Originally Posted by h2oxtreme
Hi! I read all the topics with Athlon 64 3200+ Venice oveclocking, but I didn't succed in overclocking mine. I have a Asus A8N5X mainboard, and 2GB of DDR Geil Value.
I've modified the folowing value in BIOS:
-HT 3x (I mention that my default value is 2x, someone can explain me more about the Hyper Transport?)
-CPU multiplier 9x
-Command Rate 1T (default 2T)
-CPU V from auto to 1.44, to 1.5 but worthless
-CPU freq 220 (it starts but the freq is same, 2000), then 250 but didn't start the windows-it boots but doesn't load the windows, even with 1.5 VCore voltage
Here is a screenshot of my proc values
I read about modifing PCI bus freq, mine is set to 100MHz, is it worth to modify it to 67 MHz, as I read?
Basically I want to OC at leat at 2,4 GHz.
I have a stock cooler, but if I see that the OC is working I'll buy a better cooler. If I raise the FSB higher than 200, in CPU-z it's shows me no more than 200Mhz. And if Iraise higher than 220, the OS don't load. Regarding the HT, default is auto, wich means 5x.
Can you give me some ideas, it's the bus freq locked to maximum 200MHz?
Anyway, looking at your CPUz your HT Link is way too low, as others have pointed out.
As for HTT, well HTT stands forH
echnology. HTT is basically the same thing as what FSB (frontside bus) is on an intel machine. It is the reference clock for your whole system. Why it's 200, I have no idea, maybe AMD liked it that way.
Now you can go about adjusting your processors frequency in 2 ways, either raising the HTT reference clock or changing the CPU multiplier. The equation for that is simple, HTT clock x CPU multiplier = processor speed.
HT Link is also based off of the HTT reference clock, so you'll need to adjust the HTLink multiplier accordingly to keep it's overall speed between 750-1000MHz. Overclocking the HT Link provides no noticeable improvements.
As for RAM there are usually dividers. I believe Asus only gives you options like 100, 133, 166, 200. The way this works is by ratio. It assumes that the HTT reference clock is 200. So at stock speeds you'd set it to 200, this is a 1:1 ratio. So for every MHz you add to the HTT clock, the ram frequency is going to go up that much as well. If I did my calculations correctly 166 [0.83:1] Ratio, 133 [0.665:1] ratio, and of course 100 is [0.5:1].
So the way to figure this out you need this formula (RAM divider x HTT reference clock= SD RAM speed) then you multiply your result by 2, because the RAM is dual
data rate, and then you'll have your RAM frequency.
So here's an example: HTT clock: 225, RAM divider 166 (0.83)
225 x 0.83= 186.75. 186.75 x 2 = DDR 373.
Try to keep your RAM at or below 200 if you're only running 2 sticks. If you're running 4, for now try to keep them below 166.