E8400, GA-EP45-UD3R, HyperX 1066: Wanting to get 500MHz FSB stable

[Lsdmeasap]

What is your full settings when you say less than 1.34 Vtt will not boot? Just wondering

At 500+ FSB 1.32-1.36 may be needed, but not always, so I just thought I would check in with you on that. 1.34 is fine though for sure

[pdxer]

What is your full settings when you say less than 1.34 Vtt will not boot? Just wondering

At 500+ FSB 1.32-1.36 may be needed, but not always, so I just thought I would check in with you on that. 1.34 is fine though for sure

Due to the possibility of human error, I will go try again at Vtt 1.34 and work up from there if needed.
Is there anything that should be changed before testing(anything to Auto or something needs to be manually configured)?
Until I see your post, I'll test with these settings.

CAS Latency Time...................5
tRCD ....................................6
tRP'......................................6
tRAS....................................15

tRRD...........................................4
tWTR..........................................4
tWR............................................8
tRFC...........................................56
tRTP...........................................4
Command Rate (CMD) ....................:0

-Channel A/B
Static tRead Value.........................:10

Driving Strength Profiles
Driving Strength A/B............................1066

CPU Vcore….……….........................:1.26875 BIOS & ET6 // CPUID 1.248vcore running.
CPU Termination…..... 1.200V*.......: 1.32 to 1.38 //would not boot with these setting. More details below.
CPU PLL…………………....1.500V*.......: 1.5
CPU Referen.…………....0.755V*.......: Auto
CPU Reference2………,,0.800V*.......:Auto //don't have Ref2

-MCH/ICH
MCH Core…………….....1.100V...........:1.22
MCH Reference….…….0.800V...........; Auto
MCH/DRAM Ref.…......0.900V...........: 1.1 //details in quote below

ICH I/O……………….....1.550V............: 1.55
ICH Core…………...……1.100V............: 1.1

-DRAM
DRAM Voltage ……....1.800V............:.2.2 //manf. recommended voltage
DRAM Termination .…0.900V............: 1.1
Channel A Reference 0.900V............: 1.1
Channel B Reference 0.900V............: 1.1

C2D e8400 3GHz Rev.CO-step 6
2x1Gb HyperX 1066MHz KHX8500D2K2/2GN CL5 2.2v
GA-EP45-UD3R v1.1 F5
eVGA 9600GT 2000MHz
Earthwatts 550w 12v2~25A/25A
-More specs in sig-

All testing done at 1572MB

-MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ...............:Turbo
CPU Clock Ratio ...........................: x6
Fine CPU Clock Ratio.....................:.0
CPU Frequency ...........................: 500*6

-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 [Press Enter]
CPU Clock Drive.......................: 800mV~Auto
PCI Express Clock Drive...............: 900mV~Auto
CPU Clock Skew (ps)...................: 0ps
MCH Clock Skew (ps)...................: 0ps


-DRAM Performance Control
Performance Enhance.................: [STANDARD]
Extreme Memory Profile (X.M.P.).....: Disabled
(G)MCH Frequency Latch..............: [Auto]
System Memory Multiplier ...........: 2.00B 1:1 // will not post at 2.00D
Memory Frequency (Mhz) .............: 1000MHz
DRAM Timing Selectable .............: [Manual]

-Standard Timing Control // based on EPP#1 for 533MHz
CAS Latency Time...................5
tRCD ....................................6
tRP'......................................6
tRAS....................................15

-Advanced Timing Control //Auto timings, not touched
tRRD...........................................4
tWTR..........................................4
tWR............................................8
tRFC...........................................56
tRTP...........................................4
Command Rate (CMD) ....................:0

Driving Strength Profiles
Driving Strength A/B............................1066

-Channel A
Static tRead Value.........................:10 //<-from 9
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...............:Auto ps
Dimm2 Clock Skew Control...............:Auto ps

-Channel B
Static tRead Value.........................:10 //<-from 9
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...............:Auto ps
Dimm2 Clock Skew Control...............:Auto ps

-Motherboard Voltage Control
Voltage Type.………... Manual

CPU Vcore….……….........................:1.26875 //<-- 1.275 gave error in Prime95 during 'blend', "SUMOUT".
Moved up to 1.26875, received no more "SUMOUT" error.

