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Overclocking CPU Q8400 on Asus P5P43TD PRO

post #1 of 6
Thread Starter 
I am a newbie when it comes to overclocking but in my defense I did a fair amount of reading on this topic. I thought I should try to overclock my trusty Q8400 CPU to squeeze a bit more performance out of it.

The multiplier range is only 6-8 so I don't have much choice there so I went ahead and boosted the FSB from the standard 333 way up to 400. I set the PCI-E to 100 as suggested in all guides and I left EVERYTHING ELSE on AUTO.

The CPU went from its standard 2.66GHz up to a whooping 3.22GHz. Everything seems to be running normal, no weird stuff going on, I even tested with Prime95. Is overclocking this easy, no messing with scary voltages or anything? Am I missing something or what's the catch?

P.S.: The only different thing that I noticed is that my RAM went automatically from its previous 1333Mhz with 9-9-9-24 timings to 801Mhz with 6-6-6-18 timings. The FSB to DRAM ratio is now 1:1 (previously it was 1:2 as reported by CPU-Z). Is this a bad thing if the RAM is now much slower?
post #2 of 6
I am amazed at how popular S775 platform is even though it's been dead since 2009.

Okay. You have got a budget motherboard that was meant to be overclocked up to 1600 MHz rated FSB or not be overclocked at all. Your chipset is a low binned version of the P45. It too doesn't overclock well. We don't know what kind of memory you have got. Memory is very important in S775 overclocking.

In addition, you did not tell us whether you are using a stock fan or an aftermarket cooler? If you are using a stock fan your overclock is going to be limited by the generated heat.

Before we start overclocking, I want you to install the latest BIOS for your motherboard. That means you might have to flash your BIOS to the latest ASUS version. It is also a good idea to clean your case thoroughly and make sure that the filters are free of dust.

Try these settings (ignore any settings which are not present in your motherboard):

AI OVERCLOCK TUNER: MANUAL
CPU RATIO SETTING: 8
FSB FREQUENCY: 430
PCIE FREQ: 101
FSB STRAP TO NB: *SELECT THE APPROPRIATE FREQUENCY SO THAT YOUR DRAM FREQUENCY BELOW READS 860*
DRAM FREQ: 860 (AUTO INPUT BY SELECTING THE APPROPRIATE STRAP ABOVE)
DRAM STATIC READ CTRL: DISABLED
DRAM READ TRAINING: DISABLED
MEM OC CHARGER: ENABLED
AI CLOCK TWISTER: LIGHTER
AI TRANSACTION BOOSTER: AUTO
CPU VOLTAGE: 1.40
CPU GTL VOLT REF 0/2: AUTO
CPU GTL VOLT REF 1/3: AUTO
CPU PLL VOLTAGE: 1.60
FSB TERMINATION VOLTAGE: 1.36
DRAM VOLTAGE: 2.10
NB VOLTAGE: 1.50
NB GTL REF: AUTO
SB VOLTAGE: AUTO
PCIE SATA VOLTAGE: AUTO
LOAD LINE CALIBRATION: ENABLED
CPU SPREAD SPECTRUM: DISABLED
PCIE SPREAD SPECTRUM: DISABLED
CPU CLOCK SKEW: NORMAL
NB CLOCK SKEW: NORMAL
CPU MARGIN ENHANCEMENT: PERFORMANCE MODE

Leave everything else on auto.
=========================================================================================================================================

DIsable C1E and also disable speed step technology and virtualization technology.

With your current overclock of 400 FSB, you are at 1600 MHz Rated FSB. The latter is the manufacturer's limit for your motherboard. It is possible that your motherboard will limit you to around 430ish FSB. You have got to try and see how far you can go through trial and error.

