time. Not just at load. There just isn't enough metal in the IHS to dissipate the heat to keep it from throttling.

If you THINK your IHS is concave, take the bloody thing out and CHECK IT.

First thing I did when I got my E6600. That sucker is PERFECTLY FLAT.

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You know of any good testing methods of flatness? Using a permanent marker pen to color the IHS, then drag it over a paper lying on a flat surface (like a glas table?) to se where the color wears of or not? :confused:

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Originally Posted by Sadolf

You know of any good testing methods of flatness? Using a permanent marker pen to color the IHS, then drag it over a paper lying on a flat surface (like a glas table?) to se where the color wears of or not? :confused:

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Use a very flat object, like a ruler or a razor blade, put it from corner to corner, side to side, see if the center dips.

I ordered a oem 6700 from clubit got it a week and a half ago and it had the old style 775 smoothed edge ihs. maybe they switched the design because they were having problems with so many of the ihs coming out concaved. sounds like the people whove gotten the raised ihs have all had relativly flat ihs on them. :confused:

The E6600 i ordered from ClubIT has sharp edges, but some of the edges are bent up pretty good too :(

My digital camera kinda sucks, but here are some pictures of the contact my waterblock makes with IHS after being screwed down as tight as possible.
The outside doesn't make very good contact, but the center seems ok. The bottom right corner I noticed was bent before I applied the TIM, and clearly shows its lack of contact afterwards.
Attachment 50269

Attachment 50270

I just want to point out one common misconception:

Touching your heatsink cannot possibly tell you if your core has good contact with your heatsink or not. The heat-sink will allways be the same temperature no matter how much or little contact the heatsink has with the core.

Why? Because (assuming that the vast majority of the heat exits via the heatsink), the heat that the core generates has to escape. If there is poor contact, the heat in the core will increase until the balance point is achieved (at the point where heat generated = heat transfered away).

The balance point is allways achieved no matter if there is little or lots of contact, thus the heatsink will allways be the same temp because it is the "only" place where heat escapes from. in other words, if the CPU produces 60watts of heat, the heatsink has to radiate 60 watts of heat out. If it dosn't, then heat builds up until it reaches the point where it does. SO any way you turn it, the heatsink will radiate the same amount of energy away, and as long as the heatsink is the same, the math will be the same regardless of good contact. energy transfered to heatsink / dissapation capacity of heatsink = temperature of heatsink.

(Obviously, heat escapes from other palces too, like the back of the board, but in such small amounts that I don't consider them part of the equation for this example).

So, in conclusion: While touching the heatsink can get you a general idea of your CPUs temperature (relative to the power of your heatsink solution that is), it cannot tell you if there is good surface contact or not. The only way to tell something like that is to compare measurements directly from the core with the temps on the heatsink. The larger the delta, the worse thermal contact you have.

-Stigma

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Originally Posted by brentpresley

Credit card edge comes to mind. :D

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All my credit cards are well used and has bumpy edges ;) Might not be the best thing to measure with or?

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Originally Posted by Sadolf

All my credit cards are well used and has bumpy edges ;) Might not be the best thing to measure with or?

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Stanley blade?

The only option for everyone with C2D is to do a contact test
-tast some TC and spread it over the IHS leaving a thin layer ontop of the ISH
-Place your HS ontop and clamp it down as normal
-wait 2 minutes
-remove the HS carefully, and see what kind of imprint is left on the HS

Do you get full TC, square print on the HS contact surface or is part of that square imprint missing? If so, you can clearly see what portion is not making contact with the IHS.

The reason why I don't use the dollop method is because it's not 100% accurate when determining contact area. Sure it would spread but it doesn't always indicate if the gaps are caused by no contact or spreading of the TS.

interesting finding all my intel lga775 cpus i've had are bevel not sharp

550
920D
955XE
2x E6600 B1 - flat as a board as i lapped them and no diif from before they were lapped in terms of ocs or temps heh

Well, it seems I have the "bevel edge" type of IHS, and using a credit card, it seems like it's flat and nice. But when I color it with a felt-pen, and then rub the IHS on a paper (actually a Post-It so it would lie still and not wrinkle) on a glass table, you see something else. The color is only been rubbed away on the edges of the IHS. :mad: So this I think explains my heat problems, bad contact between the IHS and the heatsink.

As I can see it i have 3 alternatives in order to fix this problem:
1 - use my warranty if possible, to get a new one.
2 - sanding it flat (but losing my warranty?)
3 - Fill the "void" with some super heat conductive cooling paste like Arctic Silver 5, and hope it does the work?

