Overclock.net › Forums › Intel › Intel CPUs › Help an idiot.... E8400/780i questions.
New Posts  All Forums:Forum Nav:

Help an idiot.... E8400/780i questions. - Page 2

post #11 of 19
I'm glad I'm not the only one (idiot). I can't get above 3.8 on my E8400. To get to 3.8 (9 x 423) I had to boost the Vcore in BIOS to 1.356 (1.344 on CPU idle). I'm very jealous of people who can get to 4.0 (and above) with < 1.3v. I gather your not keen on going over recommended max voltage either.

Going over 1.356 in BIOS on my board (GA-P35-DS3P) the voltage on the CPU does weird things. I can gradually increase the voltage in BIOS and nothing increases on the CPU. I keep going, and then the CPU voltage makes a huge jump to well over the 1.3625 mark. I haven't played with NB or FSB voltage yet because I have no idea what my default voltage is, I only have options to add voltage in my BIOS, nothing to tell me what it is.
Main System
(13 items)
 
  
CPUMotherboardGraphicsRAM
E3120 GA-P35-DS3P Rev 2.1 GV-N26OC-896H 4GB Corsair Dominator 1066 
Hard DriveOptical DriveOSMonitor
WD800JD (80GB) Pioneer 215 Windows Vista Ultimate 64bit Samsung 2493HM 24" 
KeyboardPowerCaseMouse
Dell wireless Antec Neopower 650W CoolerMaster HAF932 Dell wireless 
  hide details  
Reply
Main System
(13 items)
 
  
CPUMotherboardGraphicsRAM
E3120 GA-P35-DS3P Rev 2.1 GV-N26OC-896H 4GB Corsair Dominator 1066 
Hard DriveOptical DriveOSMonitor
WD800JD (80GB) Pioneer 215 Windows Vista Ultimate 64bit Samsung 2493HM 24" 
KeyboardPowerCaseMouse
Dell wireless Antec Neopower 650W CoolerMaster HAF932 Dell wireless 
  hide details  
Reply
post #12 of 19
Quote:
Originally Posted by Technophobe View Post
I'm glad I'm not the only one (idiot). I can't get above 3.8 on my E8400. To get to 3.8 (9 x 423) I had to boost the Vcore in BIOS to 1.356 (1.344 on CPU idle). I'm very jealous of people who can get to 4.0 (and above) with < 1.3v. I gather your not keen on going over recommended max voltage either.

Going over 1.356 in BIOS on my board (GA-P35-DS3P) the voltage on the CPU does weird things. I can gradually increase the voltage in BIOS and nothing increases on the CPU. I keep going, and then the CPU voltage makes a huge jump to well over the 1.3625 mark. I haven't played with NB or FSB voltage yet because I have no idea what my default voltage is, I only have options to add voltage in my BIOS, nothing to tell me what it is.
I'm in the same boat, to get to 4.0Ghz I would have to exceed recommended max voltage, which has been bad news for these chips. 4.0 is just another number, like 3.8, the differences between the two are hardly noticable, so I'm not so broken up about it. If everyone was getting 4.5 at 1.3v on air I might be a little bothered by it.
Foldatron
(17 items)
 
Mat
(10 items)
 
Work iMac
(9 items)
 
CPUMotherboardGraphicsGraphics
i7 950 EVGA x58 3-way SLI EVGA GTX 660ti GTX 275 
RAMHard DriveHard DriveHard Drive
3x2GB Corsair Dominator DDR3-1600 80GB Intel X25-M SSD 2TB WD Black 150GB WD Raptor 
Hard DriveOSMonitorKeyboard
2x 150GB WD V-raptor in RAID0 Win7 Home 64-bit OEM 55" LED 120hz 1080p Vizio MS Natural Ergonomic Keyboard 4000 
PowerCase
750W PC P&C Silencer CoolerMaster 690 
CPUGraphicsRAMHard Drive
Intel Core i5 2500S AMD 6770M 8GB (2x4GB) at 1333Mhz 1TB, 7200 rpm 
Optical DriveOSMonitorKeyboard
LG 8X Dual-Layer "SuperDrive" OS X Lion 27" iMac screen Mac wireless keyboard 
Mouse
Mac wireless mouse 
CPUGraphicsRAMHard Drive
i7-2600K AMD 6970M 1GB 16GB PC3-10600 DDR3 1TB 7200rpm 
Hard DriveOptical DriveOSMonitor
256GB SSD 8x DL "SuperDrive" OS X 10.7 Lion 27" 2560x1440 iMac display 
Monitor
27" Apple thunderbolt display 
  hide details  
Reply
Foldatron
(17 items)
 
Mat
(10 items)
 
Work iMac
(9 items)
 