P.S: If you do not have an aftermarket cooler, I do not recommend overclocking any further than your present overclock of 400 MHz FSB.
Edited by Arxontas - 11/18/13 at 1:57am
QX 9650: Retired
(17 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core 2 Extreme QX9650 Asus P5Q DELUXE Gigabyte NVIDIA GeForce GTX 580 Super Overclock GSKILL Trident Extreme Performance Memory F2-88... 
RAMRAMRAMHard Drive
GSKILL Trident Extreme Performance Memory F2-88... GSKILL Trident Extreme Performance Memory F2-88... GSKILL Trident Extreme Performance Memory F2-88... Western Digital Caviar Blue 
Hard DriveCoolingOSMonitor
Western Digital Caviar Blue Thermaltake Frio Overclock King Windows 7 Professional  Philips FTV 32PFL5605H, 32'' 
KeyboardPowerCaseMouse
Microsoft Comfort Curve Silverstone Strider Gold, 850W Cooler Master Cosmos RC 1000 Microsoft Intelli Mouse 
Audio
SoundBlaster Audigy 
CPUMotherboardGraphicsRAM
Intel® Core™ i7-4770K Processor Asus Maximus VI Hero Gigabyte GTX 780 ti GHz edition G.SKILL ARES F3-2400C11Q-32GAB 
Hard DriveHard DriveHard DriveHard Drive
WD Blue 6TB Desktop Hard Disk Drive WD Blue 6TB Desktop Hard Disk Drive Samsung 840 Evo 500 GB Samsung 750 Evo 120 GB 
Optical DriveCoolingOSMonitor
LG GDR-H30N DVD-ROM DRIVE Thermaltake Frio Overclock King Windows 7 Professional  Acer Predator X34 
KeyboardPowerCaseMouse
Microsoft Comfort Curve Silverstone Strider Gold, 850W Corsair 780T Microsoft Intelli Mouse 
CPUMotherboardGraphicsRAM
Pentium 4 Northwood@3.06 GHz with HT Single Cor... Intel 845 PE Brookdale based Toshiba BTR80 on T... Nvidia GeForce4 460 Go DDR1 1GB 
RAMHard DriveOS
DDR1 1GB Western Digital Scorpio Blue WD2500BEVE 250GB Windows XP 32bit Home Edition 
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QX 9650: Retired
(17 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core 2 Extreme QX9650 Asus P5Q DELUXE Gigabyte NVIDIA GeForce GTX 580 Super Overclock GSKILL Trident Extreme Performance Memory F2-88... 
RAMRAMRAMHard Drive
GSKILL Trident Extreme Performance Memory F2-88... GSKILL Trident Extreme Performance Memory F2-88... GSKILL Trident Extreme Performance Memory F2-88... Western Digital Caviar Blue 
Hard DriveCoolingOSMonitor
Western Digital Caviar Blue Thermaltake Frio Overclock King Windows 7 Professional  Philips FTV 32PFL5605H, 32'' 
KeyboardPowerCaseMouse
Microsoft Comfort Curve Silverstone Strider Gold, 850W Cooler Master Cosmos RC 1000 Microsoft Intelli Mouse 
Audio
SoundBlaster Audigy 
CPUMotherboardGraphicsRAM
Intel® Core™ i7-4770K Processor Asus Maximus VI Hero Gigabyte GTX 780 ti GHz edition G.SKILL ARES F3-2400C11Q-32GAB 
Hard DriveHard DriveHard DriveHard Drive
WD Blue 6TB Desktop Hard Disk Drive WD Blue 6TB Desktop Hard Disk Drive Samsung 840 Evo 500 GB Samsung 750 Evo 120 GB 
Optical DriveCoolingOSMonitor
LG GDR-H30N DVD-ROM DRIVE Thermaltake Frio Overclock King Windows 7 Professional  Acer Predator X34 
KeyboardPowerCaseMouse
Microsoft Comfort Curve Silverstone Strider Gold, 850W Corsair 780T Microsoft Intelli Mouse 
CPUMotherboardGraphicsRAM
Pentium 4 Northwood@3.06 GHz with HT Single Cor... Intel 845 PE Brookdale based Toshiba BTR80 on T... Nvidia GeForce4 460 Go DDR1 1GB 
RAMHard DriveOS
DDR1 1GB Western Digital Scorpio Blue WD2500BEVE 250GB Windows XP 32bit Home Edition 
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post #3 of 6
Thread Starter 
I already have the latest BIOS version. The installed memory is 2 x 2048 (kit of 2) Kingston Value RAM at 1333Mhz. I tried overclocking it at 1600Mhz to get 1:2 FSB to DRAM ratio but sometimes the computer freezes (quite rarely). It seems to be very stable with the RAM at 800Mhz and 1:1 FSB to DRAM ratio. I'm quite happy with these settings and I don't see why I should try to push things even further even if I do have an aftermarket cooler. Also I like to keep SpeedStep enabled, it seems to be very helpful without a visible impact on performance...
post #4 of 6
I misunderstood. I thought you were interested in overclocking further.

As to the rest, you have got the slowest and cheapest Yorkfield CPU. Your CPU is so slow, that memory speed is irrelevant. At such low performance levels, memory speed hardly makes a difference and the difference it does make is something not even worth mention.

Your PC freezes b/c you are trying to overclock your cheap and low quality RAM beyond its specs without increasing its voltage or the northbridge voltage.

With respect to Speed StepI disagree. It is a useless tech (alongwith C1E) and the only thing it does is reduce a CPU's overclock potential. Ofc, it is helpful for people with budget/cheap PC's and cases in reducing temperature when idle and cpu power consumption, although your low-end CPU already consumes so little power that the Speed Step savings are insignificant. probably in the vicinity of 5W per day, i.e. 0,005 KW/hr.

