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DFI Lanparty UT X58-T3EH8 LGA1366 Photos, Bios and Overclocking Information Guide - Page 18 - i4memory.com - different look at memory
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Old 27-02-2009, 12:43 PM   #137
D3mon_Hunt3r
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Ok, tks.
Will start OCing on Sunday/Monday, i'm getting my WC setup up and running this weekend.
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Old 28-02-2009, 07:38 AM   #138
Renegade5399
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eva, thanks so much for this thread! My i7 920 and DFI board (with the latest beta BIOS) have been screaming since I followed some of the stuff in here. I have the 6GB Kingston DDR3 2000MHz kit and it runs perfectly at 2008MHz 8-8-8-20-1T. Just needed to bump the VTT volts up a bit!

So I am running at 4GHz with 1.36v, RAM at 2008MHz with 1.64v, and to keep the QPI stable at that speed, I set that to 1.52v. That's the lowest stable I could get on the VTT voltage.

Again, many thanks!
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Old 28-02-2009, 05:59 PM   #139
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alright MR DFI, can you help explain what the hell is going on. i just started actually testing one of my 965s with Prime and happened to have a CPU-Z window open. at 3.8GHz 1.280v i get nothing over 65C in Realtemp...everything seemed normal. i jumped up to 3.9GHz (144x27) with 1.325v and all of a sudden, the CPU multi is dropping to 26X and even 25X once in a while.

i have thermal control off, everything in CPU control but EIST on so i can run higher multi. at idle it is a solid 27X. if i drop voltage to 1.30v temps stay around 65C in Realtemp and the multi seems to stick at 27X, but going up in voltage it starts to flop around. any ideas? i am assuming throttling but at those temps it isn't the CPU...it's got to be the motherboard.
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Old 28-02-2009, 06:27 PM   #140
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By D3mon_Hunt3r View Post
Ok, tks.
Will start OCing on Sunday/Monday, i'm getting my WC setup up and running this weekend.
Looking forward to your thread with results

By Renegade5399 View Post
eva, thanks so much for this thread! My i7 920 and DFI board (with the latest beta BIOS) have been screaming since I followed some of the stuff in here. I have the 6GB Kingston DDR3 2000MHz kit and it runs perfectly at 2008MHz 8-8-8-20-1T. Just needed to bump the VTT volts up a bit!

So I am running at 4GHz with 1.36v, RAM at 2008MHz with 1.64v, and to keep the QPI stable at that speed, I set that to 1.52v. That's the lowest stable I could get on the VTT voltage.

Again, many thanks!
Glad i could help

By 3oh6 View Post
alright MR DFI, can you help explain what the hell is going on. i just started actually testing one of my 965s with Prime and happened to have a CPU-Z window open. at 3.8GHz 1.280v i get nothing over 65C in Realtemp...everything seemed normal. i jumped up to 3.9GHz (144x27) with 1.325v and all of a sudden, the CPU multi is dropping to 26X and even 25X once in a while.

i have thermal control off, everything in CPU control but EIST on so i can run higher multi. at idle it is a solid 27X. if i drop voltage to 1.30v temps stay around 65C in Realtemp and the multi seems to stick at 27X, but going up in voltage it starts to flop around. any ideas? i am assuming throttling but at those temps it isn't the CPU...it's got to be the motherboard.
is this with Vista or XP ? Vista make sure power management is set to high performance otherwise if left at default setting for power management, under load Turbo multiplier set will drop by 1x

