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I've just taken the plunge on a 4Gb pair of these and was hoping someone else may know what they're likely to perform like.
I'm hoping for 1200+ but I am doubtful I'll get that far, which will probably mean selling them for a pair of G.Skill tridents instead (which are rated for 1200+)
It would be good to hear anyone else's experiences.
test them and tell us :)!
Trust me, I will! :D
Links please
I didn't even know they came out with DOM GT ddr2
I think they will perform as the G.Skill Trident 1200kit or the Ripjaws 1200 or the OCZ LV Blade 1066, they will topp out at max 1300, if you get very good sticks, they will do 1350, but not more. but as he said:D:D:D:D
test them and tell us ! :up::up::up::up:
That's where it becomes strange, I would provide a link, but there's nothing on their site about them. The place with the 'barcode-type name' sells them, but they're a tad pricey. If you think they'll be on a par with the Blades/Tridents, I can't wait to get my mitts on 'em!
I will tell all when they arrive - not coming tomorrow due to f**ing postal strike though :/
interesting to see what they can do
http://www.play.com/PC/PCs/4-/117403...t/Product.html
Since its rated at 2.1V, I doubt its using same chipset as those Blade LVQuote:
* Density: 4GB (2x2GB Module)
* Speed: 1066MHz
* Timing: 5-5-5-15
* Type: DDR2
* Format: DIMM
* Included Accessories: Corsair Airflow Fan
* Pin Out: 240 Pin
* Voltage: 2.1V
* Features:
* Two matched 2GB modules for use in high performance Intel and AMD systems
* Outrageously fast 1066MHz performance
* Ultra-low 5-5-5-15 latency
* NVIDIA Enhanced Performance Profiles (EPP) Support
* Dominator GT with rosso corsa accents
But then again, there is no proof that the site has the correct info at the time
The only info I managed to get was from new'ovum'. There's 3 reviews on there, and it seems like it could be top-binned RAM, but I guess I can only speculate. Others are saying it's got the wrong markings on it i.e. DDR3 and 1.65v! There's no reply on the corsair forum (except one chap who's got them at 1066, 5-4-4-12 on 1.8v) which sounds promising. The only thing I find rather iffy is Corsair's lack of acknowledgement with these modules, but I guess the proof will be in the pudding! Hopefully not long to wait now....
They arrived yesterday, and they were very well packaged. The only weird thing was it states 1.65v on the modules (ala DDR3), and there's no paperwork whatsoever. There's also nothing on their site, so I'm somewhat disappointed with the lack of info. I've read in a few places about the mislabelling of these too.
Still lots more testing to be done yet so I'm not going to slate these stick just yet, and getting my new CPU clocked is my priority, but tbh unless the bios is buggy, or there's a crucial timing I'm missing, or the ram skews need a bit of work, these really arent that impressive. They're not stable at 1120 on my MIIF with the current bios (2202), but they only need 1.8v for 1066. Running stock speeds with stock volts (2.1v) seemed to make them a lot more unstable and run uncomfortably hot at 42°C too :confused:
I will undoubtedly post some more info over this weekend, hopefully I won't need an RMA but I'm not holding a huge amount of hope :/
can you post any pics of them?
Please post a picture of the sticks, I'm interested in what info is printed on them.
Also, if they are really using Elpida chips, stay away from voltages > 1,8V. Try to raise your NB voltage to stabilize them. For now DDR2-1120 area is typical of PSC, let's see what it says on the sticks. I'm not familiar with PSC, isn't 1.8V too low for them to run DDR2-1066?
I'll get pics up the moment my other half gets back from the zoo with my camera :)
They do look real nice and are a good, solid weight and will suit the MIIF nicely if I can get them to overclock well enough. No idea what ICs are in them, but I've put up a post on the corsair forums to see if anyone can help.
The info reads:
CMG4GX2M2A1066C5
XMS2-8500 2048MB 1066MHz 5-5-5-15 1.65v ver7.1
My Dominator GT's ( DDR3 ) P/N starts with CMG too, I'm not sure if the P/N is used for other sticks too.
IC info is somewhat confusing, ver7.1 is PSC on the unified DDR3 memory IC info table, while ver7.1 can mean either PSC, Elpida or Promos on DDR2... I couldn't find any specific info on this kit. :(
http://i194.photobucket.com/albums/z...e/DSCF0664.jpg
Apologies for the size, is it possible to shrink the view?
