**Official DFI LanParty UT X48-T2R(and LT) Discussion

[adya]

ok ive finally got 4x1gb stable at 475fsb/1140mhz /3.8ghz. occt stable for 2hrs.
i had it stable at 500fsb on a 1:1 ratio but it was too hot .it needed way to much juice . but honestly ,i didnt notice a difference between 475 and 500. really , there wouldnt be much difference in performance imo.but theres a difference in the amount of volts needed.
im sure with quads u could easily acheive this with much less volts and more tweaking, but with this c2 it really needs volts i think.
one thing i noticed is that with the same settings and output ,and fine delay set to a certain group of numbers was stable . then later the same settings and output was also stable but with different fine delay figures? ive been taking notes . so its not a mistake, the numbers vary quite abit .id luv to know what the variable is. and how both sets of figures equate stability?

[Rinaun]

ok ive finally got 4x1gb stable at 475fsb/1140mhz /3.8ghz. occt stable for 2hrs.
i had it stable at 500fsb on a 1:1 ratio but it was too hot .it needed way to much juice . but honestly ,i didnt notice a difference between 475 and 500. really , there wouldnt be much difference in performance imo.but theres a difference in the amount of volts needed.
im sure with quads u could easily acheive this with much less volts and more tweaking, but with this c2 it really needs volts i think.
one thing i noticed is that with the same settings and output ,and fine delay set to a certain group of numbers was stable . then later the same settings and output was also stable but with different fine delay figures? ive been taking notes . so its not a mistake, the numbers vary quite abit .id luv to know what the variable is. and how both sets of figures equate stability?

Mind posting BIOS?
When I'm not about to pass out, like tomorrow, I'l post my 3.78Ghz stable settings

[adya]

Mind posting BIOS?
When I'm not about to pass out, like tomorrow, I'l post my 3.78Ghz stable settings

that means taking a pic of my bios with my camera that i havnt seen in months ,and i know it has no batteries ,so ill have to go buy some of those to.
its alot of work, but i guess i can manage it

[Slam]

I appreciate the dual core folks...but bring on the quad overclocks!

[KanGaXx]

omg 1,43 VTT and 1,50 VNB u fool adya ^_*

try boot 520 pls and tell me if u can do that

[adya]

omg 1,43 VTT and 1,50 VNB u fool adya ^_*

try boot 520 pls and tell me if u can do that

yep , its alot but trust me , any less vnb ,vcore ,vtt = no occt stable. ive tried for weeks now this is the only way to have it stable.
i already had it at 500fsb ,it took xtra nb and vcore to get there though , i wouldnt dare go to 520, thats crazy talk.
if u want over 500 i think u need to go quad, or maybe its just my x6800 ,could be getting old lol . temp is around 40c idle which isnt bad . im in australia remember ,its hot here . so 40c is pretty good.

[KanGaXx]

eheh i am from italy
with my e8400 i go 1,30 VTT with 70nb gtl and 1,65vnb for 500 stable with prime....
i tryed all settings but i can not boot at more then 500...

[adya]

omg 1,43 VTT and 1,50 VNB u fool adya ^_*

try boot 520 pls and tell me if u can do that

actually i dont think my vnb and vtt is too high .
eva had his x6800 @3.6ghz /400fsb -vnb 1.66v cpu vtt-1.44 memory 2.54 vcore -1.39
my volts are only slightly higher at 475/3.8ghz . i dont think i need to lower them. am i wrong? i did try lowering my vtt but my system wouldnt post after wards. it must need the xtra vtt .

[Griff]

did u only run occt for 1 hour? just asking becuase ive run occt for 2 hours and have had errors at 1hour and 50min ! from what ive read u need atleast 2 hours on occt.

2hrs stable

[Praz]

2hrs stable

Those settings shouldn't be no issue for the X48 board. The X38 will run the same with default VTT and GTLREF set to disabled.

[Griff]

Default VTT and GTLREF set to disabled reulted in OCCT bombing out after 5 mins..

[GlowingBulb]

Guys, please bear with me if I'm asking a question thats already been covered previously but I'm at page 26 in this thread & no where near 1/2 way though the X38 thread!

Thanks to Clunk & Praz for their help so far, even if their comments wasnt aimed directly at me

I am struggling to get an FSB of 435 that is OCCT stable (very large). The longest my rig has gone before locking up is 15mins

I am a recent convert to DFI boards as those fine guys at Scan are stocking them now, until then DFI wasnt really an option for me.

I've posted my most stable BIOS settings below

One thing of concern coming from the Maximus Formula is the increased volts I'm having to put through my NB, I though 1.45v was high on the MF

I'll be putting my NB under water this weekend when I get the time & the block gets delivered, until then I'm using the bundled HSF with an 80mm fan blowing though it; the highest I've seen the NB get to is 41deg. My system temps as indicated by SG are in the region of 55deg at their highest. Are these acceptable?

