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Overclocking AMD Phenom ii 840 x4

post #1 of 7
Thread Starter 
I'm new to overclocking processors to begin with. I have this processor up to 3.5 instead of the stock 3.2 but all iv done is raise the ht ref clock. I know I should be able to do more just not sure what and I'm also not sure if the options are available on my motherboard. I have an Asus mb. I've heard of people getting the processor 4 ghz or close. Would like suggestions thanks smile.gif.
post #2 of 7
Hi, you will have to provide more information - what mobo, what voltages and temperatures etc. Maybe fill out your rig specs below so everything knows what hardware you are talking about.
 
13" beast
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CPUMotherboardGraphicsRAM
Lapped X4 940BE @ 3.5Ghz / NB @ 2.4GHz Biostar TA790GX 128M 1GB HD6950 @ 965/1360 (1.26V) Kingston Hyper-X 2GB x 4, 1066 MHz 5-5-5-15-22 ... 
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13" beast
(6 items)
 
HTPC
(8 items)
 
CPUMotherboardGraphicsRAM
Lapped X4 940BE @ 3.5Ghz / NB @ 2.4GHz Biostar TA790GX 128M 1GB HD6950 @ 965/1360 (1.26V) Kingston Hyper-X 2GB x 4, 1066 MHz 5-5-5-15-22 ... 
Hard DriveOptical DriveCoolingOS
Crucial M4 64GB SSD, WD 640GB x 2 none Scythe Katana 3 Win7 64bit 
MonitorKeyboardPowerCase
Dell 24", Samsung 17" x 2 Logitech Illuminated Antec Earthwatts 750W Antec 300 
CPUGraphicsRAMHard Drive
Intel Core i5 2410M @ 2.3 Ghz stock Intel HD Graphics 3000 4GB 500 GB 
OSMonitor
Windows 7 WXGA (1366x768) 
CPUMotherboardGraphicsRAM
Athlon II X2 245 GA-MA785GM-UD2H Onboard HD4200 Kingston 2GB 
Hard DriveOSKeyboardCase
WD 2TB x 2 Windows 7 Ultimate Benq Wireless Antec NSK1480B 
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post #3 of 7
the phenom 2 x4 840 is a propus core....its basically a higher clocked Athlon 2 x4 quad with no l3 cache and a locked multiplier. however its a very good quad core if you can get good at overclocking via the fsb. it would be helpful to know what model of asus motherboard you have and what kind of cooling you have. the standard rules of phenom 2 overclocking do apply minus the locked multiplier. once you know how far you can push the FSB of your mainboard you can roughly figure out how far you can push the chip. remember to keep it below 65 degrees c on the cores. the max safe voltage is no more then 1.55 and that might be pushing it for 24/7/365. for comfort you might consider 1.54 vcore volts your max limit. welcome to a very addictive hobby
 
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Ryzen 7 1700x Gigabyte Auros ax370 gaming 5 gigabyte geforce gtx 1080 ti gaming Crucial Ballistix Tactical ddr4-3000 
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Seagate Barracuda 4TB crucial mx300 m2 Asus dvd rw corsair h100i 
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aoc 2236vw corsair k40 corsair rm750x corsair graphite 760t arctic white 
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Beautiful HoRyzen
(19 items)
 
 
CPUMotherboardGraphicsRAM
Ryzen 7 1700x Gigabyte Auros ax370 gaming 5 gigabyte geforce gtx 1080 ti gaming Crucial Ballistix Tactical ddr4-3000 
Hard DriveHard DriveOptical DriveCooling
Seagate Barracuda 4TB crucial mx300 m2 Asus dvd rw corsair h100i 
CoolingCoolingOSMonitor
corsair af120 corsair af 120 windows 10 pro 64 bit asus vw 246h 
MonitorKeyboardPowerCase
aoc 2236vw corsair k40 corsair rm750x corsair graphite 760t arctic white 
MouseMouse PadAudio
corsair sabre rgb razer vespula altec lansing ocatne 7 
CPUMotherboardGraphicsRAM
Core 2 Duo g72gx-rbbx05 gtx 260m Nanya PC2-6400 
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G Skill 64 GB SSD Western Digital Scorpio Black HL-DVD-RW Windows 7 Home Premium 
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post #4 of 7
Thread Starter 
Sorry about that!

