Overclocking Questions for a Pentium G3258

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Saire

Saire

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Jul 28, 2014
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So recently I built my first computer with intentions of overclocking it, going into I started to realize my goal of overclocking might have been too much, but after spending a good deal of time researching what to do. I got it mostly figured out , so I think.


My build specs are

CPU: Pentium G3258 4.5ghz @ 1.25Vcore
Motherboard: MSI Gaming 5 Z97
RAM: 8gb ddr3 Crucial Ballistics Low Profile, 1600hz.
CPU Cooler: Corsair H100i (pushing air out of the case, mounted on top)
HDD/SSD's, Seagate 1Tb and Crucial 120gb M500.
Case: Corsair 450D
PSU: Rosewill 750W capstone (80 plus Gold)

My question is what exactly should be changed for the best stability, and longevity of the system?

MSI's BIOs Have a lot of options but cross referencing names with other bios is a pain so I could have missed something I needed to change.

Here's what I have changed.

CPU Settings
CPU ratio: 45 (CPU 4.5ghz)
CPU Ratio Mode: Fixed Mode
EIST: Disabled
Ring Ratio: 32 (Ring 3.2ghz)

DRAM settings
DRAM Freq: DDR3-1.4ghz (though bios says it's 1.6ghz not sure why, max on the CPU is 1333)
DRAM Timing mode: Link ( I actually don't think this does anything till I get another stick of RAM )
I set the RAM time configuration from auto to the 9-9-9-24 CR1
Not sure if that matters

Ditgitall Power
CPU Vdroop Offset control: +87.5%

Voltage settings
VCCIN voltage: (on auto running at 1.904v) changed it off auto to just 1.904v
CPU Core Voltage: 1.250v
CPU Ring Voltage: 1.050v

CPU Features
Intel C-state: enabled
Package C state limit: C0
(I've read mixed things about what this should be at from off to C7 to C0)

Ran Linpack on OCCT for an hour max temp it reached was 67C in core #0, Core #1 was much lower around 59C.


This is my first build and overclocking, I think it went pretty good but I figured I should ask some questions on what I've done from people with more experience.

So if you can give me some tips on whether this is good setup or something needs to be changed that'd be great, and thanks in advance!

(By the way I tend to leave out some words when I type, sorry)


 
Solution
Eximo
Not a bad speed at all. I question some of the choices, you could have just gone for an i5 considering what you spent on the rest of the system. Would then have had a quad core.

Do you only have the single memory stick? Ideally you should have two for dual channel memory.

When you get past 4-ish Ghz you should start raising the ring bus speed and voltage up a little. Might have to lower your core clock a little to handle the temperature, but maybe not.

C-States are power saving features, usually I disable them when overclocking.

For longevity, you are running a fairly low core voltage, should be fine for a long while. Some of the overclockers are pushing intel devil's canyon cores to 1.45 volts. (I get stuck around 1.35 with my...
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Eximo

Eximo

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Not a bad speed at all. I question some of the choices, you could have just gone for an i5 considering what you spent on the rest of the system. Would then have had a quad core.

Do you only have the single memory stick? Ideally you should have two for dual channel memory.

When you get past 4-ish Ghz you should start raising the ring bus speed and voltage up a little. Might have to lower your core clock a little to handle the temperature, but maybe not.

C-States are power saving features, usually I disable them when overclocking.

For longevity, you are running a fairly low core voltage, should be fine for a long while. Some of the overclockers are pushing intel devil's canyon cores to 1.45 volts. (I get stuck around 1.35 with my i7-4770k, runs at 4.5Ghz, but at 100C!, so I dialed it down to a more conservative 1.28 @ 4.3Ghz)
 
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Saire

Saire

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Jul 28, 2014
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4,510


Thanks for the feedback,

Yea I probably should have bought an i5, but the first part of this build that I bought was the G3258.
I also have an MSI GS60 for most of my work/needs for now, eventually I plan to update this system after Broadwell's release.

I actually didn't know that about the Dual-Channel RAM, I figured once I started updating the system I wouldn't want 2x 4gb stick laying around, so I went with one stick. Always learning something new!

 
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Eximo

Eximo

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Agreed, waiting on a Broadwell chip myself to replace my poor Haswell sample. Should be interesting along with Maxwell from Nvidia. Probably going to make my 1050W power supply look silly.

Nothing wrong with 16GB of memory. There are slight improvements to be had in SSD performance from having more and faster memory. Basically acts as a buffer between the CPU and the SSD. Adding the second stick will 'double' your bandwidth. Much less then double in practice of course since it can only really get away with that on matching data.

To expand on the C-states a little. If you do run this computer a lot then you can set voltage offsets that will allow for a pseudo automatic voltage range which will let the CPU be stable at both low and high speeds. Save you a bit of power when it is idling. I only turn my big box on for gaming, so never bothered to set it up. My understanding is that when you do this you don't get to pick the top end, so it can still overvolt itself.
 
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Saire

Saire

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Jul 28, 2014
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4,510
With the C-state on C0 still
I let the computer sit for a while and let CPUID HW-Monitor sit, and the CPU Vcore while it idles it sits under .05v with a min of .008v.
So I think having it on C0 is fine as it's not sucking .5-1.25 volts constantly.

I was thinking of raising the Ring voltage to 1.1 and Ring ratio to 4ghz
I might have to mess with it more later, but would this be consider a good/safe increase?

I'll probably invest in another stick of ram after my rebates come back.

Yea it's hard to believe how efficient Maxwell is, while I have the Kepler 860 2gb in my notebook it's surprising more efficient,then what I had expected.

Thanks again for all the help.
 
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