G.Skill F2 6400CL5D 2GBNQ - testing

[stealthbomber]

For 500MH FSB (1000 DDR) 4-4-4-12 is a bit too aggressive for these modules.

I can easily do 4-4-4-12 running at 400MHz FSB @1T but that needs a slight bump in the NB voltage.

There is minimum real world difference anyway between CL4 and CL5, it's the higher C2D clocks that make the most difference.

Just run it at CL 5-5-5- 15/16/17/18 at 2.1-2.2v max, better to max out the FSB clocks than just low latency timings.

[rpsgc]

For 500MH FSB (1000 DDR) 4-4-4-12 is a bit too aggressive for these modules.

I can easily do 4-4-4-12 running at 400MHz FSB @1T but that needs a slight bump in the NB voltage.

There is minimum real world difference anyway between CL4 and CL5, it's the higher C2D clocks that make the most difference.

Just run it at CL 5-5-5- 15/16/17/18 at 2.1-2.2v max, better to max out the FSB clocks than just low latency timings.

Was that directed to me?

I have mine at 400MHz and I have no intention of overclocking them. I just wanted to run them at CL4 stock speed. But if there's no real world difference between CL5 and 4 I'll just leave them at CL5.

At what voltage is your NB? Mine (P5B Deluxe) is at 1,45V, a little high perhaps?

[Xtreme Addict]

I think he has some i680 platform

I had 7 sets of NQ and only one did't work fully stable at 500 MHz...

Two the best sets:

1) 500 Mhz 4-4-4-13 2,4v (P5B Deluxe)
2) 533 MHz 5-4-4-13 2,25v (P5N32E)

[stealthbomber]

I think he has some i680 platform

I had 7 sets of NQ and only one did't work fully stable at 500 MHz...

Two the best sets:

1) 500 Mhz 4-4-4-13 2,4v (P5B Deluxe)
2) 533 MHz 5-4-4-13 2,25v (P5N32E)

Close, it's a 650i SLI board as shown on the page 2 screen dump, currently 1.39v NB, 60mm fan on NB, 80mm fan cooling the memory modules.

Your 7 sets of NQ dimms confirms what I originally thought, 500MHz FSB was easy for me.

I couldn't quite get 533MHz stable in Prime95 it (asking a bit too much for budget modules I guess! ) fails after a few mins even at >2.34v~, ain't tried higher volts yet, or 6-6-6-18 either.

[Xtreme Addict]

My best results on NQ

[stealthbomber]

You got some pretty good samples there!

The pair I have can't quite reach 533MHz at any voltage/timings.

This is what I'm running on right now:

5-4-4-15 compared with 5-5-5-15 gave the rig a nice boost of between 300MB-400MB increase on the buffered int/float scores.

[GSKILL TECH]

you guys are killing our value ram LOL

[Xtreme Addict]

These 3 scores are on 3 different sets I had one set that did almost 580 MHz... but I haven't got screen

[geforcerocker]

These settings are bootstable at 2,35V i will do some benches and CL4 test later




EDIT: Tested with Orthos Blend: stable!

...I have tested 500 CL4-4-4, Orthos Blend: error after ~5min

[stealthbomber]

Try 5-4-4 instead, I've found going from CL5 to CL4 made very little difference to the bandwidth at same frequency, the 'RAS# to CAS#' setting gives the highest bandwidth boost, certainly that's the case for nVidia 680i/650i boards.

[geforcerocker]

I will test it later, do you think these Sticks got Micron chips?

[stealthbomber]

Micron D9 chips?

I hope not because the failure rate for D9 Micron based modules running at =/>2.2v is pretty high (with or without active cooling) going be the reports from various threads all over the net...

I don't think they are Micron chips, higher clocks are one thing, reliability another.

I'd recommend you tie a 80mm fan directly on top of memory modules just to be on the safe side, especially if the system is running 24/7 in the summer heat.

[zert]

I will test it later, do you think these Sticks got Micron chips?

I've read all kinds off things about the IC's on these modules. anything from Promos, Elpida to Powerchip and SEC(Samsung). the very first NQ's had some chance on D9, but I'm convinced you wont find those anymore.

