High TZS Temps on P7805U

Howdy,

I am doing some temp monitoring to test out the new IC Diamond thermal compound I applied today with a new X9100 CPU. I'm a little worried about my TZS temps.

I've attached a screenshot of my Hardware Monitor output, as you can see, TZS0 & TZS1 both hit 99C. I would assume this is some kind of ceiling as it throttled back the CPU.

The CPU cores seemed fine, never went above 86C during a 15 minute Prime 95 torture test.

Anyone know where the TZS sensors are located? Is there anything I can do to get those temps down?

Is this part of the actual processor? Forgive my ignorance on the subject, everything I have found seems pretty vague on Google.

Should I double check / re-apply the ID Diamond compound?

 

this thread should prove useful reading (post#102 is a good starting point):

http://forum.notebookreview.com/gateway-emachines/298342-7811fx-new-heat-issue-acpi-tzs0-11.html

In brief, dont mpay it much attention as it's a number based on a variety of factors; it's not an actual reading.

Pay more attention to core temps which are real and according to your attache pic, seem to be about right for Prime 95 torture testing.

What OC (if any) and voltage are you using on the X9100 when you carried out the stress test?

 

No overclocking... Running stock for now, so removed the P8400 that was in there, installed the X9100 and am testing stability...

@ 3.06 GHz it looks to be running at 1.238V according to CPU-Z

I should mention I am not using any type of cooler, with the computer lying flat on my desktop. I raised the back of the machine about 1/4" to get some better airflow and ran another Prime 95 stress test on it.

With the back end raised the CPU cores peaked at 83C and TZS peaked at 97C. It never throttled back during that 15 minute run time.

Thanks for the link, BTW. I had a feeling the TZS was a calculated number based on certain factors. Pretty good reading there. Wonder if that guy that was doing all the recoding is still hanging around.

Looks like my issue, for now, is an airflow issue.

The fans certainly seem to run strong. Any cooling pads that have proven to be worth their weight with the 17" FX series gateways? With our limited venting in the bottom, there doesn't seem to be too many offerings out there that will get cool air right into the fan intakes.

EDIT:

I have a puller type cooling pad that I bought years back (loud 80mm fans)... Doesn't work at all as a puller, but when I flip it upside down and set the intake of the CPU fan right over the cooling pad fan it makes a pretty big difference. Ran one more Prime 95 test and temps haven't gone above 76C.

I definitely need to find a laptop cooler that will work well with out intake vent configuration.

 

i use a NZXT Cryo LX with overvolted Scythe S-flex fans (custom mod) in conjunction with a bit of undervolting with Throttlestop.

stable undervolting in my experience for the X9100 (personal settings that i use)

3.2GHz @ 1.1875v

3.46Ghz @ 1.25v

3.7GHz @ 1.3625v

4.0GHz @ 1.450v (not recommended for prolonged usage under heavy load)

Other people have used different undervolting settings to much sucess. Just browse the forums.

 

Make sure Hardware Monitor is using the correct TJMax value for your CPU or your core temperatures will not be reported correctly.

The specs for an X9100 are 105C according to Intel.

Intel® Core™2 Extreme Processor X9100 (6M Cache, 3.06 GHz, 1066 MHz FSB)with SPEC Code(s)SLB48, SLGE7

You can edit this line in the hwmonitorw.ini configuration file if you need to.

CPU_0_TJMAX=105.0

It would be a good idea to pull your laptop apart and make sure there is firm contact between the heatsink and CPU. Something might be interfering with this and need to be re-engineered. Your present core temps will really limit what you can get out of these unlocked CPUs.

 

Thanks for the tip Uncle...

I made the adjustment to the HW Monitor .ini file and it didn't seem to make too much difference.

I've since built a custom cooler which dropped the temps quite a bit.

Also, using ThrottleStop I have been running the X9100 at a 13x multiplier, 1.250V (3.46GHz) and it's been very stable with core temps around 60C while playing games at 70-80% CPU load, so I'm pretty happy with that.

It only gets borderline when running Prime 95 Torture tests. I kind of expect that at 100% load for sustained periods. At my current settings though, CPU core temps reach 82C, stable at 100% load for 45 minutes. The TZS temp reached 97C, but disabling BD PROCHOT in ThrottleStop seemed to be effective in preventing the CPU from throttling back.

It would be nice to know which factors are going into the algorithm used to calculate TZS. If there is another component that's not being monitored somewhere that the temps are rising on... As it stands with the cooler I made I have fans on the CPU, GPU, and hard drives. The only apparent hot spot left that I can feel is the memory, and there doesn't seem to be much I can do about that outside of modifying the case.