MB- Asus M4A785-M
Gigabyte ATI 6870 video card
6gb of ram ddr2
Basic cooling but cpu stays cool

I'm not sure what fsb is and where the options for it are for my motherboard. Thanks!
post #5 of 7
Great little processor! I've had a lot of fun with mine - http://hwbot.org/submission/2319460_cssorkinmanocn_cpu_frequency_phenom_ii_x4_840_4613.9_mhz

Tends to run cool and clocks up very well - good advice from DT good luck with yours!
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Ryzen Shine!
(14 items)
 
  
CPUMotherboardGraphicsRAM
Ryzen 1800X @ 4125mhz 1.432 Volts MSI X370 Titanium   Fury  G.SKILL TridentZ Series 32GB (4 x 8GB) 288-Pin... 
Hard DriveOptical DriveCoolingOS
Samsung 850 pro Hp 1260 I liquid unobtanium Koolance 480mm radiator, 39... Win 7 HP/Winspy 10 64bit 
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24" hp @ 1900x1200 Logitech G19 PC power and cooling 910 watt silencer Thermaltake P5 
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post #6 of 7
Thread Starter 
That is crazy! Is fsb the same as the ht ref clock? That's what iv been able to change but I don't know what to decrease so I can increase it further. I can't go higher than 3.5 at the moment unfortunately.
post #7 of 7
the FSB=front side bus. the base of that should be 200 on the button. there should be something inside the mainboard bios stating front side bus, which is where you wish to start!
 
Beautiful HoRyzen
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CPUMotherboardGraphicsRAM
Ryzen 7 1700x Gigabyte Auros ax370 gaming 5 gigabyte geforce gtx 1080 ti gaming Crucial Ballistix Tactical ddr4-3000 
Hard DriveHard DriveOptical DriveCooling
Seagate Barracuda 4TB crucial mx300 m2 Asus dvd rw corsair h100i 
CoolingCoolingOSMonitor
corsair af120 corsair af 120 windows 10 pro 64 bit asus vw 246h 
MonitorKeyboardPowerCase
aoc 2236vw corsair k40 corsair rm750x corsair graphite 760t arctic white 
MouseMouse PadAudio
corsair sabre rgb razer vespula altec lansing ocatne 7 
CPUMotherboardGraphicsRAM
Core 2 Duo g72gx-rbbx05 gtx 260m Nanya PC2-6400 
Hard DriveHard DriveOptical DriveOS
G Skill 64 GB SSD Western Digital Scorpio Black HL-DVD-RW Windows 7 Home Premium 
MouseAudio
Razer Lachesis 4000 DPI Onboard Altec Lansing 
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Beautiful HoRyzen
(19 items)
 
 
CPUMotherboardGraphicsRAM
Ryzen 7 1700x Gigabyte Auros ax370 gaming 5 gigabyte geforce gtx 1080 ti gaming Crucial Ballistix Tactical ddr4-3000 
Hard DriveHard DriveOptical DriveCooling
Seagate Barracuda 4TB crucial mx300 m2 Asus dvd rw corsair h100i 
CoolingCoolingOSMonitor
corsair af120 corsair af 120 windows 10 pro 64 bit asus vw 246h 
MonitorKeyboardPowerCase
aoc 2236vw corsair k40 corsair rm750x corsair graphite 760t arctic white 
MouseMouse PadAudio
corsair sabre rgb razer vespula altec lansing ocatne 7 
CPUMotherboardGraphicsRAM
Core 2 Duo g72gx-rbbx05 gtx 260m Nanya PC2-6400 
Hard DriveHard DriveOptical DriveOS
G Skill 64 GB SSD Western Digital Scorpio Black HL-DVD-RW Windows 7 Home Premium 
MouseAudio
Razer Lachesis 4000 DPI Onboard Altec Lansing 
  hide details  
Reply
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