I know what is wrong with my system and my story lol..

Geekazoid

Geekazoid

Geekazoid

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19 Jun 2009
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ok its starts with me buying a pre overclocked bundle from OCUK see my specs... well when i recieved this bundle and tested for stability using Intel Burn Test and was shocked to see that it failed in the second pass...

OCUK overclock settings were

BLCK 200
QPI Link Speed (AUTO) X36 (at 7.2ghz)
Memory at 8X 1600mhz
(memory timings 9-9-9-28 Command Rate (CMD) 2...)
Unicore Frequency (AUTO) (3.8ghz)
Vcore Voltage 1.3000Volts
QPI/VTT (AUTO)
DRAM Voltage at 1.64V

so being farmiliar with overclocking (not near as good as some people on here)... i thought it might be becasaue OCUK have set most of the setting to auto so i changed them to see if i can do better....

attempt 1

BLCK 200
QPI Link Speed X36 (at 7.2ghz)
Memory at 8X 1600mhz
(memory timings 8-8-8-24 as stated with the memory i got, CMD 1)
Uncore Frequency 16X at 3200mhz
Vcore Voltage 1.3000Volts
QPI/VTT 1.33volts
DRAM Voltage 1.64 Volts

UNSTABLE in Intel Burn Test failed within first 2 passes (BSOD and random restarts)

(BOLD THE OPTIONS I CHANGED)

Attempt 2

BLCK 200
QPI Link Speed X36 (at 7.2ghz)
Memory at 8X 1600mhz
(memory timings 8-8-8-24 as stated with the memory i got, CMD 1)
Uncore Frequency 16X at 3200mhz
Vcore Voltage 1.3000Volts
QPI/VTT 1.33volts
DRAM Voltage 1.66 Volts

UNSTABLE in Intel Burn Test

Attempt 3

BLCK 200
QPI Link Speed X36 (at 7.2ghz)
Memory at 8X 1600mhz
(memory timings 9-9-9-28, CMD 2)
Uncore Frequency 16X at 3200mhz
Vcore Voltage 1.3000Volts
QPI/VTT 1.33volts
DRAM Voltage 1.66 Volts

UNSTABLE in Intel Burn Test

Attempt 4

BLCK 200
QPI Link Speed X36 (at 7.2ghz)
Memory at 8X 1600mhz
(memory timings 8-8-8-24, CMD 2)
Uncore Frequency AUTO
Vcore Voltage 1.3000Volts
QPI/VTT 1.33volts
DRAM Voltage 1.66 Volts

UNSTABLE in Intel Burn Test

Attempt 5

QPI Link Speed X36 (at 7.2ghz)
Memory at 8X 1600mhz
(memory timings 8-8-8-24 as stated with the memory i got, CMD 2)
Uncore Frequency (Auto)
Vcore Voltage 1.3000Volts
QPI/VTT (Auto)
DRAM Voltage 1.66 Volts

UNSTABLE in Intel Burn Test

Attept 6 (my ONLY stable settings)

so i started to ponder that the problem might be with the memory... so i attempted these settings

BLCK 200
QPI Link Speed X36 (7.2ghz)
Memory 6X 1200mhz
(memory timings 9-9-9-28 CMD 2)
Uncore Frequency X13 2.6ghz
Vcore 1.3000volts
QPI/VTT 1.33 Volts
DRAM voltage AUTO

lo and behold everything running stable however if i move the memory up to 1600mhz with any of the above settings (apart from attempt 6) it becomes unstable... i can say after all this testing and pulling out several handfulls of hair that the memory is unstable because attept 6 shows no different settings for the cpu only diff is that memory is downclocked... guarantee the memory is faulty or els i shoot my self in the knee caps....

any suggestions info help or anything im missing doing wrong would be a appreciated.... thankyou

if the memory is faulty what do i do??? RMA it back to OCUK??? also would i need to only send my memory or the whole mobo and CPU???? im sure its deffo memory...
 
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Doesnt this memory have a 1600mhz XMS profile that requires AT LEAST 1.65v for stability?

Have you tried setting the memory speed to XMS profile and upping the voltage slightly?
 
I've been told not to go over 1.65v due to the risk of breaking the memory controller / cpu.
 
Hmm might have to bear that in mind when my D0 stepping arrives.. Couldnt get mine stable until it got to 1.72v BIOS setting

Currently running an Older i7 920 at 3.36 21x160

CPU is 1.328v
Dram is 1.712v
QPI/Vtt is 1.36v
Memory is 1600mhz Corsair

That data is all from ET6 HW monitor

Running Prime hard or intel burn test 16x its 100% stable and maxes at 64 degrees c.

What I read said Dram and QPI/Vtt must be within 0.5v of each other, Can anyone confirm?
 
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Yah thats correct so your fine. Scary ram voltage though. :(


I tested running the XMS profile and the system wouldn't boot at all. Im only at 1.23v but my noctua just cant take any higher temps so ima just keep fine tuning till i crack it or my case is done.
 
I thought that although the boards support it, 1600 on the RAM is considered to be overclocking?*

There's not that much benefit in running it at that speed anyway and it stresses the controller, isn't running it at 1333 or so with tighter timings better?

* (i.e. out of spec)
 
Doesnt this memory have a 1600mhz XMS profile that requires AT LEAST 1.65v for stability?

Have you tried setting the memory speed to XMS profile and upping the voltage slightly?
Click to expand...

XMS profile???? i cant see an XMS setting anywhere in the bios???

update: - i upped the ram to 1600mhz on 9-9-9-28 CMD 2 with DRAM volts at 1.64V
ran Memtest86 and it passed 3 times no errors so i pressed escape and loaded into windows however in windows i noticed that the security centre icon didnt pop up in the right hand side bottom task bar (you know to tell me that automatic updates is not activated etc) normally it poppes up after a min or 2.... so i restared my machine and it locked up in the restart process or boot process and i got this error in the BSOD

Technical Information :

***STOP: 0X0000003B (0X00000000C0000005, 0XFFFFF800021E2683, 0XFFFFFA600C1E9CB0, 0X0000000000000000)

no matter what i try i cant get my RAM to run at 1600mhz in my 4ghz overclock even the OCUK set overclock fails im starting to loose it now driving me up the wall.... :*(
 
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1.67 1.68v aint that too hight i dont wanna distroy my memory controllers i ramp up VVT see what happens....


any idea in the error code as i think that is where the key to the solution lies...
 
Geekazoid said:
XMS profile???? i cant see an XMS setting anywhere in the bios???
:*(
Click to expand...

MIT Page

Extreme Memory Profile (XMP) not XMS (my bad)

IMG_0915.jpg
 
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Well, I get same BSOD if I use 200BCLK, I think it is a limitation with some chips or maybe it need too much voltage. Try 191x21, your ram will run @ 1528MHz, CPU @4GHz. this works for me
 
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thanks peeps

i will try X21 by BLCK 191 boldenc suggested... untill then im running stable at 1200mhz (8-8-8-24) at 1.50V and CPU VCORE at 1.265Volts...

1200mhz DDR and 1600mhz are there any noticeable performace differences in realtime applications between the two... e.g. games or is it only visiable under benchmarks?

also at lower mhz can i tighten up the memory timings more was thinking of running 7-7-7-21

[edit] drwho thanks for that pic mate
 
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UD5's on XS are going well over 200 BLCK no problem. With a PCI-E hard mod there hitting nearly 240 BLCK. Are you trying to get 4.2Ghz or just 4ghz?
 
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