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Ivy Bridge Overclocking Guide ► Asus Motherboards - Page 25

post #241 of 7032
Thread Starter 
Quote:
Originally Posted by shankstas View Post

Its ok, you've been a great deal of help! This is where I'm at so far:

vcore 1.2200 x45 Ram timings 9-9-9-24 2T DRAM speed 1333
vcore 1.230 x 45 BSOD 124
vcore 1.235 x 45 Low Memory
vcore 1.240 x 45 Prime crashed
vcore 1.245 x 45 Prime Crashed
vcore 1.250 x 45 Lucid MVP crashed at startup
vcore 1.250 x 45 Prime Failed
vcore 1.255 x 45 Prime Failed
vcore 1.260 x 45 Prime Crashed crashes at (800000 test?)
vcore 1.265 x 45 Prime Failed
vcore 1.270 x 45 Prime Failed Highest temp 84C
vcore 1.275 x 45 Currently testing this as I write the reply (1hr 12min in so far)

There mainly crashing at the 800000 test (20min mark); Other things I failed to mention is that I have the igpu enabled (does that even matter?).

When I'm in bios the CPU voltage display is always 0.005V's higher than what I set it to. Just wondering if this is normal. Example: 1.225 but on top it states that CPU Voltage is 1.230V (next to manual mode)

If I find a voltage that I'm stable should I wait the 12hours to change my ram timings back to what they were? Or can I just leave it for an hour instead and change them back for a 12hr run?

As for going back to offset mode, I read the formula you've been using. So do I go back into offset mode after a 12hr run or should I still do another 12hr run after setting up offset mode?

When it comes to the VID, I need the value while the processor is under load? As for the Vcore do I get that from what I manually put in BIOS or is it whats displayed in CPU-Z? Assuming I'm stable after this run then Vcore - Vvid = Voffset; so 1.275 - 1.2810 = -0.006; My VID goes from 1.2810 to 1.2860. (Not sure which value to choose). This also means I would choose the negative sign in BIOS since I get -0.006?

Il also be using BOINC so I guess as long as its not at 94C 24/7 Im safe?

Once I'm stable including offset I'm assuming I can lower the PLL? What else can i lower?

Let me know if I'm still on the right track and thanks again!

1. Make DRAM timings into 9-9-9-24 and DRAM Speed to 1333.

2. Make sure you are using manual vcore when stress-testing. Once you go to offset afterwards, you DON'T have to re-stress-test!

3. Use the highest VID.

4. You are safe at 94C!

5. Just lower PLL because other voltages shouldn't be changed and they don't show any difference in temp and all you are doing is increasing the chance of an unstable OC!
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post #242 of 7032
Hi, first of all thanks for the guide and this thread is an awesome source of info. I have a brand new build of an Asus P8Z77-V and i5 3570K, with Corsair H100 cooling solution. I have my bios set up according to the guide.I feel I have a bad overclocker only being able to hit 4.5 but at higher than average v-core. Im currently at 4.5 using a + offset of .020 and my full load v-core is reported by CPU-Z as 3.52v-3.6v. VID is reported by Core Temp as being 1.3311v. The only plus to this is my full load temps running P95 are mid 60's to low 70's sometime spiking up to low 80's. Any advise is appreciated. One question....Am I the only one who sees only the stock CPU frequency on the post screen and System Infomation in Win 7 even with an overclock? Kinda odd.
post #243 of 7032
Thread Starter 
Quote:
Originally Posted by dbhender View Post

Hi, first of all thanks for the guide and this thread is an awesome source of info. I have a brand new build of an Asus P8Z77-V and i5 3570K, with Corsair H100 cooling solution. I have my bios set up according to the guide.I feel I have a bad overclocker only being able to hit 4.5 but at higher than average v-core. Im currently at 4.5 using a + offset of .020 and my full load v-core is reported by CPU-Z as 3.52v-3.6v. VID is reported by Core Temp as being 1.3311v. The only plus to this is my full load temps running P95 are mid 60's to low 70's sometime spiking up to low 80's. Any advise is appreciated. One question....Am I the only one who sees only the stock CPU frequency on the post screen and System Infomation in Win 7 even with an overclock? Kinda odd.

