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Prime 95 test

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February 22, 2010 7:54:08 PM

Hi,

I have a Q6600 not overclocked and i just ran a prime 95 Blend test for 26 minutes and the 4 cores were at:

core#1 80C
core#2 79C
core#3 70C
core#4 69C

I was just wondering is this normal or bad as i read that people are running these tests for hours at a time and also that the CPU shuts off if it reach's 100C

More about : prime test

February 23, 2010 8:30:35 AM

If it is not overclocked, you don't need to test it.

The temps look normal for a non-overclock machine.

Mine (i7 860 @ 4.02 GHz) can go up to 99c in Prime95 stress test but it is still stable and pass all tests in a 2 hour run.
February 23, 2010 8:44:54 AM

Ok thanks for your help,

I am planning on overclocking to around 3.0 ghz as i recently replaced my power supply with a fatality 550w, also added a 12cm thermaltake exaust fan and i just received a Zalman 9700 yesterday but cant install it yet because I ordered artic 5 thermal paste and atriclean to remove the old paste and the stupid amazon shop sent me 2 tubes of artic 5 by mistake so im left staring at my cooler waiting on them to receive the paste and send me the correct item lol.

Do you think it will be ok to overclock to 3.0 using the above ?, I have no fans at the front pulling ait into the case only one side fan which I think might cause a heat problem.

My ram is ddr2 667 (so divide by 2 = 333) but is currently running at a 1:1 ratio with my cpu at around 266.5.

cpu is 266.5 x 9 = 2398.5. (2.4Ghz)

so am I right in saying that the q6600 has a max multiplier of x9, so I have to set my ram to 667 and then push the Fsb to 330-333 to get the cpu/ram ratio back to 1:1 and get 330*9 = 2970 (2.97Ghz)
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February 23, 2010 10:18:38 AM

jojodancer said:
If it is not overclocked, you don't need to test it.

The temps look normal for a non-overclock machine.

Mine (i7 860 @ 4.02 GHz) can go up to 99c in Prime95 stress test but it is still stable and pass all tests in a 2 hour run.


lol 99C wow....you do realise that temps will cause serious damage to your CPU :pfff:  I'd recommend you keep the temps below 72C, Just because its stable and passes Prime doesnt mean its safe.

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February 23, 2010 1:00:54 PM

davedurg09 said:
Ok thanks for your help,

I am planning on overclocking to around 3.0 ghz as i recently replaced my power supply with a fatality 550w, also added a 12cm thermaltake exaust fan and i just received a Zalman 9700 yesterday but cant install it yet because I ordered artic 5 thermal paste and atriclean to remove the old paste and the stupid amazon shop sent me 2 tubes of artic 5 by mistake so im left staring at my cooler waiting on them to receive the paste and send me the correct item lol.


No need to wait on the articlean - it's a waste of money buying it in the first place - just get isopropyl alcohol and some Q-tips from the local drug store and it works just fine and is much cheaper - so you were probably beter off with the 2 tubes of AS5 anyway !!
February 23, 2010 6:13:16 PM

Rustyy117 said:
lol 99C wow....you do realise that temps will cause serious damage to your CPU :pfff:  I'd recommend you keep the temps below 72C, Just because its stable and passes Prime doesnt mean its safe.




Not 99c at all time :ouch:  It was the max temp that one of the cores reaches.

Prime95 (in FFTs mode) is testing your CPU in max temp mode (stress test).

My regular temps (not 100% game loaded) are around 20-30c and I think the Corsair H50 does an OK job.
a b à CPUs
a b K Overclocking
February 23, 2010 8:30:00 PM

jojodancer said:
Not 99c at all time :ouch:  It was the max temp that one of the cores reaches.

Prime95 (in FFTs mode) is testing your CPU in max temp mode (stress test).

My regular temps (not 100% game loaded) are around 20-30c and I think the Corsair H50 does an OK job.

I swapped out my Xigmatek for an H50 with push/pull fans today
I7-860 @ 4.02
79c max after a couple of hours of large FFTs.
99c peak on any core is crazy temps.
a b K Overclocking
February 24, 2010 9:07:50 AM

davedurg09 said:
Ok thanks for your help,

I am planning on overclocking to around 3.0 ghz as i recently replaced my power supply with a fatality 550w, also added a 12cm thermaltake exaust fan and i just received a Zalman 9700 yesterday but cant install it yet because I ordered artic 5 thermal paste and atriclean to remove the old paste and the stupid amazon shop sent me 2 tubes of artic 5 by mistake so im left staring at my cooler waiting on them to receive the paste and send me the correct item lol.

Do you think it will be ok to overclock to 3.0 using the above ?, I have no fans at the front pulling ait into the case only one side fan which I think might cause a heat problem.

