Overclock.net › Forums › Intel › Intel CPUs › First overclock I7-950
New Posts  All Forums:Forum Nav:

First overclock I7-950 - Page 3

post #21 of 43
try dropping your cpu vtt voltage, even if it means you need to raise core voltage.
Intel data sheet lists absolute maximum voltages for the 900 series i7 as follows

CPU Core - 1.55
CPU VTT - 1.35

So I would drop that one down and test, you should not need more than 1.30 - 1.32v for 191 bclk...

+150 - 200mV = right around 1.35v on our bios
The Money Pit
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7-950 - 4.24 @ 1.40v Batch #3941B089 EVGA X58 SLI LE MSI 580 GTX Lightning - 950/1900/2200 @ 1.1v 6GB Mushkin @ 1475 - 6-8-6-24 
Hard DriveHard DriveOptical DriveCooling
120GB Vertex Plus 2 x 500GB WD Blues RAID0 Lite-On DVD/CD Custom H20 Loop 
OSMonitorPowerCase
Win 7 Ulti-64 25" I-Inc iH253 Antec TruePower New TP-750 CoolerMaster HAF 932 
  hide details  
Reply
The Money Pit
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7-950 - 4.24 @ 1.40v Batch #3941B089 EVGA X58 SLI LE MSI 580 GTX Lightning - 950/1900/2200 @ 1.1v 6GB Mushkin @ 1475 - 6-8-6-24 
Hard DriveHard DriveOptical DriveCooling
120GB Vertex Plus 2 x 500GB WD Blues RAID0 Lite-On DVD/CD Custom H20 Loop 
OSMonitorPowerCase
Win 7 Ulti-64 25" I-Inc iH253 Antec TruePower New TP-750 CoolerMaster HAF 932 
  hide details  
Reply
post #22 of 43
Thread Starter 
Quote:
Originally Posted by 10acjed View Post
try dropping your cpu vtt voltage, even if it means you need to raise core voltage.
Intel data sheet lists absolute maximum voltages for the 900 series i7 as follows

CPU Core - 1.55
CPU VTT - 1.35

So I would drop that one down and test, you should not need more than 1.30 - 1.32v for 191 bclk...

+150 - 200mV = right around 1.35v on our bios
+1 Thanks bro i will try it, how does everything else look, i want to increase my ram eventually. It is 2000mhz Ram, and only running around 1600mhz
BIG DADDY!!!!!
(13 items)
 
  
CPUMotherboardGraphicsRAM
I7-950 @ 4.0ghz HT EVGA-Classified-3 EVGA GTX-580 6GB Corsair Dom 2000MHZ 
Hard DriveOSMonitorKeyboard
120GB Corsair Force-SSD--2TB-WD-BLACK windows7-HP Lg 24 inch RAZER. BLACKWIDOW ULTIMATE 
PowerCaseMouseMouse Pad
Corsair-AX1200 HAF-X-942 RAZER-LACHESIS-5600 Steelseries QCK 
  hide details  
Reply
BIG DADDY!!!!!
(13 items)
 
  
CPUMotherboardGraphicsRAM
I7-950 @ 4.0ghz HT EVGA-Classified-3 EVGA GTX-580 6GB Corsair Dom 2000MHZ 
Hard DriveOSMonitorKeyboard
120GB Corsair Force-SSD--2TB-WD-BLACK windows7-HP Lg 24 inch RAZER. BLACKWIDOW ULTIMATE 
PowerCaseMouseMouse Pad
Corsair-AX1200 HAF-X-942 RAZER-LACHESIS-5600 Steelseries QCK 
  hide details  
Reply
post #23 of 43
Thread Starter 
Ok , i had to drop my vtt all the way to +0.50mv it was at 0125mv, every time i put it on a load my cpu vtt would jump up past 1.35v (now its cpu vtt 1.32v to 1.33v running prime 95).
BIG DADDY!!!!!
(13 items)
 
  
CPUMotherboardGraphicsRAM
I7-950 @ 4.0ghz HT EVGA-Classified-3 EVGA GTX-580 6GB Corsair Dom 2000MHZ 
Hard DriveOSMonitorKeyboard
120GB Corsair Force-SSD--2TB-WD-BLACK windows7-HP Lg 24 inch RAZER. BLACKWIDOW ULTIMATE 
PowerCaseMouseMouse Pad
Corsair-AX1200 HAF-X-942 RAZER-LACHESIS-5600 Steelseries QCK 
  hide details  
Reply
BIG DADDY!!!!!
(13 items)
 
