Core 2 Duo Temps Data Collection

[joshd]

I want to collect a load of temp data to investigate the issue of the E4300 temperatures. (Personally, I still think the newest CoreTemp reads them 15C too high. A friend's E6420 at similar settings loads around 15C cooler.)

If you could please set your CPU at 3.2GHz with 1.4375vcore (what mine runs at 24/7) and list idle and load temps, CPU, and what heatsink you are using. Load using Orthos, Small FFT's. Leave it running until temps stablise. I am using CT 0.95.

I will then look at the data, and it should give a reasonable enough indication if CoreTemp is lying. I am aware of the fact that it is not just E4XXX CPUs that have the 100C Tjunction, so it is less likely to be an error that it once seemed, however, they still seem too high.

Me first:

E4300: Idle = 45C, Load = 71C, HS = Tuniq Tower. CPU is lapped.

[Ethelred]

E6600(@3.2ghz): Idle - 22c, Load - 40c, HS - TR Ultra-90 (Both HS and CPU are lapped) <-Ambient is presently 18c

[Bail_w]

This is not the first thread regarding the reading of Tjunction Max 100 C or 85 C For allendale.

[joshd]

This is not the first thread regarding the reading of Tjunction Max 100 C or 85 C For allendale.

I'm aware of that, I've spent hours reading various threads on different forums over the internet, and no-one seems to be sure what is correct. I figured the best way would be to compare with other C2Ds running at similar settings, as the temps are going to be similar also.

[STEvil]

best way would be to compare two cpu's that report large difference with same heatsink on same board at same volts and clock speed.

Use an external thermal probe mounted to IHS of each, should come up with a similar number. If it doesnt then maybe coretemp is right.

[joshd]

best way would be to compare two cpu's that report large difference with same heatsink on same board at same volts and clock speed.

Use an external thermal probe mounted to IHS of each, should come up with a similar number. If it doesnt then maybe coretemp is right.

I don't have the money or time to do that, hence this thread, which should show any major discrepancies.

[pie_uk]

what is the t junction? is that when it hits a certain temp and throttles back to stop damage?

[joshd]

what is the t junction? is that when it hits a certain temp and throttles back to stop damage?

Technically, the Tjunction reports the delta between the current temperature and the Tjmax, the temperature the CPU throttles.

C2Ds use "DTS" to report temps. All the CPU can do is report the difference between it's temp and it's Tjmax. It is up to the program reporting the temperature to calculate the absolute temperature by taking the DTS value away from the Tjmax. If the program (coretemp, for example) is using a Tjmax that is 15C too high, (100C instead of 85C), the temperatures it reports will be 15C too high.

The reason for making this thread is that from what I have seen, 70C load for a E43 seems stupidly high on a TT120, compared to E6XXX model C2Ds, which all have a 85C Tjmax. From CPUs I have actually seen, they tend to orthos load at more like 55-60C, heatsink dependant. (A difference of around 15C).

I made this thread, because the more data that shows around a 15C difference in the temps (+/- a few degrees for different heatsinks etc) the more likely it is that CoreTemp reads the temps of E4XXX incorrectly. On the other hand, the thread may show that CT does infact read them correctly. I'd just like to clear up the issue.

[pie_uk]

yeah well at 1.32vcore my e4300 idles at 45 and loads at 70~1 also ! this is with a sugo case and nt06 nitrogen cpu cooler

[[cTx] Nooc]

before I give you my temps, 0.94 reports 85C and 0.95 reports 100C.

I will use 0.94...

e4300@1.45v idle 29C load 45C with thermalright 120 ultra xtreme. cpu and hs bases are both lapped, using mx-1 tim. 0.94 HAS to be correct.

[Bail_w]

my E2140 (tjunction 100C with 0.95 Coretemp) idle at 40s and loaded at 65s with 1.32v cooled by thermalright ultra 120 extreme lapped and modified mounting and i have tried with watercooling too but the results is the same. Therefore, i can conclude the IHS and core differently bad contact.

[joshd]

before I give you my temps, 0.94 reports 85C and 0.95 reports 100C.

