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questions about overclocking

post #1 of 18
Thread Starter 
Hello, just picked up an i7 3770k with an h80i. Anywho I want to water-cool it. Read the guides and I was just wondering if my basic understanding of how to do this is ok:
BTW I have an asus z77 sabertooth motherboard (thermal armor edition)

1) Go to bios and change multiplier to x45 (I don't know exactly which multiplier, would be nice if someone clarified)
2) Disable turboboost
3) Change V-core to 1.3
4) Go to windows and test stability & temps with prime95(Note that when I launch prime 95, there are 3 options for torture test: Small FFTs, In-place large FFTs, Blend, Custom... I have no idea which one to choose, please help here lol). Run test overnight
5) If it's unstable or temps too high, keep lowering voltage until you get stable cpu
6) Done?

Thanks for the help : )
Lel
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Lel
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post #2 of 18
Quote:
Originally Posted by tercac View Post


1) Go to bios and change multiplier to x45 (I don't know exactly which multiplier, would be nice if someone clarified) The CPU multiplier
2) Disable turboboost
3) Change V-core to 1.3
4) Go to windows and test stability & temps with prime95(Note that when I launch prime 95, there are 3 options for torture test: Small FFTs, In-place large FFTs, Blend, Custom... I have no idea which one to choose, please help here lol). Run test overnight
The large-FFT test exercises the CPU (especially the FPU) and L1/L2 cache hard (but possibly not as hard as small-FFT, if memory fetch is slow) and puts a heavy load on memory buses and non-cache RAM. However, the load it puts on main memory is not the same pattern as the load that Memtest puts on memory, so it is not a replacement for Memtest. Prime95 large-FFT is always fetching several megs of memory as fast as possible (thus stressing the memory controller and bus and cache), but is not systematically testing different parts of your RAM as Memtest does.
5) If it's unstable or temps too high, keep lowering voltage until you get stable cpu
Lower voltage if stable, raise voltage if unstable.
6) Done?)

What you're doing is "cookbook" overclocking. There's much more to it that you propose, though that will (should?) work. Your problem is that if it doesn't work (or you don't get all the speed possible), you will have no idea what to do.

He who tries the most goes the fastest!
My System
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FX6300 Black M5A99X EVO R2.0 Nvidia GTS450 Team Vulcan PC3 12800 
Hard DriveOptical DriveCoolingOS
Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
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2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
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My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
FX6300 Black M5A99X EVO R2.0 Nvidia GTS450 Team Vulcan PC3 12800 
Hard DriveOptical DriveCoolingOS
Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
MonitorKeyboardPowerCase
2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
MouseAudio
Logiteck G400s none 
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post #3 of 18
Thread Starter 
Thanks for the advice. I also read about people using offset oc, which alows cpu to slow down when idling. How do I enable that? Is it as simple as selecting offset true in bios? Thanks wink.gif
Lel
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Intel i7 3770k @ 4.2 GHz Asus Z77 Sabertooth with thermal armor EVGA GTX 680 FTW+ SC 4GB Vram 4 gb ddr3 (lel) 
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120 gb SanDisk Extreme SSD CM Storm Enforcer 
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Lel
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post #4 of 18
You want to change the Turbo Multiplier, and you don't want to disable turbo boost because that's the way overclocking these chips actually works. But otherwise you have the right idea. As for offset, it's best to find a stable overclock with a fixed voltage first, then switch to offset once you get it dialed in. Fewer moving pieces that way.
post #5 of 18
Thread Starter 
Hey so I went on the bios but I couldn't find the cpu/turbo (are they the same thing) multiplier, this is what I get:
Lel
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Lel
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post #6 of 18
Should be at the top of that BIOS page. You might have to change AI Overclock Tuner (I think that's the name) to manual to get them to show up.
post #7 of 18
Thread Starter 
Yes I got it. Changed it to 42 as I have NO idea how to change the actual cpu voltage without taking it off offset mode... So far ive been running prime95 for 30 minutes and it hasn't crashed and the temps max out at 70C... is this normal or should I replace thermal paste? Also how in the world do i change cpu voltage lol
Lel
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Intel i7 3770k @ 4.2 GHz Asus Z77 Sabertooth with thermal armor EVGA GTX 680 FTW+ SC 4GB Vram 4 gb ddr3 (lel) 
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Lel
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CPUMotherboardGraphicsRAM
Intel i7 3770k @ 4.2 GHz Asus Z77 Sabertooth with thermal armor EVGA GTX 680 FTW+ SC 4GB Vram 4 gb ddr3 (lel) 
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post #8 of 18
What cooler? 70s is fine for the temps. You need to change it from Offset to Manual (the CPU Voltage option) and then you can set a fixed voltage underneath.

Edit: I see now you have an H80i. I'd think the temps would be a little lower at 4.2, but 70s is fine. What's the voltage (from CPU-Z)?
Edited by Forceman - 2/1/13 at 3:14pm
post #9 of 18
Thread Starter 
The cooler is the corsair h80i... had a problem with installation and some of the thermal paste rubbed on the cpu and was exposed to the air for a couple of minutes... OK but won't that mean that the cpu will always be at say 4.2GHz and therefore lead to higher idle temps? DOsen't offset let it go down when it's not in use?
Lel
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CPUMotherboardGraphicsRAM
Intel i7 3770k @ 4.2 GHz Asus Z77 Sabertooth with thermal armor EVGA GTX 680 FTW+ SC 4GB Vram 4 gb ddr3 (lel) 
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120 gb SanDisk Extreme SSD CM Storm Enforcer 
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Lel
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CPUMotherboardGraphicsRAM
Intel i7 3770k @ 4.2 GHz Asus Z77 Sabertooth with thermal armor EVGA GTX 680 FTW+ SC 4GB Vram 4 gb ddr3 (lel) 
Hard DriveCase
120 gb SanDisk Extreme SSD CM Storm Enforcer 
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post #10 of 18
Yes, fixed mode keeps the voltage the same. If you want to change the offset itself (misunderstood you in the other post) just change it where it says Auto underneath (CPU Offset Voltage) to whatever value you want instead.
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