how to run prime 95 properly?

Something Else · 20 Oct 2012 at 12:17

im doing some stess testing to try and find out what my max temps are and im using prime 95

its doing a continuous blend test at the moment and im monitoring the temps and i know this sounds stupid but the temps seem too low.

task manager shows cpu usage is 100% but my temps are around 42

cooler is a megahalems with 2 140mm akasa apaches

here is a shot of whats happening

is the test running correctly? sorry for the noob post

thenewoc · 20 Oct 2012 at 12:27

Started a blend test about an hour before you. Mine is topping 59 c on hottest cores, testing 4.4 GHz on a 3570k with a phanteks phtc14pe. Have you got round off checking enabled in the advanced menu?

Something Else · 20 Oct 2012 at 12:31

think i found my problem lol.

only had the cpu at stock, 2500k 3.3ghz

its up to 4.2 now, more than enough for me

ill post back some results in a min

thenewoc · 20 Oct 2012 at 12:34

that was going to be my next question lol

Something Else · 20 Oct 2012 at 12:35

even at 4.2 it still stays under 50 and its pretty much silent.

Jokester · 20 Oct 2012 at 12:38

Use something like Coretemp or Realtemp to measure the CPU temperature, not sure what AIsuite actually uses, the sensors embedded in the chip or something else.

Something Else · 20 Oct 2012 at 12:42

im going to leave it to run for a while but it wont go over 47c so im happy with the temps although im still not convinced prime is really working the cpu.

ive now ticked round off in the advanced section so i will see if this makes some difference

Something Else · 20 Oct 2012 at 12:57

hows this looking? seems ai suite shows the temp to be a lot lower than they are

also volts between the two are different :S

Something Else · 20 Oct 2012 at 13:08

it will actually keep it well under 60 if i have the apaches at 100% but that defeats the point of buying them for silence. even with them at half speed it stays at around 62 on the highest core and is near silent, in game its silent so im happy with the system

Jokester · 20 Oct 2012 at 13:17

The VID in Coretemp isn't Vcore, just what the CPU is asking for if the Vcore was set to Auto.

Something Else · 20 Oct 2012 at 13:27

Jokester said:
The VID in Coretemp isn't Vcore, just what the CPU is asking for if the Vcore was set to Auto.

ahh ok thank you.

am i right in thinking that my system is running as it should given that problems havent been pointed out? anything else i should check?

thenewoc · 20 Oct 2012 at 13:41

Would it not be better to oc purely on the multiplyer instead of introducing a higher bclk for the oc your aiming at?

Doomedspeed · 20 Oct 2012 at 13:53

thenewoc said:
Would it not be better to oc purely on the multiplyer instead of introducing a higher bclk for the oc your aiming at?

it is adviced by many source that multiplier over clicking is the best/safest way. I think the bclk clock is linked to the on board gpu.

Jokester · 20 Oct 2012 at 13:55

You're ok adding a few MHz to the BCLK for testing overclocks, the 100MHz jump is quite big if you just use the multiplier, so you could end up introducing more than one instability at a time, so it can lead to more head scratching.

thenewoc · 20 Oct 2012 at 14:00

You should also check windows event viewer > windows logs > system, for the presence of whea-logger warnings as that would also indicate how stable the oc is.

Something Else · 20 Oct 2012 at 16:07

ok so what should the bclk be? should it be set to 100?

thenewoc · 20 Oct 2012 at 16:46

Try bclk @ 100 and multiplyer at 43 as your almost on 4.3, see how temps are, maybe try 4.4 then. Depending what your ram is on you may be able to up that too.

Something Else · 20 Oct 2012 at 16:50

thenewoc said:
Try bclk @ 100 and multiplyer at 43 as your almost on 4.3, see how temps are, maybe try 4.4 then. Depending what your ram is on you may be able to up that too.

16gb of kingston ram @ 1600mhz 1.65v

its on the limit of safe sandybridge ram voltage

im at 100mhz bclk and multi set to 43 and ive been running prime plend for about 50mins now and its stable so far

temps are staying under 65c ive set a custome fan profile so they stay under 70c im onto

thenewoc · 20 Oct 2012 at 16:57

No whea-logger warnings either? This is harder to achieve than prime being stable.

Something Else · 20 Oct 2012 at 17:05

thenewoc said:
No whea-logger warnings either? This is harder to achieve than prime being stable.

cannot find any whea-logger warnings at all.