Post your 24/7 Core i7 920 and temps under water and what CPU block your using !
Interested to find out the spread that is out there. Some hot and some not...
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Post your 24/7 Core i7 920 and temps under water and what CPU block your using !
Interested to find out the spread that is out there. Some hot and some not...
They can be all over the place. You could get everything from rads that are now outside in Winter Weather, to our Aussie freinds that are now almost into Summer heat. You could get any number of 10's of thousands of different combinations, voltages, OC levels, bench rigs, rigs inside of Towers, rigs inside of Cube type cases.
The one thing I learend the hard way on here is that you'll end up more confused than ever with threads like this. There are just too many variables.
That and you should eat more beans if its cold where you are, free heat.
And I agree with T_flight, as long as you are getting good numbers for your specific build, then thats all that matters :up:
I don't think he's wondering what's good...I think he just wants a comparison...
Or maybe he just wants to take a peak at others temperatures who are willing to post. I haven't started an i7 build yet but I would love to see what the temperature trend is with these chips thus far.
Thats correct... Wanted to see what setups are alreday out there and how well they are cooling for 24/7 setups. I have a 965E cpu in my hands but may go 920 if results people are having is good. Seems they are all over the place from reviews. I'm awaiting some GPU Blocks from Performancepcs.com and havent finished setup.
Anyone running Core i7 yet?
I am running a Core I7 920 O/C 3.8 with Ht enabled low 70's with DD block and Pa 120.2 and MCR120 RAD with 4870x2
Can I ask what your temperatures were with the stock HSF and default settings and OC'ed? And what your temperature were at default setting with water-cooling? If you recored or remember the numbers by any chance.Quote:
Originally Posted by X2beach
Well temps depend on software really, everest return temps on cores 10 degree higher than speedfan 4.37.
Everest values i get :
3.8 1.34 vcore 62 max
TFC exchanger 360, aqua HD DI , mcr 355 + xspc top, microres
well when I was running my Coolermaster v8 my load temps where low 70c also.. I think my 4870x2 is dumping alot of heat in my loop
4ghz
1.344vcore load.
37c idle.
60-65c load.
ek supreme.
tripple rad black gt 360
innovatek passiv.
one gpu block in loop
changing all this with new chassi.
might use only the triple.
1.45 volts 4 ghz 920
40c idle 75C load
TFC360
GTZ block
TFC 120
MCW 60
MCP 355 W/XSPC Res. top
Yates Loon 1700 RPm fans
Was hoping for better temps, but thee i7's run hot.
wow thats really hot.. and you have the Feser RAD..
I think its the 1.45V that making your cpu a Frying pan :eek:
I know!! :mad: 2 Fesser rads 360 for cpu and 120 for gpuQuote:
Originally Posted by X2beach
But this chip is not stable with lower volts, thinking of buying another one maybe get a better chip.
nemon,
I have got my new dual Feser in yet.. I am running on a PA120.2 and MCR120 right now getting these temps
What kinds of temp do u get running 3.8 at like 1.32v ?
Quote:
Originally Posted by X2beach
My cpu is not stable @ 3.8 even with 1.375 volts, boots upto 4.3 at 1.45 volts but will not pass prime 95.
4ghz and 1.45 volts passes prime with 70-73C 1 hour but have not pushed it farther. dont want to burn it before getting another one.
This may be a crapy chip i have. My chip does the same as it did with a 120 ulrta but 20C less.
So no extra OCing with water.
nemon,
I noticed u have the same case I got . and mobo and cpu.. you have any picks of your rig ? I like to get some ideas for my new stuff coming thursday
This is my first WC build. if i had previous EXP. with some hindsight I would have swapped the second rad inlet-outletQuote:
Originally Posted by X2beach
and added a 45 deg vid card outlet to the res. for better hose management.
Since it passed the an 18 hour leak test I will fix it later.
http://i28.photobucket.com/albums/c2...CInstalled.jpg
Oh god, I am NOT liking these numbers at all. 70's? 60's? Even 60's at load is too damned hot! I wanna see no more than 59 degrees at 4GHz at the least and preferably 4.5. If not there is no reason to go to the expense of putting water cooling on these things.
