Do all the i7's have the same max temp? I know the 920 is 100c, but how about the 965?
they are all made of the same silicon, so yes, they all have the same ratings
Yes they have the same thermal limit
texan1962,
Intel's Thermal Specifcation for the Core i7 variants is 68c, which is Tcase Max, and is shown in Intel's Processor Spec Finder - http://processorfinder.intel.com/Default.asp
68c Tcase Max is CPU temperature, NOT Core temperature. The thermal relationship between CPU temperature and Core temperature is 5c, which is shown in the following Intel paper - http://arxiv.org/ftp/arxiv/papers/0709/0709.1861.pdf
Since Core temperature is 5c higher than CPU Temperature, you shouldn't exceed 73c Core temperature, regardless of the fact that maximum Core temperature (Tjunction Max) is 100c.
Tjunction Max 100c is shutdown temperature, which is already far too hot, so any Core temperatures higher than 73c should be considered overtemp.
Comp
So with your i7 920 @ 4.1, 1.36 vcore, and a Xiggy 964, how overtemp are your cores at full load Prime 95 Small FFT?
They're not, however, at 22c standard ambient with Prime95 Small FFT's, they're right at spec, which you can also see in my signature, is 73c.
damn nice temps! I GOT MINE TO 3.6 ghz and i idle at 45c with max temps at 75c with teh v8 heatsink, tell me your secret man!! waht do you do to keep her cool?, my vcore is only at 1.268. i ordered the lapping kit and some different thermal greese to see if that will help me any, i really hope it does
HT off.
i tried that, but when i check system properties it only shows that i have 2.7ghz?? so what would be the point of the overclock? or does it still function the same?
4Ghz@1.376v
40c idle/58c load
Coolit Domino with 120mm fan upgrade and modified for push/pull config
I don't know what intel did to the newer batch's but this February chip blows compared to my december chip
so your sayin change out my heatsink fans? to fix the issue. also im getting the readings off core temps with real temp monitoring not speedfan temps
| vinceg wrote : so your sayin change out my heatsink fans? to fix the issue. also im getting the readings off core temps with real temp monitoring not speedfan temps |
What case do you have?
the black sniper case, its pretty big, on off the bigger ones compared to the rest, with pretty good ventilation, except it stands under my desk,
| vinceg wrote : the black sniper case, its pretty big, on off the bigger ones compared to the rest, with pretty good ventilation, except it stands under my desk, |
Like that case. How many fans do you have in it?
3 case fans, rear front, and top
Do not use System Properties, as it can misreport clock speeds. Hyper Threading will not affect clock speed. Use CPU-Z to see an accurate report.
| vinceg wrote : 3 case fans, rear front, and top |
Thats your problem.
Add two blowing in on the door and one on the bottom of the case.
thanks for the headsup compu i didnt know that,
so your running with it off? to get those temps? it dont really slow the computer down?
| PsychoSaysDie wrote : Thats your problem. |
i think it is too , cause when i crank the fans up my temps stay the same
so you are saying get some fans that blow from the side door on the mobo, and one that blows from teh bottom of the case up?
| vinceg wrote : i think it is too , cause when i crank the fans up my temps stay the same |
Yes. Your just not getting enough flow
The only time I enable HT is for Flight Simulator X. It's the most CPU intensive title you can run, and requires massive amounts of multi-threaded-overclocked horsepower, which is where it derives it's frame rate.
| CompuTronix wrote : The only time I enable HT is for Flight Simulator X. It's the most CPU intensive title you can run, and requires massive amounts of multi-threaded-overclocked horsepower, which is where it derives it's frame rate. |
What QPI voltage are you running comp?
oh ok, thanks to both of you i got some homework to do lol, does hyper thread dissable four off the cores? becasue when i tried running prime95 with hyperthread off, it only showed 4 cores instead of 8.
| vinceg wrote : oh ok, thanks to both of you i got some homework to do lol, does hyper thread dissable four off the cores? becasue when i tried running prime95 with hyperthread off, it only showed 4 cores instead of 8. |
HT off just disables the extra threads
i tried playing with the qpi but it didnt change much either, currently i have 1.24
| vinceg wrote : i tried playing with the qpi but it didnt change much either, currently i have 1.24 |
What was your packaging date?
ahh thanks, i usually just play call of duty online andsome other smaller games. so im guessing they wont need all of the 3.6ghz
1/23/09
It's all about Batch# first, then Pack Date. Check out the following - http://spreadsheets.google.com/ccc [...] 84YAIFaRaw
I'm running a hand picked Batch# 3836B, with QPI set @ 1.30.
bathc # 3841A578 and i dont know whats the differnce in them lol
Click on the link I provided above.
so im guessing hyperthread then takes off about 15percent off the full performance? when it turns off?
