Got a kit of Transcend Jetram PC6400. Running them at 1066Mhz 5-5-4-15 2,05v. Was the cheapest kit i could find:D
Pictures coming soon.
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Got a kit of Transcend Jetram PC6400. Running them at 1066Mhz 5-5-4-15 2,05v. Was the cheapest kit i could find:D
Pictures coming soon.
I want a close to the chips so that i can tell you what are on those.
it is the same chips like AxeRam... N for micron and so on...
so if they need 2.05 for 1066 propably they are not microns...
They could have Powerchips. Cheap and running great under low voltages.
Do they overclock better with more voltage?
From your picture=>Powerchips definitely.
What is the price of them? Also part code end in 'P'.
I wonder if you could fine any part ending to 'N' or 'E'.
If yes and look at the chips we would know what will be in the upcoming 1066 AxeRam 2x2GB ones
price 53€ for 800 and 49,90 for 667.
Great price great overclockers from great company.
If you could go again at the store check if there are others with another last
digit of barcode.
i will check on monday :P i work in pc store where we sell it lol :)
what should i check for?
Check this in circle. Yours ends with 'P'. Look if other kits end with something else
like N,E,M etc.
http://www.imageshack.gr/files/4mshaajfvnanede7c0jk.jpg
what those means?
These are for 2x1GB and i suppose they are same for 2x2GB kits:
Micron ('N' behind barcode)
ProMOS ('M' behind barcode)
Nanya ('Y' behind barcode)
Powerchip ('P' behind barcode)
Elpida ('E' behind barcode)
Here come some pictures as promised. Mine have powerchips then.
http://img511.imageshack.us/img511/7424/1066mh6.th.jpg
http://img441.imageshack.us/img441/3...1037nw7.th.jpg
This is the No1 choice compared to other powerchips G.Skill/Muskin PC6400/8000.
Quote:
Originally Posted by Dr.Leary
Looking nice.
Did you already test with Memtest+ 2.01 or Goldmemory? Windows based Memtest is OK, no questions asked, but it's not the optimum.
Looks great ;) Tedy test it & report :P
Hi all.
A local store has a 2x2Gb dual channel kit of JM4GDDR2-8K for 64€ (really cheap where i live),
i read above that one could know what chips they have by the letter in the barcode.
But which are best for OC and which are not so good?
Thx.
As for now we know only for Powerchips.
So if you wanna try another chip it could be helpful.
If not stick with 'P'.
So it's monday... tedy report what did u find in "your" store? :D
all "P". 667 and 800 models.
Hi.
By the pictures in their site seems like the ones that Newegg has are also 'P's.
In Transcend's site are Dual Channel kit packages that are different from the ones posted here, Dr. Leary you bought two separate sticks right?
Can they run Cas 4 and at what speed?
No, I bought a 4 gig kit. I havnīt tried Cas 4 that much because they donīt seem to like it.Quote:
Originally Posted by zArt
They could do CAS 4 at 400 i am sure.
Yes they do, but I prefer 1066 CAS 5 :)
Of course is better my friend.
i also checked 1gb sticks 667 and 800 mostly "P", 1 was "E".
checked also AXERAM 800 and 1066 all "N".
The Axeram 2x1GB with N have D9GMH if you want to sell them to friends.
So there is no 2x2GB with other than powerchips. Thx mate.
imagine 2x1gb axeram 800 with such good price :P
Well, anyway there are CSX 4GB kits that costs less than 100EUR and can hit very high speeds. These do have Powerchips.
So is safe to assume that if i buy a 2x2 Gb kit i'll get those Powerchips right?
What about the overclockability, would i have the same OC as Doc? I was 'eyeing' a 2x1 Gb OCZ Platinum XTC pc6400 for 48€ but Jetram costs only 16€ more.
Thx to everyone.
Dear Dr.Leary,Quote:
Originally Posted by Dr.Leary
can you post all your timings please. I am trying to hit 1066 DDR2 with the same DIMM-s. They can do DDR2 1000 so far, on : 2V, CL5, PL13 (tRFC=50).
With Powerchips anything from 520+@5-5-5-15 can be guaranteed.
I can even go a bit higher, but not much.
http://img507.imageshack.us/img507/7842/1066oi1.jpg
http://img507.imageshack.us/img507/7...d8a0413392.jpg
I'm currently running Vista Business 32 bit SP1 with 2 x 1gb Team Xtreem @ 4-4-4-8 450fsb.
This ram seems so intriguing and the price is right ($75 free ship) @ the Egg for 2 x 2gb.
