Think BH-5 can do 280 2-2-2-5?

[freecableguy]

I will be installing my VTT mod this weekend for my IC7-MAX3. My OCZ DDR Booster has been sitting by patiently for more than a month now (I was able to get one the first day they came out...lucky me). Once VTT is tracking I plan to go as high as 3.5 or maybe even 3.6V for 24/7 use with the 2*512MB Corsair XMS3500C2 v1.1 (BH-5) that I have had since the i875 chipset hit the market years ago.

Right now I can go as high as 250FSB 2-2-2-5 stable. No problems at all. Upping the Vdimm with the booster does no good as VTT continues to hover around 1.4V.

Any chance I will get to 280FSB 2-2-2-5 with this BH-5? Had anyone done this? Can it be done? Can I run 24/7 like that. I have some excellent active cooling for my RAM. They are not even warm to the touch right now.

If I can get to 280 FSB I can use a 14x for 3920Mhz...which would be a very sweet spot. Thanks for reading.

-Kris

[CTKP]

Originally posted by freecableguy
Right now I can go as high as 250FSB 2-2-2-5 stable. No problems at all. Upping the Vdimm with the booster does no good as VTT continues to hover around 1.4V.

How many volts does it take to do 250?

[freecableguy]

3.2V, no less

[saaya]

a good friend has a stick of bh6 thats does 270+ 2-2-2

but thats VERY rare! dont think your bh5 can do 280...

[freecableguy]

thanks for the encouraging words saaya :thumbsup:

[mikead_99]

It's not so much whether the RAM would do it, not saying it's a small feat by any means. The problem you are going to have before you get there is getting your nb/mobo to cooperate with 2-2-2-5 over 260 - 270. Not many people get much further on an 875 chipset, even with known killer sticks like saaya mentioned. Not in DC on 875. You might want to at least do some vddq/vagp modding while you have the soldering iron hot to help your cause out though. Hipro's all in one IC7 mods might help out.

[freecableguy]

NB voltage has already been bumped from 1.48 to 1.70V in preparation. That allowed me to run at 340x12 for fun if I wanted....hehe. Before I could not get over 303FSB.

[mikead_99]

Originally posted by freecableguy
NB voltage has already been bumped from 1.48 to 1.70V in preparation. That allowed me to run at 340x12 for fun if I wanted....hehe. Before I could not get over 303FSB.

I'm not knocking the effort, but I think the best I've ever seen 1:1 with 2-2-2-x on 875 is by macci and catch22atplay in the 270 range. Doesn't mean it hasn't/can't be done. Sounds like your board is a good candidate at least. Hope it works out for you.

[Soulburner]

Stinger ran 280 with his A64...I don't think the same sticks would do that on an Intel board.

[freecableguy]

So what's a more reasonable goal? In any case, I'm still shooting for my target speed of 280Mhz.

[lalPOOO]

I'd say it depends on the ram, on your cooling, on your board, and luck. Whats holding you back from answering your own question?

[Stinger]

"Stinger ran 280 with his A64...I don't think the same sticks would do that on an Intel board." And they worked even higher I'm at 283mhz 1:1 2-5-2-2 but as you said that is Amd

[enzoR]

have vagp at around 1.98volts, have everythihng properly heatsinked, n you might make it. good luck to you

[aoc007]

I think to get around 280 youd need more than 3.6v

[Soulburner]

Originally posted by aoc007
I think to get around 280 youd need more than 3.6v

My guess is 3.6v with an extremely good pair...probably in the 3.6-3.8 range though.

[Jack]

Originally posted by Stinger
"Stinger ran 280 with his A64...I don't think the same sticks would do that on an Intel board." And they worked even higher I'm at 283mhz 1:1 2-5-2-2 but as you said that is Amd

i know kakaroto has bh-5 that does 280mhz
but he has an A64 aswell...

280 1:1 on a P4 is gonna be tough though, i can tell you that... you can ask hipro
he modded the hell out of his board and still hit only about 267mhz 1:1

[lutjens]

I agree with the comment made about the motherboard being cooperative.

Even if the memory was willing to do it, the northbridge still must be willing to play ball and it may or may not be physically possible.

Best of luck though....you're going to need it...

[Cranox]

2-2-2-5 @ 280 fsb with 8KDA3+ with 2 sticks 256mb
100% stable @ 270 fsb ( maybe its stable @ higher speeds but i dare not to give it more then 3.8v .... )

[SAE]

Not the memory but the board will be limiting you...

I know it from my DFI (A XP)... and there's a limit around 272MHz max timings at 3.55V, increasing voltage does not help...

so you should definately take every important onboard component into consideration.

Good luck... you will be able to pull some nice clocks anyway :thumbsup: Around 265 is possible IMO.

[SAE]

Originally posted by Cranox
2-2-2-5 @ 280 fsb with 8KDA3+ with 2 sticks 256mb
100% stable @ 270 fsb ( maybe its stable @ higher speeds but i dare not to give it more then 3.8v .... )

3.8V ??!!?? Man, didn't ya fear - yeah fear - the death of your A64???

For how long did you run at that voltage? I mean, I would give it also 3.6V if I had an A64 BUT only if I could be sure it can take it... (fluctuations?!).

Is there anyone running a high vdimm 24/7 with a64 anyway?

[kakaroto]

280Mhz is achievable with BH-5, but only with rare ones.
Most BH5 craps out @3.6V around 260-270MHz.


Around 3.4V

I did 290MHz @3.7v need a stable board (*DFI )

[pkrew]

280 on an Intel dual channel is going to be very tough with bh-5. Best I've ever done was 271 at 3.7v and it was barely stable enough to run sandra. You'd need some great sticks, a lot of voltage, and some extra cooling for the ram.

The A64's do a little better, one because they're single channel and two because they tend to less agressive on the memory

[Soulburner]

Yeah 280 3.4v is amazing but its only a single 256mb stick.

DC is going to be pretty much impossible.

[aoc007]

Originally posted by Soulburner
My guess is 3.6v with an extremely good pair...probably in the 3.6-3.8 range though.

Hes talkin 2x512 here not 2x256, they always seem to need more voltage.

[kakaroto]

Originally posted by Soulburner
Yeah 280 3.4v is amazing but its only a single 256mb stick.

DC is going to be pretty much impossible.

most single channel BH5 users cannot do this. In DC it might need some more Vdimmm, still possible 280Mhz