I wonder what is causing these high temps? That is too damn hot to be pouring 500 dollars into a watercooling system and getting those kinds of temps.
Could people please start listing the particulars of their system and what software they are using? If we don't know what software you are using to record temps it's telling us nothing because all these programs give wildly different temps on the same CPU. Core Temp and real Temp vary by 10 degrees alone. Also Room temp, whether you have other blocks in your loop, if you have lapped or not. Without knowing what your running nobody can figure this out.
I know one thing. We need to figure this out. After seeing these kinds of temps, there is no way I'm putting anymnore money into WC gear until we figure out how to get these temps down. There ain't no way I'm running load temps of 65-75 degrees. Especially not with 500 dollars worth of watercoolinmg gear cooling it.
Quote:
Originally Posted by T_Flight
Tell me about it , I spent over 600 on this.
I get the same OC on water w/15 -20c drop as my old 120 ultra and nothing more, now I really think I have a crappy chip
The two I use are Asus Probe II and Real Temps. As you can see an 11 deg. diff. Whats a better progy to use besides direct laser temp?
This is under load prime 95 5 min.
http://i28.photobucket.com/albums/c2...nom/temps2.jpg
nemon,
my setup will be close to yours on thursday.. same pump,and res top.. and same FES360 RAD
Difference I am going to use the Koolance 350 block, and MRC120 Fan.. and PA120.2 Rad on the side panel. and I only use 3/8 tubing..
when you mounted your pump did u have to drill any holes? and is it very loud? you still using the stock 230 fan on the side for airflow?
nemon,
I use Realtemp 2.89.5
are you using large FTT with prime
OH turn off Hyperthreading and watch your temps drop 10C
Quote:
Originally Posted by X2beach
Yes i did drill i hole and used one that was there for the fan.
I can't even hear the pump, I did use the sticky pad on the bottom ,and I am using the 230mm side fan, it helps allot with intake air.
The case is a little louder than before but that due to the 3x120mm 1700 RPM fans on top.
No small FTT, why turn off Hyperthreading? will it till be as fast?
Have you tried running it just with the CPU in the loop? After seeing this, I think running a GTX280 like I have and a Core i7965 is just gonna be too much heat dump in a single loop. I've been leaning that way, but wanna try to get more info.
If anyone out there has tried just a single loop with like a 360 rad of some sort, DDC 3.2, and 38mm fans I'd love to hear what the temps are.
Hyperthreading will reduce heat, but will reduce performance. I wouldn't want to do without it. It might be a good test though just to see what's going on.Quote:
Originally Posted by Nemon
With HT Turned off Games Actually perform better.. and pretty much all benchmarks are higher
I sure do like the - 10C cooler
I am thinking about doing dual loops with mine and thursday
feser360 for cpu
pa120.2 for GPU
I have my 965 @ 4.275, 1.45v, HT disabled
I get 64c under full load at these settings. If you'd like, I could do a prime run at 4.0 with HT enabled and report back my temps...
And you're totally right about performance w/out HT. I get at least 10fps higher in all my games with it disabled up to 45fps in a few :)
sono.. yeah turn it back on and tell me your temps
So i guess running core 920 at 3.8> GTX M184 92mm x2 HWLabs Rad> (3) GTX280's EK > GTX 480 HWLabs Rad> Swift MCP655 Pump just ain't gonna cut it? Son of a .......
