Xtreme Twinmos Memory!

[NajZ]

@uwackme

I really wanted to know how the h3ll you got your sticks working in DC and with CPC ON @ 250 with NF2? I am completely baffed. I recently got some UTT ram (dunno whether BH or CH) but i can only maxout at 210 DC with 4 Banks of mem and CPC on. This is only acheivable at high vdimm also around 3.3v. Even if i run 1 stick with CPC on i only get around 215 after that memtest locks up on test5 no matter what voltage, high or low.

Each stick can do 245fsb SuperPi 32m stable with CPC OFF and 3.5v.

Do i need this twinmos AA4T mem (i.e. CH UTT) will this mem allow me to use CPCon

[Hemingway]

You need to raise your Vmem Also, as I remember that MB did have dividers for the FSB/PCI... use 5/1 divider for above 166Mhz.

One other note: On an A64 system the memory controller is part of the CPU so CAS1.5 is more likely... and on a good OC board much higher Vmem is available than on that Shuttle.

Peace

Yes, this motherboard has the 5:1 divider, but it is useless above 166fsb. 166/5 =33 Any higher than 166 is increasing the PCI bus to more than 33mhz, which is no good.
What I need is a PCI LOCK, which will lock it at 33mhz.

[EMC2]

Any higher than 166 is increasing the PCI bus to more than 33mhz, which is no good. What I need is a PCI LOCK, which will lock it at 33mhz.

Never had a PCI card or HD that wouldn't push into the mid 40s... when KT266 based boards first came out, many were pushed even higher

[Raybo]

Like MC2 said, I use to run my KT333's PCI upwards of 40 mhz, mostly depends on how well your HD will take it. ( ghost your OS before you really try to push it or else )

[uwackme]

Naj,

I've been working on it, tweaking away, for months. Spent a zillion hours on NF7-S before going Infinity. Infinity(LPuB too) has the best Vdimm circuit out there in NForce2-land. Also the NB and SB chips have seperate Vdd supplies, so the NB can get hit harder without roasting the SB.

My Vdd is actually about 1.95V, but the exact Vdd you want varies by the chip you have, only testing will let you find the sweet spot. My NF7-S liked 1.85V....1.825+under or 1.875+up would result in errors at lower FSB memtest#5 than exactly 1.85Vdd.

The Vdimm circuit is great, easy to Vmod too for higher operation. I can go to 3.8V if needed. It's based off the 5V rail, unlike most NForce2's which use the 3.3V rail. Also, I have my 3.3V rail set to 3.5V....since the NB chip uses both Vdd _and_ the 3.3Vrail as power sources, having the 3.3V rail goosed a little seemed to help get that last bit out of the system.

I lapped my NB, sanded with 1000grit paper till it was FLAT...the NB plastic is cupped and wont give best cooling without treatment. I use a Swiftech157 heatsink on it, though a NB1-C would be great as well.

The OCZ Powerstream 520W is also in on the 250Mhz achievement. Also my 2600+ chip is a damn good one, which is critical. On my lapped/polished Alpha8045 heatsink it will do 2680Mhz hitting 55C load. i've got the Vcore and Vdroop mod's installed, as well as the over-current mod which involves replacing 3 SMD resistors inthe Vcore circuit.

Beyond that, its the memory specs in my sig...all the settings are listed. Mind you, I have gone through 7 sets of these Twinmos UTT's....5 TMII 2 SP's... 1 set would NOT do 1T (Cpcon) but would do 245Mhz 2T, 5 sets would do 245Mhz 1T @ 3.4V, and this set Im using does 250Mhz 1T @3.5Vdimm. So it took some digging.

I have 2 120mm intake fans blowing cool air on the board/ram/etc, an a 120mm exhaust. The case is a good one but heavy.

All these things add up, takes alot of tweaking.

I would add, memtest FREEZING is usually due to too low a Vcore setting. I'd try the 1.775-1.85V area when going for the high FSB's. You can always slowly back DOWN once you havefound the memory's max. You can definitely end up with sticks (rarely but happens) that wont do 240+Mhz 1T.

[HydroX]

well, today, i'm testing the twinmos value mtec ( 1A4T ). why the result is so crappy ? in 200 / 2-2-2-5 @ 3.3V, it can't finish superpi, and then thousands error @ 3.6V / 235 MHz. So....why ?

[jhatfie]

Just got me two 512MB sticks of the Speed Premium. Testing them out so far, 10 loops of Memtest gave me 40 errors at 250mhz (2-2-2-8) @ 3.3v. hopefully some burn in will correct that. Funny thing is that at the same speed, my super pi times did not really drop compared to my TCCD's with 2.5-3-3-8 timings. I am sure there is just some tweaking I need to do on my DFI NF3 250GB.

[NajZ]

@uwackme

Thanks for that, i can understand it takes a lot of tweaking. At least it paid off

Anyway im going to try these sticks in my friends DFI NF4 to see what they are really capable off. I'll get some idea into what is holding me back, mem or chipset.

This is my third DFI NF2 board btw, I already killed 2 boards before. They were reeeeally sweet ones as well. This one isn't as good as the others.

I remember you saying that BH-5 can't do DC with 1t but CH-5 can on NF2.
I think im gonna try some AA4T ram first.

[reject]

well, today, i'm testing the twinmos value mtec ( 1A4T ). why the result is so crappy ? in 200 / 2-2-2-5 @ 3.3V, it can't finish superpi, and then thousands error @ 3.6V / 235 MHz. So....why ?

try running cpc off bios

[Gray Mole]

I've just ordered a set of the BH5's in speed premium, so next week will test...

