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DFI UT X58-T3EH8 - i7 920 @230 Bclk!

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#1
Max 230Mhz BCLK​

I had all but given up after I found my initial max Bclk 32M Pi stable BCLK of 220Mhz with tight 878mhz 7-7-7-17 timings.

But I'd like to thank Hazzan (233BCLK) and Solarfall (230BCLK) for their inspiration with their DFI UT X58-T3EH8 max BCLK attempts as this prompted me to keep working at it :thumb:

After numerous bios reboots and trying looser timings and a few voltage combinations, I finally surpassed my previous max memtest86+ v2.11 bootable BCLK of 224, moving all the way up to 230-231 memtest bootable. :woot:

Enough for a quick boot into windows for a CPUZ Validation at least :D





System specs
  • Intel Core i7 920 3836A756
  • Thermalright Ultra 120 Extreme + LGA1366 Bolt Thru kit + 2x 120x38mm Scythe UltraKaze 2000rpm 87cfm fans in push/pull
  • DFI LP UT X58-T3EH8 R.A51 - 01/06 beta bios
  • 128MB Gainward FX5200 PCI
  • 2x1GB Corsair DDR3-2133C9DF Dominator
  • Ram cooling: 3x 60x25mm Sunon 23.5cfm Maglev fans
  • 750GB Samsung HD753LJ
  • Pioneer DVD-RW
  • 1KW Corsair HX1000 psu
  • WinXP Pro SP3 full nLite updated hotfixes

01/06 Beta Bios settings used:
Code:
[B]Genie BIOS Setting[/B]

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

[B]***** Logical Processor Setting *****[/B]
Intel HT Technology: Enabled
Active Processor Cores: All

[B]DRAM Timing[/B]
Memory Control Setting: AUTO
Memory LowGap: 1024M

DRAM Command Rate: AUTO
CAS Latency Time (tCL): 9
RAS# to CAS# Delay (tRCD): 9
RAS# Precharge (tRP): 9
Precharge Delay (tRAS): 24
REF to ACT Delay (tRFC): 88
Write to PRE Delay (tWR): AUTO
Rank Write to Read (tWTR): 16
ACT to ACT Delay (tRRD): 6
Row Cycle Time (tRC): 31
Read CAS# Precharge (tRTP): 6
Four ACT WIN Time (tFAW): 31

[B]Voltage Setting[/B]
O.C. Shut Down Free: Enable O.C.S.D.F
CPU VID Control: 1.350v
CPU VID Special Add Limit: Enabled
CPU VID Special Add: Auto
Vcore Droop Control: Enabled
[B]DRAM Bus Voltage: 1.875v[/B]
[B]DRAM PWM Switch Frequency: Nominal[/B]
DRAM PWM Phase Control: 2 Phase Operation
[B]CPU VTT Special Add: +0.0750v
CPU VTT Voltage: 1.53v[/B]
[B]VTT PWM Switch Frequency: Nominal[/B]
VTT PWM Phase Control: 2 Phase Operation
CPU PLL Voltage: 1.80v
[B]IOH/ICH 1.1V Voltage: 1.27v
IOH Analog Voltage: 1.25v
ICH 1.5 Voltage: 1.7v[/B]
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: Disabled
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: 17x

[B]* BCLK/UCLK/QPI Controller Settings *[/B]
QPI Control Settings: Enabled
QPI Link Fast Mode: Enabled
QPI Frequency: AUTO
CPU Base Clock (BCLK): 231 Mhz
Boot Up CPU Base Clock: AUTO
PCIE Clock: 103 Mhz
DRAM Frequency: 6x
UnCore Frequency: 12x (optimal to keep Uncore at 2x DRAM Frequency)

CPU Spread Spectrum: Disabled
PCIE Spread Spectrum: Disabled
Settings highlighted in bold were what I played with to reach 230 BCLK.
 
Joined
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#2
Max BCLK Super Pi 32M Benchable​

Did a fresh hard drive install which is WinXP Pro SP3 & Windows 7 beta dual bootable before attempting max Super Pi 32M benchable Bclk frequency tests. This time with 3x1GB Samsung HCF0 based modules for triple channel :)

System specs
  • Intel Core i7 920 3836A756
  • Thermalright Ultra 120 Extreme + LGA1366 Bolt Thru kit + 2x 120x38mm Scythe UltraKaze 2000rpm 87cfm fans in push/pull
  • DFI LP UT X58-T3EH8 R.A51 - 01/06 beta bios
  • 128MB Gainward FX5200 PCI
  • 2x1GB Corsair DDR3-2133C9DF Dominator + 1GB G.Skill PC3-12800HZ (3x Samsung HCF0)
  • Ram cooling: 3x 60x25mm Sunon 23.5cfm Maglev fans
  • 80GB Hitachi 7K80 SATAII
  • Pioneer DVD-RW
  • 1KW Corsair HX1000 psu
  • WinXP Pro SP3 full nLite updated hotfixes / Windows 7 beta dual boot

Triple Channel CPUZ Validation @229Bclk
Haven't pushed ICH 1.5 Voltage yet like I did for 230Bclk, so that will be next up for testing.



QPI Frequency = 4123Mhz!



Super Pi 32M
Ignore the times just testing with loose timings. Higher Bclk do require more vdimm that usual due to QPI ceiling. Without enough vdimm DFI post diagnostic LED = CF code for lack of vdimm voltage.

@226Bclk bios set - QPI Frequency = 4063Mhz



@226Bclk setFSB windows set - QPI Frequency = 4074Mhz



@227Bclk - QPI Frequency = 4088Mhz



@228Bclk - QPI Frequency = 4110Mhz
- had to bump vdimm, vcore and CPU VTT Special percentage added
- either a bad run, or lack of volts for either vdimm or CPU VTT or both led to slower 32M Pi time ?






