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Semi-beginner question

post #1 of 4
Thread Starter 
Howdy all, I'm fairly new to overclocking and am fairly self-taught as far as computer hardware goes so forgive me if my terminology isn't 100%. I have read this guide which has been posted in a few other threads already.

Question 1: When overclocking, is it possible to still allow the CPU to throttle back during periods of low load? By default, my CPU (Phenom II X4 965BE) will throttle back to 800mhz during periods of low load. It'd be awesome to be able to overclock my CPU to 4000, 4200mhz when load is high but when I'm just browsing the internet, letting clock speeds and voltages dip down to give my CPU a break both in terms of heat and wear from increased voltages. If this is possible, how exactly does one configure this?

Question 2: Every site I've read seems to reference a max temperature for my CPU anywhere from 62 degrees to 65. I understand that when running stability tests in prime95/etc you'll want to keep temperatures down, but how much of a downside is it really to be above that? Back before I knew much about computers, my old laptop would occasionally stick at around 70 for hours and I had zero issues and the computer lasted me 4+ years (and was still working when I ditched it). And how often will one REALLY push their CPU as far as Prime95 will? If I'm pushing 70 degrees or so in Prime95, am I taking additional years off my CPU's life or is it mostly a danger of having less "wiggle room"?

Here's details on my specific setup for reference:

CPU: AMD Phenom II x4 965BE (125W revision)
Motherboard: ASUS M4A87TD/USB3
Cooling: Corsair H50 (shortly, using air at the moment)

Thanks in advance for any help.
Porforis
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 965BE ASUS M4A79XTD EVO GIGABYTE GV-N460OC-1GI GeForce GTX 460 8GB OCZ 
OSMonitorPowerCase
Windows 7 x64 37" Samsung TV Rosewill RX850-S-B 850W Continuous Rosewill CHALLENGER 
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Porforis
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 965BE ASUS M4A79XTD EVO GIGABYTE GV-N460OC-1GI GeForce GTX 460 8GB OCZ 
OSMonitorPowerCase
Windows 7 x64 37" Samsung TV Rosewill RX850-S-B 850W Continuous Rosewill CHALLENGER 
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post #2 of 4
1. Yes, cool'n'quiet should still work, unless you are using a really high multiplier i.e. x19, then it might stop working
2. Lower temperatures are better because Phenom II likes running cooler; when you get lower temperatures, you can run lower voltage. I used to run 4Ghz 1.475V 58C load on a Xigmatek Dark Knight, I can now run at 4.05Ghz 1.425V at 49C CPU (38 core) load due to the NH-D14.
3. Don't OC on that motherboard until you get MOSFET cooling (4+1 phase unheatsinked + tower cooler) read sig for more info
post #3 of 4
1. yea usually there is an option in the bios to tun on and off the "throttle" so if you just oc to 4ghz and already have the throttle on it should make the jumps
2. really depends on user preferance some people are fine with thier cpu at 70c and some people like me always want the lowest temps possible at full loads; however i do not recommend having any cpu above 70c. and you can run prime for as long as you want just keep an eye after an hour or so when the temp stabilize that it doesn't go over 70
Bernice
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Athlon II X4 635 Foxconn Aloe 1.01 Radeon HD 4350 Kingston ddr3 2gb X3 
Optical DriveOSMonitorKeyboard
Light scribe Windows 7 Home Premium Asus VW246H, Dell 17" Hp stock 
CaseMouse
stock hp pavillion e9300z HP stock 
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Bernice
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Athlon II X4 635 Foxconn Aloe 1.01 Radeon HD 4350 Kingston ddr3 2gb X3 
Optical DriveOSMonitorKeyboard
Light scribe Windows 7 Home Premium Asus VW246H, Dell 17" Hp stock 
CaseMouse
stock hp pavillion e9300z HP stock 
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post #4 of 4
Thread Starter 
Quote:
Originally Posted by xd_1771 View Post
1. Yes, cool'n'quiet should still work, unless you are using a really high multiplier i.e. x19, then it might stop working
2. Lower temperatures are better because Phenom II likes running cooler; when you get lower temperatures, you can run lower voltage. I used to run 4Ghz 1.475V 58C load on a Xigmatek Dark Knight, I can now run at 4.05Ghz 1.425V at 49C CPU (38 core) load due to the NH-D14.
3. Don't OC on that motherboard until you get MOSFET cooling (4+1 phase unheatsinked + tower cooler) read sig for more info
Thanks for the response! Answered all my questions, taught me some stuff I never knew that I didn't ask for (but still great to know), and potentially saved me a nice chunk of money. Once I located the MOSFETs and noticed how much hotter they got even with a moderate overclock, I realized that CPU cooling was only half (maybe even less than that) of my problem. :O

My mobo does seem to have a minor defect (that doesn't really affect me) so I'm trying to see if I can RMA it, and if Asus would let me pay the difference between the cost of that board and one that's a bit more stable for higher-end overclocking. Thanks again for the helpful links/good reads, but maybe those things should be stickies in all the vendor-specific CPU overclocking forums?
Porforis
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 965BE ASUS M4A79XTD EVO GIGABYTE GV-N460OC-1GI GeForce GTX 460 8GB OCZ 
OSMonitorPowerCase
Windows 7 x64 37" Samsung TV Rosewill RX850-S-B 850W Continuous Rosewill CHALLENGER 
  hide details  
Reply
Porforis
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 965BE ASUS M4A79XTD EVO GIGABYTE GV-N460OC-1GI GeForce GTX 460 8GB OCZ 
OSMonitorPowerCase
Windows 7 x64 37" Samsung TV Rosewill RX850-S-B 850W Continuous Rosewill CHALLENGER 
  hide details  
Reply
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