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Overclocking AMD Athlon II x4 640

post #1 of 5
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I was going to buy a CPU and overclock it, Would I be able to raise the multiplier in Turbo V and raise the Voltage ?

Thanks
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My Gaming Rig
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Intel i5 2500K 4.7GHz [24/7] Gigabyte Z77 ATI Radeon 6950 (XFX) Corsair Vengeance 8GB 1600MHz  
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post #2 of 5
no....you can't raise multiplier like you did with your current chip , it's not a black edition so locked multipliers. However it can still be overclocked using fsb.....just not as easy
easyfps
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easyfps
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post #3 of 5
To raise multiplier you'll need a BE (Black Edition) chip, with an unlocked multi. The X4 640 doesn't have it's multi unlocked, so you'll have to limit yourself to increase FSB and vCore to make it stable. You can reach a good OC with that chip though
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I need upgrades
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Phenom II X6 1090T Foxconn A79A-S PNY GTS450 XLR8 KVR800D2N6/2G 
Hard DriveHard DriveHard DriveHard Drive
WD2500AAKS WD3200AAKS WD10EARS WD3200JB 
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Asus DRW-1608P2 Asus DRW-1608P2 Corsair H70 Ubuntu Server 10.10 x64 
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Windows 7 Professional x64 SP1 ASUS VW193S Logitech EX100 LC-Power 650W 
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post #4 of 5
Overclocking via the FSB yields more performance, because it also raises the Northbridge clock. An x6 at 4GHz with 2GHz NB will lose to a 3.5GHz x6 with 2.5GHz on the NB.
post #5 of 5
Quote:
Originally Posted by linkin93 View Post
Overclocking via the FSB yields more performance, because it also raises the Northbridge clock. An x6 at 4GHz with 2GHz NB will lose to a 3.5GHz x6 with 2.5GHz on the NB.
But there is a multi just for the NB, so you can raise only the multi on the CPU and NB
Messing with FSB also messes with your RAM frequency, and in some cases it won't give you a performance boost, so it's arguable wich is better or worse.
I need upgrades
(21 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II X6 1090T Foxconn A79A-S PNY GTS450 XLR8 KVR800D2N6/2G 
Hard DriveHard DriveHard DriveHard Drive
WD2500AAKS WD3200AAKS WD10EARS WD3200JB 
Optical DriveOptical DriveCoolingOS
Asus DRW-1608P2 Asus DRW-1608P2 Corsair H70 Ubuntu Server 10.10 x64 
OSMonitorKeyboardPower
Windows 7 Professional x64 SP1 ASUS VW193S Logitech EX100 LC-Power 650W 
CaseMouseAudioAudio
Coolermaster Stacker 830 SE Logitech EX100 Creative Audigy 2 ZS Creative i-Trigue L3450 
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I need upgrades
(21 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II X6 1090T Foxconn A79A-S PNY GTS450 XLR8 KVR800D2N6/2G 
Hard DriveHard DriveHard DriveHard Drive
WD2500AAKS WD3200AAKS WD10EARS WD3200JB 
Optical DriveOptical DriveCoolingOS
Asus DRW-1608P2 Asus DRW-1608P2 Corsair H70 Ubuntu Server 10.10 x64 
OSMonitorKeyboardPower
Windows 7 Professional x64 SP1 ASUS VW193S Logitech EX100 LC-Power 650W 
CaseMouseAudioAudio
Coolermaster Stacker 830 SE Logitech EX100 Creative Audigy 2 ZS Creative i-Trigue L3450 
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