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Has anyone tried running tRFC 12 with CH-UTT? Or atleast <15?
Just noticed my Speed Premiums run fine 200MHz 2-2-2-6-7-12 @ 3.1V.
(I didn't try any other voltages or HTT)
How much does tRFC impact to B/W? Memtest86+ 1.55's B/W didn't care about any given value.
My Twinmos SP 3200
3.1v in bios,
http://img121.echo.cx/img121/4120/img00446ip.th.jpg
http://img121.echo.cx/img121/5424/up4ly.th.jpg
:banana: :banana: :banana: :banana:
EDIT: sorry, I select CAS1.5 in bios :p:
Well, after fighting the cold boot issue the last few days, one of my twinmoss sticks is bad. I've been researching other peoples results/problems with these sticks, plus my own, and I think that the life of them is pretty short. I bought them on Feb 20th from newwegg and they have been great sticks, but I think running 3.4-3.5 volts for 24/7 is not a good idea. New memory every three months is not for me. I'm curious how long others have been able to run these with high voltage. Maybe I should start a new thread on that topic.
Well, that's the reason why those voltages are not guaranteed by Twinmos. ;)
What most people don't get is that those RAMs need really good cooling at voltages of >~3.0V. And for 3.2V and more, a fan only won't cut it IMHO. The heat that is produced by the chips gets too big and the chip-surface is not big enough to dissipate it fast enough. That's exactly why I would never use more than 3.2V on sticks without proper heatsinks on (and a fan blowing over them).
But sometimes even the heatsinks and fan won't help, as there will always be some modules that can't stand the volts, regardless of cooling (perhaps those sticks even would die at stock speed and volts; it'd just take longer I suppose). But hey, that's the risk of buying stuff that isn't guaranteed to run at the frequencies or voltages that you intend to run it at. As always, NO RISK NO FUN. :)
So I'd say, if you really want to run voltages in excess of 3.2V for a longer period without frying your RAM, get a big and powerful fan (not a quiet and small one) and get some heatsinks for let's say 6$ per stick. This way, you play it safe. If it dies although you did the best to aviod that, you know it really was bad RAM. But if you don't do that, you'll never know if it was bad RAM, or if you literally fried it. ;)
I have two 80mm fans blowing over the ram. I don't have a way to check the actual temp of the ram, but many times I would check with my fingers, and I never found them to be overly hot. I understand the risk in overclocking, just sharing my experience with others who are thinking about this ram.
Been working on SanDiego....
the 245Mhz AA4T TMII sticks I set aside for my brother are doing 260Mhz in memtest, and 250Mhz rock solid in Windows/3D/Prime. Im testing 250Mz x10 at the moment. These sticks peaked at 245Mhz 3D/240Mhz prime stable on my NForce2 system. Using 3.4Vdimm at the moment.
Wow. I have spent several hours trying to get my sticks to pass memtest at any speed/voltage, then finally I decided to pull them out and test each one individually, only then did I notice that I have one UTT and one BH-5. Both were ordered from newegg on the same day. I could boot into windows at 250 with both sticks installed, but it wasnt pi stable or 3dmark stable, although my applications ran fine. So I decided to pull the UTT and am testing the BH-5@250 2-2-2-5 w/ 3.4v memtest stable, havn't tried higher yet, I wanna play some games. I'll trade sticks after I'm done, see whats up.
So what do you guys think I should do? I want to run dual channel, so I would probably want to RMA the UTT stick, should I go through TwinMos or Newegg?
I'm maxing out at 250mhz, 2,2,2,7 @3.2 volts any ideas to increase? I'd like to get to 260 to 265. Whats the max safe 24/7 volts?
If this were true than i seriously doubt Mushkin would spec their Redline @ 3.5v (w/fan) or OCZ would spec their VX @ 3.3v (w/ no mention of a fan).Quote:
Originally Posted by celemine1Gig
:yepp:Quote:
Originally Posted by celemine1Gig
Ramsinks @ 3.2v~3.4v are overkill since i believe these Winbond chips are rated up to 3.6 volts. :2cents:Quote:
Originally Posted by celemine1Gig
WHY my Twinmos UTT AA4T can not do 2-2-2-5 ? Only possible in 3.0 v ???? :(
Simply: because they are untested CH-5, and they only do 2-2-2-5 over 3.1v (apart of magical sticks, of course...)Quote:
Originally Posted by vozbidder
If you need 2-2-2-5 at a low voltage you should go for BH-5 die or TCCD (always at low FSB´s..., if you need 2-2-2-5 at higher FSB´s, then BH-5 or CH-5 will work right, but with 3.4v+... :D )
Just got my 512mb stick of speed premium from newegg. It reads AA4T.
On the chips themselves they read this:
TwinMOS
05044
TMD7608F8E44D
and on the PCB they have B6U815. I was just curious if the PCB is brainpower or not. I think the chips are UTT because they have the two dots and all that stuff that UTT has.
Roy
they are UTT, but i don't think it's brainpower PCB good luck ocing them ;)Quote:
Originally Posted by icyroy05
@ icyroy05
You have the same stuff as me... TwinMOS SP with 44D chips... :toast:
Look at my signature :D :D you should be able to get 260+ with some volts on your sticks :D :toast:
Thats pretty cool considering I just upgraded from a pentium 1 200mhz computer. The memory alone can clock higher than my old machine.