Anyhoo, thoughts on what I can do to get past this nightmare 435MHz are appreciated.

Note: Ram timings & settings are low, I'm just chasing a max FSB for the time being.

CPU Feature
Thermal Management Control: Disabled
PPM(EIST) Mode: Disabled
Limit CPUID MaxVal: Disabled
CIE Function: Disabled
Execute Disable Bit: Disabled
Virtualization Technology: Disabled
Core Multi-Processing: Enabled

Exist Setup Shutdown: Mode 2
Shutdown after AC Loss: Disabled
CLOCK VC0 divider: AUTO
CPU Clock Ratio Unlock: Enabled
CPU Clock Ratio: 8
Target CPU Clock: 3480
CPU Clock: 435
Boot Up Clock: Auto
DRAM Speed: 333/667
Target DRAM Speed: DDR2 871
PCIE Clock: 100mhz
PCIE Slot Config: 1X 1X

CPU Spread Spectrum: Disabled
PCIE Spread Spectrum: Disabled
SATA Spread Spectrum: Disabled

Voltage Settings
CPU ViD Control: 1.42v (1.47v BIOS actual)
CPU VID Special Add: Auto
DRAM Voltage Control: 2.12v (2.09v BIOS actual)
SB Core/CPU PLL Voltage: 1.64v
NB Core Voltage: 1.579v (1.55 BIOS actual)
CPU VTT Voltage: 1.579 (1.60 BIOS actual)
Vcore Droop Control: Disable
Clockgen Voltage Control: 3.45v
GTL+ Buffers Strength: Strong
Host Slew Rate: Weak
GTL REF Voltage Control: Enable
x CPU GTL1/3 REF Volt: 110
x CPU GTL 0/2 REF Volt: 109
x North Bridge GTL REF Volt: 106

DRAM Timing
Enhance Data transmitting: Normal
Enhance Addressing: Normal
T2 Dispatch: Disabled

Clock Setting Fine Delay
Ch1 Clock Crossing Setting: AUTO
DIMM 1 Clock fine delay: Current
DIMM 2 Clock fine delay: Current
Ch 1 Command fine delay: Current
Ch 1 Control fine delay: Current


Ch2 Clock Crossing Setting: AUTO
DIMM 3 Clock fine delay: Current
DIMM 4 Clock fine delay: Current
Ch 2 Command fine delay: Current
Ch 2 Control fine delay: Current

Ch1Ch2 CommonClock Setting: Auto

Ch1 RDCAS GNT-Chip Delay: Auto
Ch1 WRCAS GNT-Chip Delay: Auto
Ch1 Command to CS Delay: Auto

Ch2 RDCAS GNT-Chip Delay: Auto
Ch2 WRCAS GNT-Chip Delay: Auto
Ch2 Command to CS Delay: Auto

CAS Latency Time (tCL): Auto (5)
RAS# to CAS# Delay (tRCD): Auto (5)
RAS# Precharge (tRP): Auto (5)
Precharge Delay (tRAS): Auto (15)
All Precharge to Act: AUTO
REF to ACT Delay (tRFC): AUTO
Performance LVL (Read Delay) (tRD): AUTO

Read delay phase adjust: Enter

Ch1 Read delay phase (4~0)
Channel 1 Phase 0 Pull-In: Auto
Channel 1 Phase 1 Pull-In: Auto
Channel 1 Phase 2 Pull-In: Auto
Channel 1 Phase 3 Pull-In: Auto
Channel 1 Phase 4 Pull-In: Auto

Ch2 Read delay phase (4~0)
Channel 2 Phase 0 Pull-In: Auto
Channel 2 Phase 1 Pull-In: Auto
Channel 2 Phase 2 Pull-In: Auto
Channel 2 Phase 3 Pull-In: Auto
Channel 2 Phase 4 Pull-In: Auto

MCH ODT Latency: AUTO
Write to PRE Delay (tWR): AUTO
Rank Write to Read (tWTR): AUTO
ACT to ACT Delay (tRRD): AUTO
Read to Write Delay (tRDWR): AUTO
Ranks Write to Write (tWRWR): AUTO
Ranks Read to Read (tRDRD): AUTO
Ranks Write to Read (tWRRD): AUTO
Read CAS# Precharge (tRTP): AUTO
ALL PRE to Refresh: AUTO

[Rinaun]

Lower your NB volts. you need around 1.35 for your FSB currently. Your CPU VTT is way off as well. Try 1.3 VTT with GTLS of 125 115 105. Also, switch CPU special add to .23%, auto adds extra volts.