My question is will I see the same/better/or worse performance in going to this ram at 5-5-5-15 450fsb as it is 4gb but vista may only recognize 3gb.
Thanks!
From what i've seen 5-5-5-15 above 500 will outperform the lower timings.
cya.
First you do have additional 2GB which is more important.
Second 450@4-4-4-12 is almost identical to 530@5-5-5-15.
So if you are e.g. 8x450@1:1@4-4-4-12 then 8x450@5:6@540-5-5-5-15 is faster.
Is that memory the same as this?
http://www.newegg.com/Product/Produc...pk=JM4GDDR2-8K
Are these PQI sticks the same powerchips too? Same price/look on newegg:
http://www.newegg.com/Product/Produc...82E16820141337
As for now i have not seen any other except Powerchips.
In the large pics of the product you can see that the label on them has the 'P',Quote:
Originally Posted by Khalmyr
but thats just a reference pic though.
I would call newegg and ask them.
Cya.
Ok, bit the bullet and ordered a pair from Chiefvalue.com since they were a dollar cheaper than the Egg and had free shipping. The 1.8v spec seems to preconfirm powerchips:
http://www.chiefvalue.com/product-_-...00153596010060
Chiefvalue Transcend Jetram 2 x 2gb pc6400 kit arrived.
Powerchips.
5-5-5-15 easy 450fsb 1.8v.
Will get around to tinkering with the timings later...but doesn't like cas 4.
EDIT: Motherboard bios doesn't support 5:6 or 4:5 ratio, bummer. So am settling for 5-5-5-12 2T 450fsb 1.8v for 9 x 450fsb = 4ghz...
mine were supposed to have arrived today :/
meh
Hi!
New here at the forums and the reason I became a member was to thank everyone here for pointing me in the direction of these memories that are just great. I am currently using 2x2gig powerchips and am running them at 1000mhz@5-5-5-15-2T@2.05v.
Ran each stick separately in memtest+ 2.01 before running them at the oc in dual-channel and ran another memtest in order to make sure that everything is stable and so far not a single problem.
Bought these in Sweden and the reason I could do that and be sure that I would recieve powerchips are because the author of this thread Dr.Leary :)
Here is a pic of the package that came to my house (2x)
http://img404.imageshack.us/img404/3...0156ii2.th.jpg
I´m glad to be able to help. What tRFC are you running?
since I left all the subtimings on auto, everest reports 64t.
Then you probebly can go a bit higher than 1000mhz!?
nah that's ok. I'm ok with 1000 since the crucial ballistix 8500 i had before died at at the same speed and timings at 2.2v.
can someone give me a hand here?
i've never messed with sub-timmings before, and my ram doesn't want to stay at 1000mhz even at 2.2v
it works just fine at 800mhz 5-5-5-15 1.8v
800mhz 4-4-4-12 2.2v and 1000mhz 5-5-5-15 2.2v won't work..
I've tried 1:1, 2:3, 3:4, 4:5 and just can't figure out..
so I downloaded memset to try to figure out something but i couldn't really.. I've used the timmings in Dr.Leary post but it only makes it last a bit longer in Orthos...
anyway, in this pic i've set 5-5-5-15 and the rest on auto on the bios.. If anyone could help it'd be very appreciated.
thanks in advance!
http://img245.imageshack.us/img245/4429/57516132yu5.jpg
Is it sticks with the "P" for powerchips on as showed in pictures posted on earlier posts?
http://img405.imageshack.us/img405/6...cenduh4.th.png
It seem you have a different ram then the ones we got.
Yes it is the stick with "P" on them.. it's the exact same kit being sold on newegg (JM4GDDR2-8K)
edit: maybe I just don't know this board well enough yet...
been running OCCT at 450mhz 5-5-5-15 1.8v for an hour now
seems to like the 5:6 divisor
all sub timmings on auto
This is the one I got
http://img297.imageshack.us/img297/2...9204us2.th.jpg
edit:
it just won't work at 1000mhz...
even at 5-6-6-18
if I set vmem +0.2 at bios, it gives me 2v at idle and 1.9v at full load... occt lasts about an hour then..
if I set vmem +0.3 at bios, it gives me 2.11v at idle and 2.1v at full load... occt doesn't last 1 minute like this...
this is so very weird.. i think it's my mobo... but i don't have any other mobos to try it on. damn why did i have to buy this cheap motherboard
I think you have a different batch of the powerchips, because the difference I was pointing out in my screenshot of my spd in cpu-z is that mine have a spd standard of 5-5-5-18 in 400mhz while yours have 5-5-5-16.