I'm going to stick my neck out and say its promos. :(
Hmm weird.
nope not promosQuote:
Originally Posted by Ket
promos are powerhungry
i wont stick my neck out but i say they are elpida
1.65v;)
Well, after a bit more testing, it seems like they don't respond too well to anything over 2.0v, they just churn out more memtest5 errors.
This is without the cooler attached so I may have to make some room for that and test some more.
So far they can reach somewhere between 1125 & 1150, at 5-5-5-15 on 1.86v but more testing is needed, and after reading the above comments, it looks like I could need even less voltage..
I was advised to use 2.1v on the corsair forums, but unless they respond amazingly well to the cooler, I can't imagine they would need that much.
I'm a tad perplexed as to why they can't offer any decent info on these sticks, but if it is as you say zsamz and they are supposed to be rated as 1.65v, then the minimum I can run them with is 1.8 - is that bad for the long term?
Not really DDR2 standards I guess, but with this information, can you determine the type a bit easier?
I'm with zsamz_ on this, those should be using Elpida, I'm almost 99% sure those are not PSC or ProMos. I need to repeat my advice, don't raise the voltage above 1.8V, these chips don't need that much voltage.
Can you test lower voltages? My Elpida chips did DDR2-1066 CL5 with 1.65V on my UD3P.
Can you post a MemSet screen of what subtimings you are running?
The lowest voltage I can run them with is 1.8v, so I'll step back down and see if it helps things. Thanks for the info guys, it's much appreciated :up:
I'll just restart and pop up a memset pic....
I just reread my last post and I should have said it differently, please try to run DDR2-1066 CL5 with 1.80V, this should help us identify the chips, for overclocking up to 1.90V is okay. :)
you need to start volage around 1.6 some of these elpida just cant stand volts
Finally, some memset timings for you and a bench which I hope to improve on:
http://i194.photobucket.com/albums/z...sMT5stable.jpg
The sticks are 10-pass memtest stable at 1128 and need 1.91v to keep stable at these timings. Any less and I start to get small numbers of fails in test 5. I'm wondering if this would actually be a good point to try & tune the ram clock skews. Would anyone concur?
I hope to increase the fsb some more and hope to get around 1150 stable, are there any timings in the above pic that might benefit from being loosened so I could do this?
Seems strange they have 2.1v in the EPP profile, there's no chance they're stable at those volts without some good cooling imo.
1.6v isn't an option on my board btw, 1.8v is the minimum and it seems to scale ok up to ~1.9v but they start to get a little warm from that point, nothing toasty though :)
Thanks for all your input peeps :up:
p.s. - did you want me to post the timings at stock speed too? If so I'll get them up in 4-5 hours ;)
What you described is typical of Elpida chips, they do rather at low volts, up to 1.9V your gains will get smaller and over that points it will only add heat.
All mb-makers should add options for lower VDIMM to their BIOSes, but I'm afraid that won't happen any more.
The fact that you're running a quad core processor makes it even harder for the NB, you might reach the NB's limit faster than the limit of the memory.
Try to loosen up tRFC, try 75 as a starting point. :)
I say promos based on them apparently needing 2.1v according to what folk say in the corsair forums. Anybodys guess though considering corsair don't even seem to know these sticks exist. Feel sorry for you though In-Fluence, dropping £100 on these sticks :( Even my 4GB OCZ PC9200 LV Plats only cost £70.
Quote:
Originally Posted by In-Fluence
I highlighted some parts for you. ;)Quote:
Originally Posted by Ket
Just because they have 2.1V written in the EPP doesn't mean they actually need it. I'm still convinced this is a mediocre bin of the Elpidas that we saw first in the OCZ Blade series, their characteristics just fit perfectly to what the OP is describing. I've never tested the 1GBit ProMos ICs, but compared to old ICs made by them this just doesn't fit.
Price of course is a ripoff. In this case the premium you pay for the Dominator GT series is in no way justified, while it's fine for the DDR3 GTs in my opinion.