CPUMotherboardGraphicsGraphics
i7 950 EVGA x58 3-way SLI EVGA GTX 660ti GTX 275 
RAMHard DriveHard DriveHard Drive
3x2GB Corsair Dominator DDR3-1600 80GB Intel X25-M SSD 2TB WD Black 150GB WD Raptor 
Hard DriveOSMonitorKeyboard
2x 150GB WD V-raptor in RAID0 Win7 Home 64-bit OEM 55" LED 120hz 1080p Vizio MS Natural Ergonomic Keyboard 4000 
PowerCase
750W PC P&C Silencer CoolerMaster 690 
CPUGraphicsRAMHard Drive
Intel Core i5 2500S AMD 6770M 8GB (2x4GB) at 1333Mhz 1TB, 7200 rpm 
Optical DriveOSMonitorKeyboard
LG 8X Dual-Layer "SuperDrive" OS X Lion 27" iMac screen Mac wireless keyboard 
Mouse
Mac wireless mouse 
CPUGraphicsRAMHard Drive
i7-2600K AMD 6970M 1GB 16GB PC3-10600 DDR3 1TB 7200rpm 
Hard DriveOptical DriveOSMonitor
256GB SSD 8x DL "SuperDrive" OS X 10.7 Lion 27" 2560x1440 iMac display 
Monitor
27" Apple thunderbolt display 
  hide details  
Reply
post #13 of 19
Thread Starter 
Well.....it looks like the advice here helped.


Seems to be running stable now at 4.05ghz. Linked/synced, FSB 1800. I used these voltages:



Ends up looking like this:



Tried using the exact settings with 1850FSB and it crashed. Probably need to bump the volts a bit more for that. Happy where I'm at now though. Thanks again for the advice! Might be back later for some more if my balls grow bigger.


I'm going to start backing down some of the voltages now and see where 4.0 will stay stable.
    
CPUMotherboardGraphicsRAM
Intel i7 3770K Asus Sabertooth Z77 MSI Twin Frozr HD 7950 OC Corsair Vengence 
Hard DriveCoolingOSMonitor
OCZ Vertex 4  CM Hyper 212 EVO Windows 7 SyncMaster 245BW 
PowerCase
Thermal Take Black Widow 850watt CM Storm Trooper 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Intel i7 3770K Asus Sabertooth Z77 MSI Twin Frozr HD 7950 OC Corsair Vengence 
Hard DriveCoolingOSMonitor
OCZ Vertex 4  CM Hyper 212 EVO Windows 7 SyncMaster 245BW 
PowerCase
Thermal Take Black Widow 850watt CM Storm Trooper 
  hide details  
Reply
post #14 of 19
The reason you were showing 4.5 in 3dMark and 3.0 in CPUZ was the EIST or C1E functions in BIOS. They lower your clocks at idle/less than max load to save power and wear and tear. They interfere with setting up a stable OC, but you can put them back on once you're stable.

I'm impressed that an NVIDIA chipset could even POST with those FSB's without serious Northbridge volts. Remember, FSB is dependent on NB volts, Memory on VDimm, and CPU on Vcore. Figure out how many volts you need for your target FSB with your CPU multi at 6, then return to x9 at a lower FSB and start testing your processor speed.

1.4 is too many volts for 24/7 on an E8400. I wouldn't recommend setting more than 1.36-1.37 in BIOS.
Suzanne
(13 items)
 
  
CPUMotherboardGraphicsRAM
Wolfdale 8400@Stock, 1.1125 Vcore, 1.07 post droop Gigabyte GA-p35-DS3L 8800GT (EVGA) OCZ DDR2 1066 
Hard DriveOptical DriveOSMonitor
Seagate 7200.10 250gb Samsung IDE XP Home SP2B Hanns G 17' 
KeyboardPowerCaseMouse
GE Ps2 PC Power and Cooling 610w NZXT hush (Black) Microsoft optical 
Mouse Pad
None 
  hide details  
Reply
Suzanne
(13 items)
 
  
CPUMotherboardGraphicsRAM
Wolfdale 8400@Stock, 1.1125 Vcore, 1.07 post droop Gigabyte GA-p35-DS3L 8800GT (EVGA) OCZ DDR2 1066 
Hard DriveOptical DriveOSMonitor
Seagate 7200.10 250gb Samsung IDE XP Home SP2B Hanns G 17' 
KeyboardPowerCaseMouse
GE Ps2 PC Power and Cooling 610w NZXT hush (Black) Microsoft optical 
Mouse Pad
None 
  hide details  
Reply
post #15 of 19
Lower your VCore if possible. You're already past Intel's recommended ceiling.
SUGO Reborn
(8 items)
 
   
CPUMotherboardGraphicsRAM
Intel i7-2620M @ 2.7 GHz Sony laptop AMD Radeon HD 6630m + Intel HD Graphics (hybrid) 6 GB DDR3 
Hard DriveOptical DriveOSMonitor
Crucial M4 SSD 16x DVD+/-RW SuperDrive Windows 7 Professional x64 13.3" (1366x768) 
KeyboardPowerCaseMouse
Chiclet keyboard Sony laptop charger Black plastic Trackpad 
  hide details  
Reply
SUGO Reborn
(8 items)
 
   
CPUMotherboardGraphicsRAM
Intel i7-2620M @ 2.7 GHz Sony laptop AMD Radeon HD 6630m + Intel HD Graphics (hybrid) 6 GB DDR3 
Hard DriveOptical DriveOSMonitor
Crucial M4 SSD 16x DVD+/-RW SuperDrive Windows 7 Professional x64 13.3" (1366x768) 
KeyboardPowerCaseMouse
Chiclet keyboard Sony laptop charger Black plastic Trackpad 
  hide details  
Reply
post #16 of 19
Your vcore is high I wouldnt pass 1.35-1.37 in BIOS with these 45nm chips
post #17 of 19
I thought you said you read the 780i overclocking guide?