It means you have disabled full boot in BIOS for the post screen. That looks fine. You shouldn't really worry about it. You can run at 4.5 and your temps are amazing! My temps at 1.18vcore is higher than yours! It's crazy, Anyway, Do you have any questions about overclocking? The guide allows you to be able to get the lowest possible vcore so more than likely you have the lowest vcore already.
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post #244 of 7032
Thanks Swag, on my Asus P8Z77-V I dont have any option for Full Boot that I can see. Have gone through every setting with a fine tooth comb and cant figure out why its posting default cpu speed when its running at 4.5. Not a biggie just an annoyance. Had some stability issues....one core failed in P95 after a little over an hour. Increased offset to .030 and increased PLL a bit too. Running stress test again.
post #245 of 7032
Thread Starter 
Quote:
Originally Posted by dbhender View Post

Thanks Swag, on my Asus P8Z77-V I dont have any option for Full Boot that I can see. Have gone through every setting with a fine tooth comb and cant figure out why its posting default cpu speed when its running at 4.5. Not a biggie just an annoyance. Had some stability issues....one core failed in P95 after a little over an hour. Increased offset to .030 and increased PLL a bit too. Running stress test again.

Ok, tell me if you have any other problems. tongue.gif
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post #246 of 7032
I'm newb to overclocking. Messed around with my asus p5b-vm do board and e6420 last night and got it up 200mhz biggrin.gif and somehow manged to drop 5c on idle(cleaned the dust of the cpu heatsink )....

Anyways I'm building a budget gaming machine.


ASUS P8Z68-V PRO/GEN3
Purchased $70 ebay
Celeron G540
Purchased $50 newegg
Tuniq Tower 120 Extreme
will purchase with ivy/sandy i5k

So my question is, with this board and cooler will the ivy have a higher semi-full time stable overclock? "also taking into account ivy runs hotter"
or when it comes time for the i5k purchase just get the one thats cheaper?

Also i like the Blue Corsair Vengeance with the board and cooler
is the low lat worth $15 more for overclocking or even better at all sense the timing can be changed?

I have a feeling this is a obvious answer: like changing timings is not the same as native and the lower lat is worth it for oc'ing... i would look this one up, but i'm spent on research after oc'ing my c2d on a non oc board :/

Cmz8gx3m2a1600c9b $40
Cas lat 9
Timing 9 9 9 24
Volt 1.5

Cmz8gx3m2x1600c8b $55
Cas lat 8
Timing 8 9 8 24
Volt 1.5
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post #247 of 7032
Thread Starter 
Timings do almost nothing in terms of performance with Ivy Bridge.

Skip that RAM and get Samsung DDR3 RAM!
You will probably reach high 80s during stress-testing but don't worry about it. The max during stress-testing is 95C and you will probably be away from that if you OC to 4.5GHz.
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post #248 of 7032
So no go on the Sandy i5k?

The Samsungs not blue! lol
Thxs, i think i might get that ram, it has great oc reviews.
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post #249 of 7032
Thread Starter 
Quote:
Originally Posted by yeliyayue View Post

So no go on the Sandy i5k?

The Samsungs not blue! lol
Thxs, i think i might get that ram, it has great oc reviews.

You can make custom RAM heatsinks. tongue.gif I would much rather purchase the Ivy Bridge because they are faster clock-for-clock.
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post #250 of 7032
Quote:
Originally Posted by Swag View Post

1. Make DRAM timings into 9-9-9-24 and DRAM Speed to 1333.
2. Make sure you are using manual vcore when stress-testing. Once you go to offset afterwards, you DON'T have to re-stress-test!
3. Use the highest VID.
4. You are safe at 94C!
5. Just lower PLL because other voltages shouldn't be changed and they don't show any difference in temp and all you are doing is increasing the chance of an unstable OC!

Ok, I just did a 24hr prime test with the last settings I did (vcore 1.275 x 45) and everything was stable. Btw all the tests I did in my previous post had the timings at 9-9-9-24 and DRAM Speed to 1333 like you originally said. Is the reason you restated the DRAM timings was to make sure I didn't put my memory to stock for my tests? Anyways, heres a link to my RAM

At vcore 1.275 x 45 I put my timings back to 10-11-10-30 2T at 1866. I played Tribes/CSGO for about an hour and everything was fine. But as soon as I tried prime again 1 of the cores failed within 2 min. I'm now at vcore 1.280 x 45 and its been running for about 15min. Ill just do another 24hr run since I have to work etc.

BTW if we assume I'm stable after tonight, since my offset is a negative value (-0.006) do I still leave the Offset mode sign as positive or do I switch it to negative? Thanks again!
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