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Help: Max FSB Mobo Question

post #1 of 6
Thread Starter 
Hello once again everyone!
So I'm going to find the max FSB for my mobo, and I read the guide and I have a little question. When lowering memory timings, in my BIOS there's '1T/2T Memory Timing' which is on Auto/2T, I should change it to 1T correct? And that's the only thing I have to adjust for memory timings correct?

Right now my FSB:RAM ratio is 1:1 (200:200)

And when changing the vdd, with the options there I believe the highest it can go up to that's listed is 1.8, but I should go with 1.6 or 1.7 because I'm on stock cooling yes?

And also for PCI Bus, it's the FSB x divider, what exactly is the divider? Is there a program that can tell me the PCI Bus and divider since I don't know what either of them are?

Other than those, I think I know what I'm going to do.

Thanks a lot guys, best wishes for the holidays
Jim
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post #2 of 6
The 1T Command has very little effect on performance when reduced to the more stable 2T when it's needed.
The RAM voltage is dependant on the RAMS abitily to function correctly at increased voltages. Most can utilize 2.8v safely.
On the CPU's voltage, 1.5 is usuallu the max with stock FAS cooling.
The divider allows the RAM to run at a slower sooed relative to the HTT.
So if you ran your HTT at 250MHz and the RAM can only run 200 the divider accomidates this. The below link should help you to find the appropriate divider. To best utilize Gogars, you need to find the individual max CPU and RAM stable OC
http://math.gogar.com/athlon64.cgi
As far as the PCI bus, it should be set to 33MHz and not increased.
    
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post #3 of 6
When you talk 1:1 on DDR ram, is it still going to be 200/200... or do u consider that when it is set to 400Mhz that it is 1:1?
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post #4 of 6
Quote:
Originally Posted by Lewiscypher
When you talk 1:1 on DDR ram, is it still going to be 200/200... or do u consider that when it is set to 400Mhz that it is 1:1?
200 mhz is the actual clock frequency, DDR400 is misleading because it's "effective speed" and not actual speed. DDR memory executes instructions on the rising and falling edge of the system clock, so in effect, it performs similar to SDRAM operating at twice the frequency.
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post #5 of 6
Thread Starter 
I just upped the HTT from 200 to 210 and only did that. I got a 100Mhz gain which is nice for a first step haha, but I wonder, my ratio is still 1:1, so my ram frequency is also 210... Now I have PC3200 DDR400's which are default 200, is this 'safe' to be running them at 210?
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post #6 of 6
Quote:
Originally Posted by sccr64472
200 mhz is the actual clock frequency, DDR400 is misleading because it's "effective speed" and not actual speed. DDR memory executes instructions on the rising and falling edge of the system clock, so in effect, it performs similar to SDRAM operating at twice the frequency.

Thats what I figured. So if I am trying to get that 1:1 ratio do I want to keep the memclock frequency setting at 400 MHz, or drop it down to the true 200Mhz speed?
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Turbo-Cool 510 SLI Expres Thermaltake Sunami Logitech LX500 
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