overclocking 3570k

davethe11

davethe11

davethe11

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uk
I'm new to the Sandy/Ivy way of doing things, I've just built a new build for someone and would like to feedback on my overclock, here are the specs:

3570k
Gigabyte D3H
Corsair XMS3 8GB
212 evo
450W Corsair PSU

As you can see from the PSU I don't want to push the cpu to much, rather I want a nice stable and cool 4.2GHz. The machine is a gaming machine, but not for the demanding titles like BF3 etc.

Here is what I have at the moment:

Bios:

CPU freq 100
CPU VCore 1.085 V (normal/default)
Dynamic VCore -0.03 V
CPU Clock ratio and all boosts set to x42
PLL 1.7 (reduced from 1.8)

windows (prime95 running):

1.08 V (CPU-Z)
1.5 V VID (Coretemp)
prime95 2hrs
63 max temp (Coretemp)


So this seems stable at 4.2 which is fine, I would just like any suggestions or comments on having the boosts at the same frequency, on maybe setting the CPU VCore manually and any other suggestions. I still want to maximise the setups potential, but from a cool and lower watt perspective.
 
Mine is running 1.1volts @ 4.2ghz on the same motherboard. I bought the OC bundle for £299. It's the best £300 i've ever spent !

Next I might get the Corsair Carbide Enthusiast Bundle as I'm currently 40-45 idle and 65-70 max temps.


*correction. Mine is running at 1.16v. *
 
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Yeah I'm really impressed with this build so far, prime95 blend 5 hours stable, I'm running some more stress tests today but all seems well so far and the temps seem good too, maybe I've just struck lucky for a change and got a good overclocker.

How do people generally set their turbo settings? All the same frequency, or scale down with more cores?
 
Do you have a recent version of CPU-Z? Try hardware monitor to see the Vcore in there. Either you are really lucky and got a 1.1V VID chip or it's reporting the wrong voltage. :p

I just set mine to 34/45 on turbo, and enable C1E. I disable EIST and C3/C6.
 
CPU-Z is 1.62.0, CPUID confirms vcore, will post a screenshot soon, I just want prime95 to warm up the cores for a bit to show temps too. This does sound fishy, I've had average luck with chips in the past, but then again, this isn't my machine lol so it's typical :D
 
ok here's a screenie - link

I need to run some 7 hour+ tests to be happy, and some IB tests, and play some games etc etc, but it's looking pretty good so far, any thoughts?
 
Nice comparison to be seen there between our chips, I'm pretty happy with my temps and it must be because of the lower vcore (ambient temp in my room is normal room temp too). 4 hours on Prime95 large FFT now, max temp 64, so so far so good. I've noticed that the VID changes depending on clock settings, I may be wrong but I'm sure pre-sandy/ivy this was a fixed value for the cpu? I assume as the turbo feature seems to be an integrated feature that Intel have a VID for different frequencies? If this build is ultimately stable then I'm going to try reducing voltages and see if I can get cooler temps with lower power. I notice that in your screenie, coretemp is not registering power usage? I do have version 1.0 RC4 though, maybe that explains it.

[edit] by the way, I reduced my PLL voltage in the bios from stock 1.8 to 1.7 - this may help your temps. From overclocking my Q9550 I found that PLL can help, and I've read here and there that a small tweak to the voltage can keep a stable but cooler overclock on these chips.
 
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yeah like BrianB said, don't set to manual, set to normal and you can change it then.

Had a 6 hour Prime95 test with no probs, Intel Burn test maximum 10 pass success (72 temps which I am happy with). Gonna do a IBT 30 pass tomorrow then play a few games before I start trying to get voltages down even more :)
 
passed Intel Burn test max 30 passes, seems a stable overclock, still have to do the ultimate stress test and write a few word docs, play a game, and browse the web for a bit :D
 
Ive just set my multiplier to 45, kept VCore on auto and dropped the PLL down to 1.65.

Running Prime for 1 hour my Core Voltage is reading 1.240 in CPU-Z and may max temps are 75deg C in CPU hardware monitor.

Quite happy with the results to be honest, an easy overclock to 4.5ghz :). ill keep prime running to test for stability but so far its looking good.

BTW im using a Phanteks PH-TC14PE inside a Antec P280 with just the stock case fans switched to low on the cases fan controller.
 
Attu90 said:
The PLL is in advanced voltage ...4th option down I think.
Click to expand...

Thanks Attu90,

I'll try it when I get home tonight.

I'm still trying to decide which fans to get. My temps are fine now (my CPU fan was only spinning at 400rpm, fixed this now) so 2 case fans a one cpu will do the trick for now. I'm just after low noise.
 
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