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Reached Limit for Athlon II X4 640?

post #1 of 11
Thread Starter 
I just got the Xigmatek DK, which is a drastic improvement from the stock HSF. I was able to up the O.C. to 3.5 GHz (not tested for long-term stability) from 3.3 GHz stock HSF.

I can't get it to 3.6 GHz no matter what I do (increase voltages to CPU and NB/CPU, decreasing RAM & HT Link Freq., etc). Has my CPU reached the limit, or is my MOBO limiting the O.C.?

I know the Athlon II 640 is not a great overclocker, but my MOBO only has a 4+1 powerphase (I bought it on accident, thinking it was the EVO under the same model number and price).

This is kind of random, but I noticed that the CPU was actually rough around the edges (like the metal slightly melted) when I was seating the DK. I didn't notice that it was like this when I bought it new. Did my O.C. using the stock HSF cause this melting? Does it have a negative affect on the CPU's performance?
Ol' Betsy
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Ol' Betsy
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post #2 of 11
u have reached limit but u may need a second opinion, i hit a wall at 3.3 on mine...
post #3 of 11
You reached the limit
post #4 of 11
Nope that is quite normal.

I hit a wall at 3.5ghz on mine as well no matter what settings I use or try it will bsod.

I even had to drop the multi down to 14 to get to 3500mhz because at 14.5 and 3625mhz it will bsod no matter what voltage I use.
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X79
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First build ever
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LGA 775
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post #5 of 11
well then there u go, also i see 2 charlies here
post #6 of 11
My friend also hit a limit ta 3.5Ghz.
Try lowering the RAM multi, see what happens; if it's not CPU holding you back, it could be the 1333 RAM...
post #7 of 11
my buddy got to 3.8 on his i can ask him or u can pm him urself his overclock name is draganus
    
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post #8 of 11
Thread Starter 
Quote:
Originally Posted by xd_1771 View Post
My friend also hit a limit ta 3.5Ghz.
Try lowering the RAM multi, see what happens; if it's not CPU holding you back, it could be the 1333 RAM...
Yea, I tried that to no avail.

Ain't that a B. I bought this CPU because of all the reviews it got from Newegg. I guess that shows how much those reviewers know about tech. If I would have known about this, I would bought the Phenom II X4 840 for the same price (which was my initial plan).

XD, since you are the MOBO guru: Will my MOBO be able to run an overlocked Phenom II X6 without killing Ol' Betsy? I'm really don't know much about VRMs.
Ol' Betsy
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Ol' Betsy
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Hard DriveHard DriveOptical DriveCooling
Corsair Force GT 120GB Samsung Spinpoint 320GB LiteOn DVD Burner Noctua NH-D14 (Lapped) 
CoolingCoolingOSMonitor
4x140mm Cooler Master R4-S4S-10AK-GP (Case Fans) Stock Case Fans: 4x120mm, 1x180mm Windows 7 Home Premium 64bit Dell ST2210B 21.5" 1080P 
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post #9 of 11
Quote:
Originally Posted by charlie310 View Post
Yea, I tried that to no avail.

Ain't that a B. I bought this CPU because of all the reviews it got from Newegg. I guess that shows how much those reviewers know about tech. If I would have known about this, I would bought the Phenom II X4 840 for the same price (which was my initial plan).

XD, since you are the MOBO guru: Will my MOBO be able to run an overlocked Phenom II X6 without killing Ol' Betsy? I'm really don't know much about VRMs.
Is there something you can't do at 3.5ghz? Or do you just want to hit 4ghz?
X79
(15 items)
 
First build ever
(10 items)
 
LGA 775
(9 items)
 
CPUMotherboardGraphicsRAM
Intel Core i7 3820 @4.3ghz stock volts Asus P9X79 Deluxe Sapphire Xtreme 5830 Crossfire @ 950/1200 16gb G Skill Sniper 2133mhz 
Hard DriveOptical DriveCoolingOS
OCZ Vertex 2 + 1TB WD Caviar Blue (Asus SSD Cac... Lite On DVD RW Noctua NH-D14 SE 2011 Windows 7 Pro 64 
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Hannspree HF237 Razer Black Widow Ultimate Rosewill Xtreme 950w Antec P280  
MouseMouse PadAudio
R.A.T. 7 Ripper XXL Klipsch Pro Media 2.1 (With onboard) 
CPUMotherboardGraphicsRAM
Athlon II X4 635 @ 3.5 on 1.34v GIGABYTE GA-890GPA-UD3H ATI Radeon HD 5770  12gb DDR3 (HyperX & Patriot) 
Hard DriveOptical DriveCoolingOS
500gb WD Caviar Blue Lite On 24x Noctua NH-D14 Windows 7 Pro 64 
PowerCase
Antec Neo Eco 400w NZXT Gamma 
CPUMotherboardGraphicsRAM
e5400 @ 3.6ghz EVGA nForce 750i SLI Galaxy GT240 512mb GDDR5 4gb of g skill DDR2 800 @ 867mhz 
Hard DriveCoolingOSPower
WD Blue 500gb Cooler Master Hyper N520 W7 Pro 64 bit Antec Neo Eco 400w 
Case
Lancool (Lian Li) K7 
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X79
(15 items)
 
First build ever
(10 items)
 
LGA 775
(9 items)
 
CPUMotherboardGraphicsRAM
Intel Core i7 3820 @4.3ghz stock volts Asus P9X79 Deluxe Sapphire Xtreme 5830 Crossfire @ 950/1200 16gb G Skill Sniper 2133mhz 
Hard DriveOptical DriveCoolingOS
OCZ Vertex 2 + 1TB WD Caviar Blue (Asus SSD Cac... Lite On DVD RW Noctua NH-D14 SE 2011 Windows 7 Pro 64 
MonitorKeyboardPowerCase
Hannspree HF237 Razer Black Widow Ultimate Rosewill Xtreme 950w Antec P280  
MouseMouse PadAudio
R.A.T. 7 Ripper XXL Klipsch Pro Media 2.1 (With onboard) 
CPUMotherboardGraphicsRAM
Athlon II X4 635 @ 3.5 on 1.34v GIGABYTE GA-890GPA-UD3H ATI Radeon HD 5770  12gb DDR3 (HyperX & Patriot) 
Hard DriveOptical DriveCoolingOS
500gb WD Caviar Blue Lite On 24x Noctua NH-D14 Windows 7 Pro 64 
PowerCase
Antec Neo Eco 400w NZXT Gamma 
CPUMotherboardGraphicsRAM
e5400 @ 3.6ghz EVGA nForce 750i SLI Galaxy GT240 512mb GDDR5 4gb of g skill DDR2 800 @ 867mhz 
Hard DriveCoolingOSPower
WD Blue 500gb Cooler Master Hyper N520 W7 Pro 64 bit Antec Neo Eco 400w 
Case
Lancool (Lian Li) K7 
  hide details  
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post #10 of 11
You'll want to add some MOSFET heatsinks to that before overclocking an x6 with a tower cooler... otherwise you'll be running a 4+1 unheatsinked with no airflow which'd be fairly dangerous
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