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Noob here

post #1 of 4
Thread Starter 
Hi, I've never overclocked before but I thought I'd give it a go on my system. Right now I have an Asus K8V-X SE motherboard with a Sempron 2800+ (1600MHz) CPU. I read up on the K8 architecture and I think I know what I need to do, but I'm having a little trouble interpreting the mobo Bios settings and could use some help. This is what I've figured out so far, correct me if I'm wrong:with a 200MHz cpu base clock the core multiplier must be 8x, the memory divider /8, and the HT multiplier is 4x (for 800MHz). I would like to try to raise the CPU speed from 1600MHz to 2000MHz, which requires raising the CPU base clock to 250MHz. In order not to blow anything else up, I need to lower the HT multiplier to 3x and raise the memory divider to /10. I also need to lock the PCI and AGP clocks. Now in the Bios, the CPU base clock is pretty easy to find and manipulate. There is no direct access to the HT multiplier or the memory divider, just the end frequencies. What I'm wondering is when I go into the Bios and select 600MHz for the HT, does that mean I'm really setting the HT multiplier to 3x, or is it telling the Bios to set the multiplier to whatever it needs to (given the base clock) to end up with a 600MHz HT clock? Similar question for the memory divider: when I select 166MHz is that really telling the Bios to use a /10 memory divider or is it telling the bios to do what it has to to get to 166MHz? Finally there's a PCI/AGP clock selection available where I can pick auto, 33/66MHz, or 37.7/75.4MHz. If I select 33/66, is that locking the PCI/AGP clocks at that speed, or is it just locking in the standard (with a 200MHz base clock) multiplier which would result in a 41.25/82.50MHz clock?

Thanks for the help.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Sempron 2800+ Asus K8V-X SE GeForce 5200FX 1GB DDR 400 
OS
WinXP Pro SP2 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Sempron 2800+ Asus K8V-X SE GeForce 5200FX 1GB DDR 400 
OS
WinXP Pro SP2 
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post #2 of 4
Hey Welcome to OCN... Fill in your system specs in your USERCP
Beasttt
(13 items)
 
  
CPUMotherboardGraphicsRAM
E6420 Core 2 Duo Gigabyte P965-Ds3 7600 GT 2 gb GEIL 
Hard DriveOSMonitorKeyboard
250GB Western Digital xp pro sp2 LG Flatron 19 LCD hp 
PowerCaseMouseMouse Pad
XION SuperNova 600W tt armor Razer Copperhead Allsor Gaming Pad 
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Beasttt
(13 items)
 
  
CPUMotherboardGraphicsRAM
E6420 Core 2 Duo Gigabyte P965-Ds3 7600 GT 2 gb GEIL 
Hard DriveOSMonitorKeyboard
250GB Western Digital xp pro sp2 LG Flatron 19 LCD hp 
PowerCaseMouseMouse Pad
XION SuperNova 600W tt armor Razer Copperhead Allsor Gaming Pad 
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post #3 of 4
Yes, 600=3x and 400=2x, many of those 754 MBs can do well over 800MHz over all on the memory HT but it's best to start with the 800MHz max in mind, if necessary later you can try to push it up.
3x or "600" should allow you to push the CPU bus up to about 270MHz, 266 mathamatically, but the varables allow a bit beyond and still have stability. Some of those 754 MBs can even do the 1000MHz like the 939.
Start with the 33/66 so you don't have stability issues, either onboard PCI devices or PCI cards may not like the higher clocking of 37.7/75.4MHz. You can always try it later but some devices (cards) can be damaged if run to fast. There is little gained by upping the PCI/AGP bus and a lot to lose if the device(s) are damaged by increasing the base bus speed of them.

Do fill in your "System Specs" via the USER CP link
    
CPUMotherboardGraphicsRAM
X4 965 ASUS M4A79 Deluxe 9800GTx2 2x2G OCZ Reapers 
Hard DriveOptical DriveOSMonitor
500G WD Black LiteOn CD/DVD R/W Win7 64 22'' ws Acer AL2223W 
KeyboardPowerMouse
MS KU462 Natural SS DA750 MS 5 button 
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CPUMotherboardGraphicsRAM
X4 965 ASUS M4A79 Deluxe 9800GTx2 2x2G OCZ Reapers 
Hard DriveOptical DriveOSMonitor
500G WD Black LiteOn CD/DVD R/W Win7 64 22'' ws Acer AL2223W 
KeyboardPowerMouse
MS KU462 Natural SS DA750 MS 5 button 
  hide details  
Reply
post #4 of 4
Thread Starter 
Thanks. That's too bad you can only put in one system for the specs.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Sempron 2800+ Asus K8V-X SE GeForce 5200FX 1GB DDR 400 
OS
WinXP Pro SP2 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Sempron 2800+ Asus K8V-X SE GeForce 5200FX 1GB DDR 400 
OS
WinXP Pro SP2 
  hide details  
Reply
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