CPU Termination…..... 1.200V*.......:Auto //Machine wont post 1.20 to 1.28. Machine wont boot 1.30 to 1.38.
Machine has booted in 1.4 and 1.42. 1.42 errors during over night Prime95(8 hours).
CPU Termination & Reference set to Auto, machine showed no errors after 8 hours of torture and 3 hours of CS:S.
Have not tested above 1.42.
'ET6' shows 1.6 on Auto[default].

CPU PLL…………………....1.500V*.......: 1.5
CPU Referen.…………....0.755V*.......: Auto //Left on 'auto' while testing
CPU Reference2………,,0.800V*.......:Auto // I have no "Reference2"

-MCH/ICH
MCH Core…………….....1.100V...........:1.22 // 1.22 was my first setting, passed 5 hours of Prime95/blend with vcore 1.26875, CPU Termination & Reference set to Auto.
Fails blend test on Auto.

MCH Reference….…….0.800V...........; Auto
MCH/DRAM Ref.…......0.900V...........: 1.1** // A forum member said these are the voltages I need based off the DRAM voltages(2.2/2).
Testing 5 hours Prime95/blend, CPU Termination & Reference set to Auto, vcore 1.26875, showed no errors.

ICH I/O……………….....1.550V............: 1.55
ICH Core…………...……1.100V............: 1.1

-DRAM
DRAM Voltage ……....1.800V............:.2.2 //manf. recommended voltage
DRAM Termination .…0.900V............: 1.1**
Channel A Reference 0.900V............: 1.1**
Channel B Reference 0.900V............: 1.1**

-Advanced Settings
Limit CPUID Max. to 3.....................: [Disabled]
No-Execute Memory Protect............: [Enabled]
CPU Enhanced Halt (C1E)................: [Disabled]
C2/C2E State Support....................: [Disabled]
x C4/C4E State Support..................: [Disabled]
CPU Thermal Monitor 2(TM2) ...........: [Enabled]
CPU EIST Function.........................: [Disabled]
Virtualization Technology................: [Disabled] Enabled if you use Vmware/Virtual PC

-Integrated Peripherals
Legacy USB Storage Detect ..............[Disabled] *Note* Must be enabled to flash from USB

[pdxer]

1st Attempt - 1.34 Vtt posted, but rebooted. After reboot, asked permission for safe-mode. Selected normal win boot and got BSOD.

Repeated from 1.36 to 1.38, but rebooted trying to start win. Goes back to safe-mode permission, BSOD when starting win normally. Vtt 1.42 does boot win, but failed last nights, all night blend test. Have not tried higher Vtt.

After going from Vtt 1.34 to 1.38 all I got was BSOD booting win, until 1.4. After seeing 'ET6' match my 1.42 & 1.4 Vtt set in BIOS('ET6' states Vtt 1.6 when BIOS set to Auto[default]), I'm beging to think that I need a higher Vtt then 1.42 just to pass Vtt in Prime95 'blend test'. I thought these modules and my FSB controller were made to take the higher voltages need? Than again, that's just speculation!

Have you seen Vtt's higher than 1.4 - 1.42?

It's awesome you guys are taking your time to help people out. It's much appriciated!
Mark-

CAS Latency Time...................5
tRCD ....................................6
tRP'......................................6
tRAS....................................15

tRRD...........................................4
tWTR..........................................4
tWR............................................8
tRFC...........................................56
tRTP...........................................4
Command Rate (CMD) ....................:0

-Channel A/B
Static tRead Value.........................:10

Driving Strength Profiles
Driving Strength A/B............................1066

CPU Vcore….……….........................:1.26875 BIOS & ET6 // CPUID 1.248vcore running.
CPU Termination…..... 1.200V*.......: 1.32 to 1.38 //would not boot with these setting. More details below. 'ET6' reads 1.6 at Auto.
CPU PLL…………………....1.500V*.......: 1.5
CPU Referen.…………....0.755V*.......: Auto
CPU Reference2………,,0.800V*.......:Auto //don't have Ref2

