Gigabyte EP45-UD3P Owners Guide - Page 170 - Overclock.net

isune · 02-13-09

how long they last as in . . . . they will burn out soon? lol

arjo_reich · 02-13-09

Quote:

Originally Posted by isune

how long they last as in . . . . they will burn out soon? lol

I'm not sure which component you're referring to since we were just talking about DRAM reference voltage, but the answer is almost resoundingly --- longer than you'll want to own them, lol.

DRAM Reference Voltage is controlled in the Northbridge and is the voltage that is used to determine a logical on or logical off signal. Below the reference voltage is logical off, above the reference voltage is logical on. For DDR2 the DRAM reference voltage is spec'd out at 50% DRAM Voltage and since the DDR2 spec for voltage is 1.8v the REF voltage is defaulted to 0.9v

If you're running at 2.1v then yes, you need 1.05v (or some approximation) for the REF voltage. Make that change and then post all of your BIOS settings (especially DRAM timings)...

If you don't already have one, search this thread (or google) for a "BIOS TEMPLATE" and wrap it in a {CODE}{/CODE} block. I have a feeling that going to a 6.6.6.18 @T2 with the tRFC being set in the 46-54 range will probably help you but it all comes down to that one magical factor that is never posted... to be honest.

Oh, and see if you can't get a thermal sensor placed on your RAM chips, at 2.1v they're probably running hot as hell. I got my rig stable with the DRAM Voltage at only 1.9v just by loosing up the timings a tweak (8GB though is a different bear altogether)

Acoma_Andy · 02-13-09

Quote:

Originally Posted by isune

how long they last as in . . . . they will burn out soon? lol

Nah

I think I explained wrong, I meant how they long they last in the test

isune · 02-13-09

I can touch my RAM, they feel tiny lil bit warm, i'm going to try to run memtest at 890Mhz this whole night ( more like morning lol) but thx for the fast answer =] ill post back tonight again.

lol yea, the way you put it made it sound scary.

Save · 02-13-09

What's the difference in setting the memory divider to 2.00D instead of 2.00B? BIOS only states D matching 400 FSB, B-266 FSB. Since my FSB is 445MHz right now, should I set it to (2.00)D?

Ghostleader · 02-13-09

@isune

You probably need to tune your MCH core and MCH ref because this board is very sensitive when comes down to MCH core and MCH ref.

If it fails P95 blend it´s probably due to those to.

Start to lower your MCH ref one or two steps, check if it´s getting better, if not go the other way.

Trail and error.

Animanganime · 02-13-09

Can someone please help me to get my q9550 stale on this board
Right now I fail Prime95 within a minute

Here is my template
PCI Express frequency Auto
CIA2 Disable
Performance enhance Standard
System Memory Multiplier 2.00D
Dram Timing Selectable Table Auto 5 5 5 15
LLC off
CPU Vcore 1.35
CPU Termination 1.28V ( default 1.2 )
CPU PLL 1.5 ( default 1.5 )
CPU Reference Auto ( default .76 )

MCH Core 1.44V ( default 1.1 )
MCH Ref .89 ( default .76 )
MCH/Dram Ref Auto ( default .9 )
MCH I/O Auto ( 1.5 Default )
MCH Auto ( 1.1 Default )

Dram Voltage 2.1 ( default 1.8 )

I tried lowering and raising Vcore, MCH Core, MCH ref and CPU VTT and PLL around but still no luck

My CPU Vid is 1.25
and My ram is OCZ 1066

Thanks guys

arjo_reich · 02-13-09

Quote:

Originally Posted by Animanganime

Can someone please help me to get my q9550 stale on this board
Right now I fail Prime95 within a minute

Damnit, I just replied to this and my post must not have "taken" or I only hit preview and then closed the window (i'm kinda famous for that) and it was a lot of typing too...

Try tweaking your DRAM voltages and REF voltages and loosening up your timings. Especially your tRFC which influences the amount of cycles to refresh a row and is fairly important and often a little too tight (for 2048MB DIMMs) when left on AUTO.

