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CPU temp rises much more than ambient does?

post #1 of 7
Thread Starter 
I'm currently using a H100i push-pull with enermax 1700RPM 120mm's (2x vegas duo and 2x vegas blue). It's mounted with CLU on to a slightly lapped 2500K. I even adder some spacers between the bracket and the pump/block for more pressure which did wonders for my temps.

Now, it's been ridiculously hot here lately and I find my temps behaving very wierdly when ambient in my room rises. Usually it's at or around 19-20c. Now withthe heat it is between 30-35c.

Temps: 5.3 @ 1.472 @ 20c ambient: 62-63c in games, 75c prime95, 82c AVX.
Ambient rises to 30c so +10c, games shoot as high as 80c, prime hits 95c and AVX is un runnable. That's ~15c more temps with just 10c more ambient..

Temps: 5.1 @ 1.400 @ 20c ambient: 50-52c in games, 65c prime95, 71c AVX.
Ambient rises to 35c so +15c. Games play at ~68-70c, prime hits 85-88c, AVX un runnable.

Temps: 4.8 @ 1.312 @ 20c ambient: Games at 45-48c, 60c prime, 65c AVX.
Ambient of 35c, games run at 63c, prime hits 75c, AVX 83c.

Conclusion: At 4.8 1.312v it all adds up fine.
Higher volts / clocks make the temp rise quite a lot more then ambient actually rises...
What is causing this.. Is the H100i just not efficient enough or smthn?

I plan to go full loop for a while but since I don't really have a proper job i'm going to have to hold out with it first..
Thundahcat.
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Thundahcat.
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Hard DriveCoolingOSOS
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post #2 of 7
The hotter the air is, the harder it is to dissipate heat. It's kind of like your own body, except we also have to factor in the humidity due to the way our skin works, but still: the hotter it is, the harder it is to dissipate any heat and so there's extra heat build-up. This means that the temps get higher faster when the air is hotter.
It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
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250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
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Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG 
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It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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post #3 of 7
Thread Starter 
So as long as i'm using my H100i and not a nice 60mm 360 rad (Alphacool NexXxoS UT60?) and proper block i'm stuck with downclocking to 4.8Ghz in hot ambients frown.gif

I was planning on getting a cheap 2ndhand 2600/3770k since in some programs I use I miss HT a bit (had a bad clocking 2600K before) and hell, even BF3 sees 90% CPU usage..
Thundahcat.
(20 items)
 
   
CPUMotherboardGraphicsRAM
AMD Athlon XP-M Barton @ 2612Mhz ASUS A7N8X-X HIS Radeon X800XL 256MB w/ V-MOD @ 585Mhz GPU 5... 3x512MB Samsung PC-3200 CL3 
Hard DriveCoolingOSOS
Maxtor 80GB IDE Cooler Master alu/copper block with a Slipstrea... Windows 98 SE Windows XP Pro SP3 
PowerCase
Cooler Master Real Power M520W OEM with great airflow and even cable management 
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Thundahcat.
(20 items)
 
   
CPUMotherboardGraphicsRAM
AMD Athlon XP-M Barton @ 2612Mhz ASUS A7N8X-X HIS Radeon X800XL 256MB w/ V-MOD @ 585Mhz GPU 5... 3x512MB Samsung PC-3200 CL3 
Hard DriveCoolingOSOS
Maxtor 80GB IDE Cooler Master alu/copper block with a Slipstrea... Windows 98 SE Windows XP Pro SP3 
PowerCase
Cooler Master Real Power M520W OEM with great airflow and even cable management 
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post #4 of 7
Yeah, I heard that BF3 takes advantage of HT, but I couldn't squeeze any proof out of the person who told me. lol I guess this is proof!

Anyway, yeah I feel your pain: 4.8 GHz is extremely slow! smile.gif Plus, I mean, it just doesn't look as awesome as 5.3 GHz.
It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
post #5 of 7
Thread Starter 
True lol. There's absolutely 0 noticable performance difference between 4.8 and 5.3.

CPU load in BF3 is high in 64p CQ. Especially DLC maps. Teamspeak, Chrome, audiodg.exe (G35 enhancements and downsampling BF3 audio), sidebar, coretemp, msi ab and such take ~10-15% in-game. Game takes ~70-80% so most of the time my CPU runs over 90%. A little more headroom would do as sometimes it drops FPS a bit when for some reason it taps 100% for a sec.

BF3 uses max 6 threads according to my old i7 920 rig so HT would def. help.
Thundahcat.
(20 items)
 
   
CPUMotherboardGraphicsRAM
AMD Athlon XP-M Barton @ 2612Mhz ASUS A7N8X-X HIS Radeon X800XL 256MB w/ V-MOD @ 585Mhz GPU 5... 3x512MB Samsung PC-3200 CL3 
Hard DriveCoolingOSOS
Maxtor 80GB IDE Cooler Master alu/copper block with a Slipstrea... Windows 98 SE Windows XP Pro SP3 
PowerCase
Cooler Master Real Power M520W OEM with great airflow and even cable management 
  hide details  
Reply
Thundahcat.
(20 items)
 
   
CPUMotherboardGraphicsRAM
AMD Athlon XP-M Barton @ 2612Mhz ASUS A7N8X-X HIS Radeon X800XL 256MB w/ V-MOD @ 585Mhz GPU 5... 3x512MB Samsung PC-3200 CL3 
Hard DriveCoolingOSOS
Maxtor 80GB IDE Cooler Master alu/copper block with a Slipstrea... Windows 98 SE Windows XP Pro SP3 
PowerCase
Cooler Master Real Power M520W OEM with great airflow and even cable management 
  hide details  
Reply
post #6 of 7
I went straight from stock to 4.7 GHz, and I don't remember feeling or noticing any difference. I only kept the overclock because, well, why not? smile.gif
It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
post #7 of 7
Holy **** man, I almost run all of that plus recording on OBS and my cpu hits maybe 45-50%. That's with a 3770k though. I'm gonna have to downsample BF3 to get more usage outta my cards though. Look for s 3770k, it's easy better than my old 2500k.

Meh, that was with 4.5 oc... stock, haven't really looked.
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