That's exactly how I feel to be honest. I went from ordering 8Gb of blades for £120, then being told after a month that they didn't have any. By that point all decent 4Gb DDRII kits vanished or went for extortionate prices. The final store I went to for a finance deal on only had these or the original dominators, both similarly priced. Considering I could have picked up a pair of 9600 tridents for the same price, I'm quite gutted. I'm considering sending them back on the basis that they've got the wrong voltages advertised on the retailer's website, and no measurements to help determine if it would fit in my case (which with the fan doesn't), and corsairs general lack of support and evasive attitude towards any documentation for them.Quote:
Originally Posted by Don_Dan
My problem is the fact it's on finance and the retailer has no other decent alternatives and I doubt they'd refund me for a debt I haven't finished paying yet! Might be less hassle to just sell them in a popular online auction unless someone here wants to fork out £120 for them :rofl:
Those are Definately Low Voltage ELPIDA chips m8. try running them 5-5-5-18 when I change my lv ocz from 5-5-5-15 to 5-5-5-18 at 1.9v im able to get about 1260mhz worth a shot
From the looks of it.......seems like Elpida based ICs
Much like those found on OCZ LV series
Try changing trrd to 4 or 5
And check whats the lowest voltage required
And I suspect your north bridge and GTL values are not sufficient
Try pumping a bit more
I will give the lowering of trrd a try when I'm on my lunch break, thanks for the tip.
The NB GTL is definitely tuned. It's very sensitive on this board and therefore easy to find. I'm about 6 hours prime blend stable now at 466x8/1120MHz so pretty close to getting a good overclock on the CPU and half decent memory speeds. Would be nice if I could move up to the next divider, but doubtful. It doesn't reallt post beyond 1150 :(
After I'm stable I'll try to nudge up the FSB and find the limits, but both the board and memory will limit me unless I can go for some really tight timings at 1:1 ratio or if trrd works wonders :rolleyes:
These sticks from initial tests certainly do not seem to justify a 'GT' badge. It's as if Corsair is trying to sell these on the reflected glory of the 'real' DDR3 GT's which are phenomenally good. Blades are better, Gskills are better, even the 8800 PI's clock better, my mates set do DDR2-1160.
Sounds like crappy binned Elpida, i agree.
You really need to try them at a ratio not pushing your board so hard.
Use 3:4 for max RAM testing (lower FSB). Loosen tRD for testing.
Try 5-5-5-18 w/ loose tRFC as mentioned, or even see what happens @ 5-6-5-20 (i got a wee bit more @ 5-6-5 than 5-5-5 w/ my LV OCZ Plats).
Tried all that, with TRFc up to 80 and trrd up to 5, I managed to post with a few more MHz, but it needed 2v and still wasn't anywhere near MT stable. I suppose it overclocks but by no more than 100MHz. I think a pair of tridents or PIs seem like the only viable option if I want to get off the 1:1 ratio at high fsb.
I'm even considering getting hold of another pair of 1gb reapers considering how overpriced and scarce good performance 4gb kits are.
Don't go over 1.90V, this will only make things worse. If loosened timings didn't help you, you might be limited by something else. Your NB is really stressed by running a Q9650 at high FSB plus a 4GB kit at high clocks with a tight PL/tRD. If you want to test the memory, follow n7's advice and take some stress off your board. Otherwise you might blame the memory for problems it doesn't cause.Quote:
Originally Posted by In-Fluence
Can you test your max FSB with another memory kit?
I will try a lower fsb, but I've passed with up to 1233MHz with my 1Gb reapers with various ratios. Had far more success with those which is why I was thinking of getting another pair.
I'll back down to 1.8 and see what's acheivable from there with a lower fsb but ~1.9v is definitely needed to get over 1100MHz at current fsb.
I havent really played with the skews yet either which I've heard certain values can relate to different type of ic. Can anyone confirm this and perhaps offer any advice here?
*edit
Well, call me stupid, but I've just taken the plunge on an 4x2GB of apogee GT 1150's. There's not many reviews about on them, but the timings and voltages look good (at least this manufacturer is willing to acknowledge they exist). If they runs at rated specs, I'll be happy enough and get rid of these corsair POS. Not worth the money at all - steer well clear!
Good luck with your new kit! 8GB won't make it easier for the board though! ;)Quote:
Originally Posted by In-Fluence
Thanks for the good luck wishes. Just completed a major rebuild, and upon trying out the chaintech memory, I've got a duff stick. RMA will be hopefully be sorted by the end of the week. 2 of the sticks are stable at 1168 and 1.93v, even though they're rated 2.1 so things are looking up. Board seemed fine with 2x1gb reapers as well - looking good so far although I know 8GB will stretch it :)