gnoelalexmay to the boards!
I know this is all a little over-whelming and some of the naming conventions - both popular use and ASUS - quite frankly suck but we're stuck with 'em.
The FSB (
Front
Side
Bus) - or "
CPU FSB Frequency" in the ASUS BIOS - is the same as HTT on the CPU-Z read-out and is really a reference clock or "clock" for short.
Do not get this confused with the HT Bus speed, which is another part of the system based off the FSB. Since FSB is the most popular term I'll use it (but try not to get too confused when others use something else). The FSB is used to determine the Processor Frequency, RAM Frequency, and HT (
Hyper-
Transport) Bus speeds. The default FSB is [200].
Processor frequency (CPU speed) is calculated by taking the FSB times the
Processor Frequency Multiplier (CPU multiplier or CPU multi), as you've already guessed. Your 4800 has a stock speed of 2400 MHz, which is derived from the stock FSB of 200 MHz times the stock CPU multiplier of 12X. "200x12" is the format often used to show CPU frequency. Using the pics above my CPU frequency is 233x12. This is the most critical number when over-clocking -
all other over-clocks are secondary to making the CPU frequency as high as possible.
RAM frequency (RAM speed) is
roughly calculated by taking the FSB times the
Memclock Value (aka "RAM divider" or "memory divider") divided by 200. This is a
very rough value (the actual formula is a little more complicated than that) but it's good enough to get you in the ball park. The default Memclock Value is [200 MHz] and, along with our default FSB of 200 gives us a default RAM speed of 200 MHz (200FSB x 200Memclock / 200 = 200). Since a lot of RAM is built to run at the default of 200 MHz we want to keep the RAM speed near 200 until we find our fastest CPU speed. This is the second most important over-clock but the CPU speed is much more important. I know you've got good RAM there and you can make good use of it after the fastest CPU speed is found.
HT Bus speed is calculated by taking the FSB times the HT multiplier - or "
K8 to NB Frequency" in the ASUS BIOS. The default "K8 to NB Frequency" setting is [5X] making our default HT Bus speed 200 x 5 = 1000 MHz. This is the least important speed of our trio and (for the time being) shouldn't go over the default of 1000 MHz.
To recap:
FSB (
CPU FSB Frequency [200] default) is the base clock and is used to calculate all other speeds.
CPU speed = FSB x CPU multiplier (
Processor Frequency Multiplier [12X] default)
RAM speed = FSB x RAM divider (
Memclock Value [200 MHz] default) / 200
HT Bus speed - FSB x HT multiplier (
K8 to NB Frequency [5X] default)
To start off use the guide above but set:
CPU FSB Frequency [210] instead of [233]
Processor Voltage [1.200v] instead of [1.325v]
CAS Latency (CL) [3] instead of [2.5]
TRAS [8] instead of [6]
TRP [4] instead of [2]
TRCD [4] instead of [3]
Use all other settings exactly as they are in the pics above (except RAID - don't change
your settings for that!) then save your settings and exit.
Good luck and get back to us ...