-MCH/ICH
MCH Core…………….....1.100V...........:1.22
MCH Reference….…….0.800V...........; Auto
MCH/DRAM Ref.…......0.900V...........: 1.1 //details in quote below

ICH I/O……………….....1.550V............: 1.55
ICH Core…………...……1.100V............: 1.1

-DRAM
DRAM Voltage ……....1.800V............:.2.2 //manf. recommended voltage
DRAM Termination .…0.900V............: 1.1
Channel A Reference 0.900V............: 1.1
Channel B Reference 0.900V............: 1.1



I'm going to go play CSS, I'll check back for other post. CPU Termination & Reference set to Auto, MCH reference set to Auto. I'll let you know if I c2d!
I've played CSS with the three set to Auto, passed Prime95 blend test for 5 hours and no c2d from CSS. Vtt 1.42 fails blend test and c2d's CSS.

[Lsdmeasap]

Sorry this is short but I just stopped in for a second.

No, you should not need 1.44 Vtt for 500 FSB, maybe 1.36 or 1.38 but above that should not be needed. But then again all CPU's are different so you never know.

What I stopped in to say is you should try adjusting your MCH Ref amount and then try lower Vtt. Try MCH Ref of .70, if not luck try .74 and if no luck there go the other way and try higher then norm .80-84 if you have time. You may need higher then norm is why Vtt seems to be so high for you, so you may want to go that route first.

Auto will ALWAYS overvolts things more then needed when overclocked so that is why you see 1.6. I would also be using 1.58 or so PLL

I know that is alot of tests, but that is they way I would go as that high of a Vtt should not be needed

[profJim]

500 MHz is asking a lot, even if you are running with a 6x cpu multiplier.

Try lowering your cpu host frequency to 490 and see what what Cpu Termination value is reported by EasyTune6.
Then see how low you can set Cpu Termination at this lower cpu speed.

Cpu Termination is almost always less than Cpu Vcore by at least 0.05 - 0.10 volts.

[pdxer]

500 MHz is asking a lot, even if you are running with a 6x cpu multiplier.

Try lowering your cpu host frequency to 490 and see what what Cpu Termination value is reported by EasyTune6.
Then see how low you can set Cpu Termination at this lower cpu speed.

Cpu Termination is almost always less than Cpu Vcore by at least 0.05 - 0.10 volts.

I had 800MHz stable saved in my BIOS, the Vtt in ET6 reads 1.2.
I'll try other frequencies to check the outcome of Vtt via ET6 and post.

Well , my vcore is 1.26875, so I'll try 1.21 & 1.16.

@Lsdmeasap

should I leave MCH/DRAM Ref at Auto until I find the right Vtt?
Which is more important to make stable first?
.CPU Termination
.CPU Reference
.MCH Reference
.MCH/DRAM Reference

EDIT: See if this makes any sense. At 800MHz, Vtt via ET6 is 1.2. At 1000MHz Vtt via ET6 is 1.6. Difference of 200MHz, .4v Vtt difference from 800 to 1000 via ET6. 200/4=50, this would make me think that I would need a Vtt of 1.5v.
I guess i'm having a hard time understanding since anything lower than 1.42 Vtt fails to post/boot or pass testing. This is with all references at Auto, regardless if MCH/DRAM is 1.1 or Auto.!?


EDIT: So I went and tried Vtt at 1.1, 1.20 and 1.24 with all reference clocks on Auto. Machine would not post on all three!