480 running SCYTHE S-FLEX™ "F" 120mm 1600 rpm Quiet Fan
:DHT OFF and the cpu is stable @ 4GHZ -1.375 volts and temps lower by 10c.:D
Prime 95 over 1 hour, going to leave it over nite and see if its good for 8 hours.
http://i28.photobucket.com/albums/c2...enom/htoff.jpg
These i7's really are proving to be hot chips. Hoping newer revs will make a diff. Like QX6700 B1 -> B3. :)
core i7 is the hottest CPU i've ever tested
i reckon they are on par with those power guzzling Pentium from a few years ago if not worse
But it seems to take it well. To awnser the OP I just got my i7 920 hooked up under water last night and immediately overclocked it to 4.0 ghz. Right now i'm idling at 45C and full load levels out at about 75C. I have a Swiftech Apex Ultima Water Kit in a Cosmos S. My Rad is mounted to the to (inside the case). As you know this kit comes with the Apogee GTZ Block with 1366 Conversion Bracket which seems to work very well.Quote:
Originally Posted by dinos22
My voltage is set to 1.425 with HT Enabled. I'd say I have a little more head Room to get 4.2 or 4.3 out of it. But I have'nt tried it yet. I'm satisfied with this overclock right now and it's my 24/7 as of right now.
Guys I re-read my post and it sounded like I was moaning after I re-read it. I am not crying about it or anything. I just was kinda shocked, and want to get the best cooling, and do not wanna spend money until I figure these out a little better. I'm not gonna give up or anything drastic like that. :)
I would say it has to be better than water cooling to run this thing. I'm using True copper lapped and temperatures are like 100c load 8 cores prime 95 1.40V full load, prime 4 cores no problems at all.Quote:
Originally Posted by T_Flight
Phase would do wonders to contain the heat of this CPU.
Hello Guys,
I cannot believe that decent watercooling, i.e XFC 240 rad, something like Fuzion v2 would not be able to cool these i920's down. Me thinks it's an issue with getting the heat to escape from those hotspots inside the cpu, which seems to be getting worse with higher voltages - maybe a similar situation to Prescotts of yonder?
I would luv to see you guys use a simple XFC 240, and compare water inlet and outlet temps with a XFC360 or XFC480 for example. I would like to bet that the cpu won't even come close to saturating the capcity of even the XFC240 rad.
Would be nice if you guys can test this out. I am running 2x Xeon 5430 Harperdales, and a 4870X2 with decent results on a single XFC240 - so the results you guys are posting doesn't make sense, and I think that even throwing 2x XFC480's in the loop won't change much, as it seems the heat gets trapped in the cpu somehow.
Keep us posted.
MrBean
you are probably not far from truth
i'm sure that block design could use some tweaking for these new hotties :D
@ Dinos22: Yep, better tweaked blocks might help a little - I think Intel will sort out leakage currents pretty soon in next few steppings - we can only hope :)
Ah poo, now I don't think I want to go i7 for my project.
Maybe wait till Phenom II and see how they go.
Wait wait: Maybe it's something as simple as a waterblock revision, that help to transfer the heat.
So far all the blocks are for other sockets bar, 1366.
Then again, it could be intel that need to sort out leaking current and get some revisions out soon.
3.9gz
1.375 v
36 idle
62 -65 load
HT turned off turbo enabled
d Tek fuzion v1 with quad nozzal and spacer
thermocil p120 & p240
hd4870 with EK water block
ddc2 with xspc top
3/8 tuding
Mcubed T balancer controlling fans & pumup
only problem is no back plate or fitting for my fuzion block
so have temporary solution
wondering wether its worth changing to swiftech gtz block
temps seem ok and totaly stable
These things may seem hot but they run well at those temps.. remember when the 4870's came out? everyone was freaking out about how hot they ran. I think the temp issue has to do with the HT technology putting more stress on each core. But like i said, it seems like they've put this chip on higher grade silicon with better soilder and circuitry bonds because the heat does'nt seem to bother it at all. 100C is the new standard not to go over with these babies. With the Core 2's it was 70C. You guys just got to get used to the chip i guess. Just like everyone got used to there 4870's running at 80C
Quote:
Originally Posted by beast200
It seems like you have a good chip but you dont have HT enabled and i have to believe that takes some of the voltage requirements and thermal output down.
hmm 2 pages, not a single ambient temp post...
all your ambient temps most likely are in the 35C and above...
someone with 20 to 25C ambient please post some i7 temps...
