What ICs in new XL Pro ram?

I'm guessing these use the same Samsung ICs in the OCZ EB stuff. They are advertised as capable of 2.5-3-3-7 at up to DDR500. What voltage? Hmmm, being Corsair is conservative with specs, I assume these are capable of 3-2-2- or 2.5-2-2-, same as the OCZ stuff? If so, at least these will bring prices down due to more manufacturer selection.

hey Clevor, OCZ EB use Micron different ICs, Corsair XMS3200XL use Samsung TCCD 4ns aparently their range is 220-225mhz 2-2-2-5/8 to 250-255mhz 2.5-3-3-7 with -/+ 5mhz standard deviation and don't like voltage like old BH-5/6. But they'll be a good alternative for most people who can't get hold of BH-5/6 I guess. Most people will fall within that 220-225mhz either via 1:1 or async dividers. As to the numbers XMS3200XL @ 2-2-2-5/6 timings and how they compare to BH-5/6 and CH-5/6 that remains to be seen. Only seen one review of them at legitreviews so far. Interesting to see XL's plug and frag technology their and platform/board compatibility XMS3200XL just became available at on Aussie retailer priceds just over the price of XMS4000 here in OZ, so I'm sure we'll see more results later once availability widens

ocz is also ising the new samsung 4ns on some of their new 3200 line.

Those timings looks like it might be useful for AMD guys, as most the boards are limited to 2.86-2.90 VDIMM unmodded. Many people are having trouble even hitting 220, 2-2-2-5 with decent BH-5/6. And as you all know, you can't stretch BH-5 to 250, 1:1 at 2.5-3-3-7. Not even at 2.5-4-4-7. Just won't do it. Heck my XMS3500 won't even run 2-2-2-6; it errors out in Memtest. Well, Samsung and Micron were bound to rise from the ashes. Still, to do 250, 1:1, 2-2-2-5, you still need BH-5 and lots of VDIMM. The only boards that will do this reliably are the early Epox boards, if you were fortunate enough to snag one.

yeah kisses my 4PCA3+ rev1.1 :) i just received a 2nd hand P4C800-E rev2.0 and compared it to my P4C800-E rev1.02 and rev2 seems to oc tight 2-2-2-6 timings higher than rev1.02 2x 512MB BH-5 sticks both revision boards unmodded rev1.02 = 214-215mhz 2-2-2-6 at 2.85v rev2.0 = 220mhz 2-2-2-6 at 2.85v so far

I just got rid of my Rev. 2.00 P4C800-D, even though I hit 307 fsb on it. Still testing my Rev. 1.02 but will get rid of that too and keep maybe one P4C800-E. According to my testing, the Rev. 2.00 might max out at 3.06 VDIMM under load and the 1.02 maybe 3.00. However did you notice the lousy VCORE on the Rev. 2.00? You will lose settings between 1.632-1.744! At least the 1.02 will yield 1.68-1.71 at 1.675. On both boards 1.625 and 1.65 don't quite work properly. After doing the VDIMM mods and testing my 300+ fsb CPUs, my enthusiasm for the Asus boards have diminished greatly. I've seen max 3.26 VDIMM at idle with the mod but under load it maxes at 3.0-3.06. I can only do 237, 1:1, 2-2-2-5 with my XMS3500, and at 5:4, it runs worse than w/o the mod. I haven't bothered with the droop mod as I believe it only helps the VCORE. Know anything about this Eva? VCORE of 1.744 idle drops to 1.68 under load. The Abit boards run 1.675 BIOS/idle to give 1.68. The Asus needs off fix right above 300 fsb, and needs at least 1.7 VAGP for stability. Still, the board cuts out once in a while due to the errant VCORE. The Asus boards are OK if you aren't modding, up to 288-290 fsb. They seem to have a lot of potential there. But after the mods results are disappointing, and stability and voltages take a second seat to Abit. There is no board that can match the early Epox boards for BH-5. My MachII GT is coming soon and the phase change will make up for the 5-8 mhz limiter, and I like the 3.3 true-blue VDIMM. I will first stick in the Rev. 1.1 4PCA3+ and see how high I can get limited to 1.55 VCORE, heh. I don't think very high, but maybe I will be surprised. Then I'll follow with the Rev. 2.0s I have that can go to 1.85.

yeah P4C800-E rev2.0 1.7v in bios under in windows is 1.616v! lower than that of rev1.02 board but still preliminary testing shows i'm reaching same max fsb oc's as before using rev1.02 just rev2 handles 2-2-2-6 a bit better You vdimm moded P4C800-E you have your psu 3.3v rail modded ? otherwise you won't be able go above 3.26v vdimm Trust me 4PCA3+ rev1.1 will be waste of time with prommy phase change my 4pca3+ gives me max 1.68-1.71v vcore with negative 1.45v vcore in bios but most P4s need >1.75v on prommy to really shine - reason why i haven't used 4PCA3+ rev1.1 on prommy. I'm sending away my p4c800-e rev2.0 interstate (one i finish testing it works on air as it's a 2nd hand board), to get full vdimm, droop moddded with molex read out attached (so no need to poke at the board to do vdimm, vAGP) readings heh btw, Mach GT taking that long to get to you! :eek:

