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Help overclocking AMD 3800+ X2

post #1 of 23
Thread Starter 
I am new to overclocking and have been reading everything I can find on people who have overclocked this CPU. I have it on an Asus A8V-E.

Changed the CPU clock to 245 MHz. Before doing this, I disabled PCIEx and PCI clock sync to CPU. My settings look like this:



I get into trouble with the memory settings and the system won't boot. Presently, this is my default memory setting:



I changed:
CAS# Latency from 3 to 2.5
Min RAS# active time (Tras) from 8 to 7
The system would not boot

How do I raise the FSB/HTT frequency?
Where is the HTT changed?

Is there an 'auto' setting that has to be disabled? I went into the DRAM configuration and change it to manual. I changed the Max. Mem. Clock to 233 MHz. When the computer came back up, it showed the timing frequency in CPU-Z at 119 MHz.

Any help would be greatly appreciated. TIA
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post #2 of 23
K try giving the ram some more voltage o loosening the timings if it won't boot.
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post #3 of 23
Thread Starter 
That didn't make any difference.
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CPUMotherboardGraphicsRAM
AMD Manchester X2 3800+ Asus A8V-E Deluxe Nvidia Quadro FX 1400 1 GB OCZ5001024EBPE PC-4000 
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2 x 250 SATA WD Windows XP Pro SP2 Dual Viewsonic VX924 Logitech 
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My System
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CPUMotherboardGraphicsRAM
AMD Manchester X2 3800+ Asus A8V-E Deluxe Nvidia Quadro FX 1400 1 GB OCZ5001024EBPE PC-4000 
Hard DriveOSMonitorKeyboard
2 x 250 SATA WD Windows XP Pro SP2 Dual Viewsonic VX924 Logitech 
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450 watt Enlight Lian Li PC V2000 Logitech MX1000 
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post #4 of 23
Please go to the "USER CP" at top of this page and fill in your system.
Knowing what you have will help us
Depending on what RAM you have tightening the timings may cause you problems.
Once you fill in your system/profile you should get more imput on your situation .
And WELCOME to the forum!

An Advanced search in the AMD section for your CPU may turn up some more info too.
    
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post #5 of 23
Thread Starter 
I added what I knew in my CPP.

Where is the HyperTransport frequency multiplier? Is there another name for this in the A8V-E BIOS?
My System
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CPUMotherboardGraphicsRAM
AMD Manchester X2 3800+ Asus A8V-E Deluxe Nvidia Quadro FX 1400 1 GB OCZ5001024EBPE PC-4000 
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2 x 250 SATA WD Windows XP Pro SP2 Dual Viewsonic VX924 Logitech 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Manchester X2 3800+ Asus A8V-E Deluxe Nvidia Quadro FX 1400 1 GB OCZ5001024EBPE PC-4000 
Hard DriveOSMonitorKeyboard
2 x 250 SATA WD Windows XP Pro SP2 Dual Viewsonic VX924 Logitech 
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post #6 of 23
in asus its usually in bios under ADVANCED-CPU CONFIG-Hyper Transport (ht) config, go in there and you have the settings for 1000,800,600,400, this is basically the 5x,4x,3x of your fsb so figure out what your fsb is and say 245 in your case now times that by say 5 = 1225 which is way to high (>1000 ht)

now change your ht to the 600 setting to be sure that it wont cause you any problems

your ram i would leave those timings for now dont try to tighten them until you get your cpu up to its highest oc and i assume you know how to change the ram divider be sure to lower that until you can get your cpu stable

also i am pretty sure that you will have to changethe 2t in the ram settings to enabled if you leave it in auto it will not help with stability
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xeon
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post #7 of 23
Thread Starter 
Found it! They call it "LDT Bus Frequency"
No wonder I was lost :-)
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AMD Manchester X2 3800+ Asus A8V-E Deluxe Nvidia Quadro FX 1400 1 GB OCZ5001024EBPE PC-4000 
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2 x 250 SATA WD Windows XP Pro SP2 Dual Viewsonic VX924 Logitech 
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450 watt Enlight Lian Li PC V2000 Logitech MX1000 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Manchester X2 3800+ Asus A8V-E Deluxe Nvidia Quadro FX 1400 1 GB OCZ5001024EBPE PC-4000 
Hard DriveOSMonitorKeyboard
2 x 250 SATA WD Windows XP Pro SP2 Dual Viewsonic VX924 Logitech 
PowerCaseMouse
450 watt Enlight Lian Li PC V2000 Logitech MX1000 
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post #8 of 23
Thread Starter 
I found I wasn't able to tighten the timing unless I dropped the memory timing to 166 MHz.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Manchester X2 3800+ Asus A8V-E Deluxe Nvidia Quadro FX 1400 1 GB OCZ5001024EBPE PC-4000 
Hard DriveOSMonitorKeyboard
2 x 250 SATA WD Windows XP Pro SP2 Dual Viewsonic VX924 Logitech 
PowerCaseMouse
450 watt Enlight Lian Li PC V2000 Logitech MX1000 
  hide details  
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Manchester X2 3800+ Asus A8V-E Deluxe Nvidia Quadro FX 1400 1 GB OCZ5001024EBPE PC-4000 
Hard DriveOSMonitorKeyboard
2 x 250 SATA WD Windows XP Pro SP2 Dual Viewsonic VX924 Logitech 
PowerCaseMouse
450 watt Enlight Lian Li PC V2000 Logitech MX1000 
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post #9 of 23
I don't think that ram is going to be stable at much higher than stock speeds, try and find the right divider to get it as close to 200mhz as possible.
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post #10 of 23
Hey do this-

Divider= 333mhz

FSB= 240

This will give you 2.4ghz AND 400mhz(DDR400) ram.
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