Wow, I'm amazed (more like shocked) with the high temps :shocked:
And septim is absolutely right. :up:
Please post delta from ambient temp (room temp) of your i7 or at least the ambient temp.
I think measuring the water temp can tell us if the blocks are able to extract the huge amount of heat or its still stuck somewhere inside the chip which is the cause for the high temps.
Can anyone measure the water temp during a load/idle of an i7 @4Ghz (or close to that).
BTW, thanks for those who share their info.:)
Ya... I have a SS. Unmodded Vapochill. When I 1st got me E8500, which is a poor sample really, I used to say 'baaah nehalem will be the time for the SS' as the E8500 needed silly volts for anything close to 4.4Ghz.Quote:
Originally Posted by Metroid
Of course my SS is rendered useless again with the power heat output from i7. Almost thinking of selling it TBH.
T-Flight... just think... if you don't have water, you may not come close to the clocks reported here.
when my new stuff get here tommorow I am going to see if I can tame my Core i7
I am going to run Dual Feser 360 and a PA 120.2 and MCR 120
my room temp on all my test have been 69F my computer room is cold
also I got a probe to monitor water temp coming tommorow also
water temp don't differ too much. its air in air out that's what important.
comparing temps, you should have your ambient temps posted always... it will be the basis for temp comparison... as in how high from ambient is it at idle or load...
this would be assuming you have proper airflow inside your case, any case tower, cube, htpc.
with this in mind, there won't be that too much factors limiting a comparison...
What temp do the i7 920 throttle at?
so I did a prime run @ 4.0, 1.36v, HT enabled
this is on water with a GTZ, mcp355 w/ petras top and thermochill 120.3 w/ 6 fans in push pull config on the front of my MM case sucking cold room air
ambiet is around 75f
http://i37.photobucket.com/albums/e8...ander/40ht.jpg
for reference here is a prime run at 4.25, 1.46v, HT disabled
http://i37.photobucket.com/albums/e8.../4250prime.jpg
I quite agree, need more ambients. :yepp:Quote:
Originally Posted by septim
Also, aren't you guys forgetting that there is something else that's new about the Ci7 that also generates more heat? ;) ;)
I'm not...IMC, QPI, L3. :) That's what I'm trying to isolate and see. The HT test was a good one, becasue that is a piece of evidence that is confirming my suspicions, but hasn't quite confirmed it completely yet. The temps are still high though, and I really don't like seeing 70's for 24 hour use. I'm talking a machine folding 24/7 at near 100% load on all cores. To do that at relatively high OC's I need to get the Temps down and to do that would help a whole lot of people here. Maybe these things might handle 70's for years, btu I don;t wanna risk it with a CPU that costs 1000 dollars. My stuff has to last. I'll clock the heck out of it, but it's gonna run cool if I can make it run cool.
We might even have to wait for Block redesigns. I really hope that's not the caseIt's really gonna be bummer to play the waiting game after waiting so long again. Even before I was a member here I was waiting on this CPU. It's been almost 2 years now since the time I knew that these were gonna become a reality and were not just a rumor. I'm more determined than ever to figure them out, and will do whatever it takes. It's gonna have to be water though. Phase is out of the question.
OK did some tests. I can't post screens very easy because my system has no security yet, and is not hooked up to my router yet either, but these things do run cooler with HT disabled and with speedstep enabled. That's just on stock clocks. Since I just got my Video Card RMA back today I haven't been able to do any OC'ing, but I do see a measureable difference using CoreTemp at load and my idles are slightly lower also. Idles are already very cool in the 35-38 range on stock air with it running at stock speeds. It's the vCore with an OC that'll bring those up. I suspect it may have to do with the IMC and QPI being onboard which is something we haven't seen until now.
I agree with Riptide though that Water is better than Stock air, but I still would like to keep these temps down and maintain HT because of the work I'll be doing with my machine. SpeedStep I'm gonna leave enabled, because it looks like it may perform better with SpeedStep than without it.