All the feedback on both the Bh5's and the UTT ch5's is a lotta help though, nice to see ppl still pushin' at the old skool stuff

I'm still using an old set of Twinmos's BH5 in 2X256, and it's running 255htt and cas1.5-2-2-5 with no problems at all, so I'm hoping that I can burn in the new stuff and get similar or better results, with the Brainpower PCB being an improvement over PCB's of old...

Gotta remember, it's still CH5 and BH5 we're playing with, and I've had BH5's in the past wouldn't give me 2-2-2-5 at 200mhz, much less any higher, and My old 3500 ocz CH5 based 2X512 wouldn't stretch past 245 at 2-2-2-5 (3.3v), so into the kid's PC it went

Point is, even though the BH5 and CH5/utt on improved PCB SHOULD be a lot better, and the old stuff was pretty wikked, it's still hit or miss what you're gonna get...

I'm gonna see what this new set will do, but my old BH5 has had what? 10,000 hours of burn-in? lol Might take a little while to get 'em going...

Gray

[uwackme]

Naj, I'd give the AA4T's a try, this "new" CH5 based stuff has seriously been improved. I have BH5 that wil not run 1T on any NForce2's at all, but will on A64. The BH5 and NForce2 just dont get along well for MAX FSB except for rare examples.

[Gray Mole]

Yeah, the NF2's had some issues with bh5 and fsb in some cases, but more often issues with high fsb and 512 modules...

The last XP NF2 rig I ran had these same Twinmos BH5's in it, and they ran 245fsb with no problem (NF7 and AN7) Whereas neither one could break 225fsb with 512's unless I turned CPC off, which I'm not all that inclined to do...The DFI board would kill it on FSB, but overall speed was pwned by abit, period...(maybe 'cept for Epox...and LN2 )

I can't really see an 'improved' BH5 or CH5 chip being made, or they'd call it something else...An improved yeild, sure, but different?

The PCB I think is where the biggest improvement is coming from...but time and more importantly 'burn-in' time will tell...

Gray

[exe]

I just got my SP today I got the AA4T 05064 44D but why I dont have brain power PCB??
Which one I got?

[Raybo]

The Twinmos does not come on BP PCB.
Try Mushkin Blue line if you want BP.

[Gray Mole]

I've only seen piccys confirming the 1A4T BH-5 version on BP PCB, this thread http://www.xtremesystems.org/forums/...ad.php?t=50010 confirms that both UTT and BH5 version come on Brainpower...just scroll down to Twinmos...what week/year is that memory? Maybe it's an early version? Week 46/2004 and later are supposed to come on BP...

Gray

[Raybo]

Am I wrong again?

Sorry if I gave you the wrong information.

[Gray Mole]

That's just it, mate, you might not be...

And that raises some interesting questions...

Some are having great clocks out of the BH5 and UTT, and some aren't...Might it be because some of the Twinmos is coming on some other PCB, and some on Brainpower?

Be something to confirm when you get it from your supplier, and when mine comes next week, that's the first thing I'll be checking...

Gray

[exe]

IVE TESTED MY MODULES SEPARATE AND GOT ONE THAT GIVES ME ERRORS @ MEMTEST #7 2.5-3-3-8 2.6 BUT @ 3.0 IS GOOD TO GO, RIGTH NOW IVE GOT THEM RUNNING @ 2-2-2-6/3.4v 200MHz. IM NOT SURE IF I SHOULD RMA THAT STICK TO NEWEGG SINCE IM NOT GONNA BE RUNNING @ STOCK SPEEDS OR VOLTAGE AND SINCE NEWEGG RAN OUT OF STICKS.

[Gray Mole]

Well since you've got 'em in anyway, just set 'em up around stock, and loop test 5 for a couple hours, and slowly come up from there...

I usually go straight to around 3.2 volts or so, get just under the max I can, and run test 5, or just loop the works, until they start to give, but you can break them in any way you like

Try to burn 'em in and if they just won't budge, rma...

Gray

[Shroomalistic]

I have yet to see any twinmos utt(ch/bh) on bp pcb. They all come on the ko-6633 pcb. only the non utt come on bp pcb.

[Gray Mole]

mmm...

The actual ram I ordered is the 3500 Speed Prem BH-5 version...

I don't know if that'll make a difference to the 3200 or not...

I'll know in 3-4 working days

[exe]

the pc3200 is ch-5

[Gray Mole]

Yep...I just figured that ALL the newest Twinmos SP would be on BP PCB...

Guess not...

Gray

[longsiew]

Anybody in SE Asia can get the TwinMOS Speed Premium here...

Dual-Ch PC3200 512MB 256MBx2 (Speed Premium)- Singapore Dollar 155.00

Dual-Ch PC3200 1GB 512MBx2 (Speed Premium)- Singapore Dollar 299.00

http://www.twinmos.com.sg/ebuy/prodV...p?idproduct=91

As at yesterday (24/4/05) Dual channel PC3200 512MBx2
(Speed Premium) is Singapore Dollar 125.00

Dual Channel PC3200 1GB 512MBx2 (Speed Premium) is Singapore Dollar 249.00

[longsiew]

phew i live in singapore, tml gonna go down to twinmos office to chose the rams
jus a recap, AA4T for the p/n
and 04464 or after week 46
and the 2 obvious dots, and it'll be done right?

finally can get rid of my hynix dt d43, damn loose timings

btw i still dun understand the 2 metal dots on each side thingy

I also live in Singapore. May I know is TwinMos office open for business on Saturday after 2pm. As I am working office hour and got no time to go to the office. I can go on Saturday after 2pm if TwinMos is still open for business. I tried to get DC PC 3500 Speed Premium 512MB x 2. I went to SLQ last Saturday and could not find any PC3500 SP. TQ