Xtreme Twinmos Memory!

[Formann]

Got a pair of Twinmos Speed Premium 512mb BH5 today.

Buning as we speak.

So far im at 251 2-2-2 3.36v memtest stable. 3.36v is max tho. 3.45 puts out some errors. Need to burn them in some more.

At 3.36v the mosfets on my DFI is 15-20c cooler than with TCCD @ 2.9v .. LOL.

TCCD draws a massive amount current compared to BH5. Diddnt think the difference was that big.

[cartmanea]

The DFI has a temperature sensor on the vDimm mosfet? Also, are you sure its the new BH-5 or is it just UTT chips?

[Formann]

The DFI has a temperature sensor on the vDimm mosfet? Also, are you sure its the new BH-5 or is it just UTT chips?

Nope.. I put a temp probe on the backside of the MOBO. Right behind the mosfets.

Im prette sure its BH5. Komplett.no got them yesterday, and acording to Twinmos they are.

[uwackme]

Ill prolly grab a set of the BH5's too, hope newegg gets them soon.

Interesting about the TCCD's, running lower voltage but dissipating roughly the same power would equate to higher current, and its the current ... P=I^2R that determines the mosfet temp. So if the design is happy with TCCD's it should be more happy with BH5's instead.

Was curious about how fast 2x 256M of the UTT's would be (though not practical for use, 512M of ram dont cut it) but for benching. Anyone get results for 2x256M UTT... esp on a NForce2 with high Vdimm.

[Formann]

It's because of the way that circuit works.

Using the 5V rail @ 2.8V will build up ALOT more heat from the mosfet than if it were @ 3.5V

Same setup as the DDR Booster.

Never heard of mofets getting varmer at lower voltage. Not the case with CPU vcore, and it feeds from the 12v rail.

My booster gets much warmer @ 3.7v than 3.0v.


EDIT: Did some testing with the 5v setting. 2x512mb Twinmos BH5

mosfets temps

2.88v - 56.6
3.17v - 57c
3.36 - 57.5

To be honest I, expected to se a bigger difference.

Ahh.. switching and linear. Of course. Thanks for pointing that out enzoR

Going to test with the TCCD in an hour or so.

[enzoR]

but the CPU vcore circuitry are switching. these are linear. the more voltage they have to step down the hotter they get but dont forget that the higher the voltage the more current the ram draws aswell. for the mosfet stepping down 5v to 2.8v will be like hell. if its drawing from the 3.3v it wont be that bad.

[anilyy]

what is the difference between 44D and 50D?

[J0lle]

what is the difference between 44D and 50D?

Its rated speeds 50D indicates 5ns (1000/5 = 200x2 = 400DDR)
44B in the other hand is 4,4ns (1000/4,4 = 227x2 = 454/455 DDR)

These chips are tested @ spd 225 mhz (ddr 450) by twinmos, afaik

[cartmanea]

They are still UTT, which is untested. 4.4ns is just what they are rated at.

[Skip]

i think the UTT means that winbond didn't do any testing. twinmos probably just rates them themselves.

[n00by]

Got a pair of Twinmos Speed Premium 512mb BH5 today.

pc3500 premiums i take it? So just to recap, all 3500 1a4t are BH-5s...

[Lumted]

I'm going to pick up a pair (PC3500 SpeedPremium's) from the same vendor (Komplett.no) Forman has gotten his sticks from later today. I could post some pictures if anyone is interested.

[gundamit]

Meanwhile ... back in the States, no SP 3500 to be had! But Newegg has dropped their price on SP 3200 512mb sticks to $55 with $1 shipping! Tempting.

[Lumted]

Here's a few shots. I've only got a 2mpix cam, so the detail isn't the best
Front side:

Back side:

Both sticks:

Closeup of one chip:

Sticker:


I thougth I'd let my RAMDogâ„¢ check out the sticks as well:

Checking the goods:

Paw of Approval:

[sparkie34]

Meanwhile ... back in the States, no SP 3500 to be had! But Newegg has dropped their price on SP 3200 512mb sticks to $55 with $1 shipping! Tempting.

Just grabbed 2 more myself. I can't believe the way the prices are falling!


BTW. The egg still has like 68 in stock.

[Zedex]

What PCB are the new Twinmos BH-5 sticks using?

[TEDY]

Jedec i think.

[KwaK]

well twinmos has introduced their memory products here lately . So when I heard that some twinmos rams have the BH-5 chips on them .. i paid their sales office a visit to check it out . Unfortunately , upon my inspection it had the M-tec chips on them and the 512 mb cl 2.5 stick were up for an amount equivalent to 50$ . Are they any good for overclocking ? Coz i heard someone say that the OCZ VX uses this same chip .. lol

[[XC] 4X4N]

any body oc the 2x256 twinmoss 256?

I'm new to the forum and was reading this thread. I don't see any reply's to this, so I will post what I have with 2x256 sticks. Using these a DFI NF4 Ultra-D, I was able to get to 245, 2-2-2-6@3.3v. More voltage did not get any higher. I now have 2x512 at 255, 2-2-2-6@3.4v. These are the old speed premium sticks AA4T with 44D chips.

[^don.k's^]

Anyone knows the "record" on 2x512 SP 3200??(something like 280 2-2-2 or so)

[Lord_RTKK]

My 2x512 Twinmos SP 44D do 270 2-2-2 with ~3.7v, but memtest has more or less 2 errors/pass, always in the same position, but prime95 passes for ours with this config...
The mobo is a NF4 Ultra D, of course...

[^don.k's^]

WTF! You got the best memory's on our order! Do you know me?Your memos went into my hands before they do in yours... Glad to see you here Lord!

[Lord_RTKK]

WTF! You got the best memory's on our order! Do you know me?Your memos went into my hands before they do in yours... Glad to see you here Lord!

Juasjuas, glad to see you too...
I have the best memories of the order?? Could be, but my 3200+ its a ing ... xDDD
I am waiting for Sandiego, FX57, 4200+, etc... One of this will be mine...

[^don.k's^]

Mines didn't go past 267 without a lot of errors, even at 3,8v , so yours are better BTW I you in superpi Let's see how will the 0450VPDW goes when it comes to me...

[Lord_RTKK]

Will you sell your 0448 SPAW?? It performs OK, not??
2770 Mhz are a good result tho, and air-cooled, if you mount a watercooling...
Mine dont passes from 2700, even with 1,95v