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Sandy Overclocking Problem

post #1 of 10
Thread Starter 
Hey guys, I thought i would turn to the community in an attempt to solve a problem I have had for weeks now. I am trying to stabilize a 4.8 overclock, and well, its not going so well.:

Ill try to give you my settings first:
Quote:
PLL:Enabled

LLC:Ultra High

VRAM FREQ: Manual 350

Phase and Duty: Extreme

CPU Current Capacity: 140%

Vcore: Ive tried ranges from 1.415-1.450, this increases under load because of the LCC, but these were BIOS numbers

VCCIO: Ive tried ranges from 1.05-1.15

PLL: Ive tried low range @ 1.48750v and high range @ 1.7v

CPU Spread Spectrum: Enabled

EIST and C1: Enabled

C3/C6: Auto
Now for the problem(s)

1. When my Prime95 fails, it does not result in a literal BSOD, instead my computer just shuts off, and restarts. How do I tell what the error code was, or what caused the failure.

2. When I do stress test under those settings on Prime95 Blend, I fail within 30 seconds or so.

Any Help would be appreciated, I will read and respond in the morning after class, Thanks all.
post #2 of 10
try these settings and work down from there:

PLL:Enabled

LLC:Ultra High

VRAM FREQ: Manual 500

Phase and Duty: Extreme

CPU Current Capacity: 140%

Vcore: 1.475v

VCCIO: 1.2v

VCSSA: 1.2v

PLL: 1.9v

CPU Spread Spectrum: Disabled

EIST and C1: Enabled

C3/C6: disabled

and set your ram to default settings just in case its the culprit
post #3 of 10
Thread Starter 
are these all max settings?
post #4 of 10
Thread Starter 
anyone else want to weigh in on this?
post #5 of 10
my 5.0 settings:
internal pll=enabled
cpu pll=1.83-ish
pll overvoltage..enabled..
pll overvoltage amount....005 to .012
vccsa 1.04375
vccio 1.2
llc ultra high
phase control extreme
vrm frequency..manual=370
pch=auto
cpu spread=enaBLE

max vcore=1.52
maxcoretemp=72c

..whichever comes first
Edited by Schmuckley - 10/18/11 at 3:24pm
 
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post #6 of 10
Apologies for the late respone, I'll try my best to help out.

Quote:
1. When my Prime95 fails, it does not result in a literal BSOD, instead my computer just shuts off, and restarts. How do I tell what the error code was, or what caused the failure.

2. When I do stress test under those settings on Prime95 Blend, I fail within 30 seconds or so.
1. Never really heard of the rig shutting down completely and restarting due to prime95. Have you tested your PSU with a multimeter?

2. What bsod do you get when you fail prime?

Have you done all the troubleshooting first? Tested RAM with memtest? Check HDD for error's?

Just to add some chip's can do more than 4.5/4.6ghz while other's cannot. I have sen many overclock's that failed to go higher than 4.5ghz. It's all about the luck, unfortunatly there is no guarented speed when it comes to overclocking even after you increase vcore passed a substantial amount it won't go any higher. Just a thought
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post #7 of 10
Thread Starter 
Quote:
Never really heard of the rig shutting down completely and restarting due to prime95. Have you tested your PSU with a multimeter?
I havn't tested the PSU, but i just bought this one, replacing an old Kingwin Lazer 1000w that did the exact same thing when stress testing. I would be very surprised if it was the PSU.

Unfortunately, I dont know what my BSOD code was, is there a good way to check it in windows after it happens?

Quote:
Have you done all the troubleshooting first? Tested RAM with memtest? Check HDD for error's?
Ill try and run a MemTest right now, see if that might be the culprit. Could that possibly be why im getting 30 second crashes on 1344 when running with (FTT in-place)? When i dont run in-place I can go for about 15-20 mins.

What is the best way to check for HDD errors? I have a OCZ Agility 2 SSD as my boot, and a standard hard disk as my storage. Could even an error on the HDD be giving me issues? I just recently reloaded windows, clean install.
post #8 of 10
Thats an insane amount of voltage to feed a 32nm cpu 24/7 and well past Intel's max recommended VID.

How about working your way up slowly instead of throwing some **** on the wall to see what sticks? What do you need for a 47x multi? What about 46?

Quote:
Originally Posted by Khalam View Post
try these settings and work down from there:

PLL:Enabled

LLC:Ultra High

VRAM FREQ: Manual 500

Phase and Duty: Extreme

CPU Current Capacity: 140%

Vcore: 1.475v

VCCIO: 1.2v

VCSSA: 1.2v

PLL: 1.9v

CPU Spread Spectrum: Disabled

EIST and C1: Enabled

C3/C6: disabled

and set your ram to default settings just in case its the culprit
Why would you need that much VCCIO and VCSSA? Do you even know what they do? That VCCSA is well past Intel's recommended max if I'm not mistaken and that is a setting that you can leave at stock, its not going to help with overclocking, at least on air or water.

You don't need that much VCCIO, its not like you're overclocking the base clock. With this multiplyer type overclocking you really don't need much vtt (VCCIO).

You shouldn't need to touch PLL either, not until you start with extreme clocks.
Edited by BababooeyHTJ - 10/18/11 at 5:23pm
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post #9 of 10
Quote:
Originally Posted by BababooeyHTJ View Post
Thats an insane amount of voltage to feed a 32nm cpu 24/7 and well past Intel's max recommended VID.

How about working your way up slowly instead of throwing some **** on the wall to see what sticks? What do you need for a 47x multi? What about 46?
Intels max recommended VID for the i5 2500k is 1.52vcore if i'm not mistaken.
 
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post #10 of 10
Quote:
Originally Posted by Shiftstealth View Post
Intels max recommended VID for the i5 2500k is 1.52vcore if i'm not mistaken.
Thats the max VID and not vcore, big difference. Once you factor in vdroop that 1.52 is actually like feeding the cpu 1.4v with loadline.
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