  
CPUMotherboardGraphicsRAM
I7-950 @ 4.0ghz HT EVGA-Classified-3 EVGA GTX-580 6GB Corsair Dom 2000MHZ 
Hard DriveOSMonitorKeyboard
120GB Corsair Force-SSD--2TB-WD-BLACK windows7-HP Lg 24 inch RAZER. BLACKWIDOW ULTIMATE 
PowerCaseMouseMouse Pad
Corsair-AX1200 HAF-X-942 RAZER-LACHESIS-5600 Steelseries QCK 
  hide details  
Reply
post #24 of 43
Quote:
Originally Posted by MIKEVALL View Post
Ok , i had to drop my vtt all the way to +0.50mv it was at 0125mv, every time i put it on a load my cpu vtt would jump up past 1.35v (now its cpu vtt 1.32v to 1.33v running prime 95).
It seems each board may react differently, mine I think is +150 or +200mV for 1.35v

1.30 - 1.34 is all you should need for up to 200 - 210 bclk. and with the 23 multi that should cover any oc you need
The Money Pit
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7-950 - 4.24 @ 1.40v Batch #3941B089 EVGA X58 SLI LE MSI 580 GTX Lightning - 950/1900/2200 @ 1.1v 6GB Mushkin @ 1475 - 6-8-6-24 
Hard DriveHard DriveOptical DriveCooling
120GB Vertex Plus 2 x 500GB WD Blues RAID0 Lite-On DVD/CD Custom H20 Loop 
OSMonitorPowerCase
Win 7 Ulti-64 25" I-Inc iH253 Antec TruePower New TP-750 CoolerMaster HAF 932 
  hide details  
Reply
The Money Pit
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7-950 - 4.24 @ 1.40v Batch #3941B089 EVGA X58 SLI LE MSI 580 GTX Lightning - 950/1900/2200 @ 1.1v 6GB Mushkin @ 1475 - 6-8-6-24 
Hard DriveHard DriveOptical DriveCooling
120GB Vertex Plus 2 x 500GB WD Blues RAID0 Lite-On DVD/CD Custom H20 Loop 
OSMonitorPowerCase
Win 7 Ulti-64 25" I-Inc iH253 Antec TruePower New TP-750 CoolerMaster HAF 932 
  hide details  
Reply
post #25 of 43
Thread Starter 
Ok well i think i am really close. I have been running prime again for over 8 hrs. Its holding steady. Here are my numbers from E-LEET after 8 hrs of prime95( still running)


CPU-Z

http://valid.canardpc.com/show_oc.php?id=1678833


Freq : 4021.95 MHz (191.52 * 21)



+3.3v---------3.22v
cpu vcore-----1.33v
dram----------1.56v
cpu vtt--------1.32v
nb core-------1.35v
+5v-----------4.96v
+12v----------12.11v
vsb3v---------3.28v
vbat-----------3.18v

Temps at load! ( PRIM 95 + internet + e-leet)

cpu------57.0c
vreg-----73.0c
system--35.0c

core#1--69.0c
core#2--69.0c
core#3--68.0c
core#4--64.0c
BIG DADDY!!!!!
(13 items)
 
  
CPUMotherboardGraphicsRAM
I7-950 @ 4.0ghz HT EVGA-Classified-3 EVGA GTX-580 6GB Corsair Dom 2000MHZ 
Hard DriveOSMonitorKeyboard
120GB Corsair Force-SSD--2TB-WD-BLACK windows7-HP Lg 24 inch RAZER. BLACKWIDOW ULTIMATE 
PowerCaseMouseMouse Pad
Corsair-AX1200 HAF-X-942 RAZER-LACHESIS-5600 Steelseries QCK 
  hide details  
Reply
BIG DADDY!!!!!
(13 items)
 
  
CPUMotherboardGraphicsRAM
I7-950 @ 4.0ghz HT EVGA-Classified-3 EVGA GTX-580 6GB Corsair Dom 2000MHZ 
Hard DriveOSMonitorKeyboard
120GB Corsair Force-SSD--2TB-WD-BLACK windows7-HP Lg 24 inch RAZER. BLACKWIDOW ULTIMATE 
PowerCaseMouseMouse Pad
Corsair-AX1200 HAF-X-942 RAZER-LACHESIS-5600 Steelseries QCK 
  hide details  
Reply
post #26 of 43
If you want 4.2Ghz stabile, set your volt to 1.375. then tweak down the volt to see when it is stabile at its lowest. If you dont get it stabile at 1.375v core then i dont recommend you to rund it at 4,2Ghz 24/7 on a higher volt.. unless you have solid cooling
mas
(13 items)
 
  
OS
Windows 7 Ultimate 64-bit 
  hide details  
Reply
mas
(13 items)
 
