How vdd do I need?

[TheWeaseL]

Curious. I've seen some people hitting 250+ fsb with nf7-s board, but I'm wondering how much vdd they are pushing...Right now I'm at 1.9v, but I'm still burning in these new sticks of ram, so I haven't hit 230 where I was at with my last stick. Right now, my vdd mod will get me up to around 2.1v...Will that be enough to hit 250...assuming the ram will take me there...

[saaya]

from what ive seen it looks a bit like that:

1.6vdd=original fsb
1.7vdd=original fsb+10-15mhz (+10/15mhz)
1.8vdd=original fsb+20-25mhz (+10mhz)
1.9vdd=original fsb+30mhz (+5/10mhz)
2.0vdd=original fsb+35mhz (+5mhz)
2.1vdd=original fsb+40mhz (+5mhz)

[NoFuture]

I seriously think you should get after 1.9 without some serious cooling on you SB. With that much voltage, don't expect to keep you board alive very long.

[TheWeaseL]

Originally posted by saaya
from what ive seen it looks a bit like that:

1.6vdd=original fsb
1.7vdd=original fsb+10-15mhz (+10/15mhz)
1.8vdd=original fsb+20-25mhz (+10mhz)
1.9vdd=original fsb+30mhz (+5/10mhz)
2.0vdd=original fsb+35mhz (+5mhz)
2.1vdd=original fsb+40mhz (+5mhz)

When you say original fsb, do you mean 133, or what? Because I was able to go up to about 210~215 at 1.6v vdd...

And I'm wrong, right now, I'm running at about 2.1v...So I can actually push my vdd to 2.3ish. :)

Sadly, I'm not on water, I'm running the Microcool Northpole, which seems to be doing a really good job.

My SB has a heatsink from my EPoX 8K9A NB, which I lapped, and then I put a 40mm fan on it. Used AS Adhesive to hold it on. Mosfet cooling of course.

[saaya]

no, with original fsb i mean the max stable fsb you can get with 1.6vdd.

2.1vdd gives most people a 40mhz increase in fsb over their max fsb with 1.6vdd...

[TheWeaseL]

Originally posted by saaya
no, with original fsb i mean the max stable fsb you can get with 1.6vdd.

2.1vdd gives most people a 40mhz increase in fsb over their max fsb with 1.6vdd...

Ahhh, ok. I was like 133, and you needed more already...wtf...:p:

[Spec3]

2.1 or 2.2 is all you should need. If it doesn't get 250 at that voltage it's not the chipset holding you back

[saaya]

yeah, my nf7-s 2.0 does 215dc with def cooling, watercooling should be 220dc.

1.8vdd=230
1.9vdd=240
2.0vdd=245
2.1vdd=250

sounds good to me :)

[TheWeaseL]

I'm having ram problems now...

I have 2 sticks of pc3700 buffalo ram, bh-5 chips...Rated 3-4-4-8, running them at 2.5-4-4-7 right now, and w/3.0v vdimm, 2.0v vdd, 215 is the best I can do right now... :/

[saaya]

what multiplier? try to run 5x220 and then raise the fsb. if you can only run 5x215 its def your memory...

[TheWeaseL]

I had the multi down at 9.5, and this cpu will do 2300mhz at the vcore I have it at...

[texuspete00]

Originally posted by NoFuture
I seriously think you should get after 1.9 without some serious cooling on you SB. With that much voltage, don't expect to keep you board alive very long.

Passive sink here...... alive and well. Too bad my board stinks. I want it to die. Aint happenning. Cheap 600MHz celeron heatsink from compusa on northbridge.

I dont see those kinds of gains though. 40 MHz with +.5vdd, I dunno about that. I'm .34 over 1.6 for an additional 198->215. I thought ultra's hit higher originally and get dont need as many volts, and therefore gain a bit less. Although very worthwhile, on many ultra's wouldnt that mean like 220+40=260.

[saaya]

yepp, and thats what those lucky b4st4rds are getting indeed...
theres one japaneese guy who got 277dc stable :eek: that was with 2.4vdd though i think

and about your little gain with extra vdd... some nbs are maxxout out pretty quick and no extra voltage will help you get the fsb any higher...