A8N-SLI Deluxe overclock?

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runLoganrun

Gawd
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Jul 4, 2005
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Where is the memory divider for this board's bios? My cpu voltage is set at auto, how do I know what the base voltage is so I can bump it up a little if I need to?
thanks
 
Find hardware monitor in the bios, it will tell you pretty much all you need to know, except ram volts :mad:

Memory divider should be in cpu confijuration, then DRAM settings.
 
I just read in another forum that Asus doesn't list a memory divider per se, it has the max ram clock and you change it accordingly to put it in a divider. Like 200 is 1:2.

I have a Athlon 64 3500, Winchester, not sure of the exact model number.
 
yeah, I was confused as well. Use the RAM clock as the above poster said.

For example, my ram is only good up to around 220mhz. I tested my motherboard and it was stable up to 296 HTT and my cpu was hitting about 2630mhz.

So, I set my RAM speed to 333, and the FSB to 237. that is, 37mhz faster than standard HTT. and the HTT multiplier to 2x.

So, the ram runs at 166mhz while in DDR333 mode, and then add 37mhz to that resulting in a 203mhz ram clock and 237mhz HTT.

With the stock multiplier of 11 on the 3700+ san diego, this results in 2615mhz.
 
J Macker said:
yeah, I was confused as well. Use the RAM clock as the above poster said.

For example, my ram is only good up to around 220mhz. I tested my motherboard and it was stable up to 296 HTT and my cpu was hitting about 2630mhz.

So, I set my RAM speed to 333, and the FSB to 237. that is, 37mhz faster than standard HTT. and the HTT multiplier to 2x.

So, the ram runs at 166mhz while in DDR333 mode, and then add 37mhz to that resulting in a 203mhz ram clock and 237mhz HTT.

With the stock multiplier of 11 on the 3700+ san diego, this results in 2615mhz.
Click to expand...

I think you might still be confused (no offense).
Its generally better to NOT refer to the HTT as FSB....it just gets confusing, since the HTT isn't really the fsb (whole other discussion).
Just because the htt is at 237 does not mean that it adds 37mhz to your ram speed.
Using a ram setting of 166 (ddr333) means a ratio of 5:6 (ram:htt)
237 / 6 = 39.5 x 5 = 197.5 (~200)

While your deduction gave you a pretty close guestimation of your ram speed, this isn't the case. If I used your formula: my htt=317 ram divider=133 + 117 over base 200htt = 250. (My ram is @ 203mhz). And the simple ratio formula I listed above isn't exaclty right either. The actual formula that determines ram speed is this:

Code: 
Memory Frequency = (HTT x (CPU ratio)) / ((CPU rato) x (HTT : DRAM ratio))

The cpu doesn't use decimals, so the cpu ratio x fsb:dram ratio rounds up/down to the next whole number.

Yeah, I know this probably more than you wanted to know, lol. To get a fairly close estimate of ram sped, just use HTT ram:htt formula.
 
So, I was able to find a max limit on the HTT of 328! But then when I turned the cpu multiplier back up to see what the cpu will do I only get up to 2,631 (which is probably alright). To accomplish this I had to turn the cpu voltage up to the max, 1.55v. It's default is set at auto so I wasn't sure where to start from but I found 1.4v and 1.5v in two different places I looked. Is 1.55v too high? As far as I can tell so far it hasn't affected my temps. It seems like I should be able to get more out of my cpu if only I could raise the voltage more.

amd athlon64 3500, winchester
a8n-sli deluxe
 
No vcore for you!! :D
1.55v is the max the asus sli-dlx will give you......one of the reasons I sold mine and got the dfi board.
 
SpoogeMonkey said:
Yeah, I know this probably more than you wanted to know, lol. To get a fairly close estimate of ram sped, just use HTT ram:htt formula.
Click to expand...


actually, I was just trying to figure it out based on various threads all of which were somewhat unspecific regarding the whole thing. thanks for the info.
 
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