Edit: Can someone explain this to me? Isn't it the same thing to have say (for example) 1.6NB and have 70 on the gtls, or 1.4 and like 90. I mean all you're doing is telling it to select a voltage assigned to by number, right? So theoretically you could run maybe 1.2 NB with a very high gtl number (120, or 130) instead of 1.65 and a number like 50 or 60.

[zsamz_]

glowingbulb you cpuvtt is way too high and your gtl settings are way off
set cpuvtt@1.45v-1.5v
set gtl 1:130 2:120 3:100 then play around+or -3
+set fsb volt to 1.4
all gtl settings are related to cpuvtt
use prime95 to test stability

[KanGaXx]

lol i try another time this answer :
ANY IDEA FOR SETTING TO GO BEYOND 500 FSB (e8400 cpu) ???

[karateo]

lol i try another time this answer :
ANY IDEA FOR SETTING TO GO BEYOND 500 FSB (e8400 cpu) ???

honestly,
i found it very very easy
increase vcore and set nb around 1.4 to make sure it's not holding you back

for 4000mhz you may need more than 1.4 vcore
also set vtt 1.15 and gtls 63/63/67
this let me boot up to 4500 with E8400

[GlowingBulb]

Thanks for the comments guys, I'll be giving them a go tomorrow.

I thought I vaguely understood the GTL settings with the help of Clunks tables, however since 2 of you replied with settings much higher than what i believed the GTLs should be set to could somebody point me in the right direction for some more reading on the subject?

eg. If I have a VTT setting of 1.5v I would have thought that my GTLs should be 1- 102 2 - 101 & NB 103

The advised NB seems to be in the right ball park but the CPU is miles higher

Thanks in advance

[zsamz_]

lol i try another time this answer :
ANY IDEA FOR SETTING TO GO BEYOND 500 FSB (e8400 cpu) ???

you need 1.5v+ on nb

[GlowingBulb]

Methinks I'm crippled with a Q6600 that doesnt want to go above 430MHz, it was similar on my Maximus Formula too. I guess 2 boards maxing out at 430MHz, OCCT stable are trying to tell me something.

On a happier side note; I can run OCCT all day long at 8 x 430 with none of the temps in SG hitting 50deg.

Time to see how tight I can set my memory to & up the multiplier to 9x.

I wonder if I'd see any big increase if I treat myself to a Q9450? Thoughts anybody? (Yes I know full well that YMMV )

@ aerie: I've found the guys on this forum very helpful, more than any other forum I browse. What I do find though, is to give as much infomation as you can about your current settings & hardware; that way those that have more experience with the board can offer informed advice. There are a few BIOS templates in the last couple of pages that you could copy / paste, print out & fill in the relevent.

[Clunk]

Edit: oops, sorry ignore this

[Big Lar]

lol i try another time this answer :
ANY IDEA FOR SETTING TO GO BEYOND 500 FSB (e8400 cpu) ???

I had mine at 515 with 1.525NB, VTT @ 1.12 was all. That was with 2x2gb of ram as well. GTL's were 63/63/67 at the time, which is probably why I was not stable then

Larry

[Jor3lBR]

Methinks I'm crippled with a Q6600 that doesnt want to go above 430MHz, it was similar on my Maximus Formula too. I guess 2 boards maxing out at 430MHz, OCCT stable are trying to tell me something.

On a happier side note; I can run OCCT all day long at 8 x 430 with none of the temps in SG hitting 50deg.

Time to see how tight I can set my memory to & up the multiplier to 9x.

I wonder if I'd see any big increase if I treat myself to a Q9450? Thoughts anybody? (Yes I know full well that YMMV )

Skip the Q9450. Low multi means trouble to OC. I haven't seen a single good results with this processor in this mobo.

Most Low VID Q6600 or good batches can go all the way to 4005Mhz on Water or if you like low volts they can go 3600Mhz on air with only 1.21vtt and 1.26vnb.

The Q9450 will require a reck of a lot more vcore, vnb and vtt to run 3600Mhz and not fully stable...

[Jultsu]

Anyone else running 8GB? I couldn't get 9x420 stable (it was with 2*2GB) so now I'm running 9x400 stable.

[Clunk]

Anyone else running 8GB? I couldn't get 9x420 stable (it was with 2*2GB) so now I'm running 9x400 stable.

I did the Geil Black Dragon 2GB modules ok at 1066Mhz.

The modules wouldn't go any higher, but I will try some different settings tomorrow if required

[adya]

2hrs stable

just 2 hours? i heard its 2hours and 10mins minimum ! lol just kidding mate haha
yeah those e8400 are good value ,they overclock at such low volts and temp and are so cheap . im looking at getting one for $200 au.
i really want run this thing at 4ghz + 24/7