Somebody told me these sticks certainly don't clock like ProMOS and to me its highly unlikely for Samsung chips to reach 500mhz.
so Elpida and PSC are my best bets on the IC's

just to be sure, would it be nice if somebody here takes off the heatspreader and confirms this

[geforcerocker]

I dont think that they are Powerchip(PSC) ICs on these Sticks,
I got a 2GB kit of OCZ Special Ops Edition with PSC, they dont even
run 400 CL4 or 500 CL5...

Topic:
The G.Skill dont run 500Mhz 5-4-4 stable too,
but 556Mhz 5-5-5 is rockstable

[rpsgc]

Sorry for the dumb question but is it safe to have these memories at 2,25V?

[geforcerocker]

probably not, but normally I run my system @ stock clockrates.

This settings are only for testing, my RAM runs usually 800 CL5
with all 4 sticks (2*1024MB OCZ and 2*1024MB G.Skill)

[zert]

its not a dumb question and yes you will most likely be ok.
I would put a 120mm fan over them, just in case

[rpsgc]

its not a dumb question and yes till will most likely be ok.
just put a 120mm fan over them, just in case

Thanks! That's the only way I can get them stable at CL4 but it's probably not worth the trouble.

[geforcerocker]

I have heared, that its not so good to run over 2,20V
all the time if the ICs are Elpida, but i dont think that they are Elpida,
at least at my sticks, they should not scale with voltage like mine do.

[zert]

samsung doenst react at all on voltage. PSC is at its best on +-2.1V
and Elpida scales on voltage if IIRC. so my guess is still Elpida

geforcerocker if your up for it, remove the spreader and give us the answer. that is if your willing to lose your warranty and have a shot at killing your ram. I know I wont remove the spreaders on my sticks
someone here should have the balls to do it

EDIT: seems like i didnt do my homework
Elpida seems to really hate volts, low tRAS and custom timings. but you seem convinced it aint Elpida, what is it according to you?

[geforcerocker]

I think it should not be Powerchips because my OCZ have them
and they do not clock that good or do that thight timings. Should not be
Elpida because they should not scale with voltage that good, my G.Skill
scale perfect till 550Mhz at 2,3V but not more even at 2,50V

http://ramlist.ath.cx/ says this:

PC2-6400 NQ

F2-6400PHU2-1GBNQ
F2-6400PHU2-2GBNQ
5.0-5-5-15

Elpida 6-layer PCB
Samsung 6-layer PCB
Micron D9GMH (B6-3) 6-layer PCB (very rare!)

But I dont think Samsung too, or should they do DDR2 1000+ so easy

It says nothing about Promos, but at the german hardwareluxx.de
Forum some People talked about Promos but they also talked
about handpicked Elpida.

I still hope they are D9GMH

I will not remove my HS, maybe next jear or so...

[Cracker]

Last night I ordered a pair of these GSkill 2GBNQ's from Newegg for $81 delivered to the door.

Hoping they will work and overclock fine with my Corsair XMS DDR-800 (2x512mb sticks), 3 gigs would be sweet but 2 gigs will still be an improvement... I suppose we'll find out.

Not going to Vista just yet but playing STALKER made me realize I need more RAM... might reload BF2 and give it another shot now too.

[Cracker]

Newegg is now selling the 2GBNQ's at $124.99 AND charging $4.99 for the shipping. Price jumped $48.99 in less than 2 weeks. I wonder why the sudden spike? Maybe somebody discovered they were putting D9's in them again?

This is one of the few times in my life I ever bought RAM at it's lowest price point.

P.S. Works fine with my old Corsair sticks too. 3 gigs of RAM makes STALKER and a whole lot of other games much more enjoyable.

[geforcerocker]

Jeah, I use Windows Vista (x64) and I would not have less than my 4 gigs now,
it was a big jump from 2. Vista uses 1,02GB now in idle/desktop,
just some chat programmes in background...


greetings

[stickygreen]

i just got a pair of NQs last week for 81 bucks and paired it with a cheap MSI board i payed under 70 bucks for
i'm totally happy with this ram and cheap mobo .. who'd a thought

running at 2.1V and hitting over 10000
i had actually ran orthos all night but forgot to grab a screen before i turned it off, so i ran it for a quick 1/2 hour .. can run longer if requested