  
OS
Windows 7 Ultimate 64-bit 
  hide details  
Reply
post #27 of 43
The data sheet states that the i7 900 series has an absolute maximum cpu core voltage of 1.55v, and vtt core of 1.35v

He has the headroom in voltage, just starting to hit the limit in temps... Although 72 - 75c would be acceptable to me for a HT 4.2 OC
The Money Pit
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7-950 - 4.24 @ 1.40v Batch #3941B089 EVGA X58 SLI LE MSI 580 GTX Lightning - 950/1900/2200 @ 1.1v 6GB Mushkin @ 1475 - 6-8-6-24 
Hard DriveHard DriveOptical DriveCooling
120GB Vertex Plus 2 x 500GB WD Blues RAID0 Lite-On DVD/CD Custom H20 Loop 
OSMonitorPowerCase
Win 7 Ulti-64 25" I-Inc iH253 Antec TruePower New TP-750 CoolerMaster HAF 932 
  hide details  
Reply
The Money Pit
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7-950 - 4.24 @ 1.40v Batch #3941B089 EVGA X58 SLI LE MSI 580 GTX Lightning - 950/1900/2200 @ 1.1v 6GB Mushkin @ 1475 - 6-8-6-24 
Hard DriveHard DriveOptical DriveCooling
120GB Vertex Plus 2 x 500GB WD Blues RAID0 Lite-On DVD/CD Custom H20 Loop 
OSMonitorPowerCase
Win 7 Ulti-64 25" I-Inc iH253 Antec TruePower New TP-750 CoolerMaster HAF 932 
  hide details  
Reply
post #28 of 43
Quote:
Originally Posted by 10acjed View Post
The data sheet states that the i7 900 series has an absolute maximum cpu core voltage of 1.55v, and vtt core of 1.35v

He has the headroom in voltage, just starting to hit the limit in temps... Although 72 - 75c would be acceptable to me for a HT 4.2 OC
Agreed.

Those maximums though, I treat as 24/7 maximums. If you are using slow mode (12x) to get a high bclk, you use a silly qpi and dram volts briefly, also ram running at 2000MHz (and maybe with tight timings or with 12 or 24 GB of it) can want more qpi than intel recommend. Intel's AUTO settings can jack qpi up past 1.4v too .... Overclocks on AUTO, sheesh. Bad idea.

My 4.3GHz uses 1.40625v bios. Still waiting for the "phut" noise.
Edited by alancsalt - 2/25/11 at 9:02pm
Nyarlathotep
(17 items)
 
Cxaxukluth
(19 items)
 
Yog-Sothoth
(10 items)
 
CPUMotherboardGraphicsRAM
Intel Core i7 3970X ASUS X79 ROG Rampage IV Extreme Bios 2105 EVGA KingPin Classified 780 Ti 3GB Tri-SLI  G.Skill Trident X F3-2400C10Q-16GTX 16GB (... 
Hard DriveHard DriveOptical DriveCooling
OCZ Vertex 4 SSD Seagate Barracuda 1TB ST31000524AS Lite-On IHAS124 24X DVDRW 3 x XSPC Rasa 750 RX360 Universal CPU Water Coo... 
CoolingOSMonitorPower
3 x EK-FC780 GTX Classy - Nickel Windows 7 Professional x64 3 x Dell U2412M SilverStone 1500W V2.2 x 2 
Case
Lian Li Pitstop T60 Testbench 
CPUMotherboardGraphicsRAM
i7 - 5960X Asus Rampage Extreme V Gigabyte Titan X 12GB G.SKILL Ripjaws 4 series 16GB (4 x 4GB) 288-Pin... 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 850 Pro Series 1TB SSD 3 x Seagate 2TB  Seagate 3TB LG 
CoolingCoolingOSMonitor
Phobya Xtreme 1260 Radiator XSPC D5 Photon 170 Reservoir/Pump Combo Microsoft Windows 7 Professional 64bit with SP1  Samsung S34E790C 34in Ultrawide Curved LED Mo... 
KeyboardPowerCaseMouse
Microsoft Wireless 3000 Silverstone ST1500 Antec Eleven Hundred Microsoft Wireless 3000 
AudioAudioAudio
Audioengine D1 Premium 24-Bit DAC Audioengine 5+ Premium Powered Speakers Black Audioengine S8 Black 
CPUMotherboardGraphicsRAM
i7 3960X Asus Rampage IV Extreme Gainward "GOOD" GTX 580 x 2 AData x 2 
Hard DriveCoolingCoolingOS
Seagate XSPC Rasa EX 360 crossflow kit x 2, XSPC Rasa E... EK GW-580 Waterblocks Win 7 Pro 
PowerCase
SilverStone Strider ST1500 InWin D Frame 
  hide details  
Reply
Nyarlathotep
(17 items)
 