Your FSB needs to be 1.4v, SPP should be at 1.45 if your are at over 1700QDR, MCP should be 1.525, and lower your HT nforce SPP <-> MCP to 1.25. Make sure your RAM voltages and timings are set to the manufactures specs and enjoy OCing!
Over Budget
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 G0 @ 3.6GHZ(450*8). EVGA 780i A1. EVGA 8800GTS (G92). 2x1GB OCZ PC26400 @ 900mhz/4-4-4-15-1T. 
Hard DriveOptical DriveOSKeyboard
WD Raptor X 150GB, Seagate 7200.11 1TB. Lite-On Lightscribe DVD Burner. XP Pro 32bit/Vista Ultimate 32bit (Dual Boot). Anyware PK-205 Slim. 
PowerCaseMouse
Antec Neo-Link 1.2KW (1 650W, 1 550W). Antec P190. Logitech G9. 
  hide details  
Reply
Over Budget
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 G0 @ 3.6GHZ(450*8). EVGA 780i A1. EVGA 8800GTS (G92). 2x1GB OCZ PC26400 @ 900mhz/4-4-4-15-1T. 
Hard DriveOptical DriveOSKeyboard
WD Raptor X 150GB, Seagate 7200.11 1TB. Lite-On Lightscribe DVD Burner. XP Pro 32bit/Vista Ultimate 32bit (Dual Boot). Anyware PK-205 Slim. 
PowerCaseMouse
Antec Neo-Link 1.2KW (1 650W, 1 550W). Antec P190. Logitech G9. 
  hide details  
Reply
post #18 of 19
Thread Starter 
Quote:
Originally Posted by TREESnoseeds787 View Post
I thought you said you read the 780i overclocking guide?!
Yes....I said I have read a lot of things. Never claimed to have memorized them though. Also established that I'm an idiot with the title. I plan on going back and re-reading things for sure, fine tuning, etc.


BTW, I'll drop the volts, I was using this article for a baseline:
http://www.legionhardware.com/document.php?id=717&p=5

They show 1.4v for 4.0Ghz........I figured that was the functional measurement from CPU-z, not the bios setting. Looks like I was wrong from all the responses.
    
CPUMotherboardGraphicsRAM
Intel i7 3770K Asus Sabertooth Z77 MSI Twin Frozr HD 7950 OC Corsair Vengence 
Hard DriveCoolingOSMonitor
OCZ Vertex 4  CM Hyper 212 EVO Windows 7 SyncMaster 245BW 
PowerCase
Thermal Take Black Widow 850watt CM Storm Trooper 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Intel i7 3770K Asus Sabertooth Z77 MSI Twin Frozr HD 7950 OC Corsair Vengence 
Hard DriveCoolingOSMonitor
OCZ Vertex 4  CM Hyper 212 EVO Windows 7 SyncMaster 245BW 
PowerCase
Thermal Take Black Widow 850watt CM Storm Trooper 
  hide details  
Reply
post #19 of 19
Thread Starter 
Quote:
Originally Posted by Schroedinger View Post
1.4 is too many volts for 24/7 on an E8400. I wouldn't recommend setting more than 1.36-1.37 in BIOS.
This is where I'm getting a little confused. When I set the volts where I did, the bios says "1.36" to the right of my settings. I restarted a couple of times to see if that value would get closer to what I was setting and it stayed at 1.36. I've read about the vdroop once Windows is running....didn't realize there would be that big of a difference in the bios too. Do I go off the "Setting" or the "Current Value"???
    
CPUMotherboardGraphicsRAM
Intel i7 3770K Asus Sabertooth Z77 MSI Twin Frozr HD 7950 OC Corsair Vengence 
Hard DriveCoolingOSMonitor
OCZ Vertex 4  CM Hyper 212 EVO Windows 7 SyncMaster 245BW 
PowerCase
Thermal Take Black Widow 850watt CM Storm Trooper 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Intel i7 3770K Asus Sabertooth Z77 MSI Twin Frozr HD 7950 OC Corsair Vengence 
Hard DriveCoolingOSMonitor
OCZ Vertex 4  CM Hyper 212 EVO Windows 7 SyncMaster 245BW 
PowerCase
Thermal Take Black Widow 850watt CM Storm Trooper 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Intel CPUs
Overclock.net › Forums › Intel › Intel CPUs › Help an idiot.... E8400/780i questions.