My ram is ddr2 667 (so divide by 2 = 333) but is currently running at a 1:1 ratio with my cpu at around 266.5.

cpu is 266.5 x 9 = 2398.5. (2.4Ghz)

so am I right in saying that the q6600 has a max multiplier of x9, so I have to set my ram to 667 and then push the Fsb to 330-333 to get the cpu/ram ratio back to 1:1 and get 330*9 = 2970 (2.97Ghz)

I OCed my girlfriend's Q6600 up to 3.6ghz using a 400fsb with the 9x multiplier with CPU voltage set on 1.41v or 1.42v. It runs stable and smooth! Her RAM is with a 1:1 ratio and is currently running 1000 (400x2.5). Temps were 70-80°C using Prime95 and this is with an Arctic Cooling Freezer Pro 7 Rev2 HSF. She does have a case with 120mm front intake/rear exhaust fans and 2 80mm side intake fans, so your temps might be higher without a good airflow.
February 24, 2010 11:23:12 AM

Thanks for the help Kokin, but will my temps not be lower as i am only aiming for 2.4Ghz to 3.0Ghz and not 3.6Ghz so will my CPU voltage not be lower than 1.41.

my ram only supports (667 mhz at max) so i cant push my Fsb to 400 as the max will be 333 to maintain a 1:1 ratio with the CPU, or can I over clock the ram to 800mhz and then push the Fsb to 400 although i dont even like the sound of that lol i would rather buy 4gb for ddr2 800.
a b K Overclocking
February 25, 2010 1:00:47 AM

Well at this point you have two options:

1) Keep all your settings and just increase the FSB with increments of 10-15. Then boot up and test for stability. With this method, you're allowed to find the limits of your components and you'll have more experience with OCing.

2) You can lower your RAM to run at 200 (400mhz) and just increase your FSB straight to 400. This will depend on your BIOS if you can run your RAM in lower clocks.

I would recommend using the first method and if that fails, I would try the second method. OCing is tedious work, but once you reach certain goals, it's a nice feeling of accomplishment. :D 

If all else fails, go for new RAM.

*I'm assuming you probably know this, but if you don't, first find out how to clear your CMOS on your mobo before you go using settings that will result in no boot.*

Good Luck! :D 
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February 25, 2010 3:11:52 AM

jojodancer said:
Mine (i7 860 @ 4.02 GHz) can go up to 99c in Prime95 stress test but it is still stable and pass all tests in a 2 hour run.


OMG, get some good air cooling, my 860@4.0 Ghz on air never exceeds mid to high 70's during prime95.

As stated already 99c is CRAZY :non: 


February 25, 2010 7:46:25 AM

Kokin,
i thought that it was ram-speed/2 to get the Fsb speed to use:

example at the minute my ram is running at:

533 and my Fsb is at 266.5 533/2=266.5 if i upped the ram to 667 then it would be
667 and my Fsb could go to 333 667/2=333.5

but you are saying lower my ram to 200 and i can then push the fsb to 400, that doesnt make sense to me unless ive got it all wrong :o  .
a b K Overclocking
February 25, 2010 8:07:19 AM

davedurg09 said:
Kokin,
i thought that it was ram-speed/2 to get the Fsb speed to use:

example at the minute my ram is running at:

533 and my Fsb is at 266.5 533/2=266.5 if i upped the ram to 667 then it would be
667 and my Fsb could go to 333 667/2=333.5

but you are saying lower my ram to 200 and i can then push the fsb to 400, that doesnt make sense to me unless ive got it all wrong :o  .

Ah, well with my girlfriend's Q6600 and GIGABYTE GA-EP45-UD3R, the BIOS doesn't exactly use a manual ratio divider and it allows me to set the RAM at certain clocks (@400fsb I got: 800,1000, 1066, 1200), regardless of my FSB. I was assuming you probably had something similar, but I guess I was wrong. It's worth trying out to see if you can OC your RAM to 800mhz, if you make it, then at least you saved yourself some money from buying new RAM. Best if you shoot for something lower first like 3.2ghz (355.5x9) and test to see if your RAM can run it stable.
February 25, 2010 8:12:33 AM

Ok thanks for the help,

I cant even try any of this until I receive the Articlean thermal paste remover so i can fit my zalman 9700, its really annoying lol, im just itching to overclock, should receive it in the post today or tomorrow hopefully.
a b K Overclocking
February 25, 2010 8:17:57 AM

davedurg09 said:
Ok thanks for the help,

I cant even try any of this until I receive the Articlean thermal paste remover so i can fit my zalman 9700, its really annoying lol, im just itching to overclock, should receive it in the post today or tomorrow hopefully.

Articlean works wonders. :D 

I'm actually waiting on 2 120mm 90-100cfm fans I bought for a push/pull setup on my Scythe Mugen 2. I bought them at xoxide.com a month ago and they ran out of stock after I bought it, so I just requested to wait til they had it back on stock. The fans recently went back to stock about 4-5 days ago, but I haven't received any emails confirming that I was getting my fans and their support hasn't responded to my email from 2 days ago. I'm feeling a bit of frustration as well. :fou: 
February 25, 2010 8:24:43 AM

its real annoying when you order something online as basic and small as 2 bottles of articlean or a couple of 12cm fans and these big companies cant even handle delivering the correct product or in a decent time, just like your example I mean they must have known they wouldnt get the stock in for a long time and you would have respected them more if they had of just told you that in an email. you would be more likely to buy from them again where as now your probably less inclined.
February 26, 2010 1:00:09 AM

guys, when you did your Prime test, was your Hyper Threading off or on?

When the H-T is off, my core temps are around 70c'ish.
a b K Overclocking
February 26, 2010 5:45:08 AM

davedurg09 said:
its real annoying when you order something online as basic and small as 2 bottles of articlean or a couple of 12cm fans and these big companies cant even handle delivering the correct product or in a decent time, just like your example I mean they must have known they wouldnt get the stock in for a long time and you would have respected them more if they had of just told you that in an email. you would be more likely to buy from them again where as now your probably less inclined.

Yeah seriously, but xoxide is a modder's site and I do still plan to buy Cold Cathodes for my case in the future.
!