also from tip #2 at here

TDC/TDP & TM Protection (Turbo mode effects): In CPU Feature section of bios the Set VR Current Limit Max and Thermal Management Control options control TDC/TDP and other temperature related throttling for Core i7 cpu.
  • TDC = over current protection which default Vcore OCP max is 140A (for CPU PWM IC). At >70A, TDC is tripped, it will disable Turbo mode - thus you may see your cpu multiplier drop by 1x or 2x.
  • TDP = thermal design power according to DFI is tripped at around >80W which will also disable Turbo mode
  • Set VR Current Limit Max = Enable to disable both TDC and TDP protection functions thus allowing Turbo mode to run without any TDC/TDP protection.
  • Thermal Management Control = Tripped when core temp is >90C, Turbo mode will disable. At >105C core temp, will force system shutdown.
  • Only when 965 cpu is installed are 2 additional options for TDC/TDP displayed for TDC Enable: x TDC Limit: and TDP Enable: Disabled x TDP Limit: 0
So do you have Set VR Current Limit Max = Enable or Disabled ?
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Old 28-02-2009, 06:52 PM   #141
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By eva2000 View Post
is this with Vista or XP ? Vista make sure power management is set to high performance otherwise if left at default setting for power management, under load Turbo multiplier set will drop by 1x

also from tip #2 at here

So do you have Set VR Current Limit Max = Enable or Disabled ?
Vista X64, power management set to high performance already.

it was disabled, but with the 965 you get the other two options visable which were disabled. i have enabled VR Current and just started Prime95 again. we'll see if that helps.

temps are at 68C in Realtemp again and so far no fluttering. hmmm, i would have thought having both TDC and TDP options disabled would have prevented it from happening regardless of what VR Current was set to.

and that is why you are called Mr. DFI...thanks bud, it was driving me nuts
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Old 01-03-2009, 12:03 AM   #142
jack2jack
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Hi, and thanks for this thread.
Please excuse my bad english.

I have a T3eH8 too, but my i920 (batch 3838B079) don´t likes any CPU/VTT. If i raise this Voltage up to 1,26 i become restarts after a few minutes of Prime equal which V-Core or ..... Have you ever heard from those problems?
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Old 01-03-2009, 12:42 AM   #143
eva2000
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By 3oh6 View Post
Vista X64, power management set to high performance already.

it was disabled, but with the 965 you get the other two options visable which were disabled. i have enabled VR Current and just started Prime95 again. we'll see if that helps.

temps are at 68C in Realtemp again and so far no fluttering. hmmm, i would have thought having both TDC and TDP options disabled would have prevented it from happening regardless of what VR Current was set to.

and that is why you are called Mr. DFI...thanks bud, it was driving me nuts
No probs.. feel free to share your findings and results for DFI X58 as well

By jack2jack View Post
Hi, and thanks for this thread.
Please excuse my bad english.

I have a T3eH8 too, but my i920 (batch 3838B079) don´t likes any CPU/VTT. If i raise this Voltage up to 1,26 i become restarts after a few minutes of Prime equal which V-Core or ..... Have you ever heard from those problems?
Welcome

Really hard to determine without rest of the info - for specific config/setting troubleshooting probably best to start your own thread with info for hardware specs' and bios settings you have tried (using bios template here)

It can be a fine balance for bclk/mem with vcore, cpu vtt, vdimm and ioh/ich related voltages. So far come across 3 types of core i7 cpus from my rounds on forums and my own experience

Type 1 - core i7 cpus that need high to very high cpu vtt to overclock for memory and bclk.

Type 2 - core i7 cpus that like low-medium low cpu vtt to overclock for memory and bclk and scale with cpu vtt and memory voltage

Type 3 - core i7 cpus that only like low-medium low cpu vtt to overclock for memory and bclk BUT DO NOT scale for either cpu vtt and memory voltage or both

low cpu vtt = 1.3-1.35v
medium cpu vtt = 1.35-1.5v
high cpu vtt = 1.5-1.55v
very high cpu vtt = >1.55-1.65v

Not to mention cpu vtt needed also depends on actual memory modules used too.
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Old 01-03-2009, 03:22 AM   #144
jack2jack
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OK,
here are my settings.
But i tried every voltage up to 1,45 V-Core with these Clocks, if i raise the VTT he becomes instable!
It makes no sense compared with the settings of other user, i think. Or i am wrong? if i raise up my uncore frequency´s he becomes instable, too. I think because of the VTT Voltage.

