over 200fsb?

[taco]

alright, heres the situation.

i have an nf7 2.0, im trying to get over 200fsb with stablity. but for as long as ive had this board i havent been able to do so. ive tried just about every bios for this board (tic-tac and offical releases).

what is holding me back?? i just recently replaced the stock nb heatsink with a beefy passive heatsink, and also to the sb. that didnt seem to help at all.. does anyone have any idea?

[TheDogFather]

The mobile, they don't seem to like FSB.

TDF.

[Perc]

yeah with my molbile i cant get over 220 anything higher and its a no boot. wierd thing is with the same system using my 2500 barton (desktop) i can take it all the way to 246 24/7?? so this leads me to believe that the molbiles dont like the high fsb and that a L12 mod is needed to correct this problem.

peace perc,

[r3b0rN]

still wouldnt explain how he cant even get just over 200 stable... possibly a bad chip, but itd have to be a really bad chip...

[taco]

ya its strange, i just want this board to do 220 and i'd be happy.

ill definatly give that L12 mod a try, anyone have the link for that?

[SPiKE]

With a normal Barton I could reach 250MHz of FSB on a Infinity, but with a Mobile I could only reach 235MHz.

I have done the L12 mod to my Mobile, but currently I have no mobo to test it. I'm still waiting for my LanParty. :(

[blinky]

Originally posted by taco
ill definatly give that L12 mod a try, anyone have the link for that? look for the L12 sticky at the top of this section of the forum (AMD)

[sjohnson]

Unmodded Mobile 2400+ here, on an unmodded Infinity. All BIOS, from the November stock BIOS to the latest 2/17 Alpha and I've had NP going to 250 stable and 256 unstable (like crashing within a few seconds to minutes).

[Mikael]

I have had two NF7-S 2.0 that don't want to do any FSB over 200MHz. I have been up to 220MHz with CPU Interface enabled and 230MHz with it disabled, but stability is bad. The worst thing is that sound somtimes delays horribly, framerate is inconsistent in games and the computer refuses to shut down correctly. I have found no way to cure this. Maximising chipset/AGP voltage or getting better cooling for north/south doesn't help either. The board seems to pretty much be crap for stable overclocking.

Ohh, and I've tried the L12-mod. It doesn't help at all. This is the hardware I'm using:

AthlonXP 1700+ JIUHB 0308 MPMW
Abit NF7-S 2.0
Antec TruePower 480W
2*256MB TwinMOS/Winbond BH-5
GeForce4 Ti4400

[AKRedneck]

The L12 mod did nothing to my XP2600-M to help stability with high fsb. I'd like to hear if anyone has success. I think it is something else we're missing. With my 2500+barton I could boot with stability in the 220's. With this mobile chip, 210 is a stretch...

[celemine1Gig]

Originally posted by AKRedneck
The L12 mod did nothing to my XP2600-M to help stability with high fsb. I'd like to hear if anyone has success. I think it is something else we're missing. With my 2500+barton I could boot with stability in the 220's. With this mobile chip, 210 is a stretch...

The other problem is the board itself. These boards can take high FSB, with low CPU speed or high CPU speed with low FSB, but they can't maintaine stable with both on the high side :rolleyes: :mad:
IMHO, it's a problem with the whole voltage regulation on that board. There seems to be a point where too much power is drawn and then either you want a high CPU speed or a high FSB, because there's not enough power for both.

The parts used on these boards are just not upto the task for such extreme speeds as some here are attempting.
Heat increases because of the heavy load, then with the heat the resistence increases and with that higher resistence the parts work less good. That's why the heatsinks on the mosfets help to some degree when running high VCores.

One thing ofd interest would also be:
What did you set the option "CPU FSB/DRAM ratio" in bios to??? I have mine running 6/6 all the time when FSB is higher than 200 MHz and it works very well. Some people reported big problems with other settings like 3/3 or even 1/1. Could be the problem but it's not definate.

ATM, I'm just attempting to exchange all voltage regulation caps on my NF7 rev.2.0 for better, higher rated one's and of course I'll report back if it helped stability, required the board still works then. :p:

[AKRedneck]

Good luck with the mods. I'll be curious to know if they work out. I also run the 6/6 ratio. It did seem to be the most stable when I was testing with memtest at fsb > 200.

[flesheatinvirus]

So you say 6/6 works good with your Corsair? I will have to try that as 240 seems to be the limit with my XMS 1.1 right now though I have not tried any of the new better bios out there yet. I would say this boards got issues with Voltage regulation at high clock combinations. My mobile 2500 has done 2610 benched with a A7N8X Deluxe at higher vcore but so far not on this board which leads me to believe its a power handling issue on the DFI with my setup. Its stable at 11x230=2535@ 1.750v though not prime tested yet.