Cant boot into windows with 240FSB

[Heligrin]

Like the title says, i am unable to boot into windows when the FSB/HTT is above 240. I tried 250, but that would just restart in the middle of the windows logo. 245 would BSOD after it booted past the title bar, the welcome screen BSOD. I am able to boot into 240 and i did a 1 hour prime before i decided to up the FSB again. I dont know why 250 is unable to boot.
Cpu volts at 1.45
Ram: 2.7

Help

Asus A8N-Sli deluxe
3700+ San Diego
G.SKill HZ ddr 500
Antec TP II 550W

 

[RichUK]

Try a 2T command rate, i think this board has an issue with 1T over 240 ish HTT.

I?m assuming you are just isolating the HTT speed and 1:1 mem speed, and not throwing the CPU variable into it aswell

 

[Heligrin]

I know the CPU can do over 2.4, done it before. I just cant boot into windows with a fsb over 240 and have it be stable. 230 is rock solid. I know for a fact that this is a FSB problem. 250 cant boot, 245 boot then BSOD, 240 boot into windows and a BSOD randomly.

 

[RichUK]

Originally posted by: Heligrin
I know the CPU can do over 2.4, done it before. I just cant boot into windows with a fsb over 240 and have it be stable. 230 is rock solid. I know for a fact that this is a FSB problem. 250 cant boot, 245 boot then BSOD, 240 boot into windows and a BSOD randomly.

In that case like i said, change the command rate from 1T to 2T (within the BIOS). IIRC it is a known problem with that specific board. Yes you will lose a little performance from changing to 2T, but there is nothing you can do about it, and on A64's its not really an issue anyway (you wont notice it). Of course you can run a divider on the memory to keep it below 240Mhz, but i am unsure whether the known the fault effects this aswell.

Summary: change the command rate from 1T to 2T

 

[Heligrin]

I will try that

 

[Heligrin]

Originally posted by: RichUK

Originally posted by: Heligrin
I know the CPU can do over 2.4, done it before. I just cant boot into windows with a fsb over 240 and have it be stable. 230 is rock solid. I know for a fact that this is a FSB problem. 250 cant boot, 245 boot then BSOD, 240 boot into windows and a BSOD randomly.

In that case like i said, change the command rate from 1T to 2T (within the BIOS). IIRC it is a known problem with that specific board. Yes you will lose a little performance from changing to 2T, but there is nothing you can do about it, and on A64's its not really an issue anyway (you wont notice it). Of course you can run a divider on the memory to keep it below 240Mhz, but i am unsure whether the known the fault effects this aswell.

Summary: change the command rate from 1T to 2T

I LOVE YOU, AHAH, it works, 250 right now in windows doing prime. TY

 

[JustAnAverageGuy]

Originally posted by: RichUKOf course you can run a divider on the memory to keep it below 240Mhz

The problem with the Deluxe board was the HTT itself, not the memory speed. So dividers wouldn't help.

 

[RichUK]

Originally posted by: JustAnAverageGuy

Originally posted by: RichUKOf course you can run a divider on the memory to keep it below 240Mhz

The problem with the Deluxe board was the HTT itself, not the memory speed. So dividers wouldn't help.

Like i said "Of course you can run a divider on the memory to keep it below 240Mhz but i am unsure whether the known fault effects this aswell. "

Either way you have cleared this up. I wasn?t sure as command rate directly correlates with memory not HTT, so ASUS basically just had a real crappy BIOS for this to happen.

 

[MCsommerreid]

Totally a RAM timing problem, as RichUK said. I had the same problem with my X2, and fixed it by loosening the RAM timings and then getting some better RAM.

 

[GuitarDaddy]

Originally posted by: JustAnAverageGuy

Originally posted by: RichUKOf course you can run a divider on the memory to keep it below 240Mhz

The problem with the Deluxe board was the HTT itself, not the memory speed. So dividers wouldn't help.

Wrong! I.ve hade this board over a year and HTT can go over 300 no problem, Its just 1T over 240 thats the problem

 

[JustAnAverageGuy]

Originally posted by: GuitarDaddy

Originally posted by: JustAnAverageGuy

Originally posted by: RichUKOf course you can run a divider on the memory to keep it below 240Mhz

The problem with the Deluxe board was the HTT itself, not the memory speed. So dividers wouldn't help.

Wrong! I.ve hade this board over a year and HTT can go over 300 no problem, Its just 1T over 240 thats the problem

If you read the part of the quote I editted out, we specifically mentioned the fact that the 1T timing was related.