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Q9400 won't overclock! :(

post #1 of 40
Thread Starter 
Hi people

Yesterday i got my new Q9400 quad core cpu to upgrade my e6320. I needed it to play games on full graphics cos my old one was bottlenecking the GPU somewhat. I now experience much less bottleneck but i still want to OC this cpu(Q9400). However i can't seem to overclock it by even 10 mhz even when at stock voltages or increased. My mobo is a Abit AB9 Quad GT and the cpu is compatible but it was only compatible after the last bios update (1.7) whether this would prevent overclocking because its not been tested properly on this board I duno. Any suggestions? I also have 4GB of Kingston Value Ram DDR2 800 and a 850W corsair PSU. Any help appreciated

Cheers guys
    
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post #2 of 40
It could easily be the board, and Abit boards are no longer in production, so they're no longer well supported. Still, more information is needed, like what voltages you have tried, etc.

You may wish to fill out your system specs in your user profile, so we can see all of the details --it helps us offer more advice.
Edited by LoneWolf15 - 6/10/10 at 6:55am
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post #3 of 40
Thread Starter 
Hi lonewolf

Cheers for the reply. i have updated my system specs so you can see that now hopefully. I have tried it on stock voltages because lots of people have said they managed to get it up to atleast 3Ghz easily on stock voltages. I also tried bumping the core voltage up to 1.35 and the DDR2 to 2.00 and left the others on auto.
    
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Q9400 @2.66 Ghz Abit AB9 Quad GT Asus GTX 470 Voltage Tweak Edition 4GB DDR2 800 Kingston Valueram 
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post #4 of 40
I have the same multiplier as you, and I will say, 3.2GHz (400MHz FSB) was easy on my board, requiring very little work, and that's on stock voltages.

There are several possibilities, but first, I'd set your board's BIOS completely to default, including voltages, and start from there. Once you've done that, turn your CPU and memory voltages to manual, but then set them to the stock settings specified by your CPU and your RAM. This will hopefully eliminate any discrepancies that might occur from automatic. Q9400 processors are multiplier-locked, so as you know, you'll need to up your front-side bus to overclock.

Kingston ValueRAM is good RAM --but it isn't overclocker's RAM. That said, it will probably do a conservative overclock if you keep the timings relaxed. I'd set the RAM to a 3T command-rate (or higher, if it's already rated at 3T), and then start with the rest of your settings to match factory spec. If the system won't boot, relax the timings until it does. If that doesn't work, up the voltage a notch on the RAM, but keep the CPU stock for now.

When you say your system "won't overclock", what do you mean? Will it POST when you change the settings, but not boot to Windows? Does it not boot at all, and force you to return to default settings by clearing CMOS?
Edited by LoneWolf15 - 6/10/10 at 11:50am
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post #5 of 40
Thread Starter 
Yes I started off at default for everything, I flashed the bios aswell just to make sure. What i have been doing is upping the extenal clock (which I assume is the FSB? :S) by 1 each time and on my board there is a function called OC on the fly which tests the clock settings while still in the bios and without rebooting. I have been using that but i can nly get to about 345 Mhz before it freezes or reboots from the bios. I have put the voltages right down the specified settings for the CPU and RAM but no luck there either.

And when you ask if it will post, it will post and not boot to windows up until about 350 Mhz then after that it just won't post at all, just black screen.

I'm not to sure about the timings I don't know how to check them or what the 3T commend rate is :s sorry for being stupid xD.