[quote name='eva2000']You vdimm moded P4C800-E you have your psu 3.3v rail modded ? otherwise you won't be able go above 3.26v vdimm[/QUOTE] Don't need modded rails :): as I bumped the pots. I'm running 3.34 or something. What I'm saying is I get 3.26 at idle no problem, but it drops under load to 3.06. So does 3.16 and 3.06. Under load, max is 3.06. Maybe modded rails will help, but you will have to jack it up to 3.5 or something and that ain't good for the other components on the board. Just too much work, and I don't think the VTT is working properly either. Know many guys running 250, 1:1, 2-2-2-5 with modded Asus boards? I think one guy claims that but he is running 3.4 volts or something, I think directly wired to the ATX. You know how easy it is to get 3.26 on the Epox (just set 3.2 in the BIOS, heh). I do notice most the guys on Prommies run 1.75 or so. But I'll try the board anyway otherwise I was going to put it on the selling block. I also have a 2.60C and 3.2C that are outrageous at default volts and they might do something at 1.55. The MachII GTs are on backorder lots of places. I actually was going to cancel the order but I got a good shipping rate from one place.

So Eva, if my 2.40C does 277 fsb at 1.55 volts on air on the 4PCA3+, what will it do on the Prommie, same voltage?

yeah i know alot of people running >250-260+ 2-2-2-6 with P4C800-E at 3.4+ vdimm... i have a new PSU with adjustable rails 3.3v has 2.8-3.8v range :D so aiming for some new 260-270mhz 2-2-2-6 action with some BH-5 heh prommy will give you 20-35fsb extra over air (with max vcore you can give) generally this seems true for vcore >1.75v not sure about 1.55 vcore you'd probably gain to 300-305fsb (IIRC that's what you could do on water ?) 2.4C is limited... 300+ fsb = 3.6ghz while my 2.8C @280fsb on water and 2nd 2.8C @ 280fsb on air would be ideal for prommy 2.8C@300fsb = 4.2ghz :cool:

Hmmm, haven't heard of many guys at 250, 1:1 on the Asus boards. You probably have to do the direct wire, but good luck anyway. I no longer have the 2.40C that did 277 at 1.55 VCORE on the 4PCA3+. It did 287 on the Asus and Abit boards. The worse one I have now does 293 on air, but needs 1.675. I think at 1.55 it still did 285 or something. I have two others that do 305-307 but need 1.675 volts. Still, maybe 290 at 1.55 would mean maybe 310-315 with the Prommie, not bad. Looks like you have two good 2.80Cs there. My best one does maybe 270 on water but that fsb is lousy for ram as have to run 5:4 with BH-5 or PC4000 stuff. I'm just shooting for 289-290 with the Prommie as that's where I max out at 5:4, 2-2-2-5. That's barely 4 gig. No need 300 at 3:2 as I might get worse benches. We'll see :D:.

[QUOTE]Looks like you have two good 2.80Cs there. My best one does maybe 270 on water but that fsb is lousy for ram as have to run 5:4 with BH-5 or PC4000 stuff. [/QUOTE] Son of a gun. When I got home I finally got around to testing a 2.80C I got two weeks ago. It's a very rare non-MO step SL6WT, but with 30-caps, as it's a late L414Axx Malay. I did not want an MO as I've had poor luck with the 2.80Cs. So far I'm at 272 fsb or 3.81 gig at default voltage on the IS7-E, or 1.47-1.50 actual! Dare I say 280 fsb is assured, albeit with a tad more voltage? This is one well-behaved chip, so far has not failed Sandra Arith, Multi, PCMark2002, or Aquamark on the way up. I started at 250 fsb at default voltage and didn't dream I will be still there at 272 fsb and maybe more to go. I got a 37 sec SuperPI 1M time with PC4000! You'd think maybe at 2.5-4-3-6 but I'm running Vitesta at 272, 1:1, 3-4-4-7 as the Abit boards are not 3D stable much above 255 at the faster timings. Man the system seems quick, almost broke 15' in SuperPI 16M - have not done this yet even at 3.92 gig. I'm thinking you want 3.8+ gig with fsb over 270-280. Gonna pick me up another 2.60C this weekend. 3.8+ gig on that is 290+ fsb. May not get that high but maybe 3.7 gig at 285 fsb will still smoke.