[pdxer]

Ok, I actually got somewhere. I put the Vtt to 1.38 I then made the MCH Ref .70-no post, up to .74 I got no post, but when I set MCH Ref to .75 with Vtt at 1.38. I booted. I guess, now I test. Or should I set the Vtt lower before I test, than go upwards with Vtt if 1.28 fails. Should I think of MCH Ref as 55% of Vtt, because it took 55% of Vtt 1.38 to boot? (1.38*.55=.759)


Lsdmeasap please, lol
Mark-

CPU Vcore….……….........................:1.26875
CPU Termination…..... 1.200V*.......: 1.38
CPU PLL…………………....1.500V*.......: 1.5
CPU Referen.…………....0.755V*.......: Auto

-MCH/ICH
MCH Core…………….....1.100V...........:1.24
MCH Reference….…….0.800V...........; .759
MCH/DRAM Ref.…......0.900V...........: 1.1 //details in quote below

ICH I/O……………….....1.550V............: 1.55
ICH Core…………...……1.100V............: 1.1

-DRAM
DRAM Voltage ……....1.800V............:.2.2 //manf. recommended voltage
DRAM Termination .…0.900V............: 1.1
Channel A Reference 0.900V............: 1.1
Channel B Reference 0.900V............: 1.1

I'm going to go see if i can boot with 1.28/.704 now!

EDIT: So, 1.28/1.750 booted to windows. Should I start testing here and go up, or shold I start high and go down, what do you think is best? Plus I found out that the "55% of" means nothing!

[pdxer]

Maybe 55% does mean something. So I went to Vtt 1.24*.55(%), to find a base to start searching for MCH Ref. Which is .682. closest setting, .685. Booted on the first shot. Than I tried 1.24 Vtt, MCH Ref from .685 to .725, where I stopped because four MCH Ref's had booted, but not yet tested. Now I have a place to start. I can see the issue I was having now, I was not looking for the right MCH Ref to Vtt match, because I didn't know the lowest to highest possible MCH Ref to correspond. I'm just puzzled how I came up with the thought of 55% to find the lowest possible MCH Ref voltage possible.

Fatguy19xx is 1.28/.75 which is only 58%. From there I figured that that would not be the lowest voltage possible, because the lowest voltage is not always the most stable.
I have not tested anything over 1.24/.75.

[profJim]

Forget my 490 MHz test for now, it's confusing enough as is.

[pdxer]

Forget my 490 MHz test for now, it's confusing enough as is.

I'm starting to understand it better, but like I stated, I bought these parts thinking that I'm going to have a 1066 machine.
So that, or at least 1000MHz memory is my first goal. After that, than I'll really start screwing around.

So, after going through 1.22 to 1.28 Vtt, running 5 steps of MCH Ref(.xxxV) each Vtt, I came up with the error "SUMOUT" again.
Once I reached 1.3 Vtt, "SUMOUT" did not appear from MCH Ref .700 to .759.

Assuming 1.3/.759 is alright due to no errors appearing on Prime95 start-up, I'm going to start a blend test and go shopping.
If Prime95 blend test has not failed when I get back home, I'll play some games. If I don't c2d during that time, I'll do an all night blend test with 1.5GB memory.

If I up the vcore, does this mean Vtt can come down?

DOH: Well, SUMOUT error just appeared on worker #2. Should vcore need to go up than? It took almost 15 minutes for that "SUMOUT" error to show.

Any suggestions?

I would have never of go this far without you guys. If I can, I'll send you guys each a 22.oz of one of Oregons finest beerz!

Mark-

CPU Vcore….……….........................:1.26875
CPU Termination…..... 1.200V*.......: 1.3
CPU PLL…………………....1.500V*.......: 1.5
CPU Referen.…………....0.755V*.......: Auto

-MCH/ICH
MCH Core…………….....1.100V...........:1.24
MCH Reference….…….0.800V...........; .759
MCH/DRAM Ref.…......0.900V...........: 1.1 //details in quote below

ICH I/O……………….....1.550V............: 1.55
ICH Core…………...……1.100V............: 1.1

-DRAM
DRAM Voltage ……....1.800V............:.2.2 //manf. recommended voltage
DRAM Termination .…0.900V............: 1.1
Channel A Reference 0.900V............: 1.1
Channel B Reference 0.900V............: 1.1

Now looking for "SUMOUT" error for vcore 1.27, Vtt 1.3, MCH Ref .750(.759)