plumerya
join:2004-08-20
Montreal, QC
2 edits |  [Unstable] e8400 @ 3ghz , Vcore a 1.35
1.35 is that too much Voltage just to run at 3ghz?
it wouldnt run at stock V. which was 1.25 by default in bios settings |
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Ray422
Premium
join:2002-03-04
Adger, AL
clubs:  | It's ok up to 1.3625volts, however...
I would try to determine why it's not stable at "stock"?
What are your temps? |
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plumerya
join:2004-08-20
Montreal, QC
1 edit | 40c when idling.
but this does not leave me much room to overclock :| |
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CCat
Purrplexity
Premium
join:2005-12-06
Wonderland
1 edit | reply to plumerya
I had mine running 4GHz with 1.325v Idle at low 30's high 20's.
Somethings wrong somewhere. |
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plumerya
join:2004-08-20
Montreal, QC | I think too. must be a really bad cpu , what do you think? |
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CCat
Purrplexity
Premium
join:2005-12-06
Wonderland
 ·RoadRunner Cable
·WOW Internet and C..
1 edit | reply to plumerya
I know enough to troubleshoot my system (most of the time), but I don't know enough to give anyone advice on their systems.
The one thing I do know, you have to get it running stable at stock settings before you attempt any OC'ing.
Hope you get your issue resolved.
Edit:Sp
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signmeuptoo
Folding and Crunching Not just Breakfast
Premium
join:2001-11-22
LOSTinSpace
clubs:
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| reply to plumerya
There ARE CPUs that don't overclock with stability. I had an AMD a few years back that was a "bad one out of the batch". But first, like they say, you have to go through all your settings. I don't know anything about Intel systems right now, so I wish I could, but I cannot, help much.
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idlewillkill
Go Blue
Premium
join:2005-09-28
North York, ON | The CPU should certainly be able to run at stock voltage stably. Have you ruled out other components of your system as culprits?
Have you done any overclocking with your RAM, or video card? |
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plumerya
join:2004-08-20
Montreal, QC
·TekSavvy Solutions..
3 edits | Well for some reason mine is unable to run at stock voltage.
I could run a memory test with Ultimabe boot cd
if i try a cpu burnin test.. it would crash and reboot even before unzipping the files and executing it.
Well its a brand new machine with only a cheap video card and 4gig ram.
I dont even know how to OC.
I was just trying to plug everything in and install windows without OCing, but it would crash after clicking on the first NEXT button.
i tried running at 8.5 x333mhz although my default speed should be 3ghz not 2.8ghz.. but it failed..
Was trying to load the computer with the default settings.
I tried it with one ram, then the other one, then different sockets and also moved my video card to another socket.
all failed.
then trying to change the voltage of my Ram to 2.0~2.1 as specified by the manufacturer. total failure.
Oh ya i even changed my SATA cable and tried to plug it in Sata-0 / 1 / 2 / 3 and gave up.
then next step was to increment the Vcore until i reach 1.35 which by then i was able to click on next and proceed with the installation of windows..
took me about 16 hours without sleep to install windows.. was not a pleasant experience. |
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plumerya
join:2004-08-20
Montreal, QC
·TekSavvy Solutions..
| reply to plumerya
Here was my setting in case you have any questions.
MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ...............:auto
CPU Clock Ratio ..........................: 8
Fine CPU Clock Ratio.....................:.+0.5
CPU Frequency ...........................: 2.83 (333x8.5)
Clock Chip Control
Standard Clock Control
CPU Host Clock Control..................: [Disabled]
CPU Host Frequency (Mhz) ............: 333Mhz
PCI Express Frequency (Mhz) .........:auto
C.I.A.2 .................................:[Disabled]
Advanced Clock Control [Press Enter]
CPU Clock Drive...........................: 700mv
PCI Express Clock Drive.................: 700mv
CPU Clock Skew (ps)....................: ops
MCH Clock Skew (ps)...................: 0ps
DRAM Performance Control
Performance Enhance...................: Turbo
Extreme Memory Profile (X.M.P.).....: [Auto]
(G)MCH Frequency Latch...............: [Auto]
System Memory Multiplier ..............: [Auto]
Memory Frequency (Mhz) ..............: 800 800
DRAM Timing Selectable ................: [Auto]
Standard Timing Control
CAS Latency Time........................5
tRCD .........................................4
tRP'...........................................4
tRAS..........................................12
Advanced Timing Control
tRRD...........................................3
tWTR..........................................3
tWR............................................10
tRFC...........................................52
tRTP...........................................3
Command Rate (CMD) ....................:0
Channel A
Static tRead Value.........................:7
tRD Phase0 Adjustment...................:0
tRD Phase1 Adjustment...................:0
tRD Phase2 Adjustment .................:0
tRD Phase3 Adjustment..................:0
Trd2rd(Different Rank)....................:6
Twr2wr(Different Rank)...................:6
Twr2rd(Different Rank)...................:5
Trd2wr(Same/Diff Rank)..................:0
Dimm1 Clock Skew Control...............:Auto
Dimm2 Clock Skew Control...............:Auto
Channel B
Static tRead Value.........................:7
tRD Phase0 Adjustment...................:0
tRD Phase1 Adjustment...................:0
tRD Phase2 Adjustment .................:0
tRD Phase3 Adjustment..................:0
Trd2rd(Different Rank)....................:6
Twr2wr(Different Rank)...................:6
Twr2rd(Different Rank)...................:5
Trd2wr(Same/Diff Rank)..................:0
Dimm1 Clock Skew Control...............:Auto
Dimm2 Clock Skew Control...............:Auto
Motherboard Voltage Control
Voltage Type.………... Manual
CPU
CPU Vcore….……….........................:1.25V
CPU Termination…..... 1.200V*.......: Auto
CPU PLL…………………....1.500V*.......: Auto
CPU Referen.…………....0.760V*.......: Auto
MCH/ICH
MCH Core…………….....1.100V...........: Auto
MCH Reference….…….0.760V...........; Auto
MCH/DRAM Ref.…......0.900V...........: Auto
ICH I/O……………….....1.500V............: Auto
ICH Core…………...……1.100V............: Auto
DRAM
DRAM Voltage ……....1.800V............: Auto
DRAM Termination .…0.900V............: Auto
Channel A Reference 0.900V............: Auto
Channel B Reference 0.900V............: Auto
Advanced Settings
CPU Thermal Monitor 2(TM2) ...........: [Enabled]
CPU EIST Function.........................: [Disabled]
Virtualization Technology................: [Disabled]
Integrated Peripherals
Legacy USB Storage Detect ..............[Disabled] |
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Ray422
Premium
join:2002-03-04
Adger, AL
clubs:
·RoadRunner Cable
2 edits | That's really a strange problem. I know it happens, but it's pretty rare for a chip to be bad.
Just a buncha food for thought....
-Whose mobo? What controls vdroop? How much vdroop? Can you load it? Vdroop after load? Although you are setting the voltage high, I'm just wondering what actually delivers to the chip? Whose ps? size?
Whose ram? What type? speed? Says bios speed is 800=ok. Turn turbo off on ram and loosen timings to 5-5-5-15?
EDIT: I don't understand how you can fine tune the clock ratio if CPU host clock control is disabled. Probably should set bios to load optimized defaults (except cpu volts) until you get through trouble shooting.
If you can troubleshoot that chip in another mobo, (Intel will ask) they "WILL" replace it.
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Things I like - Team Discovery - Quads©3.3 to 4.0ghz - Strawberry Ice cream
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plumerya
join:2004-08-20
Montreal, QC
·TekSavvy Solutions..
| CORSAIR CMPSU-750TX
»www.newegg.com/Product/Product.a···17139006
G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1000 (PC2 8000) Dual Channel Kit Desktop Memory
»www.newegg.com/product/product.a···20231145
GIGABYTE GA-EP45-UD3P LGA 775 Intel P45 ATX Intel Motherboard
»www.newegg.com/Product/Product.a···13128358
Intel Core 2 Duo E8400 Wolfdale 3.0GHz 6MB L2 Cache LGA 775 65W Dual-Core Processor
»www.newegg.com/Product/Product.a···19115037
I know nothing about Vdroop first time I've ever heard of it. i don't know much about OCing, still in the process of learning.