Turning HT off will have a negligible effect in terms of reduced performance, unless you're running a game or application which is coded for multiple threads. However, clock per clock, due to the 10% Vcore increase required to maintain stability when HT is turned on, HT increases CPU temperature and Core temperatures by a whopping 33%.
ohhh thanks for the education compu, i will go turn her OFF
and thanks to physco for his quick help as well. this forum rocks!
While you're at it, click on the link in my signature to check out my Temperature Guide.
i was actually studing that when i was talking with you guys haha, very nice write up!
hey im back already, i turned off hyper thread, and added two fans on the side of the door to blow right on the v8 heatsink, and my temps are still at 44 -45c idle. something not right here? its prob 72f in my room right now
| vinceg wrote : hey im back already, i turned off hyper thread, and added two fans on the side of the door to blow right on the v8 heatsink, and my temps are still at 44 -45c idle. something not right here? its prob 72f in my room right now |
Post a screenshot of CPUZ and hwmonitor
ok hold on
For Core i7's only, SpeedFan 4.37 needs a +15c offset for the Core temperatures. Temp 2 is your CPU temperature. Also, turning off HT will affect load temperatures only, so run Prime95 Small FFT's for 10 minutes. Make sure that all fans are at 100% RPM.
here it is, running on prime 95 with hyper thread OFF. my room got warmer in the efternoon and my idle temps go up to 46 -47c
What was your ambient when you took the screenshot?
its about 75-76 f in my room
24c. So if you adjust to standard ambient which is 22c, then your mean core temperature is 63.75c at Prime95 Small FFT's. Follow so far?
uh kinda got lost lol, what about my idle temps do i read the first or 2nd number on real temp for cpu temps? and do i subtract 3 or 4c of the idle based on your ambiant calcualtions for idle temps as well?
I think I got lucky on my chip, the highest i've seen my pc go was 71c after running prime 95 for 30 hours. However, my vcore is below the standard 1.3 and i am very stable at 1.188. I do have HT enabled... I used real temp to monitor my temps. I'm cooling with a lapped thermalight ultra 120 extreme, with artic silver 5 paste. I also lapped the chip and both have a mirror like finish. The antec 1200 has plenty of fans to keep me cool (9 total).
dang i got 5 fans but if i turn them off or on i dont see and difference in temp changes in real temp. i ordered the lapping kit, and different thermal paste so i hope that will drop a few degrees but it still wont be where it should i think, im also thinking the biggest reason its so hot is becasue its under my wood office desk surrounded by three walls of the desk walls and the only cabinet opening for it is where i sit in front of the desk
The back of your desk needs to be open in order to provide an exit path for warm exhaust, so it doesn't recirculate in through the side.
| vinceg wrote : uh kinda got lost lol, what about my idle temps do i read the first or 2nd number on real temp for cpu temps? and do i subtract 3 or 4c of the idle based on your ambiant calcualtions for idle temps as well? |
Not even close. Real Temp reads Core temperatures only. SpeedFan reads CPU temperature AND Core temperatures.
i was thinking the same about the desk so i turned the rear fan to blow on the proc instead since it was point less to have it blow hot air into a wall, but it looks like i might have to have this on top of my desk since i wont want to cut my 1500 desk for exhasut hole haha.
ok so your temps that are on your sig are speedfan cpu temps correct? or is that core temps? and you said with speedfan we have to add 15c for the temps for the i7 proc right? so my core 0 is currently at 31c on speedfan and if i add 15c that will be 46c same as core temps. im prob confusing you and me right now, sorry man.
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