At this rate of power savings with Speed Step, you would save 1.825 KW/Hr per year by keeping it on provided that you use your PC every single day. That would be probably around $2-$3 depending on the price of electricity chez vous.
QX 9650: Retired
(17 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core 2 Extreme QX9650 Asus P5Q DELUXE Gigabyte NVIDIA GeForce GTX 580 Super Overclock GSKILL Trident Extreme Performance Memory F2-88... 
RAMRAMRAMHard Drive
GSKILL Trident Extreme Performance Memory F2-88... GSKILL Trident Extreme Performance Memory F2-88... GSKILL Trident Extreme Performance Memory F2-88... Western Digital Caviar Blue 
Hard DriveCoolingOSMonitor
Western Digital Caviar Blue Thermaltake Frio Overclock King Windows 7 Professional  Philips FTV 32PFL5605H, 32'' 
KeyboardPowerCaseMouse
Microsoft Comfort Curve Silverstone Strider Gold, 850W Cooler Master Cosmos RC 1000 Microsoft Intelli Mouse 
Audio
SoundBlaster Audigy 
CPUMotherboardGraphicsRAM
Intel® Core™ i7-4770K Processor Asus Maximus VI Hero Gigabyte GTX 780 ti GHz edition G.SKILL ARES F3-2400C11Q-32GAB 
Hard DriveHard DriveHard DriveHard Drive
WD Blue 6TB Desktop Hard Disk Drive WD Blue 6TB Desktop Hard Disk Drive Samsung 840 Evo 500 GB Samsung 750 Evo 120 GB 
Optical DriveCoolingOSMonitor
LG GDR-H30N DVD-ROM DRIVE Thermaltake Frio Overclock King Windows 7 Professional  Acer Predator X34 
KeyboardPowerCaseMouse
Microsoft Comfort Curve Silverstone Strider Gold, 850W Corsair 780T Microsoft Intelli Mouse 
CPUMotherboardGraphicsRAM
Pentium 4 Northwood@3.06 GHz with HT Single Cor... Intel 845 PE Brookdale based Toshiba BTR80 on T... Nvidia GeForce4 460 Go DDR1 1GB 
RAMHard DriveOS
DDR1 1GB Western Digital Scorpio Blue WD2500BEVE 250GB Windows XP 32bit Home Edition 
  hide details  
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QX 9650: Retired
(17 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core 2 Extreme QX9650 Asus P5Q DELUXE Gigabyte NVIDIA GeForce GTX 580 Super Overclock GSKILL Trident Extreme Performance Memory F2-88... 
RAMRAMRAMHard Drive
GSKILL Trident Extreme Performance Memory F2-88... GSKILL Trident Extreme Performance Memory F2-88... GSKILL Trident Extreme Performance Memory F2-88... Western Digital Caviar Blue 
Hard DriveCoolingOSMonitor
Western Digital Caviar Blue Thermaltake Frio Overclock King Windows 7 Professional  Philips FTV 32PFL5605H, 32'' 
KeyboardPowerCaseMouse
Microsoft Comfort Curve Silverstone Strider Gold, 850W Cooler Master Cosmos RC 1000 Microsoft Intelli Mouse 
Audio
SoundBlaster Audigy 
CPUMotherboardGraphicsRAM
Intel® Core™ i7-4770K Processor Asus Maximus VI Hero Gigabyte GTX 780 ti GHz edition G.SKILL ARES F3-2400C11Q-32GAB 
Hard DriveHard DriveHard DriveHard Drive
WD Blue 6TB Desktop Hard Disk Drive WD Blue 6TB Desktop Hard Disk Drive Samsung 840 Evo 500 GB Samsung 750 Evo 120 GB 
Optical DriveCoolingOSMonitor
LG GDR-H30N DVD-ROM DRIVE Thermaltake Frio Overclock King Windows 7 Professional  Acer Predator X34 
KeyboardPowerCaseMouse
Microsoft Comfort Curve Silverstone Strider Gold, 850W Corsair 780T Microsoft Intelli Mouse 
CPUMotherboardGraphicsRAM
Pentium 4 Northwood@3.06 GHz with HT Single Cor... Intel 845 PE Brookdale based Toshiba BTR80 on T... Nvidia GeForce4 460 Go DDR1 1GB 
RAMHard DriveOS
DDR1 1GB Western Digital Scorpio Blue WD2500BEVE 250GB Windows XP 32bit Home Edition 
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post #5 of 6
Thread Starter 
Thanks for your help so far! In your opinion what voltage should I apply to the NB and RAM to make my cheap memory run stable at 1600Mhz? As far as I can see in BIOS the NB only goes from 1.10V to 1.25v (currently on Auto) and the "Memory Over Voltage" setting goes up from 1.5v in increments of 0.015v (currently on Auto)... Would 1.2v for the NB and 1.575v for RAM do the trick?
post #6 of 6
No problem.

