Overclock.net › Forums › Intel › Intel CPUs › i7 950 running hot
New Posts  All Forums:Forum Nav:

i7 950 running hot

post #1 of 3
Thread Starter 
Hi,

Ive got an i7 950 running watercooled. under normal running conditions not overclocked, running standard bios options, at 100% load with prime95 the temps are around 65-75 degrees, and the water temp after the radiator is 39 degrees. im using real temp to get my core temps. now i overlocked it by changing the bclock to 146, giving 3.5GHz leaving everything else in the bios the same and the temps are around 80-85 degrees, with 40 degree water. initially first i did just throw the bclock up to 175 giving 4.2GHz but the temps were around 100 the instant i started prime95 so i immediately stopped it and pulled back the clock. it did run nicely, for editing photos it was going well, not a problem with stability but just when i loaded it up 100% with prime95 it got hot.

is this right that the temps are so high? i thought 65-75 degrees with watercooling and no overclock was a bit too high. i am reading many people on forums with various i7's, 920, 950, 965 all getting above 4 and 4.2GHz, with people discussing stability.. im never going to see stablity issues, in this system heat comes long before stability issues. i have tried taking the cooler off and cleaning, and reapplying the thermal paste but that saw a difference of 1 degree on cores 3 and 4, no difference on cores 1 and 2.

this water cooling system did wonders for my last system before i upgraded the motherboard/cpu/ram. i had a q6600 that i took from 2.4Ghz stock to an overclocked 3.9Ghz for everyday use. i did have it running at 4.2Ghz, but i needed the fans running loud to keep the temp down around 65 degrees. i never took my q6600 above 70 degrees, and i remember having to play around with the bios a lot to make it a good stable system at 4.2 ghz. yet on this i7 i cant take it any higher than 3.6ghz, when its 3.06 standard otherwise it gets too hot.

is there any settings in the bios i can change to get the heat down? its running nice and stable as it is, just too hot. all the settings are as bios defaults at the moment. i am wondering about lowering the core voltage, any thoughts on if that will work? ive read about people disabling c-states when overclocking.. as far as im aware that will not increase the heat? am i correct?

any help would be fantastic.
post #2 of 3
Something must be wrong if you are getting 65-75 degrees C with stock speeds. Using my Megatron and only 1000RPM (silent) I stay in the low 50's in prime 95 at stock speeds.

At 3.7 GHz I see high 60's at 1000 RPM.

Have you checked to make sure you don't have a blockage?
    
CPUMotherboardGraphicsRAM
i7 950 3.2 GHz at 1.0V Asus Rampage III Formula Asus HD6870 6GB Mushkin Redline 1600MHz 6-8-6-24 
Hard DriveOptical DriveCoolingOS
Samsung 250 GB SSD,2X 1TB F3, 250GB WD Blue, 1T... Asus BD Megahalems black chrome edition Windows 7 Professional 
MonitorKeyboardPowerCase
2x Asus 24" Mac keyboard Enermax ERV950EWT Silverstone FT02 
MouseMouse PadAudio
Logitech MX518 Steelseries I-2 Onkyo 1000W 7.1 surround through HDMI 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i7 950 3.2 GHz at 1.0V Asus Rampage III Formula Asus HD6870 6GB Mushkin Redline 1600MHz 6-8-6-24 
Hard DriveOptical DriveCoolingOS
Samsung 250 GB SSD,2X 1TB F3, 250GB WD Blue, 1T... Asus BD Megahalems black chrome edition Windows 7 Professional 
MonitorKeyboardPowerCase
2x Asus 24" Mac keyboard Enermax ERV950EWT Silverstone FT02 
MouseMouse PadAudio
Logitech MX518 Steelseries I-2 Onkyo 1000W 7.1 surround through HDMI 
  hide details  
Reply
post #3 of 3
Thread Starter 
yeah theres no blockage, but the other thing is the water cooler block isnt hot either... it seems to me like the heat isnt getting from the cpu to the cooler. the cooler isnt hot, when the temps are at 85 degree core temp, the cooler is at water temp, its fine to touch. i spent a few hours today taking the cooler on and off varying amounts of thermal paste but got no better performance. from start to finish core 1 and 2 were the exact same temps after testing with real temp, and cores 3 and 4 lowered by one degree.. i started with cleaning the cpu and cooler, then applied the thinnest layer i could to the cpu, could just see the cpu print on the back through the paste, held the cooler in place and moved it around a bit, then looked at the area touching, only 2 small patches on opposite sides of the cpu touched the cooler. i did this over and over increasing the thickness of thermal paste until i had the entire surface in contact. it seemed to need a lot more paste to contact the whole surface, i get the impression the cpu isnt flat. and i say that purely based on the fact that the water cooler worked wonders on my old q6600 cpu, but just not doing it here...
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Intel CPUs
Overclock.net › Forums › Intel › Intel CPUs › i7 950 running hot