My last computer was way back in 2000
all i did was to install everything and turn on the computer and install windows, voila everything working fine.
I thought that all i needed was to do the same thing like in the old time and plug everything in and just run windows installation disc and it should be good to go, but that is not the case.
I did try to set my RAM to 5-5-5-15 at 1.8v then 2.0 then 2.1, no luck, computer would reboot as soon as it tries to load something.
As for turbo , i did try to set it to standard , no luck.
load optimized defaults , failed too..
I dont have another mobo to try it on 
If you're curious about my Bios
Feel free to check this site , its a little simulation 
»www.jzelectronic.de/jz2/html/bio···ud3p.php |
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Ray422
Premium
join:2002-03-04
Adger, AL
clubs:
·RoadRunner Cable
4 edits | Those are quality parts, let's start from scratch.
Download cpuz, install to desktop, you will use a lot.
»download.cnet.com/CPU-Z/3000-208···423.html
Turn off your pc and unplug power supply. Press on switch to discharge capacitors, then press off. Touch case and power supply. Remove battery for 2 minutes. Don't scuff around on the carpet. Replace battery. Plug power supply back. Turn system on.
I still want you to click optimized defaults. Then leave everything as is, except lets work on that vcore and ram.
Hey,hey, I own almost that same mobo for one of my quads.
Go to mobo intelligent tweaker. Try cpu-v at 1.2875volts, enable load line calibration (just above cpu-v). Set your ram at 2.0 volts, so we don't gamble on ram-spd-auto.
Will it boot to windows?
If so open cpuz, what is the drooped voltage?
Don't be alarmed about a low multiplier/frequency. We will fix later.
If not, leave LLC enabled, ease volts up some until you can boot to windows.
Tell us volts, then Post us a screenie of the voltage drooped.
We have lots more info now. Surely some of us can help
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Things I like - Team Discovery - Quads©3.3 to 4.0ghz - Strawberry Ice cream
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plumerya
join:2004-08-20
Montreal, QC
1 edit | Ok i will go and do it now |
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plumerya
join:2004-08-20
Montreal, QC | Ok it failed
I dont know how to take a screenshot of my bios setting...
Ok i'll go and crank up the Vcore
brb |
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plumerya
join:2004-08-20
Montreal, QC
·TekSavvy Solutions..
| reply to plumerya
So far stable setting, i am now able to run Defrag tool without rebooting.
Just cranking up the Vcore
 |
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Ray422
Premium
join:2002-03-04
Adger, AL
clubs: | Ok it's getting 1.328volts.
What did you set vcore at in bios? |
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plumerya
join:2004-08-20
Montreal, QC | exactly 1.35 because lower would cause a reboot of the system. |
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Ray422
Premium
join:2002-03-04
Adger, AL
clubs:
·RoadRunner Cable
| Ok, these were my thoughts...
Either that cpu is not getting the voltage or the cpu requires too much voltage (meaning bad).
Your vcore of 1.35v is delivering 1.328v according to cpuz. Not too much droop. This eliminates the PS and mobo in my mind, because you are delivering the voltage.
I have an EP45-UD3R, same as yours without extra sli slot.
Notice this comparison of vcore for a 95watt quad overclocked to 4.0ghz versus your 65watt dual with almost the same components. My voltage is very much less.
Your required voltage is very much too high. I honestly do believe you have a bad cpu.
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Things I like - Team Discovery - Quads©3.3 to 4.0ghz - Strawberry Ice cream
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plumerya
join:2004-08-20
Montreal, QC | Somehow i am so happy about it, now i know its the cpu :| |
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