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[oldfart]

For 845G, the Epox 4G4A is pretty hard to beat for $100. This gives you a 4:5 and 3:4 ratio for more fine tuning. For 845E, Epox 4BEA or Abit BD7II. The thng is, you can get the 845G for ~ the same price as the 845E, so I guess I'd have to say 845G is the way to go.

EDIT: You shouldn't go out buying a new mobo if you dont need to. What you have now is pretty good. I see you are now @ 150 FSB. Here is a very important question:

Is the CPU limiting your overclock, or is the PC2100 memory? How much Vcore do you need to get to 150 FSB? Here is what I would do. Use the 4:3 ratio to underclock the memory to take that out of the equation. Next, find out how high your CPU wll go. If you can get it up to 160+ or so FSB without too much Vcore, you have a good setup and dont need a new mobo. From there, you can get that good XMS memory and overclock while still using the 1:1 ratio.

 

[IntelInsideIdiotOutside]

Old, at FSB 150Mhz voltage is at auto. The only things changed are the timings, 2-2-2-5, and the cpu/mem freq from auto to 1:1.

I just tried to boot at FSB 160, starting at 1,525V-1,60V, it runs the bios test and when Windows needs to boot I get the blue error screen

Just saw Thugs uses 1,75V. Worth a try? or is that 2 high?

 

[oldfart]

I dont like going over 1.7, but 1.75 should be OK for a test. If you are going up in MHz and Vcore, keep an eye on your temps. I use a limit of 55C under full load, but thats me. When you went to 160 FSB, you went to a 4:3 ratio? Be sure you use that and set all your mem timings to slowest for the test. I think if you go to auto on the mem timings, it goes to 4:3? I'm not sure on that one.

 

[IntelInsideIdiotOutside]

160 FSB, CPU voltage @ 1,70

So now what? I think its clearly the mems holding me back right?
It looks absolutely stable now, I am currently doing the post at this speed and playin some music. CPU T @ 40 degrees celcius (104 F).

 

[IntelInsideIdiotOutside]

Yes Olfart, I got the default mem timings and the ratio set to 4:3, by the way thanks for helping man

 

[oldfart]

Ok, now we are getting somewhere. Keep the setup you have and run a Prime95 test for a few hrs and see if you are stable. If you are, it is your mem holding you back. With the new mem, you would be able to go 160 FSB, 1:1 DDR320, with fast cas timings. This would be a nice boost without the extra exp of a new mobo. You could also just get some much less $$ PC2700 since you would be running just below PC2700 speeds anyway.

 

[IntelInsideIdiotOutside]

Okidokey! I'll get back to you in few hours

 

[IntelInsideIdiotOutside]

After running 3 hours, I got 0 warnings and 0 errors. I guess the game is on aight!
Oh the temp was max at 54 degrees celcius, not bad right? Will be getting a better cooler, swiftec of something.

 

[oldfart]

Well, I would say 160 FSB sounds pretty good @ 1.7V. 54C is ok. With some new PC2700 ram, I think you will be in good shape.

 

[Barrei]

Why isn't it okay to run at 1.825 cpuv if your cpu temps never go above 51c load, and idle under 40c ?

 

[flawedexistence]

Thanks Thugsrook

 

[THUGSROOK]

Barrei youll fry the cpu - reguardless of temps.

ive fried one, Duvies fried one - dont go over 1.75v even if you have great cooling.

 

[Barrei]

Thugs when did you fry one , I don't recall you saying anything , I asked this question in a post about a month ago and " What is the MAXIMUM cpuv you can consistently run your cpu at " and your reply was 1.85v .Have you fried the 1.6a cpu that did 180 - 190 fsb ?

