hehe, this is not stable, but I love the RAM running at this speed:
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hehe, this is not stable, but I love the RAM running at this speed:
![]()
DFI UT x58/i7 940
TRUE Black + 2 Scythe s-flex PushPull
Dominator GT 3x2Gb 2000 CL8 @ 1600 CL6
XFX GTX280 XXX
Velociraptor 150 Raid0 - Seagate 500 Raid1
Corsair Hx1000
Lian-Li PC-A77 Mod
**Sorry by my Spanglish**
I started with the BIOS settings found at this link:
http://i4memory.com/f80/dfi-lp-ut-x5...emplate-12919/
The following are some changes and my voltage setting.
These setting work up to a BCLK of 172 but using 173 causes the system to shutdown and then will not boot until I do a Reset/Power Off to reset the CMOS.------------------
Genie BIOS Setting
CPU VID Control: 1.375v
Vcore Droop Control: Enabled
DRAM Bus Voltage: 1.695v
CPU VTT Voltage: 1.39v
CPU PLL Voltage: 1.80v
IOH/ICH 1.1V Voltage: 1.11v
IOH Analog Voltage: 1.10v
ICH 1.5 Voltage: 1.5v
ICH 1.05V Voltage: 1.05v
Turbo Mode Function: Disabled
CPU Non-Turbo Clock Ratio: 20x
* BCLK/UCLK/QPI Controller Settings *
QPI Frequency: 4.8GT/s
CPU Base Clock (BCLK): 172 Mhz
DRAM Frequency: 1376Mhz = 8x DRAM multiplier
UnCore Frequency: 2752 = 2x DRAM Frequency
A BCLK of 172 will work with a lower vcore setting but I've gone up to 1.45v with 173. I was using a lower DRAM and VTT voltage for 172 and raised it to the above values for 173 but that didn't help. I'm just about ready to give up on this i7 920 and try something else. Any suggestions before I throw in the towel?
| Intel Core i7-2600K | ASRock P67 EXTREME4 GEN3 | G.SKILL Sniper Series 8GB (2 x 4GB) DDR3 1866 | EVGA GTS 450 |
| Swiftech APOGEE Drive II CPU Waterblock with Integrated Pump | XSPC RX360 | Swiftech MCP655-B Pump | XSPC Dual 5.25in. Bay Reservoir |
| Thermaltake 850W PSU | NZXT SWITCH 810 | Windows 7 64-bit |
[SIGPIC][/SIGPIC]
not bad 3.8ghz 1.232-1.264v is also my 24/7 comfy clocks
hmmm maybe i incorrected worded my bios template thread - it's NOT meant to be recommended settings to try, but a template for users to replace my values with your own values for sharing your settings on forums
what's your full bios settings - list them here
As to my mismatched testing some CAS7
6x1GB 7-7-7-18 1T
Seems this mismatched combo does pretty well tightening both main and subtimings managing up to DDR3-1718Mhz 7-7-7-18 1T at 1.875v bios. Needed a notch or two higher vdimm when subtimings were tightened otherwise I could of lowered vdimm by ~0.25-0.30v.
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 - 01/23 beta bios
- 128MB Gainward FX5200 PCI
- 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
Memory configuration:
- Dimm slot #1: 1GB G.Skill PC3-12800HZ (Samsung HCF0)
- Dimm slot #2: 1GB Corsair DDR3-2133C9DF Dominator (Samsung HCF0)
- Dimm slot #3: 1GB Cellshock PC3-14400 (Micron D9GTR)
- Dimm slot #4: 1GB Corsair DDR3-2133C9DF Dominator (Samsung HCF0)
- Dimm slot #5: 1GB Cellshock PC3-14400 (Micron D9GTR)
- Dimm slot #6: 1GB G.Skill PC3-12800HZ (Samsung HCF0)
Super Pi 32M stable
- DDR3-1606Mhz 7-7-7-18 1T 1.740v bios (1.745v DMM)
- DDR3-1702Mhz 7-7-7-18 1T 1.830v bios (1.835v DMM)
- DDR3-1718Mhz 7-7-7-18 1T 1.875v bios (1.880v DMM)
DDR3-1606Mhz 7-7-7-18 1T 1.740v bios (1.745v DMM)
DDR3-1702Mhz 7-7-7-18 1T 1.830v bios (1.835v DMM)
DDR3-1718Mhz 7-7-7-18 1T 1.875v bios (1.880v DMM)
![]()
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I didn't take them as recommended. I just failed to use my full bios settings.