Yeah, that does loook pretty bad. I definately wouldnt choose number 3 as its just a waste of thermal paste and the thickness wouldnt be good for heat transfer. If you know you can lap it nicely, and take a chance that yours is a good clocker, then go for it. If not, its up to you then.

pictures of flatness should be level with the IHS as if you were looking into the horizon

credit cards, particularly used ones aren't flat

my e6400 SL959 - L624A851 has a sharp cornered ihs

and from Eyeballing it if anything it looks like the corners and edges are lower than the rest of the ihs so this one should have decent contact

I received my E6600 (Lot L626) yesterday. I examined it closely to see if it had been used (it's an OEM version and I checked the PCB pads) and whether it was flat or not (this thread made me worry a bit). My CPU had the sharp edges and corners and is very flat. I even applied AS5 evenly across the top and mounted the HSF. After about 5 minutes, I pulled the HSF and examined the spread of AS5. Every portion of the IHS was touched by the HSF and the AS5 was spread evenly. I'm very happy about this, of course. (Sorry, no pictures. My camera is elsewhere, right now.)

I am wondering if this sharp edge IHS is a recent change in the manufacturing process or not? Maybe this is the way Intel is letting us know (indirectly, of course) that there was a problem with IHS flatness and that it has been addressed. Did all this start during a particular work week (26 in my case)?

Kango

E6600 retail L624A816 - three numbers lower than derektm's ;)
Sharp edges, concave? No. Convex if anything :)
Though i am waiting for an XBX and two stick of Team Xtreem in order to test it.

so yeah this is a little off topic, but i just took my 820 out of its box and looked at it, i used a stick of ram to see if it was flat or not and it turns out my 820 is convex, not concave. are there a lot of intels out there with convex ihs's? all of my 775's are beveled as well, 520, 550, 820 and E6300.

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Originally Posted by party animal

Yeah, that does loook pretty bad. I definately wouldnt choose number 3 as its just a waste of thermal paste and the thickness wouldnt be good for heat transfer. If you know you can lap it nicely, and take a chance that yours is a good clocker, then go for it. If not, its up to you then.

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Looks like I can have a new one on my warranty when they get more of them in stock... :banana: !!11

If anything, convex is better than concave, to a point...
Intel probably just changed their manufacturing methods, probably have been listening to the customers again (:woot:)...
Will have my E6600 in about 2 weeks, should make for some interesting tests :)

Best Regards :toast:

you guys dont think intel actually makes the IHS's do you?

They make cpu's, they dont manufacture peices of metal.

They go to the lowest bidder, and im sure they jump from company to company trying to get the cheapest ihs' possible... who would expect them not too?

Same as with AMD, they have serveral very different stock HSF designs, and im pretty sure intel does as well. (and im talking about hsf's for the same cpu, like i had 3 opteron 146, each with an alu hsf, and all 3 were different.)

neither convex or concave are good for IHS. You have to lap them if it's either one or the other.

Slightly convex >> any degree of concavity.

If it's convex, at least it guarantees that at least a portion of where the IHS contacts the core will also be in contact with the HS, eliminating any insulation layer (air or too much thermal paste)

Mine seems really good despite the slight convexity. Really flat at the middle and "sloping" half a milimeter perhaps, if that much at all towards the edge. If the tools i have used for looking are somewhat straight. A two days ld credit card (bad habit of wearing those out :D) and a stick of Mushkin Lvl2 PC2700.

i dont think ive ever had a heatspreader that was completly flat.

even my 1.8a wasnt flat, nor y 2.8c, and my 3x opterons and x23 3800, none were perfect, you want perfect, sand.

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Originally Posted by SlackeR

If the tools i have used for looking are somewhat straight. A two days ld credit card (bad habit of wearing those out :D) and a stick of Mushkin Lvl2 PC2700.

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Use a utility blade. Straighter than a credit card:p:

http://img87.imageshack.us/img87/707...drescx9.th.jpg

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Originally Posted by fornowagain

Use a utility blade. Straighter than a credit card:p:

http://img87.imageshack.us/img87/707...drescx9.th.jpg

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This is a nice blade :banana:

Don't have one around :)
I will see how it turns out when i mount. I never mount without checking the contact anyway..

Can you honestly say a half a milimeter concave or convex on the IHS is going to make your CPU run noticeably hotter? Like +5 degrees celcius or more is noticeable.

And if it's +5 Degrees hotter, wouldn't that amount to about jack all for the average human being? Not to mention Ambient temperatures would have a greater affect on an air cooled system than slight depressions in your IHS?

Quote:

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Originally Posted by Wonkers

Can you honestly say a half a milimeter concave or convex on the IHS is going to make your CPU run noticeably hotter? Like +5 degrees celcius or more is noticeable.

And if it's +5 Degrees hotter, wouldn't that amount to about jack all for the average human being? Not to mention Ambient temperatures would have a greater affect on an air cooled system than slight depressions in your IHS?

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.5mm?!?!? Heck yeah! That's a HUGE gap! Ya better lap that shyzz son!

Quote:

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Originally Posted by Wonkers

Can you honestly say a half a milimeter concave or convex on the IHS is going to make your CPU run noticeably hotter? Like +5 degrees celcius or more is noticeable.

And if it's +5 Degrees hotter, wouldn't that amount to about jack all for the average human being? Not to mention Ambient temperatures would have a greater affect on an air cooled system than slight depressions in your IHS?