Code:

*********** DRAM Performance Control *********** 
Performance Enhance...................: [Standard]
Extreme Memory Profile (X.M.P.).......: [Profile1]
(G)MCH Frequency Latch................: {tweak to get 1066 below}
System Memory Multiplier .....(SPD)...: [2.00D]
Memory Frequency (Mhz) ........1066...: 1066
DRAM Timing Selectable .......(SPD)...: [Manual]

>>>>>> Standard Timing Control
CAS Latency Time..................5...: [ 6]
tRCD .............................5...: [ 6]
tRP...............................5...: [ 6]
tRAS.............................15...: [18]

>>>>>> Advanced Timing Control........: [Press Enter]
tRRD..............................3...: [Auto]
tWTR..............................3...: [Auto]
tWR...............................6...: [Auto]
tRFC.............................46...: [54]
tRTP..............................3...: [Auto]
Command Rate (CMD) ...............0...: [Auto]

>>>>>> Channel A Timing Settings......: [Press Enter]
Static tRead Value....................: [Auto]
tRD Phase0 Adjustment.................: [Auto]
tRD Phase1 Adjustment.................: [Auto]
tRD Phase2 Adjustment ................: [Auto]
tRD Phase3 Adjustment.................: [Auto]
Trd2rd(Different Rank)................: [Auto]
Twr2wr(Different Rank)................: [Auto]
Twr2rd(Different Rank)................: [Auto]
Trd2wr(Same/Diff Rank)................: [Auto]
Dimm1 Clock Skew Control (ps).........: [Auto]
Dimm2 Clock Skew Control (ps).........: [Auto]
DDR Write Training....................: [Auto]

>>>>>> Channel A Driving Settings.....: [Press Enter]
Driving Strength Profile..............: [1066Mhz]
Data Driving Pull-Up Level............: [Auto]
Cmd Driving Pull-Up level.............: [Auto]
Ctrl Driving Pull-Up Level............: [Auto]
Clk Driving Pull-Up Level.............: [Auto]
Data Driving Pull-Down Level..........: [Auto]
Cmd Driving Pull-Down level...........: [Auto]
Ctrl Driving Pull-Down Level..........: [Auto]
Clk Driving Pull-Down Level...........: [Auto]

>>>>>> Channel B Timing Settings......: [Press Enter]
Static tRead Value....................: [Auto]
tRD Phase0 Adjustment.................: [Auto]
tRD Phase1 Adjustment.................: [Auto]
tRD Phase2 Adjustment ................: [Auto]
tRD Phase3 Adjustment.................: [Auto]
Trd2rd(Different Rank)................: [Auto]
Twr2wr(Different Rank)................: [Auto]
Twr2rd(Different Rank)................: [Auto]
Trd2wr(Same/Diff Rank)................: [Auto]
Dimm1 Clock Skew Control (ps).........: [Auto]
Dimm2 Clock Skew Control (ps).........: [Auto]
DDR Write Training....................: [Auto]

>>>>>> Channel B Driving Settings.....: [Press Enter]
Driving Strength Profile..............: [1066Mhz]
Data Driving Pull-Up Level............: [Auto]
Cmd Driving Pull-Up level.............: [Auto]
Ctrl Driving Pull-Up Level............: [Auto]
Clk Driving Pull-Up Level.............: [Auto]
Data Driving Pull-Down Level..........: [Auto]
Cmd Driving Pull-Down level...........: [Auto]
Ctrl Driving Pull-Down Level..........: [Auto]
Clk Driving Pull-Down Level...........: [Auto]

********* Motherboard Voltage Control *********
Voltage Types...........Normal..........Current
-----------------------------------------------
>>>>>> CPU
Load-Line Calibration.................: [Disabled]
CPU Vcore..............1.25000v.......: [1.350v]
CPU Termination........1.200v.........: [1.280v]
CPU PLL................1.500v.........: [1.500v]
CPU Reference..........0.760v.........: [0.853v] {or whatever is closest, but higher}
>>>>>> MCH/ICH
MCH Core...............1.100v.........: [1.440v]
MCH Reference..........0.760v.........: [0.890v]
MCH/DRAM Ref...........0.900v.........: [1.100v]
ICH I/O................1.500v.........: [1.500v]
ICH Core...............1.100v.........: [1.100v]