The following BIOS settings are stable but when I increase BCLK to 173 the system will not boot. I've tried a vcore up to 1.45v.
When I had this 920 in my P6T I got up to 4074 MHz with Turbo on (21x194) although not stable. I also had Prime95 stable for 30 min @ 20x195 (3900 MHz) but I stopped it because it was hot.
Bios settings used with 0114 and i7 920:
Code:Genie BIOS Setting CPU Feature Set VR Current Limit Max: Disabled Thermal Management Control: Disabled EIST Function: Disabled CxE Function: Disabled Execute Disable Bit: Disabled Virtualization Technology: Disabled ***** Logical Processor Setting ***** Intel HT Technology: Enabled Active Processor Cores: All DRAM Timing Memory Control Setting: AUTO 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: 1.375v CPU VID Special Add Limit: Enabled CPU VID Special Add: Auto Vcore Droop Control: Enabled DRAM Bus Voltage: 1.695v DRAM PWM Switch Frequency: Nominal Frequency DRAM PWM Phase Control: 2 Phase Operation CPU VTT Special Add: AUTO CPU VTT Voltage: 1.39v VTT PWM Switch Frequency: Nominal Frequency VTT PWM Phase Control: 2 Phase Operation CPU PLL Voltage: 1.80v IOH/ICH 1.1V Voltage: 1.11v IOH Analog Voltage: 1.10v 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: Disabled x 1 core Max Turbo Ratio: 22x x 2 core Max Turbo Ratio: 21x x 3 core Max Turbo Ratio: 21x x 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: 4.8GT/s (BCLK * 18 * 2) CPU Base Clock (BCLK): 172 Mhz Boot Up CPU Base Clock: AUTO PCIE Clock: 100 Mhz DRAM Frequency: BCLK x 08 (1376MHz) UnCore Frequency: BCLK x 16 (2752MHz -> 2x DRAM Frequency) CPU Spread Spectrum: Disabled PCIE Spread Spectrum: DisabledBIOS Voltage Readings
CPU Core Voltage: 1.36v
DRAM Bus Voltage: 1.66v
IOH Core Voltage: 1.08v
CPU VTT Voltage: 1.32vSmart Guardian Readings
CPU Voltage: 1.36v
FSB VTT Voltage: 1.32v
NB Core Voltage: 1.08v
VDIMM Voltage: 1.66v
| Intel Core i7-2600K | ASRock P67 EXTREME4 GEN3 | G.SKILL Sniper Series 8GB (2 x 4GB) DDR3 1866 | EVGA GTS 450 |
| Swiftech APOGEE Drive II CPU Waterblock with Integrated Pump | XSPC RX360 | Swiftech MCP655-B Pump | XSPC Dual 5.25in. Bay Reservoir |
| Thermaltake 850W PSU | NZXT SWITCH 810 | Windows 7 64-bit |
[SIGPIC][/SIGPIC]
When it doesn't boot what postled code ?
play with PWM switch frequencies as well some memory like reduce 15% over nominal
and play with modules in different order for same dimm slots
also play with subtimings too
DRAM memory tips #1, #2 and #3 http://i4memory.com/102537-post3.html
Also have you tried bclk values other than 173 ? i.e. 174 or higher ?
I'm using 1/23 pre-beta bios and first time i came across this little bug i was testing 6x1GB mixed tri channel and 7-7-7-18 1t and slowly bumping bclk on 8x mem multi. Was fine from starting bclk of 150 up to 166. Then set 167 got postled 75 on bios exit/boot up and blank screen. Then tried bclk from 168 to 216 and had no probs with 6x1GB @859mhz 7-7-7-18 1T http://i4memory.com/f83/6x1gb-corsai...rclocks-14112/ heh
---
Hi Eva can you help me with oc my cpu please? I can't pass 3.4ghz even if I try to raise the vcore. I know I miss something here.
Last edited by rusty; 01-30-2009 at 09:11 PM.
bit general there... elaborate as to what happens past 3.4ghz, huge diff between can't boot at >3.4ghz vs fail prime95 immediately vs getting bsods/reboots vs failing prime95 after 7 day straight run heh
you need to give us something to work with - aims/oc'ing objectives, system specs, cooling and ram used as what settings you've tried as per template here http://i4memory.com/f80/dfi-lp-ut-x5...emplate-12919/
Show us what you have tried and what did and didn't work for you. I still follow the same process i outlined at http://i4memory.com/f55/announcement...y-eva2000.html with every new system including i7/x58. Isolate and test each part of the system i.e. start with memory then cpu then the rest.