 

[THUGSROOK]

at the time it was a 1.8A. Duvie's was also a 1.8A.
i dont feel like fryin another - 1.75v max

 

[SupermanCK]

I had my 1.6A running at 1.85v (wire mod and ov jumpered)...actually 1.888 idle and 1.808 load...still running good...but i didn't run it that high for a long period of time...i just tried it to see if i can run it at 2.560 160FSB and DDR426.8...but it's not stable...so i backed down to 150FSB...155 wasn't completely stable because it won't run prime for long...i guess i will keep my vcore @1.70, since i don't have as much money as thugsrook and some other crazy money makers with money making machine down in their basement...
but i just ordered a 1.6a from newegg before they ran out...sux i had to pay tax...so it ended up $151...that's about how much i paid for mine in early FEB...

 

[IntelInsideIdiotOutside]

its fun to run your cpu sky high for a few tests, but just plain insane to let it run very overclocked for ever, it just life that long

 

[kckev]

Thugs, does ur P4B533 has 4:5 memory ratio????

 

[KinkedHose]

Thugs...or anyone else...I have been looking for the P4B533 but cant find one anywhere. It seems that the VM is available everywhere you look, plus it is a bit cheaper (I know...in general you get what you pay for...). Any idea how this board stacks up? I browsed through the posts here but dont remember seeing anything.

I just ordered a 1.6A...trying to get on the boat b4 they are all gone. Figures that Intel would discontinue the thing...

Anyway, any info you could give me would be GREATLY appreciated...

 

[Egrimm]

I just got a P4 1.6A and an Asus P4B533-E and currently run 2400 @ 1.525v (could prolly do it with stock vcore too but as I plan to up it more I figure I could slowly raise the voltage).
Only got one problem with the mobo, it won't accept my 512Mb Kingston ValueRam (crappy for oc'ing I know, but a leftover from one of my Athlon boxes) with Infineon chips. Use a 256Mb module now, also Kingston but with Samsung chips. Anybody have an idea why it won't run (doesn't start at all) with the 512Mb block?

Thanks Thug for convincing me to get a 1.6A and that mobo. I'm glad I switched back to Intel. Don't get me wrong, I still like AMD, but not Via as my KT266A mobo sometimes got unstable whereas this Intel-mobo is stable like a rock.

KinkedHose, as I live in Denmark I got it from a Danish shop, SHG, they've got both the mobo and cpu in stock. Don't know if they ship internationally though.

 

[SupermanCK]

Egrimm The Kingston ValueRam probably won't run at 150FSB...try upping the Vmem and setting all the cas setting to the slowest possible...if it still doesn't run...try lowering you FSB...ValueRam is not good for overclocking...

 

[Egrimm]

Originally posted by: SupermanCK
Egrimm The Kingston ValueRam probably won't run at 150FSB...try upping the Vmem and setting all the cas setting to the slowest possible...if it still doesn't run...try lowering you FSB...ValueRam is not good for overclocking...

Didn't I say that myself? (that it wasn't good). I know that it will run 150fsb (ran 153 stable with my Athlon) but that's not the point: it will not boot at all even at stock speed with the 512Mb module installed! But it runs fine with the 256Mb module with Samsung chips, but to be sure I run 4:3 now. Currently at 2560Mhz (160fsb) and 1.7v (to be sure it's stable, will try to raise the fsb further but keep the vcore)

 

[SupermanCK]

Sorry..i didn't know you can run it at 153 with your old systme...you might have fried your mem in the process...to check...put it back to you old system or a working system

 

[Egrimm]

Originally posted by: SupermanCK
Sorry..i didn't know you can run it at 153 with your old systme...you might have fried your mem in the process...to check...put it back to you old system or a working system

Of course you couldn't know that it worked at high fsb. I fried one module though (had two), or at least it mysteriously stopped working one day.

The module I'm speaking of works fine though, it's in my Sis735/Duron 1Ghz rig right now and works flawlessly. That's what I find odd, it just won't work in the P4B533-E mobo but works fine in another.

 

[THUGSROOK]

KinkedHose the P4B533-VM is crap for overclocking.

 

[SupermanCK]

VM version is cheaper because M stands for micro version...meaning you have like 1-3 pci slots...instead of 5-6...