So, i think my one is a ultra low vtt voltage one!!!
But my new one is coming next week, with some corsair RAM.

Oh the Rest of my hardware you con find in my sig, in a few minutes....

Genie BIOS Setting

CPU Feature
Set VR Current Limit Max: Enabled
Thermal Management Control: Disabled
EIST Function: Enabled
CxE Function: Enabled
Execute Disable Bit: Disabled
Virtualization Technology: Disabled
TDC Enable: Disabled
x TDC Limit: 0
TDP Enable: Disabled
x TDP Limit: 0

***** Logical Processor Setting *****
Intel HT Technology: Enabled
Active Processor Cores: All

DRAM Timing
Channel Interleave Setting: AUTO
Rank Interleave Setting: AUTO
Memory LowGap: 1536M

DRAM Command Rate: 1N
CAS Latency Time (tCL): 9
RAS# to CAS# Delay (tRCD): 9
RAS# Precharge (tRP): 9
Precharge Delay (tRAS): 24
REF to ACT Delay (tRFC): AUTO
Write to PRE Delay (tWR): AUTO
Rank Write to Read (tWTR): AUTO
ACT to ACT Delay (tRRD): AUTO
Row Cycle Time (tRC): AUTO
Read CAS# Precharge (tRTP): AUTO
Four ACT WIN Time (tFAW): AUTO

Voltage Setting
O.C. Shut Down Free: Enable O.C.S.D.F
CPU VID Control: 1,3175
CPU VID Special Add Limit: Enabled
CPU VID Special Add: Auto
Vcore Droop Control: Enabled
DRAM Bus Voltage: 1.645v
DRAM PWM Switch Frequency: Nominal
DRAM PWM Phase Control: 2 Phase Operation
CPU VTT Special Add: AUTO
CPU VTT Voltage: 1.21v
VTT PWM Switch Frequency: Nominal
VTT PWM Phase Control: 2 Phase Operation
CPU PLL Voltage: 1.80v
IOH/ICH 1.1V Voltage: 1.19v
IOH Analog Voltage: 1.20v
ICH 1.5 Voltage: 1.5v
ICH 1.05V Voltage: 1.05v
DIMM 1/2 DQ/DQSTB Bus VREF: -00.0%
DIMM 3/4 DQ/DQSTB Bus VREF: -00.0%
DIMM 5/6 DQ/DQSTB Bus VREF: -00.0%
ADDR/CMD VREF Control: Disabled
x DIMM 1/2 ADDR/CMD Bus VREF: 110
x DIMM 3/4 ADDR/CMD Bus VREF: 110
x DIMM 5/6 ADDR/CMD Bus VREF: 110
CPU QPI Drive Strength: Normal
IOH QPI Drive Strength: Normal

Exit Setup Shut down: Mode 2
O.C. Fail Retry Counter: Enabled
O.C. Fail CMOS Reload: Disabled

PPM Function: Enabled
Turbo Mode Function: Enabled
1 core Max Turbo Ratio: 22x
2 core Max Turbo Ratio: 21x
3 core Max Turbo Ratio: 21x
4 core Max Turbo Ratio: 21x
CPU Non-Turbo Clock Ratio: 20x

* BCLK/UCLK/QPI Controller Settings *
QPI Control Settings: Enabled
QPI Link Fast Mode: Enabled
QPI Frequency: AUTO
CPU Base Clock (BCLK): 182 Mhz
Boot Up CPU Base Clock: AUTO
PCIE Clock: 100 Mhz
DRAM Frequency: 8x Memory multipliers
UnCore Frequency: 16x

CPU Spread Spectrum: Disabled
PCIE Spread Spectrum: Disabled

Sys.: FI X58T3eH8, Core i7 920, ADATA G1600, Coba Nitro 750W, Cosmos S, Gainward GS4850, HP w2207h, Emu 0404

Last edited by jack2jack; 01-03-2009 at 03:32 AM.
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