Cxaxukluth
(19 items)
 
Yog-Sothoth
(10 items)
 
CPUMotherboardGraphicsRAM
Intel Core i7 3970X ASUS X79 ROG Rampage IV Extreme Bios 2105 EVGA KingPin Classified 780 Ti 3GB Tri-SLI  G.Skill Trident X F3-2400C10Q-16GTX 16GB (... 
Hard DriveHard DriveOptical DriveCooling
OCZ Vertex 4 SSD Seagate Barracuda 1TB ST31000524AS Lite-On IHAS124 24X DVDRW 3 x XSPC Rasa 750 RX360 Universal CPU Water Coo... 
CoolingOSMonitorPower
3 x EK-FC780 GTX Classy - Nickel Windows 7 Professional x64 3 x Dell U2412M SilverStone 1500W V2.2 x 2 
Case
Lian Li Pitstop T60 Testbench 
CPUMotherboardGraphicsRAM
i7 - 5960X Asus Rampage Extreme V Gigabyte Titan X 12GB G.SKILL Ripjaws 4 series 16GB (4 x 4GB) 288-Pin... 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 850 Pro Series 1TB SSD 3 x Seagate 2TB  Seagate 3TB LG 
CoolingCoolingOSMonitor
Phobya Xtreme 1260 Radiator XSPC D5 Photon 170 Reservoir/Pump Combo Microsoft Windows 7 Professional 64bit with SP1  Samsung S34E790C 34in Ultrawide Curved LED Mo... 
KeyboardPowerCaseMouse
Microsoft Wireless 3000 Silverstone ST1500 Antec Eleven Hundred Microsoft Wireless 3000 
AudioAudioAudio
Audioengine D1 Premium 24-Bit DAC Audioengine 5+ Premium Powered Speakers Black Audioengine S8 Black 
CPUMotherboardGraphicsRAM
i7 3960X Asus Rampage IV Extreme Gainward "GOOD" GTX 580 x 2 AData x 2 
Hard DriveCoolingCoolingOS
Seagate XSPC Rasa EX 360 crossflow kit x 2, XSPC Rasa E... EK GW-580 Waterblocks Win 7 Pro 
PowerCase
SilverStone Strider ST1500 InWin D Frame 
  hide details  
Reply
post #29 of 43
Quote:
Originally Posted by alancsalt View Post

My 4.3GHz uses 1.40625v bios. Still waiting for the "phut" noise.
Wont happen, intel is pretty stingey even on those sheets. I mean thermal shutdown is 100c on most cpu's, yet max temps have been 72c....

If max is 72, why would they configure it to run all the way up to 90 - 95c before throttling down?

That doesnt mean I recommend running 1.55v @ 85c, but it does mean that you dont need to be standing by with a fire extinguisher because your running 1.45v @ 72c

I am pretty stingey myself... Right now I am looking like I need 1.39 - 1.40v load to get past 4.0, yet my 4.0 setting is stable at 1.352v load....

.05v for 200MHz? May not be worth it in the end...
The Money Pit
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7-950 - 4.24 @ 1.40v Batch #3941B089 EVGA X58 SLI LE MSI 580 GTX Lightning - 950/1900/2200 @ 1.1v 6GB Mushkin @ 1475 - 6-8-6-24 
Hard DriveHard DriveOptical DriveCooling
120GB Vertex Plus 2 x 500GB WD Blues RAID0 Lite-On DVD/CD Custom H20 Loop 
OSMonitorPowerCase
Win 7 Ulti-64 25" I-Inc iH253 Antec TruePower New TP-750 CoolerMaster HAF 932 
  hide details  
Reply
The Money Pit
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7-950 - 4.24 @ 1.40v Batch #3941B089 EVGA X58 SLI LE MSI 580 GTX Lightning - 950/1900/2200 @ 1.1v 6GB Mushkin @ 1475 - 6-8-6-24 
Hard DriveHard DriveOptical DriveCooling
120GB Vertex Plus 2 x 500GB WD Blues RAID0 Lite-On DVD/CD Custom H20 Loop 
OSMonitorPowerCase
Win 7 Ulti-64 25" I-Inc iH253 Antec TruePower New TP-750 CoolerMaster HAF 932 
  hide details  
Reply
post #30 of 43
Eggsackerly!