Cheers again for the help
    
CPUMotherboardGraphicsRAM
Q9400 @2.66 Ghz Abit AB9 Quad GT Asus GTX 470 Voltage Tweak Edition 4GB DDR2 800 Kingston Valueram 
Hard DriveOSMonitorKeyboard
1TB samsung spinpoint F1 Windows 7 64 bit Samsung syncmaster 226BW 22" Microsoft 
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TX850W corsair ThermalTake M9 Microsoft 
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CPUMotherboardGraphicsRAM
Q9400 @2.66 Ghz Abit AB9 Quad GT Asus GTX 470 Voltage Tweak Edition 4GB DDR2 800 Kingston Valueram 
Hard DriveOSMonitorKeyboard
1TB samsung spinpoint F1 Windows 7 64 bit Samsung syncmaster 226BW 22" Microsoft 
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TX850W corsair ThermalTake M9 Microsoft 
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post #6 of 40
I had gotten a Q9400 on a gigabyte p35-ds3l mobo to 3.6ghz and that was it, i was lucky to get it that high. I say buy a better mobo
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post #7 of 40
As already suggested by a better mobo to overclock the Q9400 cpu. The Kingston ram isn't good for overclocking as already mentioned.
I did a build for a relative with a Q9400 cpu and easily overclocked it to 3.4ghz using a EP45-UD3L mobo.

http://www.newegg.com/Product/Produc...82E16813128372
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post #8 of 40
Something else to consider (9/10 times is the cause) is the memory divider used. When I see a CPU not take even a small OC, it is usually because the ram divider is set to run too high and the ram is then run out-of-spec (too high) when the FSB is increased. The best thing to do is to set the ram at the lowesrt divider (running the ram at the slowest speed) when OCing the CPU. Then as you raise the FSB, the ram speed will increase, but not out-of-spec.
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post #9 of 40
Thread Starter 
Yer i think i will need a new mobo guys, and ericeod I'm sure the Ram isn't running out of spec cos at stock/default settings its running at 425 Mhz and then when i try and OC my CPU I always change the ratio down to 1:1 so that it runs below 425 so i don't think that could be the cause :/. I managed to OC my e6320 on this board from 1.86 Ghz to 2.5 Ghz while using just above stock voltages and by downclocking the RAM so it ran at 350 Mhz. So i don't know whether it could just be the compatibilty of this mobo with the q9400, what do you think?
    
CPUMotherboardGraphicsRAM
Q9400 @2.66 Ghz Abit AB9 Quad GT Asus GTX 470 Voltage Tweak Edition 4GB DDR2 800 Kingston Valueram 
Hard DriveOSMonitorKeyboard
1TB samsung spinpoint F1 Windows 7 64 bit Samsung syncmaster 226BW 22" Microsoft 
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TX850W corsair ThermalTake M9 Microsoft 
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Reply
    
CPUMotherboardGraphicsRAM
Q9400 @2.66 Ghz Abit AB9 Quad GT Asus GTX 470 Voltage Tweak Edition 4GB DDR2 800 Kingston Valueram 
Hard DriveOSMonitorKeyboard
1TB samsung spinpoint F1 Windows 7 64 bit Samsung syncmaster 226BW 22" Microsoft 
PowerCaseMouse
TX850W corsair ThermalTake M9 Microsoft 
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post #10 of 40
When you say 425MHz, is that the actual spped reported by CPU-Z? Because DDR2 ratings are x2, so if you are running 425MHz, then you are already running DDR2 850. If so, then you would be running the ram out of spec. So I guess my question is, "What does CPU-Z report your current ram speed in the memory tab."
My System
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CPUMotherboardGraphicsRAM
6850K ASUS X99-A eVGA GTX 1060 32Gb Team Vulcan DDR4 3000 Cas 15 
Hard DriveHard DriveHard DriveCooling
OS: Crucial M500 Seagate HDD Samsung F3 H100i 
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Windows 10 Pro 64 Samsung KU6300 40" Corsair K70 Vengeance Seasonic Gold 750W 
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My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
6850K ASUS X99-A eVGA GTX 1060 32Gb Team Vulcan DDR4 3000 Cas 15 
Hard DriveHard DriveHard DriveCooling
OS: Crucial M500 Seagate HDD Samsung F3 H100i 
OSMonitorKeyboardPower
Windows 10 Pro 64 Samsung KU6300 40" Corsair K70 Vengeance Seasonic Gold 750W 
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Phantek Enthoo Pro M Logitech G9X 
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