01/06 Beta Bios settings used:
Code:
[B]Genie BIOS Setting[/B]

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

[B]***** Logical Processor Setting *****[/B]
Intel HT Technology: Enabled
Active Processor Cores: All

[B]DRAM Timing[/B]
Memory Control Setting: AUTO
Memory LowGap: 1024M

DRAM Command Rate: AUTO
CAS Latency Time (tCL): 9
RAS# to CAS# Delay (tRCD): 9
RAS# Precharge (tRP): 9
Precharge Delay (tRAS): 24
REF to ACT Delay (tRFC): 88
Write to PRE Delay (tWR): AUTO
Rank Write to Read (tWTR): 16
ACT to ACT Delay (tRRD): 6
Row Cycle Time (tRC): 31
Read CAS# Precharge (tRTP): 6
Four ACT WIN Time (tFAW): 31

[B]Voltage Setting[/B]
O.C. Shut Down Free: Enable O.C.S.D.F
CPU VID Control: 1.350v * 1.3875v
CPU VID Special Add Limit: Enabled
CPU VID Special Add: Auto
Vcore Droop Control: Enabled
[B]DRAM Bus Voltage: 1.875v & 1.905v[/B]
[B]DRAM PWM Switch Frequency: Nominal[/B]
DRAM PWM Phase Control: 2 Phase Operation
[B]CPU VTT Special Add: +0.0375v & +0.0500v
CPU VTT Voltage: 1.53v[/B]
[B]VTT PWM Switch Frequency: Nominal[/B]
VTT PWM Phase Control: 2 Phase Operation
CPU PLL Voltage: 1.80v
[B]IOH/ICH 1.1V Voltage: 1.25v
IOH Analog Voltage: 1.20v
ICH 1.5 Voltage: 1.5v[/B]
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: Disabled
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: 18x

[B]* BCLK/UCLK/QPI Controller Settings *[/B]
QPI Control Settings: Enabled
QPI Link Fast Mode: Enabled
QPI Frequency: AUTO
CPU Base Clock (BCLK): 226 to 229 Mhz
Boot Up CPU Base Clock: AUTO
PCIE Clock: 103 Mhz
DRAM Frequency: 8x
UnCore Frequency: 16x (optimal to keep Uncore at 2x DRAM Frequency)

CPU Spread Spectrum: Disabled
PCIE Spread Spectrum: Disabled
 

infrared

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#3
Awesome work Eva, and thanks for showing the settings you used!

Hmmm, i'm gonna have to get an i7 setup together soon i think!
 
Joined
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#5
i7 920 3836A756 #2
Max BClock​
Definitely this second i7 920 3836A756 is better than my first one in terms of max Bclock and low CPU VTT usage.

i7 920 3836A756 #1
  • max memtest86+ bootable bclk = 224 requiring 1.58-1.60v CPU VTT
  • max super pi 32m bclk = 222bclk (without IOH/ICH voltage tweaks) & 228bclk (with IOH/ICH voltage tweaks) requiring 1.60-1.61v CPU VTT
  • max CPUZ Validation = 230bclk requiring 1.60-1.63v CPU VTT

i7 920 3836A756 #2
  • max memtest86+ bootable bclk = 229bclk requiring 1.40-1.48v CPU VTT
  • max super pi 32m bclk = 227bclk (without IOH/ICH voltage tweaks) & ???bclk (with IOH/ICH voltage tweaks TBD) requiring 1.48-1.50v CPU VTT
  • max CPUZ Validation = 231bclk requiring 1.50v CPU VTT

TBD - Haven't tested 2nd cpu with IOH/ICH tweaks yet

Max Validation @231Bclock

CPU VTT = 1.50v





Max Screenshot @228Bclk with low CPU VTT



Max 32M @225Bclk

 
Last edited:
Joined
Oct 10, 2008
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System Name Acer Aspire V3-771G-53218G75Maii
Processor Core i5 3210M (2,5-3,1Ghz)
Memory 8GB DDR3 SODIMM
Video Card(s) Geforce GT650M
Storage Samsung 830 256GB - 750GB Toshiba drive
Software Windows 7 x64 Home Premium (non-acer-bloatware)
#6
What do you use for case cooling? I'm wondering why your load temps are below my idle temps, even with a TRUE :D
 
Joined
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655
System Name Acer Aspire V3-771G-53218G75Maii
Processor Core i5 3210M (2,5-3,1Ghz)
Memory 8GB DDR3 SODIMM
Video Card(s) Geforce GT650M
Storage Samsung 830 256GB - 750GB Toshiba drive
Software Windows 7 x64 Home Premium (non-acer-bloatware)
#8
Still, your temps are insane... Did you check other temp monitors (RealTemp, CoreTemp etc.) to see if those temps are consistent?
 
Joined
Oct 10, 2008
Messages
3,471 (1.03/day)
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655
System Name Acer Aspire V3-771G-53218G75Maii
Processor Core i5 3210M (2,5-3,1Ghz)
Memory 8GB DDR3 SODIMM
Video Card(s) Geforce GT650M
Storage Samsung 830 256GB - 750GB Toshiba drive
Software Windows 7 x64 Home Premium (non-acer-bloatware)
#10
Smart Guardian under reports cpu temp by 10-15C idle and around 25-40C load compared to Realtemp 2.90 :)
I've had the same thing with SpeedFan, which was consistently 15 degrees lower than CoreTemp, RealTemp and HWMonitor. I decided to trust the latter three then.