prime 95 temps to high.

gritmaster

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Jan 16, 2015
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4,510
I have a new 1st build I ran the ASUS suite and with my cooling system it was able to OC to 4.8 Ghz but I do recording in protools and it doesn't like turbo boost or anything throttling so I set the mutiplyers to 46 to get 4.6 Ghz and changed the voltage to 1.3 volt in bios and disable the turbo boost setting.(although it says it's 1.35 or the similar in the Asus suite on some cores it's changes sometimes in very small incriments. ). I ran prime 95 and it goes way into the 90 and ends up lowering my Ghz to push it back to the 80s. Did I do something wrong in prime 95 or the OC?

System specs if needed
ASUS z97 pro
Intel i7 4790k
gskill sniper RAM 1600mhz 16 gigs
Nvidia MSI GTX 980
Corsair HX750i.
Corsair h50

Running windows 8.1 pro
inside a thermatake V71 with all 4 200 mm fans and 2 120mm at bottom intake and the h50 in the rear exhaust. I plan on buying a h100i next month and modding it to use red tubes and colored coolant and place the rad at the bottom.
 
Solution


for simplicity, use intel burn test set to high for finding your temps. use prime95 set to small fft for stability on a 12 hour run. you can do a custom 2 thru 8 fft lenght on prime if you want temps to be higher in prime, but it isn't really necessary, overall stability is what is important. ibt will expose your highest temps. if your barely passing your target temp ceiling with ibt but staying below it on prime, i wouldn't worry too much about it. no...
For the WC part, I would get a actual water cooling unit instead. The trouble and cost to get a h100i, new tubing, colored coolant, you could buy a real water cooler instead, that could eventually add your GPU into the loop as well.

As for the high temps, turn down your oc. Not ever chip and mb can OC that high. You might do better with a real water cooler, but the all-in-coolers are a tad or even with a good air cooler. You need to move up a step to hit that kinds of overclocks and probably add in the southbridge, VRM's cooling, etc. There is a lot more to overclocking than just turning up some numbers and buying a $50 "water" cooler.

don't get me wrong, the all-in-one coolers are nice for that wow factor and keep a mild overclock really cool, but the thing I noticed was that taking away a big chunk of copper and fans like even a hyper evo 212 away from the cpu, also removes that heat removing copper and fan from the general area of the VRM's. My all-in-one water cooler can keep my cpu cool even to hit 4.86 (AMD 8320, stock 3.5ghz), but my VRM's just get too hot. I was need to water cool them to get them cooler. I've added fan's on the front of them, on the back of my motherboard, all over my case and none of it was good enough to the keep the VRM's cool enough to not overheat them and my socket. CPU was fine.

I think you are asking too much for your current setup and the OC you have.
 

gritmaster

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Jan 16, 2015
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Thanks for the response. I assumed since the ai suite was able to OC to 4.8 I would be able to at least get 4.6. So should I leave the cpu at its boost clock 4.4ghz? My ram and other parts are fine I have seen my mobo temps get passed 40 and ram doesn't get very hot either my house is usually at 67-70°F. I would like a custom loop but tbh I rather get a h100i mod it for cheap than 200 plus if I knew someone that did water Cooling then yes. The weird thing is in bios I set up the voltage to 1.3 but it says some cores will be at 1.25v and some will be 1.32 or something close to that
 

gritmaster

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Jan 16, 2015
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Ok. I'll monitor if it ever gets any higher. I'll lower to turbo boost clock as see what happens. Dosent prime 95 need settings for a multi core cpu so it loads all the cores correctly. Like needing 2 Instances ? Idk I read the sites instructions but didn't really get it.
 


for simplicity, use intel burn test set to high for finding your temps. use prime95 set to small fft for stability on a 12 hour run. you can do a custom 2 thru 8 fft lenght on prime if you want temps to be higher in prime, but it isn't really necessary, overall stability is what is important. ibt will expose your highest temps. if your barely passing your target temp ceiling with ibt but staying below it on prime, i wouldn't worry too much about it. no normal program will be passing primes temps anyways. just keep an eye on voltages, more importantly the voltage that is holding steading during %100 usage. voltage will blip up for 1/1000th of a second when the core usage load drops out, normal vdroop.
 
Solution

gritmaster

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Jan 16, 2015
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Ok I'll run it right now and post my results. I guess if Intel is fine, don't run prime? Prime doesn't really test real world and protools will never ever bring the Temps up drastically it just like a steady Ghz and gaming I never get above 45c with the current OC
 

gritmaster

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Jan 16, 2015
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Ok i ran IBT at very high i lowered my OC to turbo boost speed (4.4) and also lowered the voltage to 1.25 instead of 1.3v. I ran it since i last posted and the highest it got to was 70c and average in the low 60s. I'm idling around 28c. thanks for the helping a noob guys! i guess i will wait till i get a better cooler to go back to 4.6 or just stay at 4.4 for the sake of not adding anymore fans and just modding my h50.
 

gritmaster

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Jan 16, 2015
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Final update i ran Prime 95 for 5 hours or so and i got a temp from 67-70C kind hot for my preference but definitely not bad since it will never reach that load i changed OC a couple times and decide on 4.4 Ghz and a 1.6v passed all prime test and intel burn test
 
70c is fine. let prime run 12 hours, it will take about that long to get up the long fft lenghts. sometime you will find a system will fail at a certain fft length like 1344(or whatever) all the time, repeatedly, but is stable for the 10 hours before it running smaller, or even larger fft lenghts.
 

gritmaster

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Jan 16, 2015
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ok further tweeking i got a good chip i tried booting at 1v no avail i did 1.1v and booted and left prime running still is right now . 60s i just ordered a new coolmaster 220l i will bump up to 4.6 and maybe try 1.5v-1.7v and see how that works out when it arrives ill keep updating the thread and post results help out other noobs like me. do you think with being able to boot at 1.1-1.2, 1.5 would be enough for 4.6 or even 4.8 with that cooler?