greenbrucelee

to me your temps are too high 66 is below the cut off point but its not that far of it. I would look at other cooling solutions like a better cpu cooler and creating more airflow in the case

bizoot

And something else...
I didn't understand why I needed to set the TJmax value in real temp to 95...
Does this mean that 95 degrees Celsius is the highest temp I am willing to allow?
Isn't this a bit high? considering intel recommends 72 degrees only?
Thanks.

Phædrus2401

The TJMax is the "thermal junction maximum", basically it's just a number used to calibrate the thermocouple used to determine temperature inside the CPU. It doesn't affect the shutoff point or anything, it's just a calibration thing.

bizoot

Anyhow, my computer kept shutting off every day or so...
So I decreased the OC to 440X9 (1.2 VCORE).
Is this OK?
Thanks!

greenbrucelee

test it with prime 95 for atleast 7 hours if you don't get any errors it is fine just make sure your temps are good too by having real temp displayed whilst prime95 is running

bizoot

On another forum, someone wrote this...

450x4 = 1800mhz always multiply your system bus frequency (fsb) by 4.
cpu frequency 450x9= 4050mhz that's mega high. atleast you know your chip can reach that frequency.

the maximum system bus frequency your motherboard handles is 333x4=1333mhz. so your pushing your system bus frequency to high more that the board supports, so therefor will cause damage to your motherboard.

Is this correct???

greenbrucelee

your mobo supports fsb of 800,1066 and 1333. The e8400 is 1333 and is 333 x 9. If you take out the 800MHz ram you will probably get better results because of the 1066MHz frequency.

If you get as far as me 443 x 9 with the ram at 886 which makes a 1:1 ratio

450 is too much in my opinion even if you have dropped the multiplier.

bizoot

Do u think the system crashes at 450*9 because of the 800MHZ ram stick I left inside?
Or is it simply to high for my mobo/cpu?
thanks...

mattlock

Tjunction max is the approximate core temperature that the CPU will shutdown. It varies from one CPU to next. (CPU throttling typically begins a little before the TJ max and Thermal Trip usually just after TJmax.)

The Tjunction temp is measured by the digital thermal sensor (DTS) embedded in each core. The 72.2c that is referred to by Intel is the Tcase max, which is the temp at the center of the heat shield on the CPU. The problem with useing the Tcase max as your target temp, is there is no sensor to read that temp. The Tjunction temp is always going to be higher the Tcase temp.

I prefer to stay under 60c but a good rule of thumb is stay at least 30c under your TJmax. The default TJmax for Real Temp used to be 95° and Core Temp was 105°. Both utilities now default to 100°c for 45mn CPUs, which is the Tj Max that I use. So you max safe operating temp is 65-70° (depending on the Tjmax you use 95° or 100°)

If you're not running a memory divider to keep your ram running 1:1 then that's highly likely. At 1:1 your ram would be running at 900mhz on a 450mhz fsb. I have the same 800mhz ram and didn't run into problems until I hit around 940mhz. What's your RAM voltage setting?

Other thoughts, considering the fact that you are running an after market heatsink/fan your temps are pretty high.(at 1.4v I wasn't close to 70° on my 8400) I don't think they would be that high with the stock fan. I recommend that you replace the paste that came with your HS/F with some Arctic Silver and remember, too much thermal compound is just as bad as not enough. If it's oozing over the edge of the heatshield it's too much.

Also, you're running a 32bit OS so 4GB of memory is not usable. Your usable memory is closer to 3GBs due to limitations of the 32bit OS. So there is not a big advantage to running 4gb vs 2gb

bizoot

I now have windows 7 64 bit...
And as for the thermal paste,
The tech guy at the store when he connected my cpu, he applied a paste that came with a brush... Silver color...
I'm almost sure it was "‏Zalman Super Thermal Grease ZM-STG1"
And he didnt apply to much... he smeared it evenly and in a thin layer...

mattlock

ZM-STG1 is a pretty compound, pretty comparable to AS5. I still prefer AS5 however.

What kind of case do you have and what's the case fan configuration? (how many case fans, where are they located, do they suck air into the case or exhaust it from the case?)

What are your RAM timings and voltage?
What is your memory divider set at?