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Sandybridge Overclock not stable

post #1 of 5
Thread Starter 
Hey,

Following problem, it's been alrdy like around 1 month since i got my Sandybridge system and ye how i mentioned my Overclock doesn't feel stable and i get RAM errors/blue screens when i'm playing a game etc. Before i OC'd my system i tested it with prime95 and everything was fine/temps we're fine aswell. But ye i changed my OS to Windows XP SP3 32bit(ye i know it's not good, but i needed it), and i changed the HDD mode to IDE aswell since i couldnt install Windows XP with AHCI mode on, and i've got 4GB RAM aswell.

My setup:
Mainboard S-1155 ASUS P8P67 Pro, ATX
Prozessor INTEL Core i5 - 2500K, 3,30GHz, LGA1155, Quad-Core, Boxed
PSU ATX 650 Watt, CORSAIR 650TX, 80Plus
GFX CARD ATI HD4850 512mb&256bit - for now, keeping it from old PC
G.Skill DIMM 4 GB DDR3-1600 Kit (F3-12800CL7D-4GBRM, Ripjaws-Serie) CL7 8-7-24
DVD-+R/-+RW SATA LG GH-22NS50, bulk,
HDD SATA II Samsung SpinPoint F4, 320 GB, 16MB Cache - from old PC
Miditower XIGMATEK Midgard
Mugen 2 CPU Cooler

I've written down the RAM error if it matters, but i don't think it's fully correct what i have written: "The instruction at "0x13e59a82" referenced at "0xa46f0e6f64". The memory could not be read." - something like that, the numbers are not fully correct i think. Oh and sometimes when i'm in game, playing css - my pc might just stop my sound would just cut off to 1 sound and it would just repeat the same and after some dark screen i just get a blue screen later on.

So yeh, i use my PC maily for playing CSS(Counter Strike Source) with loads fps and ye PC, like half of the time it's on on 100% usage(lets say about 2-4 hours a day it's on 100%).

Should i do a RAM test for about an hour or something like that? I've just tried to run Prime95 and i can't even run it anymore, i get the "Don't send error" straight after running it.

Few other things to mention, sometimes when i first boot my PC it just like loads up, but the screen doesn't go on, after 2nd time of rr'ing it, it works. Sometimes when i just RR my PC it just shut downs instead of restarting it. I checked my temps aswell they're about 35(prime not on), oh and btw my PC is near the heating thing so sometimes it's a little bit hotter in the room, but i would't get an RAM error if it would be just too hot? PC would shutdown instead?

Oh and my OC settings in BIOS:
1. AI OverclockTuner: Manual
2. Trubo Ratio: By per Core
3. Core Ratio Limit: 45, 45, 45 45
4. Load Line Calibration: Auto
5. VRM Fixed Frequency mode: auto
6. Phase Control: Auto
7. Duty Control: Extrem
8. CPU Voltage: default
Offset mode
Offset mode sign: +
CPU offset Voltage: 0.030

So ye can any1 help me out to get a stable OC for 4.5ghz, which settings should i maybe change up there? And ye how to test it afterwards for the stability.


Thanks
Edited by lukukz - 3/1/11 at 10:17am
post #2 of 5
If it's not stable adjust the CPU voltage. Don't use the default voltage for overclocking. You need to manually adjust the voltage until it is stable. I don't use the offset because it never works right for me.
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post #3 of 5
Thread Starter 
Quote:
Originally Posted by anoob View Post
If it's not stable adjust the CPU voltage. Don't use the default voltage for overclocking. You need to manually adjust the voltage until it is stable. I don't use the offset because it never works right for me.
Hmm, but i was using 1.20v @ 4,2ghz and it worked fine, tested with prime but got the bluescreens later on - but if u use offset and if ur not running anything u get like 0.8V and with with manual voltage it would always run at 1,2v, no matter if ur doing something or not.
post #4 of 5
Quote:
Originally Posted by lukukz View Post
Hmm, but i was using 1.20v @ 4,2ghz and it worked fine, tested with prime but got the bluescreens later on - but if u use offset and if ur not running anything u get like 0.8V and with with manual voltage it would always run at 1,2v, no matter if ur doing something or not.
Unfortunately that is how it works for practically most boards. I believe what you want is something like SVID which only the Gigabyte boards offer.