That is different and if you look at your date cpu-z you'll see that they were created 2007 while mine and dr.learys are made in 2008 since we live in the same country of sweden. Simply you might have old powerchips while we have a newer revision of the powerchips.
It would seem that date matters when it comes to these sticks of ram.
edit: I have the same board and it works :p
hm.. sucks for me eh?
what sub-timmings did you set at the bios?
also, what bios are you using? i'm on F10, but will flash F12 tonight
edit: been running at 1000mhz for 1 hour now @ 1.96v. but the timmings suck... if i try and raise the voltage more, it gets worse.
http://img231.imageshack.us/img231/6712/timmingswl6.jpg
I think that you might have to settle for less than 1000 in your case because if it can't do 1000 at 5-5-5-15 2v then you can't no matter the settings in bios but if I remember with the f10 bios is that the subtimings setting are different so to upgrade to f12 isn't a bad idea, give it a shot. Just remember to clear cmos manually after the bios upgrade right after the upgrade. And don't use the windows update tool use the dos based and if you have a diskette or a boot cd use that instead.
Hope it works out for ya.
@Khalmyr: where did you buy those sticks? from aria.co.uk by any chance?
Nah, I live in Brazil. Bought them around here.
ah ok, Im thinking of buying those sticks from aria.co.uk and just to make sure Im not getting the same "old" batchQuote:
Originally Posted by Khalmyr
cheers :D
hahaha
yeah, i wouldn't want the sticks i got if i were to buy them again =P
by the way
was anyone able to run them at 4-4-4-X and to they get any improvements with 2.2v+?
If with 1.9v last occt longer then i think it is a temp issue.
Your timings with 5-5-5-15 screenshot are ok and a bit loosen,
so there is no problem. Put a fan over them to test any difference and
report back.
it wasn't temp...
anyway, i found out what's holding me back.
this is the best I can do:
http://img413.imageshack.us/img413/4641/timmingstm6.jpg
6 hours of orthos stable.
so I guess tRCD doesn't like me. as long as it's 6 from 500mhz on, it will be fine.
not quite what I expected, but I guess it's ok.
1000mhz 5-6-4-15 2T 1.95v
higher voltage doesn't help either.
weird IC's....
now since i don't really understand much of timmings, my question is: is tRCD being left at 6 a big deal?
anyone?
What Drive Strength settings does Intel/your board offer? Set them to low/weak, whatever. If more Voltage doesnt help it might be a sign of too high Drive Strengths. Didnt read whole thread but I assume you already played with NB Voltages right.
Also, not entirely sure, I didnt see that MCHBAR to be 'on' on other Intel OC Memset screens? As I said, not 100% sure, Ive no clue about Intel really.
yeah i did try raising the vmch
No idea what you mean by "drive strength" though
Sorry to say it seems you have a weaker batch. I don´t think your pair will go much higher regardless what you do. Thats the way it is in the world of of overclocking. You can´t really be sure of what you get.
dang
if all those memories use the same Powerchips ICs how can there be some so much better than others?
i can't even do 800 4-4-4-12 2.3v
at least it goes up to 920 5-5-5-15 1.8v
thanks everyone.
The thing is that they are not the same ic's only named powerchips. Just like micron have several d9's, powerchips have other revisions of well... powerchips.
Think of as different chips altogether and go from there, simply put; results will be totally different.
But it's a damn shame in your case. I would recommend people to buy single modules that have the same case-color as the one in my earlier post. And I do believe that the date is stamped onto the ic's themselves as 0804 or something like that.
can you run 800 4-4-4-12?
nah having faster ram in mhz is better than timings or at least the same.
Got one set today :)
Some preliminary testing
http://s2.supload.com/thumbs/default...hz_1026mhz.JPG
Image Hosting
yep!
you got the right stuff alright. JM800QLU-2G the same as mine and it would seem you got the same batch as me too.
One last update
I've tweaked all I could with this ram by now
It runs 5-6-3-13 @ 1066mhz 1.98v
Won't work with tRCR @ 5 above 975 no matter what I try.
thanks for all the help :)
This RAM (w Powerchip IC's) how much can be OC-ed with CL4?
Regards!
Best is up to 460 CL4
Khalmyr have you tried loosening the subtimings?
My OCZ was only stable up to 888 Mhz on default subs, but when I loosen them to highest (63-15-15-15) it goes awesome XD.
