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Intel Pentium G3258 Performance and Owners Club NOW with GTX 970 - Page 114

post #1131 of 4581
I hope Broadwell will overclock better

I bought a Z97 board so I can switch to Core i5/i7 Broadwell next year
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post #1132 of 4581
Quote:
Originally Posted by bigpoppapump View Post

Well it's been more than three hours but I can confirm that the Gigabyte B85M-DS3H can't use Vcore offset

because the setting is directly below Vcore and it's locked.

I've spent hours staring at that screen, don't know how I didn't remember it. redface.gif
Hmm, he was able to change it with both F6 or F5 BIOS somehow, and I assume you're on one of those. Does it matter if you leave the voltage on AUTO or manually set it to 1.2v in being able to get to vCore offset?

I have no recollection of that setting either, so you're not alone. lol.
post #1133 of 4581
Quote:
Originally Posted by TPCbench View Post

I hope Broadwell will overclock better

I bought a Z97 board so I can switch to Core i5/i7 Broadwell next year

We should mainly hope it's faster while it overclocks worse. This is because the smaller the transistor process (it goes 14nm) the harder it is to deviate from factory voltage. This is explained well on an NVIDIA(with Intel data) presentation that I could link.


PS. I would switch too if it's like 20%+ faster or if I want to spend the money though it's likely to be like +10% and uninteresting.
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post #1134 of 4581
I'd like to add that I may have gotten a dog of a chip, or I'm doing wrong. Just upgraded from a c2d, so it's possible my inexperience is to blame. I've got a asrock h81m-hds, using an old Tuniq Tower as a cooler. I'm having trouble getting past 4.1ghz, even with my vcore at 1.4v. I can run aida64, and never see a temp over 63. The ambient temp here in this basement is about 60F so it helps quite a bit with cooling. Any input or advice to crank this guy up? I've skimmed most of this thread, tried many settings including uping volts in system agent, i/o digital and analog, still no go. I have noticed however that I don't believe this board allows me to adjust cpu input voltages.
post #1135 of 4581
other then point out the obvious:

1. http://www.overclock.net/t/1411077/haswell-overclocking-guide-with-statistics/0_40
2. check your bsod bugcheck code
3. check your stock vcore is it above 1.1v?

there doesn't seem to be much that can be done, it seems it is a lottery and some processors can't go that far
as long as vrin is 0.4v above vcore it is no problem, if you increase vrin it might mean you can drop vcore a bit but not much
post #1136 of 4581
Quote:
Originally Posted by fishinfool88 View Post

I'd like to add that I may have gotten a dog of a chip, or I'm doing wrong. Just upgraded from a c2d, so it's possible my inexperience is to blame. I've got a asrock h81m-hds, using an old Tuniq Tower as a cooler. I'm having trouble getting past 4.1ghz, even with my vcore at 1.4v. I can run aida64, and never see a temp over 63. The ambient temp here in this basement is about 60F so it helps quite a bit with cooling. Any input or advice to crank this guy up? I've skimmed most of this thread, tried many settings including uping volts in system agent, i/o digital and analog, still no go. I have noticed however that I don't believe this board allows me to adjust cpu input voltages.

Have you updated the BIOS of the board ? According to ASRock's website, Pentium G3258 is supported starting from BIOS P1.80
http://www.asrock.com/mb/Intel/H81M-HDS/?cat=Download&os=BIOS

Manually set the CPU uncore (aka CPU cache) ratio to 32. It is possible that your board automatically overclocks the CPU uncore when the CPU core is overclocked

Leave the DRAM speed, timings, and voltage to Auto. Do not enable Intel XMP yet

Try setting the VccIN (aka VRIN) to 1.7 to 1.9 V depending on core voltage. In my case, Pentium G3258 @ 4.3 GHz using 1.325 Vcore requires a VccIN of 1.990 V. If VccIN is insufficient, you won't get stability even if you increase Vcore

Check this for a more detailed guide to overclocking Haswell
http://www.overclock.net/t/1411077/haswell-overclocking-guide-with-statistics
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post #1137 of 4581
I'm on the most update to date BIOS, even downgraded and tried. That's the thing, there's no option to change VRIN, vccin, or cup input voltage. I fear that may be this board's limitation.
post #1138 of 4581
Quote:
Originally Posted by fishinfool88 View Post

Try setting the VccIN (aka VRIN) to 1.7 to 1.9 V depending on core voltage. In my case, Pentium G3258 @ 4.3 GHz using 1.325 Vcore requires a VccIN of 1.990 V. If VccIN is insufficient, you won't get stability even if you increase Vcore
Is there a disadvantage to just cranking the VccIN up to 1.9-2.0v and not having to worry about it when overclocking? Does it cause a noticeable difference in power usage or heat?
post #1139 of 4581
Quote:
Originally Posted by dxt55 View Post

Quote:
Originally Posted by fishinfool88 View Post

Try setting the VccIN (aka VRIN) to 1.7 to 1.9 V depending on core voltage. In my case, Pentium G3258 @ 4.3 GHz using 1.325 Vcore requires a VccIN of 1.990 V. If VccIN is insufficient, you won't get stability even if you increase Vcore
Is there a disadvantage to just cranking the VccIN up to 1.9-2.0v and not having to worry about it when overclocking? Does it cause a noticeable difference in power usage or heat?

VIN raises heat, power and danger when it's higher. Though it's not as severe on impact as Vcore. It can go places more liberally.

It's the input voltage of the internal voltage regulators, something like the internal "PSUs". The Vcore actually drives the cores.

So, it has an impact and it needs being careful but the overclock itself is mainly affected by the Vcore.


In practice the VIN stabilizations are indirect since they result to stabler resulting voltages.
Edited by fateswarm - 8/31/14 at 3:48pm
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post #1140 of 4581
Quote:
Originally Posted by fateswarm View Post

VIN raises heat, power and danger when it's higher. Though it's not as severe on impact as Vcore. It can go places more liberally.

It's the input voltage of the internal voltage regulators, something like the internal "PSUs". The Vcore actually drives the cores.

So, it has an impact and it needs being careful but the overclock itself is mainly affected by the Vcore.


In practice the VIN stabilizations are indirect since they result to stabler resulting voltages.
My Gigabyte B85 board automatically sets VIN to 2.0v when I have the CPU overclocked to 4.3Ghz (vCore at the max allowed of 1.2v). It sounds like I should take VIN out of automatic mode and manually set it to 1.7v (or the lowest stable). Is there a default VIN for the G3258, or does it vary chip-to-chip like the stock vCore?
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