So in your case (and anyone else reading):
stuff in bold could be more relevant for your situation
- Find the limits of your memory before you find limits of your cpu/bclk.
- Find out what your memory can do on each mem multiplier/cpu multi combination.
- Find out what voltages your memory likes and what's the optimal voltage difference between vdimm and uncore (cpu vtt) for your particular ram/setup
- Find out whether the ram likes pwm switch frequencies of reduce 15% or nominal.
- Find out which of your modules likes which dimm slot 2 or 4 or 6.
- Found out what auto subtimings translate to in cpu tweaker or memset at each mem frequency/timing combination.
Basically get to know how your ram behaves on the motherboard with your particular i7 cpu before looking into the cpu side. Sure, there's a wide variance between i7 cpu memory controllers but I'm wondering how much of this variance is due to differences in how particular cpu memory controller interacts with different types of memory modules - down to their PCB/trace design ? Or just bios updates i.e. my Samsung HCF0 based G.Skill PC3-12800HZ didn't do too well with 12/18 and 12/31 bios and that effected cpu stability and what voltages I needed to use. Come 1/06 beta and 1/23 pre beta, HCF0 modules now shine and keep up with Corsair DDR3-2133 Dominator HCF0 and cpu clocking much easier.
Trust me when I say figuring out ram side will make overclocking the cpu much easier![]()
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so such thing as 1:1 lowest mem multi is 6x so 133bclk 6x mem = DDR3-800Mhz speeds
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= no idea![]()
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doubt DFI needs a voltage override jumper seeing as VCORE available in bios is 1.6 + 14.8% = >1.83v
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one more question :> when I set cpu vtt voltage to 1.26v I get 1.21v in Everest & Smart Guardian. Vdroop is enabled. Eva I've read your tips but it seems to be a big gap in volts.
use multimeter to measure real voltage values so you can adjust accordingly
![]()
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I usually get one of two codes: 75 or 88. When it's 88 I can't use the reset/power buttons to reset the CMOS. I have to turn power off at the PSU. Sometimes this takes a couple of times before it boots again. If it is 75 then I can reboot using the reset/power switches.
This didn't make any difference as far as I can tell.play with PWM switch frequencies as well some memory like reduce 15% over nominal
Didn't help.and play with modules in different order for same dimm slots
See below.also play with subtimings too
Thanks.DRAM memory tips #1, #2 and #3 http://i4memory.com/102537-post3.html![]()
Yes. 174, 175, 180, 190 and others that I've forgotten.Also have you tried bclk values other than 173 ? i.e. 174 or higher ?
I flashed to the 1/23 pre-beta bios. I then kinda through in the towel. I've swapped memory. I'm now using my dual channel Corsair DDR3-2133 so I'm going to start over with this memory.I'm using 1/23 pre-beta bios and first time i came across this little bug i was testing 6x1GB mixed tri channel and 7-7-7-18 1t and slowly bumping bclk on 8x mem multi. Was fine from starting bclk of 150 up to 166. Then set 167 got postled 75 on bios exit/boot up and blank screen. Then tried bclk from 168 to 216 and had no probs with 6x1GB @859mhz 7-7-7-18 1T http://i4memory.com/f83/6x1gb-corsai...rclocks-14112/ heh
I was doing something close to this but it's nice to be reminded.So in your case (and anyone else reading):
- Find the limits of your memory before you find limits of your cpu/bclk.
- Find out what your memory can do on each mem multiplier/cpu multi combination.
- Find out what voltages your memory likes and what's the optimal voltage difference between vdimm and uncore (cpu vtt) for your particular ram/setup
- Find out whether the ram likes pwm switch frequencies of reduce 15% or nominal.
- Find out which of your modules likes which dimm slot 2 or 4 or 6.
- Found out what auto subtimings translate to in cpu tweaker or memset at each mem frequency/timing combination.
Trust me when I say figuring out ram side will make overclocking the cpu much easier![]()
Here's the DRAM timing listed in the BIOS. Which of the subtimings to you set?
DRAM Timing | CPU-Tweaker (Yes/No)
------------------------------------
DRAM Command Rate: 1N | Yes
CAS Latency Time (tCL): 9 | Yes
RAS# to CAS# Delay (tRCD): 9 | Yes
RAS# Precharge (tRP): 9 | Yes
Precharge Delay (tRAS): 24 | Yes
REF to ACT Delay (tRFC): AUTO | Yes
Write to PRE Delay (tWR): AUTO | Yes
Rank Write to Read (tWTR): AUTO | > Tip #3: Write to Read (Same Rank)
ACT to ACT Delay (tRRD): AUTO | Yes
Row Cycle Time (tRC): AUTO | No ?