Quote:
Originally Posted by sin0822
With Sandy Bridge comes new Voltage Regulator spec, Voltage Regulator Down 12(VRD 12) is Intel’s new spec for power delivery design. One major aspect is the addition of SVID.
What is Serial VID?:
With VRD12 comes SVID (Serial Voltage Identification), in the past Intel introduced DVID (Dynamic Voltage Identification), as well as plain old VID (voltage Identification, stock chip voltage). Let me explain these a little bit to you. DVID is dynamic voltage regulation protocol for the processor, when you change frequency of the chip voltage needs to be changed as well, DVID works by setting predetermined voltages depending on the situation, such as in C1E power saving state. DVID is a way to assign voltage values to frequencies and a way for the processor to know what voltage to operate at. In the BIOS you also have the ability to set DVID +/- voltage increments and under load it will bump the voltage up to what you set plus stock VID, so DVID of .250v + VID of 1.2V when your processor is under load Vcore will be 1.45v.
With SVID you add a little kick to the situation; Serial VID is a simple but powerful way to link the processor’s power regulator(PWM) to the motherboard’s power regulator. SVID is a super high speed interface that features VID tables, fault response, and power states. SVID allows the PWM (ISL6366) to “talk†directly to the processor to find the best voltage for different frequencies. What you get is an ultra-smart system that can be fed suggestions, and then it will take the suggestions and make it happen in real time. For instance, multiplier overclocking on unlocked chips is a common occurrence and turbo boost is as well, what if you want to set a multiplier that the system isn’t ready for because the frequency is too high? You proceed to mess around with the right voltage trying to find what is best, and after hours of tinkering and overvolting you end up with a stable system or a fried chip. SVID is a way that you can give the processor info on what you want to do and it will determine the best way to proceed with voltage. It will take a matter of seconds to find the proper voltage for your overclock.
Skylake Is Here!
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CPUMotherboardGraphicsRAM
Intel i7 6700K Batch #L535B021 4.7Ghz @ 1.296V GIGABYTE G1 Gaming GA-Z170X-Gaming 7 EVGA Geforce GTX 970 SSC ACX 2.0+ G.SKILL TridentZ 16GB DDR4 3000 
Hard DriveHard DriveHard DriveCooling
Samsung 950 Pro M.2 512GB  Crucial BX100 250 GB SanDisk SSDPlus 240 GB NZXT Kraken X61  
OSMonitorKeyboardPower
Windows 8.1 & 10 Dell UltraSharp 2913WM 21:9 2560x1080 Ducky Shine 4, CODE WASD, Deck Legend, G710+ EVGA SuperNova G2 850W 
CaseMouseMouse PadAudio
Phanteks Enthoo Evolv ATX Mid-Tower Ducky Secret SteelSeries Fostex Purple Heart TH-X00 
Audio
AKG K553 Pro, Philips SHP9500, Superlux 668B, S... 
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Skylake Is Here!
(17 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 6700K Batch #L535B021 4.7Ghz @ 1.296V GIGABYTE G1 Gaming GA-Z170X-Gaming 7 EVGA Geforce GTX 970 SSC ACX 2.0+ G.SKILL TridentZ 16GB DDR4 3000 
Hard DriveHard DriveHard DriveCooling
Samsung 950 Pro M.2 512GB  Crucial BX100 250 GB SanDisk SSDPlus 240 GB NZXT Kraken X61  
OSMonitorKeyboardPower
Windows 8.1 & 10 Dell UltraSharp 2913WM 21:9 2560x1080 Ducky Shine 4, CODE WASD, Deck Legend, G710+ EVGA SuperNova G2 850W 
CaseMouseMouse PadAudio
Phanteks Enthoo Evolv ATX Mid-Tower Ducky Secret SteelSeries Fostex Purple Heart TH-X00 
Audio
AKG K553 Pro, Philips SHP9500, Superlux 668B, S... 
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post #5 of 5
Quote:
Originally Posted by lukukz View Post
Hmm, but i was using 1.20v @ 4,2ghz and it worked fine, tested with prime but got the bluescreens later on - but if u use offset and if ur not running anything u get like 0.8V and with with manual voltage it would always run at 1,2v, no matter if ur doing something or not.
How long did you stress test and what programs? It sounds like your not giving it enough vcore.

Are you sure you set your RAM to spec in the bios?
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My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500K Gigabyte UD3P EVGA 460 gtx 1gb SC 2x4 GB Corsair Vengance 
Hard DriveOptical DriveCoolingOS
120gb Vertex 3 Max IOPS/40gb Kingston SSD/ 500g... Asus Dvd burner Ultra 120 Extreme Win 7 
MonitorKeyboardPowerCase
Samsung BX2450 Filco Mx Brown Corsair 650TX CM 690 II Advanced 
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G500 Razer Audio Technica M50s 
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