Overclock.net › Forums › AMD › AMD - General › Overclocking nelp for a noob
New Posts  All Forums:Forum Nav:

Overclocking nelp for a noob - Page 2

post #11 of 15
Thread Starter 
Quote:
Originally Posted by Acoma_Andy
Just curious but is this a 747 2800+ or 3000+ Clawhammer?
3000+

Quote:
Everything he said will be covered in that overclocking guide.
OK, thanks. *Gulp*

Quote:
The concepts are the same in the link with the 939 with the 754 exception of the HTT of "LDT" memory multiplyer.
The 754 uses an 800MHz or 4x200MHz so when you up the CPU default bus speed of 200MHz drop the LDT of 4x to 3x up to 266MHz, beyond that drop to 2x.
http://www.overclock.net/faqs/31782-...pu-memory.html
That will help you find the components max stable speeds
I don't understand many words in that. Sorry.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMDSempron 1800Mhz Hammer DFI LANParty UT nF3 250Gb nVIDIA6800GS 256MB 1GB OCZ PC3200 DDR SDRAM 
Hard DriveOSMonitorKeyboard
Seagate80GB, Hitachi250GB XP Media Centre BenQ FP71G [17" LCD] Standard Logitech 
PowerCaseMouse
400W Thermaltake Soprano Logitech G7 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMDSempron 1800Mhz Hammer DFI LANParty UT nF3 250Gb nVIDIA6800GS 256MB 1GB OCZ PC3200 DDR SDRAM 
Hard DriveOSMonitorKeyboard
Seagate80GB, Hitachi250GB XP Media Centre BenQ FP71G [17" LCD] Standard Logitech 
PowerCaseMouse
400W Thermaltake Soprano Logitech G7 
  hide details  
Reply
post #12 of 15
Ok, I was refering to the memory and how it is effected by OCing the CPU.
Both run at the same speed at original or "default" settings.
The RAM has a means of being multiplied by 4 by default, so the 200MHz speed x4 = 800MHz overall or 4x200=800
When you increase the CPU OC from 200 so does the RAM OC.
Lets say you set your CPU to 250MHz, if you substitute the 4x200 with 4x250 you would have 4x250=1000 which can cause instability and crashes in the system. Therefor, you must change the "4x" to 3x which will give you 3x250= 750 and keep you at a safe over all RAM speed.

There is more about the RAM and it's being effected when the CPU is OCed.
I'll get into that in a bit
    
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
    
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 #13 of 15
Thread Starter 
Yep, I completely understand that now. Thanks.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMDSempron 1800Mhz Hammer DFI LANParty UT nF3 250Gb nVIDIA6800GS 256MB 1GB OCZ PC3200 DDR SDRAM 
Hard DriveOSMonitorKeyboard
Seagate80GB, Hitachi250GB XP Media Centre BenQ FP71G [17" LCD] Standard Logitech 
PowerCaseMouse
400W Thermaltake Soprano Logitech G7 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMDSempron 1800Mhz Hammer DFI LANParty UT nF3 250Gb nVIDIA6800GS 256MB 1GB OCZ PC3200 DDR SDRAM 
Hard DriveOSMonitorKeyboard
Seagate80GB, Hitachi250GB XP Media Centre BenQ FP71G [17" LCD] Standard Logitech 
PowerCaseMouse
400W Thermaltake Soprano Logitech G7 
  hide details  
Reply
post #14 of 15
A bit more

Next is the base speed of 200MHz or DDR400 (PC3200) and how that it self is effected.
As you increase the CPUs speed of a default 200MHz the RAMs speed itself increases.
1. DDR400 or PC3200 uses a 200MHz speed like I mentioned above. If you increase the CPU to 250MHz the RAM will run at the same speed. The problem is can your RAM run that fast stable?
2. What can you do the deal with #1
Set the RAM to DDR333 or DDR266 settings in the BIOS, that gives a base speed that is slower so it has room to increase in speeds along with the CPUs increased speeds
3. There is a lot more to it than that but for now it will get you going well!
Other things involve voltage increases for the RAM and possibly changing the RAMs timings. We will save that for later!
    
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
    
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 #15 of 15
Thread Starter 
Thanks again The_Duke.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMDSempron 1800Mhz Hammer DFI LANParty UT nF3 250Gb nVIDIA6800GS 256MB 1GB OCZ PC3200 DDR SDRAM 
Hard DriveOSMonitorKeyboard
Seagate80GB, Hitachi250GB XP Media Centre BenQ FP71G [17" LCD] Standard Logitech 
PowerCaseMouse
400W Thermaltake Soprano Logitech G7 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMDSempron 1800Mhz Hammer DFI LANParty UT nF3 250Gb nVIDIA6800GS 256MB 1GB OCZ PC3200 DDR SDRAM 
Hard DriveOSMonitorKeyboard
Seagate80GB, Hitachi250GB XP Media Centre BenQ FP71G [17" LCD] Standard Logitech 
PowerCaseMouse
400W Thermaltake Soprano Logitech G7 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD - General
Overclock.net › Forums › AMD › AMD - General › Overclocking nelp for a noob