Maximum voltage for DDR3 memory for 24/7 use is 2.00 Volts. As for your NB, it can probably take up to 1.5V for 24/7.

Personally I use 1.58V on my NB but my board is specifically designed for overclocking and uses a more expensive and better quality chipset as well as a large heatsink to help with heat dissipation.

Your RAM is rated for 1333 MHz, so to get to 1600 MHz it would require a lot of voltage since it's the cheap "value" variety. Start from 1.8V Memory voltage and work your way upwards. It is possible that you may never reach 1600 MHz stable though due to the fact that your NB is voltage limited.
QX 9650: Retired
(17 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core 2 Extreme QX9650 Asus P5Q DELUXE Gigabyte NVIDIA GeForce GTX 580 Super Overclock GSKILL Trident Extreme Performance Memory F2-88... 
RAMRAMRAMHard Drive
GSKILL Trident Extreme Performance Memory F2-88... GSKILL Trident Extreme Performance Memory F2-88... GSKILL Trident Extreme Performance Memory F2-88... Western Digital Caviar Blue 
Hard DriveCoolingOSMonitor
Western Digital Caviar Blue Thermaltake Frio Overclock King Windows 7 Professional  Philips FTV 32PFL5605H, 32'' 
KeyboardPowerCaseMouse
Microsoft Comfort Curve Silverstone Strider Gold, 850W Cooler Master Cosmos RC 1000 Microsoft Intelli Mouse 
Audio
SoundBlaster Audigy 
CPUMotherboardGraphicsRAM
Intel® Core™ i7-4770K Processor Asus Maximus VI Hero Gigabyte GTX 780 ti GHz edition G.SKILL ARES F3-2400C11Q-32GAB 
Hard DriveHard DriveHard DriveHard Drive
WD Blue 6TB Desktop Hard Disk Drive WD Blue 6TB Desktop Hard Disk Drive Samsung 840 Evo 500 GB Samsung 750 Evo 120 GB 
Optical DriveCoolingOSMonitor
LG GDR-H30N DVD-ROM DRIVE Thermaltake Frio Overclock King Windows 7 Professional  Acer Predator X34 
KeyboardPowerCaseMouse
Microsoft Comfort Curve Silverstone Strider Gold, 850W Corsair 780T Microsoft Intelli Mouse 
CPUMotherboardGraphicsRAM
Pentium 4 Northwood@3.06 GHz with HT Single Cor... Intel 845 PE Brookdale based Toshiba BTR80 on T... Nvidia GeForce4 460 Go DDR1 1GB 
RAMHard DriveOS
DDR1 1GB Western Digital Scorpio Blue WD2500BEVE 250GB Windows XP 32bit Home Edition 
  hide details  
Reply
QX 9650: Retired
(17 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core 2 Extreme QX9650 Asus P5Q DELUXE Gigabyte NVIDIA GeForce GTX 580 Super Overclock GSKILL Trident Extreme Performance Memory F2-88... 
RAMRAMRAMHard Drive
GSKILL Trident Extreme Performance Memory F2-88... GSKILL Trident Extreme Performance Memory F2-88... GSKILL Trident Extreme Performance Memory F2-88... Western Digital Caviar Blue 
Hard DriveCoolingOSMonitor
Western Digital Caviar Blue Thermaltake Frio Overclock King Windows 7 Professional  Philips FTV 32PFL5605H, 32'' 
KeyboardPowerCaseMouse
Microsoft Comfort Curve Silverstone Strider Gold, 850W Cooler Master Cosmos RC 1000 Microsoft Intelli Mouse 
Audio
SoundBlaster Audigy 
CPUMotherboardGraphicsRAM
Intel® Core™ i7-4770K Processor Asus Maximus VI Hero Gigabyte GTX 780 ti GHz edition G.SKILL ARES F3-2400C11Q-32GAB 
Hard DriveHard DriveHard DriveHard Drive
WD Blue 6TB Desktop Hard Disk Drive WD Blue 6TB Desktop Hard Disk Drive Samsung 840 Evo 500 GB Samsung 750 Evo 120 GB 
Optical DriveCoolingOSMonitor
LG GDR-H30N DVD-ROM DRIVE Thermaltake Frio Overclock King Windows 7 Professional  Acer Predator X34 
KeyboardPowerCaseMouse
Microsoft Comfort Curve Silverstone Strider Gold, 850W Corsair 780T Microsoft Intelli Mouse 
CPUMotherboardGraphicsRAM
Pentium 4 Northwood@3.06 GHz with HT Single Cor... Intel 845 PE Brookdale based Toshiba BTR80 on T... Nvidia GeForce4 460 Go DDR1 1GB 
RAMHard DriveOS
DDR1 1GB Western Digital Scorpio Blue WD2500BEVE 250GB Windows XP 32bit Home Edition 
  hide details  
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