[Jojo1971]

i have a 2.4c coming this saturday. it's been running at 3.6 at the previous owner's rig..

so for 300 FSB, i assume the ratio i will be using will be 5:4

.. now help me find a gig of killer DDR for it..should i get the black mushkin 3500 level II, corsair xms 3500, OCZ 4200 , OCZ 3500 platinum or OCZ 3700 gold?

im going to mod the vdimm..


any suggestions?


_____________
p4c800-E, 550W PSU, zalman cnps-7000 cu

[Mr. BoNeS]

Get the Mushkin 3500 level II or the OCZ Platnum 3500 LE


just curious...where you get the SL6Z3 from?

[Jojo1971]

just curious...where you get the SL6Z3 from?

from someone in AT forums.. it's the only one he got ..

[Speed_Mechanic2]

Your gonna need the extra volts from volt moding to get BH-5 memory to ~240MHz (in order to run ~300MHz FSB 5:4). Not all BH-5 memory will get this high, even with 3.2V, but it's the best chance to run ~DDR480 at 2-2-2 timings. If your extra risky, you could try to give it ~3.3V+, if you can, which could bring ~DDR500 speeds with 2-2-2 timings.

Though you might not get 300MHz FSB with air cooling, though the M0 steppings are quite capable overclocking with low vCore.

[batboy]

Yeah, that's going to be really tough to do with PC3500 BH-5 RAM. You might consider sacrificing a little bit in RAM timings and look at the OCZ PC3700 Gold. They should have no problem hitting those speeds and you can still get fairly decent timings with them.

[Thumper]

.....OCZ 3700 EL Gold is out of production for a little while now. I don't think you will find it, I would go with the Mushkin 3500 level II.........I see you have 2 H/D's, will you be running raid? Most cannot get to 300fsb because you start to lose the agp/pci lock around 295 with this mobo unless you use ClockGen..........

[Mr Gadget]

I see you have 2 H/D's, will you be running raid? Most cannot get to 300fsb because you start to lose the agp/pci lock around 295 with this mobo unless you use ClockGen..........

Eh? I thought one of the big advantages of using the 875 chipset was that the Intel raid controller was off the PCI bus? I am getting ready to pull the trigger on a new P4C800 - E Delux system that will use 2 Raptors in SATA Raid 0 on the ICH5 and 2 WD 250GB SATA Raid 1 on the PCI controller. Will this be a problem at 292 to 300 FSB?

Your gonna need the extra volts from volt moding to get BH-5 memory to ~240MHz (in order to run ~300MHz FSB 5:4). Not all BH-5 memory will get this high, even with 3.2V, but it's the best chance to run ~DDR480 at 2-2-2 timings.

I was planning on doing the Vdimm mod on the ASUS... If I run into trouble at 2-2-2 can I get it to run with relaxed timings or will I be forced to go to us the 3:2 divider? How much would performance suffer if I did go to 3:2?

It almost sounds like I might be better with a higher multiplier.

Good thread!

[oc_newbee]

Get urself some XMS pc3500c2 v1.1 winbond bh-5. Mine as well as a few other member got there up beyond 240 5:4 2,2,2,5 with 3.2v-3.3v.

Mine currently running at 247(494) 1:1 2,2,2,5 @ 3.3v 100% memtest86 stable of over 24hrs.

Now all I need is a proc that can take me up to 300fsb or more so I can take advantage of this ram. Unfortunately my current proc can only do 281-282fsb 100% prime95 and memtest stable.

[Thumper]

Originally posted by Mr Gadget


Eh? I thought one of the big advantages of using the 875 chipset was that the Intel raid controller was off the PCI bus? I am getting ready to pull the trigger on a new P4C800 - E Delux system that will use 2 Raptors in SATA Raid 0 on the ICH5 and 2 WD 250GB SATA Raid 1 on the PCI controller. Will this be a problem at 292 to 300 FSB?


Good thread!

.......many are finding that the agp/pci lock( which your ICH5 also locks with) is getting lost around 295fsb. With raid many have to stop at 295 but when tested with a ata 133 drive they get to 320fsb. Raid and/or sata does not like to be overclocked at all. The same goes with the ATI cards, you can clock higher with an old video card.........Using CockGen is 1 way of avioding the 295 bug. For me I rather have the Raid 0 with my Raptors at 293 then without it at 300fsb...............

[flapperhead]

any thought about runnin it 1-1 with some overvolted adata pc4000 or ocz 4200 gold? God id love to see what kinda scores youd get around 305-310 fsb even with loose timings..

[batboy]

Of course, there is no guarantee of 300 FSB with the 2.4C, in fact the majority of them can't go that high. I think average is more like 3.2 to 3.4 gig on air. I'm convinced that the 2.6C is a better match for most PC3500 RAM. I was only able to get 275 FSB (3.3 gig) out of my 2.4C using OCZ PC3500 EL RAM at the 5:4 ratio with tight timings (but I'm limited to a vmem of 2.8v).

[Mr Gadget]

Thanks for the input guys!
I was not aware of the PCI/AGP SATA issues. It sounds like I should be able to meet my target of 292 (3.5GHz) and still be able to use RAID and ATI 9800 PRO, given that I can find a 2.4C M0 that will clock that high!
I guess plan B, if I cant make it work, will be to eBay the 2.4C and go for a high multiplier chip which wont bench as well, but will allow use of the SATA Raid Arrays.
or plan C, buy Thumper's system which is basically what I am looking to build!
Well off to NewEgg and ZipZoomFly...
Thanks again!

[Amino]

I had some Kingston HyperX PC3500 running at 3:2 and was able to hit 285 with my 2.4C, so I'd recommend nothing else than Kingston branded memory. Cheaper than Corsair, and better IMHO.

[Thumper]

Originally posted by batboy
Of course, there is no guarantee of 300 FSB with the 2.4C, in fact the majority of them can't go that high. I think average is more like 3.2 to 3.4 gig on air. I'm convinced that the 2.6C is a better match for most PC3500 RAM. I was only able to get 275 FSB (3.3 gig) out of my 2.4C using OCZ PC3500 EL RAM at the 5:4 ratio with tight timings (but I'm limited to a vmem of 2.8v).

.........ditto ........................

[flapperhead]

Originally posted by batboy
Of course, there is no guarantee of 300 FSB with the 2.4C, in fact the majority of them can't go that high. I think average is more like 3.2 to 3.4 gig on air. I'm convinced that the 2.6C is a better match for most PC3500 RAM. I was only able to get 275 FSB (3.3 gig) out of my 2.4C using OCZ PC3500 EL RAM at the 5:4 ratio with tight timings (but I'm limited to a vmem of 2.8v).

just finished vmem modding my Ic7 last nite(what a pain).i have some pc4000 that'll run 290 and277 at 2.78v. see what kind of speed the additional voltage will produce. in addition im gonna get some bh5 sticks -see how well they run with massive voltage hitting their guts. should be an interesting 1-1 and 5/4 comparison