That .05 doesn't sound unusual, but OCN is mostly all about the quick validation, not stability. If you only want a 24/7, that's a choice you make.
Nyarlathotep
(17 items)
 
Cxaxukluth
(19 items)
 
Yog-Sothoth
(10 items)
 
CPUMotherboardGraphicsRAM
Intel Core i7 3970X ASUS X79 ROG Rampage IV Extreme Bios 2105 EVGA KingPin Classified 780 Ti 3GB Tri-SLI  G.Skill Trident X F3-2400C10Q-16GTX 16GB (... 
Hard DriveHard DriveOptical DriveCooling
OCZ Vertex 4 SSD Seagate Barracuda 1TB ST31000524AS Lite-On IHAS124 24X DVDRW 3 x XSPC Rasa 750 RX360 Universal CPU Water Coo... 
CoolingOSMonitorPower
3 x EK-FC780 GTX Classy - Nickel Windows 7 Professional x64 3 x Dell U2412M SilverStone 1500W V2.2 x 2 
Case
Lian Li Pitstop T60 Testbench 
CPUMotherboardGraphicsRAM
i7 - 5960X Asus Rampage Extreme V Gigabyte Titan X 12GB G.SKILL Ripjaws 4 series 16GB (4 x 4GB) 288-Pin... 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 850 Pro Series 1TB SSD 3 x Seagate 2TB  Seagate 3TB LG 
CoolingCoolingOSMonitor
Phobya Xtreme 1260 Radiator XSPC D5 Photon 170 Reservoir/Pump Combo Microsoft Windows 7 Professional 64bit with SP1  Samsung S34E790C 34in Ultrawide Curved LED Mo... 
KeyboardPowerCaseMouse
Microsoft Wireless 3000 Silverstone ST1500 Antec Eleven Hundred Microsoft Wireless 3000 
AudioAudioAudio
Audioengine D1 Premium 24-Bit DAC Audioengine 5+ Premium Powered Speakers Black Audioengine S8 Black 
CPUMotherboardGraphicsRAM
i7 3960X Asus Rampage IV Extreme Gainward "GOOD" GTX 580 x 2 AData x 2 
Hard DriveCoolingCoolingOS
Seagate XSPC Rasa EX 360 crossflow kit x 2, XSPC Rasa E... EK GW-580 Waterblocks Win 7 Pro 
PowerCase
SilverStone Strider ST1500 InWin D Frame 
  hide details  
Reply
Nyarlathotep
(17 items)
 
Cxaxukluth
(19 items)
 
Yog-Sothoth
(10 items)
 
CPUMotherboardGraphicsRAM
Intel Core i7 3970X ASUS X79 ROG Rampage IV Extreme Bios 2105 EVGA KingPin Classified 780 Ti 3GB Tri-SLI  G.Skill Trident X F3-2400C10Q-16GTX 16GB (... 
Hard DriveHard DriveOptical DriveCooling
OCZ Vertex 4 SSD Seagate Barracuda 1TB ST31000524AS Lite-On IHAS124 24X DVDRW 3 x XSPC Rasa 750 RX360 Universal CPU Water Coo... 
CoolingOSMonitorPower
3 x EK-FC780 GTX Classy - Nickel Windows 7 Professional x64 3 x Dell U2412M SilverStone 1500W V2.2 x 2 
Case
Lian Li Pitstop T60 Testbench 
CPUMotherboardGraphicsRAM
i7 - 5960X Asus Rampage Extreme V Gigabyte Titan X 12GB G.SKILL Ripjaws 4 series 16GB (4 x 4GB) 288-Pin... 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 850 Pro Series 1TB SSD 3 x Seagate 2TB  Seagate 3TB LG 
CoolingCoolingOSMonitor
Phobya Xtreme 1260 Radiator XSPC D5 Photon 170 Reservoir/Pump Combo Microsoft Windows 7 Professional 64bit with SP1  Samsung S34E790C 34in Ultrawide Curved LED Mo... 
KeyboardPowerCaseMouse
Microsoft Wireless 3000 Silverstone ST1500 Antec Eleven Hundred Microsoft Wireless 3000 
AudioAudioAudio
Audioengine D1 Premium 24-Bit DAC Audioengine 5+ Premium Powered Speakers Black Audioengine S8 Black 
CPUMotherboardGraphicsRAM
i7 3960X Asus Rampage IV Extreme Gainward "GOOD" GTX 580 x 2 AData x 2 
Hard DriveCoolingCoolingOS
Seagate XSPC Rasa EX 360 crossflow kit x 2, XSPC Rasa E... EK GW-580 Waterblocks Win 7 Pro 
PowerCase
SilverStone Strider ST1500 InWin D Frame 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Intel CPUs
Overclock.net › Forums › Intel › Intel CPUs › First overclock I7-950