I did some more test. the results speak for themself
This is with 68F Room Temp.. inside case air intake 70F
http://i293.photobucket.com/albums/m...Corei74ghz.jpg
I disagree. The delta water temp will tell you how efficiently you are removing heat from the water - assuming it goes into the water in the first place. I am talking purely from a primary cooling perspective, not considering the secondary effect airflow across the motherboard will have.Quote:
water temp don't differ too much. its air in air out that's what important.
What a few guys here are inferring is that a (decent) 240x120 rad is overcome by a single i920 - and what I am saying is, measure ambient water temp, start your system, run it at full load for a few hours, and measure differential in water in/out.
If it's fairly close, within couple degrees C, and close to ambient, it means:
i) CPU is not dumping as much heat as we thought into the water, either because it's not that hot, or, because we can't transfer the "real" heat away from the cpu.
ii) If there's a big delta between in/out, it means cpu block is doing a good job at removing heat from the processor, and the rad is efficient, and within it's design parameters.
20C Difference in load between E8600 12 hrs prime vs i7 940 12 hrs prime, using exact same cooling and setup, only motherboard, ram, cpu changed.
cpu only loop is PA120.3, 3 yates at 1300 rpms, ddc 3.1, dtek fuzion v1 with 5.5 nozzle. (I made a bracket to use for 1366 for dtek).
E8600, 1.33 vcore 4.2ghz max load 54C, have several runs, none were ever over 55C all at 26C ambients (pic1)
Core i7 940, 1.31 vcore 4/4.2 turbo max load 74C, have several runs max was 75C, all at 26C ambients (pic2)
I now have a GTZ installed with 1366 bracket and backplate, my load temps are ~3C cooler at 71C on prime 12 hrs at same ambient...so it was not my homemade bracket causing problem...cpu is just hot.
Not surprising that a quad core with the MCH on-die is hotter than a dual core.
Just got all my water cooling stuff installed and running. So far at 3.8ghz 1.33 vcore I am hitting 74C with HT on, room temp 68F. I tried 4ghz but kept locking up.. gunna have to play with voltages some to get the oc up. Each core temp 74, 70, 71, 67 using real temp 2.89.5
This is with mc-tdx cpu block, 2 mcw60 gpu blocks, mrc320-QP rad with 3 s-flex 1600rpm fans and a ddc 3.2 pump.
I hope no one is expecting a solid improvement in clocks over air....
Just look at benchmark stables speeds--people are hitting 4.4-4.5GHz on air and the same chip is barely cracking 5GHz (if that) at -110C. Heck, FUGGER got 5GHz on air and 5.7 on cascade with a chip DrWho? brought for him to play with.
Taking 15-20C off will maybe get 50-100MHz for most people (if that).
EDIT: long story short, these chips were designed to be indifferent to temperature. I recommend closing Core Temp/RealTemp, tuning your OC to max clocks that are stable, then tuning your cooling to reduce noise as much as possible without sacrificing stability--that's the way to make the most of a WC system on i7 (reducing noise).
we dont know what the issues are with current CPUsQuote:
Originally Posted by Vapor
maybe they are all heavily cold bugged man you just dont know
i think ppl will get great gains from water first of all because deltas will be far lower than air cooling so while you could prime at close to water temps on air it would not be sustainable due to higher temps
LOL Eric how can you say that these CPUs are indifferent to temperature lol
You will eventually get shorts if you run your rig under water . . .Quote:
Whats your 24/7 Core i7 920 and temps under water?
Wait, I just looked on Intel's site, what the hell is the Intel rated Max temperature for these chips to begin with?
I was not able to find out that info last time I looked.Quote:
Originally Posted by Freaky Freezer
Also a good point....65C is still a huge 35C away from assumed TjMax of 100C.
Anyway, undervolt + underclock and observe idle temps, if they're close to ambient, then it's not far off I suppose :shrug:
i920 at 4GHz and 1.36vCore with 60C AVG is a sweetheart chip. I could definitely live with that. That pretty nice with a 100% Prime load. :yepp:Quote:
Originally Posted by X2beach
You gotta remember that the 920 pulls almost 200watts at load, stock speeds. The 965 (3.2GHz stock) pulls ~250w. Add another 800MHz and you guys may well be using around 270watts under load; that's a heck of a lot more than penryn/wolfdale.