I notice absolutely no reduction in speed or bandwidth either, sandra is measuring 8.10 Gb/s at my sig settings.
I keep forgetting to test mine any higher higher, but they should scale nicely with 2 higher Tras.
Subtimings need to be loosened on 2x2 Gb kits, but it makes visually no reduction to speed at all.
This ram looks awesome for the price, like the Hynix 1 Gb modules! But I prefer my OCZ heatspreaders and fan mounted above them :p
This week, 2x2 Gb PC6400 ballistix red and the PC8500 version of my ram are on offer at OCUK for £76 and £105. If I was rich I would also buy the ballistix to play with.
Yeah, I tried everything.
In the end I can rup up to 1080 5-6-3-13 with low sub-timmings which is pretty good.
it just doesn't like tRCD at 5 for some weird reason...
oh well, i stopped caring anyway =P
Hi, could you please post the code of the memory chips themself the two lines under Transcend, you picture is too blury.Quote:
Originally Posted by Khalmyr
like on Tedys picture they say
TQ234PCF8
F0741
noticed your serial number on the sticker starts with 1xxxxxx while the rest posted pictures with 5xxxxxxx, its probably that your chips are older, the line i wrote above F0741 means they are made in 41 week of 2007, the rest of the users posted pictures with 0751 and 0804
If you post your codes, it wont help you but it will help some of us to stay away if they really are older batches os chips.
did you also try the sticks by them self, it could be that one is holding you down.
for the rest: what can these sticks do at 800mhz, can they do 4-4-4-12 at any reasonable voltage at that speed?
Thats a decent enough overclock for 2x2 Gb.Quote:
Originally Posted by Khalmyr
I wonder if we will ever a 2x2 Gb kit capable of 1000 @ 4-4-4-12 and 1200 Mhz @ 5-5-5-15 :p
But with DDR3 prices coming down now, theres not going to be much point.
Quote:
Originally Posted by Millyons
TQ243PCF8
T0747
not very different
ya you are right, did you try the sticks one by one to see if one of them is not as goodQuote:
Originally Posted by Khalmyr
Hi guys.
I found on a local store 2x2Gb Jetram DDR800 JM4GDDR2-8K with an E,
these are Elpida right? Are these good OCers?
TQ243ECF8
F0752
Cya.
Anybody???
Usually they are not good OCers. Try to find Powerchips 'P'
http://www.xtremesystems.org/forums/...0&postcount=12Quote:
Originally Posted by zArt
Hi.
I found some 'P' 2x2Gb kits in another store but i'm considering the Black Dragon cl5 kit as they are only 6 more than the Jetram ones. Read some where that they're Powerchips also.
Thanx guys. Cya.
The 4GB Black Dragon Kits are most likely Elpida from what I've seen. ;) So the Powerchips based Transcend Sticks would be a better bet. You still have to keep in mind, though, that not all Powerchips will clock well. The newer ones seem to do a fair bit worse than the older chips.
Found it,
http://www.geilusa.com/forum/index.p...GB24GB6400C5DC
"The newer ones seem to do a fair bit worse than the older chips."
The ones i saw today on the Jetram's had F0811 on them.
Cya.
Got my 2x2GB Jetram (Powerchip), production date from CPU-Z is 3008. They can do 965MHz 5-5-5-15 at 1.85V.
It's strange they can't boot at any higher FSB. Tried 1000MHz with losened timings, didn't work. Increasing the voltage resulting the same. What to do for higher 1050MHz < FSB. I read some suggestions as setting 5-6-3-13, but no go.
Regards!
Loose tRFC is the key. Try to use the same timings as I: http://www.xtremesystems.org/forums/...9&postcount=33
Thanks for reply. Setting everything as you, but no go. :shrug: At 1000MHz< I got BIOS corruption :shakes:, and have to use the BIOS recovery flash form the original P5K driver CD. :eek:Quote:
Originally Posted by Dr.Leary
Has anybody purchased these recently? Do they still OC well?
Mine were the powerchip variety and didn't clock as well as the original poster.Quote:
Originally Posted by Limo Wreck
However, memtest stable 5-5-5-12 450fsb 1.8v!
But for the money I would get these that definitely are cheap and clock well:
http://c1.neweggimages.com/NeweggIma...231-209-03.jpg
http://www.newegg.com/Product/Produc...82E16820231209
Same situation as mine, don't boot over 375Mhz CL4 and over 475Mhz CL5...Quote:
Originally Posted by LagunaX
But cost less than many 2x1Gb kits so it's still good purchase...