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HTT will NOT go over 250

T

toymachineman19

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Dec 26, 2004
Messages
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Ok, I have an Abit AV8 with K8T800 Pro. On my motherboard, I have the newest BIOS, and I have fiddled with it, and it's stable @ 2500Mhz, RAM Divider 3:2, Vcore: 1.65V. No matter what I do, set the RAM divider more, increase voltage, etc. the FSB/HTT WILL NOT go over 250Mhz. I cannot change the multiplier because I think my motherboard is wacked (can't lower it), but is there some setting that I can tweak to adjust this? Thanks.
 
Actually I wold use a HTT mult of 4 until you get around 270 or so then use 3. Or is this the mult you say you can't change?
 
yup that's the mutiplier i can't change. The HTT will not change at all, I'm pretty sure my motherboard is just FUBAR when it comes to certain things.
 
Maybe post some of the options in your bios. It might be named something different that one of us might notice.
 
I just put my system in a new Antec p180 and now I can't get over 250 either. I heard there might be a problem with nforce4 and the SATA ports?
 
^^^, well I do know sometimes you should plug the SATA into ports 3 & 4 because they are FSB locked, and 1 & 2 aren't always. Also, I will get some pics of my BIOS in a few minutes.
 
isnt the tell-tale sata problem when you cant really get past about 237 or something like that?

If he can get to 250 i doubt thats his problem...but still check it out. It is a valid point and I have been foiled by those sneaky SATA ports.
 
My cusion has the same board, he is stuck at 2.25Ghz with his 3000+ Vience because his board also tops out at 250...

Here the funny part. It ran up to 290 with my newcastle 3800+
 
Can somebody explain this sata port problem to me please? If i read correctly it's the reason why some chips won't go over 230ish fsb then? I think i might have that problem if it's true because my chip WILL NOT even go past 2ghz (using 3000+ venice of course)
 
Neurotic-Turtle said:
Can somebody explain this sata port problem to me please? If i read correctly it's the reason why some chips won't go over 230ish fsb then? I think i might have that problem if it's true because my chip WILL NOT even go past 2ghz (using 3000+ venice of course)
Click to expand...
It wont prevent the chip from going that high...

What happens is when you overclock you OC everything in your system...not just the CPU and mem...thats why you need to have an AGP lock...the SATA drives get OC'd too, because I believe they are on the PCI bus (correct me if im wrong about that, im not sure about that one), but whatever its part of, you also overclock the drives, and ovbiously HDDs dont want to be overclocked...so you lock them. The caveat is that I think they have to be locked on teh board, and i think boards with 4 SATA ports only lock 2...dont know why.

So there you go.
 
This only applies if you're using an NF3. Those boards (some, anyway) had an extra SATA controller on the PCI bus that provided an additional 2 SATA ports that were labelled "1" and "2". On the NF4, most boards will only have the 4 provided by the NF4 chipset, which are locked by default. There are some boards that deviate from this, and provide additional ports via an external PHY, and the three most common are the DFI SLI-DR, the Asus A8N-SLI Premium/Deluxe, and the MSI K8N Neo4 Platinum/Diamond.
This external PHY is again on the PCI bus (or is it PCI-E? I can't remember. Anywhoo..) and is not locked properly, therefore limiting overclocks above the notorious "237Mhz" point, where hard drive corruption often sets in, preventing you from booting into Windows.
The limit of 250 you seem to have hit may be a problem with either the chipset/board, the processor, or the HTT multi.
1. Try to up the voltage to the NB by one level.
2. Swap in a different CPU is possible, replicate experiment.
3. Lower the HTT multi to 2.5 (the lowest I reccommend, as some boards have problems with the HTT at 2).
4. If you're using the stock multiplier for the processor, have you considered you may have just hit your limit on this chip?

Oh, and are you using RAM dividers to make sure it's not your RAM limiting your HTT overclock?
 
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