>>>>>> DRAM
DRAM Voltage...........1.800v.........: [2.000v]
DRAM Termination.......0.900v.........: [1.100v]
Channel A Reference....0.900v.........: [1.100v]
Channel B Reference....0.900v.........: [1.100v]

....like I said, this is only to loosen up your DRAM timings a little because it sounds like that is what is causing you your problems but if these don't work, head on over to OCZ's support forums, they have an awesome support team that will help you tweak your OC for their RAM and will have loads of better info on setting up your MCH voltages and REF voltages. They're the one's who help me get rock solid stable at only 1.9v with my 4x2048MB DIMMs

www.ocztechnologyforum.com

also, I've attached a blank BIOS template for you to use for future debugging. Fill it out completely and then wrap it in {CODE}{/CODE} blocks for future posts... it really helps a lot.

Ghostleader · 02-13-09

Here´s my Q9650@500 4,0GHz and 4x2 OCZ Reaper PC8500@1000 555 15 tRD10.

It´s stable with 30 loop LinX (~3hrs, max problem size and max memory use).

Some may do think that my vcore is way to high for 4,0GHz but those of you that use to run LinX with max problem size and max memory use knows that you need it, when I run P95 small FFT I´m stable with ~0,10v less and temp are ~20C lower.

It not only stress the CPU, the NB gets it share to, it come close to 50C when max stress it with original heatsink/heatpipe (TIM replaced), MCH core@1,34v.

I was surprise that I not had to increase any voltage going from 2x2 to 4x2.

Next up is P95 blend, probably I have to run four instances to stress that amount of ram.

Code:

Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ...............: Auto 
CPU Clock Ratio .......................: 8
CPU Frequency .........................: 4.0GHz (500X8)

Clock Chip Control 

Standard Clock Control

CPU Host Clock Control.................: [Enabled] 
CPU Host Frequency (Mhz) ..............: 500 
PCI Express Frequency (Mhz) ...........: 100 
C.I.A.2 ...............................: [Disabled] 

Advanced Clock Control

CPU Clock Drive........................: Default
PCI Express Clock Drive................: Default
CPU Clock Skew (ps)....................: 0ps 
MCH Clock Skew (ps)....................: 50ps 

DRAM Performance Control

Performance Enhance....................: Turbo
Extreme Memory Profile (X.M.P.)........: Disabled 
(G)MCH Frequency Latch.................: 400MHz 
System Memory Multiplier ..............: 2.00D 
Memory Frequency (Mhz) ................: 1000MHz

Standard Timing Control

CAS Latency Time.......................: 5 
tRCD ..................................: 5 
tRP'...................................: 5 
tRAS...................................: 15 

Advanced Timing Control

Everything In Advanced Timing Control on auto.  

Motherboard Voltage Control

CPU

Load-Line Calibration..................: [Enabled] 
CPU Vcore..............................: 1.3875
CPU Termination........................: 1.30
CPU PLL................................: 1.57
CPU Reference..........................: 0.760 (ET6) 

MCH/ICH

MCH Core...............................: 1.34
Reference..............................: 0.840 (ET6) one step up or down, LinX error within 5min
MCH/DRAM Ref...........................: Normal
ICH I/O................................: Normal
ICH Core...............................: Normal 

DRAM
DRAM Voltage...........................: 2.10
DRAM Termination ......................: Normal 
Channel A Reference....................: Normal
Channel B Reference ...................: Normal

decapitator · 02-13-09

need help setting the the mch and detailed cpu volts to get 3.4 stable. what should i leave at auto and what should i raise?

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Gigabyte EP45-UD3P Owners Guide

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