At least this looks more promising than the mushkin blues I RMA'ed because they couldn't run at stock speeds no matter what I did. These do so far. It was a hassle getting the right memory but it looks like good things come to those who wait, or have a lot of money. I don't have a lot of money but I do have patience which is amazing for a 18 year old.
Roy
This is my situation too... :DQuote:
Originally Posted by icyroy05
I am 19yo and I am paying my hardware wastes working as a waiter at weekends... :rolleyes: :rolleyes: :rolleyes:
But when I swich on my DFI, I forget those things... :D :D :D
Tell us how those UTT perform... ;);)
First of all, I don't know I am posting in a right thread. I have some critical situation here. For the past 2 months, I could do 250Mhz without problem (256mb x 2 @ 3.5vdimm @2-2-2-2). Stable at all time. But, last night, I encountered a lot of problems.
I am running dual channel on orange slot on my DFI NF4 -ultra.
First: My comp keep on beep.........when I unplug the power core and plug it back. (Overclock) My comp can't even boot (Blank screen)It sounds like RAM problem.
Second: When running everyting on default (no overclock) my comp works find. Can run benchmark and everything. Even when I unplug the power core and plug it back again.
In tackleling the first situation: I took out a RAM stick (RAM A)from the orange slot (near to CPU) and leave one stick (RAM B) in another orange slot. (it can boot into windows and do benchmarking and running applications). Thus, RAM B is ok. Next I took out RAM B and replaced it with RAM A and the comp failed to boot and keep on beep....beep...beep........ My conclution was RAM A is faulty. But my conclution was contradicted with the second situation as above.
At first, I though it was BIOS issues, thus, I reflash my Bios to 310 (Official) and the same result occured. So, I reflashed it back to Bios 331-1 (Oscar Wu modded bios) So, my problems seems something related to pluging and unpluging the power core for overcloking.
I don't think my PSU is an issue here because when I tweak all the necessary setting in the CMOS to overclock my comp, I saved it and the comp restart and manage to load into windows. Under this circumstances, I managed to run some benchmarks but sometimes the comp would hang. Furthermore, if my PSU is the issues I don't think my casing fans (90mm, 80mm x 4) can work. All the casing fans are rated 12v to operate.
My doubts are:
1) Is one of my TwinMos SP is dying?
2) My Bios causing problem (But I am using 310(official) before I flashed it to 331-1)?
3) My DFI Board ?
4) My PSU ?
5) My RAM Slot ?
6) My CPU ?
Really appreciate for all the helps and I really need the assistance from all the expert here.
My Sig
----------------
Winnie 3000+ @ 2250mhz @ 1.52vcore (2 days ago)
DFI NF4 Ultra-D (Bios 331-1-Oscar Wu modded)
TwinMos SP AA4T (256mb x 2) @ 250Mhz @ 3.5vdim @2-2-2-2(2 days ago)
Gigabyte 6600GT 500/1000
LG DVD ROM 16 X
Gigabyte CD ROM 52 X
Panasonic Floppy
icute 420 watt PSU
EDIT: I think I am posting in a wrong thread. I encountered my problmes same as some members from same forum but different thread. But all members are welcome to give me some input on my problems. Thank you in advance
Well, I am suffering the SAME problems as you when I swich off the system from the PSU swich.
Now I am at school, and dont have time to explain. Later I will tell you my investigations about... ;)
Bye!
bought 2 sticks speed premium pc3500 (bh-5) of 512Mb the other day.
I'm still working with one stick which goes up to 258Mhz 2-2-2-5 3.5V, raising it to 3.6V or higher doesn't have any good effects.
The other stick couldn't even reach 200Mhz 2-2-2-5 at any voltage. If I used 2-3-2-5 I could go up to 250Mhz with 3.5V but wasn't good enough so RMA'd the stick.
Allready ordered some OCZ value sticks, 2 new SP PC3500 and not to forget the amazing Mushkin XP4000 Redline. I will keep the ones who hit 265 or higher, the other ones are for ebay :p:
:yepp: B6U815 is Brainpower PCB. Mushkin Blues has the same board.Quote:
Originally Posted by icyroy05
But don't get too excited, they don't do any good on Blues either.
And if I remember correct, Alonso mentioned TwinMos experimented with Brainpower. No gain for UTTs.
Thanks for the reply. Now I know I am not alone. Looking foward for your guide and investigation. TQQuote:
Originally Posted by Lord_RTKK
@longsiew: i'd say that is due to run a long time using 5V line to the memory, with the consecuent mosfet stress... :stick:
Just to see what 4x 512M of the cheapo UTT/VX Twinmos can do....
CPUZ validation... ID# 18496, look it up.
Working like a charm, though 2T and no BankInterleave is required so far to make 4 sticks play together.... 3.4Vdimm.
I've hit 230 memtest and prime stable with my winchester and 4x512mb of UTT-BH5 2-2-2-5 2T 3.2V with Bank Interleave on, so you should be able to squeeze a little more out of it.Quote:
Originally Posted by uwackme
TQ for the reply. But can you enlighten me on this. Does this mean my mosfet is faulty or my RAM is faulty? So how to remedy the mosfet problem. Last night I could run my comp and benchmarks at 260MHz with ONLY a stick of RAM. Of course, the performance is affected by this. My sisoft is at around 36** and it is half compared to dual channel which was around 71**.Quote:
Originally Posted by ^don.k's^