Read CAS# Precharge (tRTP): AUTO | Yes
Four ACT WIN Time (tFAW): AUTO | No ?
| Intel Core i7-2600K | ASRock P67 EXTREME4 GEN3 | G.SKILL Sniper Series 8GB (2 x 4GB) DDR3 1866 | EVGA GTS 450 |
| Swiftech APOGEE Drive II CPU Waterblock with Integrated Pump | XSPC RX360 | Swiftech MCP655-B Pump | XSPC Dual 5.25in. Bay Reservoir |
| Thermaltake 850W PSU | NZXT SWITCH 810 | Windows 7 64-bit |
[SIGPIC][/SIGPIC]
ya right there
75 i get when vdimm and cpu vtt ain't enough for clocks set, 88 yeah means switch of psu and then hold home key while hitting power to revert to default bclk
loosen everything up and work back to tighter timings as you test
so
More results from meREF to ACT Delay (tRFC): 88 and higher
Write to PRE Delay (tWR): AUTO | Yes
Rank Write to Read (tWTR): try values between 20 to 28
ACT to ACT Delay (tRRD): 6 or higher
Row Cycle Time (tRC): AUTO | 31
Read CAS# Precharge (tRTP): 6 or higher
Four ACT WIN Time (tFAW): 31
Max 6x1GB 8-8-8-24 1T Clocks
Changing to 10x memory multiplier, tried to find max 6x1GB 8-8-8-24 1T clocks and ended up with DDR3-2000Mhz 8-8-8-24 1T at 2.04v bios (2.045v real) only for tried 1M Super Pi as 32M Pi test failed. I dropped bclk and mem clocks to DDR3-1960Mhz 8-8-8-24 1T at same vdimm but Super Pi 32M failed at 22nd iteration. Similar trend occured at DDR3-1940mhz as well.
I recall it's probably the Cellshock PC3-14400 Micron D9GTR holding the 6x1GB modules back as it needed more vdimm for do such clocks even on P35/X48 DDR3 boards closer to 2.1+ volts for around DDR3-1920 8-8-8-x. Decided to stop there as unnecessary stress to i7 IMC ain't needed when I shall have some nice DDR3-2000 CAS7 rated triple channel memory due my way this coming week![]()
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 - 01/23 beta bios
- 128MB Gainward FX5200 PCI
- 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
Memory configuration:
- Dimm slot #1: 1GB G.Skill PC3-12800HZ (Samsung HCF0)
- Dimm slot #2: 1GB Corsair DDR3-2133C9DF Dominator (Samsung HCF0)
- Dimm slot #3: 1GB Cellshock PC3-14400 (Micron D9GTR)
- Dimm slot #4: 1GB Corsair DDR3-2133C9DF Dominator (Samsung HCF0)
- Dimm slot #5: 1GB Cellshock PC3-14400 (Micron D9GTR)
- Dimm slot #6: 1GB G.Skill PC3-12800HZ (Samsung HCF0)
6x1GB Samsung HCF0 + Micron D9GTR @8-8-8-24 1T at 2.04v bios (2.045v DMM real)
Super Pi 1M = 10.140s
Super Pi 32M failed at 22nd loop @DDR3-1960Mhz 8-8-8-24 1T
![]()
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Thanks for that info. You wouldn't be waiting for these...
*HOT* | Corsair DOMINATOR GT | 6GB (3x2GB) | DDR3-2000 7-8-7-20 @ 1.65V | *HOT*
I've been waiting to see if I will be able to afford these pretty red things.![]()
| Intel Core i7-2600K | ASRock P67 EXTREME4 GEN3 | G.SKILL Sniper Series 8GB (2 x 4GB) DDR3 1866 | EVGA GTS 450 |
| Swiftech APOGEE Drive II CPU Waterblock with Integrated Pump | XSPC RX360 | Swiftech MCP655-B Pump | XSPC Dual 5.25in. Bay Reservoir |
| Thermaltake 850W PSU | NZXT SWITCH 810 | Windows 7 64-bit |
[SIGPIC][/SIGPIC]
What do you think is the max uncore stable on i7 920 stable?
The motherboard is this Dfi and the batch is 3838B079.. The cooling is True + 2x Noiseblocker XL2..
Cumps,
FuRy
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