I will use 0.94...

e4300@1.45v idle 29C load 45C with thermalright 120 ultra xtreme. cpu and hs bases are both lapped, using mx-1 tim. 0.94 HAS to be correct.

Well yea, that is the deciding point. Using CT0.94 seems to bring the temps more in line with E6XXX CPUs.

[joshd]

my E2140 (tjunction 100C with 0.95 Coretemp) idle at 40s and loaded at 65s with 1.32v cooled by thermalright ultra 120 extreme lapped and modified mounting and i have tried with watercooling too but the results is the same. Therefore, i can conclude the IHS and core differently bad contact.

Does CT0.94 report an 85Tjmax for that CPU, or is it not supported?

[Bail_w]

0.94 report it as 85 Tjmax and 0.95 report it was 100 tjmax.

[joshd]

0.94 report it as 85 Tjmax and 0.95 report it was 100 tjmax.

See, you have the same dilema as me then. Surely there is no way that on 1.32v, it would have those temps with a lapped ultra 120...

Using CT0.94 brings temps in line with E6XXX's, again.

[Bail_w]

Actually, the temperature that was reporting from 0.95 with Tjmax 100C is true. Why? because i tested 100&#37; stable with 1.35v @ 3.2ghz with my watercooling, then i switch it over to a big typhoon (nothing change in bios) , and the temperature flys up to 70s, then the OS froze while doing the OCCT 30 mins test.

[tiborrr]

E6700 L628A @ 3500MHz, 1.44V: idle: 44-45˚C, orthos small ftt's full load: 65-66˚C (ambient T=21˚C)
Scythe Mugen, original (1) fan, original mounting, non-lapped IHS (very concave)

[Bail_w]

E6700 L628A @ 3500MHz, 1.44V: idle: 44-45˚C, orthos small ftt's full load: 65-66˚C (ambient T=21˚C)
Scythe Mugen, original (1) fan, original mounting, non-lapped IHS (very concave)

yours is not allendale, so your input does not matter.

[pie_uk]

before I give you my temps, 0.94 reports 85C and 0.95 reports 100C.

I will use 0.94...

e4300@1.45v idle 29C load 45C with thermalright 120 ultra xtreme. cpu and hs bases are both lapped, using mx-1 tim. 0.94 HAS to be correct.

now that it very intresting. ! however if you open TAT this reads the same temps as 0.95 coretemp... so

reading about this on different forums suggests that its different for different chips. i think 0.94 will be correct for me, when i have load on my chip and it says 72, it barley feels warm to the touch so something isnt right.

can some one give me a download link to 0.94 please

[joshd]

yours is not allendale, so your input does not matter.

His input does matter, how are you supposed to compare the temps pf E6XXX with E4XXX if you only have data for E4XXX?

[Bail_w]

His input does matter, how are you supposed to compare the temps pf E6XXX with E4XXX if you only have data for E4XXX?

E6600 have tjmax 85C where E4300 have tjmax 100C, there is no point of comparing with these two. also, only allendale have this high temperature problem. besides, a conroe will have the same temperature (Coretemp 0.94 or 0.95) whether the tjmax is 85 or 100C.

[joshd]

E6600 have tjmax 85C where E4300 have tjmax 100C, there is no point of comparing with these two. also, only allendale have this high temperature problem. besides, a conroe will have the same temperature (Coretemp 0.94 or 0.95) whether the tjmax is 85 or 100C.

I am aware of that.

The whole purpose of this thread is to investigate the accuracy of CT0.95's readings.

If an E4XXX is consistently ~15C hotter than an E6XXX at similar settings, one could consider the possibility that CT is actually wrong, because there is no reason for Allendale's to be that much hotter than conroe. They are essentially the same core. If anything, allendale's should be cooler because they have only half the cache active.

[pie_uk]

so the conclusion of this thread =

[it_burns_when_i_pee]

e6600 19-22 idle @ stock speeds

overclocked today for first time, 3ghz and idle is now 23-28

ambient 18

[pie_uk]

cant find 0.94 anywhere