As far as power consumption goes we're back in the Q6x00 days, in the 2xx watt region. It was common back then to see 50-60 degC under load.
Wow i did'nt realize my i7 920 at 4ghz was pulling that much power.. that leaves hardly nothing left for my GTX 280.. There's no way i could add a second 280 on a Corsair TX-750W is there?
WTF? Source....multiple please.Quote:
Originally Posted by twwen2
That's insanely ridiculous for a chip conservatively rated at 130W TDP.
The design of this chip is meant to reduce power consumption--that was the whole idea...1% power increase for minimum 2% performance required vs. Yorkfield--and there's not that much performance increase.
I don't see why people are putting so much emphasis on temperatures especially compared to Yorkfield/Wolfdale temps--maybe Intel put the DTS sensor in a warmer part of the chip this time, maybe the sensor is actually correctly functioning this time, maybe the process just runs hotter (but lower power--YES that is possible).
Only compare Bloomfield temps to other Bloomfield temps--forget everything you've gotten accustomed to, this is a new chip.
40-45c idle, 60-65c load 4.2ghz.
1.344vcore under load.
made 7hours prime 4 threads.
Heat and voltage degrades electronics over time. How much? We don't know and that's the point. I don't wanna be the guinea pig who finds out the hard way. I'd rather just keep the CPU as cool as possible, or cooler by getting new stuff. Call it insurance I guess.Quote:
Originally Posted by Vapor
Until Intel will come forth and say "This CPU will run at these clocks for this many years" all we can do is cool the coolest and hope for the best. I've traditionally stayed under 60, and that's what I've had good luck with but higher would be getting into new territory. I'd be willing to test it over time if I had Intel backing, but I'm not gonna gamble with a chip that cost a grand on my own. It's just too expensive. I don't think one can hurt one of these CPU's by running it cooler, and that's what I'm trying to do, but running one hotter sure will. The cooler the better for me.
Rge
hi do you think its was / is worth changing from fuzion v1 to swiftech gtz
i am using my fuzion v1 with temp plate and waiting for D-tek to release a mounting system for the 1366
but still like the look of the gtz but is it worth £60 for that
cheers
You just need to get you a cheap 920 to play around with. I'm at 4ghz on mine and loving it. idling around 40C and loading at 73C. my voltage is at 1.420 and i'm not worried a bit about it frying because it's only $300. Go over to the thread saaya started about the VTT Graveyard. People are posting the chips capabilities right now. 95-100C is the new norm of what not to go overQuote:
Originally Posted by T_Flight
If looking for Tcasemax, it is 67.9C at 130W...not that there is a tcase sensor. Intel states in many docs that cpus are individually calibrated so that tcase max is reached when tjmax (100C on i7 read directly from cpu msr) is reached, to avoid unnecessary throttling below tcasemax. (Though that relationship presumes a full load of 130W, intel cooling, stock settings, whatever loading program intel uses, ambients same as testing otherwise that gradient relationship is highly variable.)Quote:
Originally Posted by Freaky Freezer
http://download.intel.com/design/pro...hts/320834.pdf page 79
It was worth it for me as my homemade bracket pretty much sucked, and required the block to be slightly rotated to fit. I was going to buy the first EK supreme, GTZ, or DTek that was sold in US with a 1366 bracket...happened to be GTZ first out the door. But I have run several prime runs with Dtek fuzion v1 5.5nozzle with my homemade 1366 bracket and with GTZ with proper bracket and backplate, there was only 2-3C difference on load. On the other hand I do a lot of temp testing with realtemp, and reseating wb frequently, and the retention bracket is awesome on GTZ, the time and aggravation that will save me alone was worth it for me, irrespective of the temps. But based on temps alone, I would not expect much more than 2-3C (I think that is what many reviewers found as max difference anyways), and I dont know how much of that on mine was from wb design or the fact that my homemade bracket was not tight enough.Quote:
Originally Posted by beast200
Right now, I don't wanna spend anymore on hardware unless I have to. I've gotta wait until after the Christmas Holiday season before I get my watercooling stuff. I'm not afraid to OC it or anything like that. Just wanna be real careful. I don't want my first Extreme Edition to go bye bye. :) I like the unlocked multi's and the extra options for memory tweaking with the Extreme. It also has the 6400 QPI. Since it's an Extreme I figured it would be pretty stout too since these have to pass QC's to become EE's.Quote:
Originally Posted by jasonelmore
I was testing my vid card lastnight and man I got one that has ALOT in it. I found the max clocks but it needs water. The temps run off. I backed off alot for best temp to clock ratio, and it runs happy now. That's kinda where I'm headed. Getting the best clock to temp ratio without getting too wild.