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to the first part. Yes I can say honestly half a mm would make your cpu run noticably hotter.

to the 2nd part. for the most part it would amount to about jack for the average human being. luckily the bulk of people who come to post/read here arent average computer users. hence the xtremesystems name instead of mundanenormaleverydaycomputers.org

Mine's fairly flat....slightly raised outside corners...just slightly.

Quote:

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Originally Posted by Wonkers

Can you honestly say a half a milimeter concave or convex on the IHS is going to make your CPU run noticeably hotter? Like +5 degrees celcius or more is noticeable.

And if it's +5 Degrees hotter, wouldn't that amount to about jack all for the average human being? Not to mention Ambient temperatures would have a greater affect on an air cooled system than slight depressions in your IHS?

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Half millimeter? Doesn't sound like much, 500 microns sounds better and its a gaping chasm for thermal conduction.

An average HSF may have a TR=0.17C/W for a 5C delta, that's about 30W of heat. Think of it as 20% of the heat output from an overclocked cpu at load. So yeah 5 degrees is bit more than jack.

A change in ambient of 5C can easily cause a stable overclock to fail. It all adds up, the idea is to remove as many obstacles as possible, heat is first and foremost.

Reference
cpu dT = (cpu load T) - (room ambient T)
Thermal Resistance = (cpu dT) / (cpu watts)

just received e6600 retail - pack date 8/07 - with sharp edges. Maybe all the newest builts have the "new" IHS. Surface is really good on this one - very flat!

im gonna have to pull my e6700 out and take a look now... it did have sharp edges... i do remember that.

and to the previous post about intel not making their own IHS.... why wouldnt they? have you ever stopped to take a look at all their manufacturing facilities... i live near one, and its the size of a small town. Pretty sure they make their own IHS.... quality control issues would be a huge concern if they didnt.

Quote:

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Originally Posted by powertrippin

im gonna have to pull my e6700 out and take a look now... it did have sharp edges... i do remember that.

and to the previous post about intel not making their own IHS.... why wouldnt they? have you ever stopped to take a look at all their manufacturing facilities... i live near one, and its the size of a small town. Pretty sure they make their own IHS.... quality control issues would be a huge concern if they didnt.

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I got both a 6600 and 6300 this week(week 26 CPUs), and have had a 6600 ES step 4.

6300 and 6600ES both have the beveled HS
6600 has the sharper edge HS

Waiting to pickup processor.. I'll let you know which IHS it has.

Wickedld9, nice meeting you at lacledes, my jaw still isnt recovered from those 7950GX2 stock 3dmark's. ;)

Mine looks alright (paste spread out by Intel HS\Fan):
http://img437.imageshack.us/img437/9...1402jpgye2.jpg

Retail E6400, L624A848. Pack date: 7\24\06

That looks nice, im gonna check mine as my temps arent great it must be the ihs or the temp sensor

Hey if you don't want it, I'll sure take it off your hands and make the cooling work.

Interesting find though, that's like something I'd come across and just think I'm being retarded when I thought there was a difference. Good call though, I do in fact wonder what is up with that.

i pulled off my cooling tower (aerocool gt1000... yea i know its a POS). the thermal paste had spread out, but left spots where there wasnt any... not smooth like aggybong's... i cleaned the bottom of the cooler, and it was gold plated and looked like a 4y.o. blind retarded kid lapped it. So, i busted a move on that thing and lapped the hell out of it... two blistered fingers later, and it looks like a copper mirror... even polished it.

i just dont have the ballz to lap my CPU yet... maybe ill lap the 6700 when my 6800 shows up, and ill post the results.

i did take pics of the lap job, but my digital camera's flash is too damn bright, and when i take the flash off, it looks blurry... stupid nikon.

theres something i wonder if we have covered yet...

have we considered that maybe the stock intel heatsinks are CONVEX on the bottom?

i mean just an idea, but you have to look at it from intel's perspective, and think that maybe they dont plan for the 1% of conroe owners using waterblocks...

6700ES S5 left, 6600ES S5 right (sharp)

http://simon.webideal.ca/Bench/6600%206700%20es.JPG

I wish they would just do away with all spreaders. They protect the core but add to the heat or as Cathar put it, they "dull the process of heat transfer".

IMO, all processors should come with a (detachable) shim the exact same height as the core. This way it would still be impossible to crush the core with anything less than a sledgehammer, but it wouldn't inhibit the heat-transfer either.

Too bad that 99,99999% of everyone who buys processors or computers in general don't even know that an IHS is, much less care about how it is implemented =/

-Stigma

I have a retail E6600 L625A481, it has the rounded edges, decided to lap the damn thing, and this is the result, nice temp drop for me. Quite happy with the result, I know my warranty is shot.

http://img67.imageshack.us/img67/6757/temp1gv6.png

http://img205.imageshack.us/img205/9785/tempqg7.jpg