I did see Saaya's thread, and have been watching that memory thread verrrrry carefully. I have not went over 1.65v and may never go over it. There is so much bandwidth with this platform I don't think I'd ever be able to use it all for years.
Maybe a GTZ or a Dtek v2 or a Supreme may be in order. I've gotta call up Petra's today about some VGA cooling. I think I'm gonna go ahead and get that so I'll have it since it's not very expensive. The rest I'll get after Christmas and when the CC recovers from the damage I'm about to inflict on it. 3 weeks to go...Ho Ho Ho.
There was some short review done over on [T]ard forums by Bennett that showed ridiculous power draw figures. Frankly I ignored it.Quote:
Originally Posted by Vapor
So basically max temp is 100c, say 90-95c just to be safe? Well then running at 70-75c @ full load is pretty damn good I would presume, no?Quote:
Originally Posted by rge
Intel white paper quote on running your cpu up to TCC max temp:Quote:
Originally Posted by Freaky Freezer
"With a properly designed and characterized thermal solution, it is anticipated that the TCC would only be activated for very short periods of time when running the most power intensive applications.... An under-designed thermal solution that is not able to prevent excessive activation of the TCC in the anticipated ambient environment may cause a noticeable performance loss, and in some cases may result in a TC that exceeds the specified maximum temperature and may affect the long-term reliability of the processor."
I dont think intel meant for cpus to be run at their max temps, on the other hand they give similar warnings for OCing, and not to mention if it is only stress testing that gets you to 90+ temps, and everything else you do has reasonable temps...then it's a moot point anyways.
I have never seen any studies with cpus at varying temps for years which could answer what is ok...but for me priming 75C does not concern me, but opinions are going to differ. There is at least a 15+C gradient to IHS with prime, so clearly within specs (I have video in realtemp thread with thermocouple in IHS and one in die (hole through IHS and into die). Not to mention every cpu I have owned has spent hours and hours at 100+C without issue while temp testing with IR. Except for the IHSless E7200, which I turned the thermal monitering off in the bios b/c it kept shutting down before I could get a reading...and no shutdown temp + no IHS = dead cpu.
Intel does actually know the numbers of voltage vs. degradation and temps vs. degradation and how they scale and everything :p: They can't say publicly because then they're probably legally accountable to hold to those numbers (and it's a trade secret of sorts as well), but the numbers are known :)Quote:
Originally Posted by T_Flight
Ever wonder why they don't recommend over 1.65v on aircooling for vDIMM? ;)
I'd bet a lot of money that they have a document, chart or graph that has voltage on one axis and lifetime before degradation on the other axis....and that 1.65v is still well past their warranty period. :p:
I agree that neither variable is insignificant (heat and voltage), but the voltages that will kill the chip in our usage lifetime (3ish years and less for most people here) don't provide the overclocking gains they did in other architectures anyway (also why you don't see anyone doing extreme cooling at high volts--it simply doesn't scale outside of suicide screenshots). And temps aren't too bad either, all things considered, even with an XS OC we're running these chips just as cool as a lot of people on stock cooler, stock clocks, and stock voltages in a poorly ventilated Dell. :shrug: