The 500MHz+ CAS 3 Club

Well, 600MHz is fun and all, but we're seeing it a little too often these days, especially with CAS 5 and all being possible.

Thought I'd start a slightly more exclusive club here where the faint-hearted need not apply and voltages north of 3V are almost a given. :p:

I'm fully aware that Memset can be weird and all, so the best we can do is just go off the honor system...if you're using i965, please only post CAS 3 BIOS set. Bad Axe 1 4:5 is also not allowed. I'll be pruning the results personally for legitimate ones.


I don't see very many of these, and given the high volts usually needed, suicides are cool with me, but 1M or Everest latency would be a nice plus.

But please list vdimm and motherboard used, thanks.

Disclaimer: These results are by experienced overclockers, blah blah, if don't want to risk your being RAM fried, don't attempt any of this.

Well...let the games begin. :cool:


Florent.........552.1MHz........3.30V.........i965
Yoxxy...........546.0MHz........3.21V.........680i
dj883u2.........537.6MHz........3.25V.........i965
over@locker886..531.0MHz........3.20V.........i965
Micutzu.........520.8MHz........3.21V.........i965
Miravo..........515.4MHz........3.20V.........680i
Mob1us..........508.5MHz........2.70V..........P35
ozzimark........506.0MHz........2.91V..........AM2
bachus..........505.8MHz........2.90V..........AM2
memory..........502.7MHz........3.28V.........i965
caesarean.......502.5MHz........2.75V..........P35
natedog420......501.6MHz........2.75V..........P35
clon22..........501.2MHz........2.70V..........P35
luihed..........501.1MHz........2.70V.........i965
momomo6789......501.1MHz........2.83V.........i965
BenchZOwner.....501.0MHz........3.49V.........i975
oanvoanc........500.9MHz........3.03V.........i965
Gautam..........500.7MHz........2.89V.........i965
danny_discus....500.7MHz........3.00V.........i965
Elmor...........500.3MHz........2.76V.........i975
ZoLKoRn.........500.0MHz........3.00V.........i965
Kabauterman.....500.0MHz........2.90V.........680i

I had some mobo with P965 and there is problem with setting CAS3 via memset - it isn't either CAS4 nor CAS3. It's a bit more efficient then CAS4, but not so good as CAS4. In addition, many motherboards have issue with setting it even in bios (DS4 and biostar tforce P965PT). But on nf 680i changing CAS by memset COMPLETELY doesn't work. It is still the setting from bios. If you don't trust me, I can show you some pictures with CAS1@ 650 MHz ;) But there are others problems. For istance, using clockgen in "unlinked" mode on nf680i occurs that ram is still at the same frequency as was set in bios, e.g. we boot memory at 1200, go up by clockgen up to 1230 and everything shows us that ram is clocking at 1230, but bandwith is THE SAME as was at 600 MHz. So hence I know that it doesn't work.

So to be fair, settings CL3 must be from bios and I think it should be "3-3-3-X' :cool: And minimum SuperPI 1M. Cause my Team Group did 1M at 510 MHz (CL3) and suicide screen at 542,5 MHz (still dual 2x1 GB) :banana: Superpi is MUCH harder to do... And some categories. Should be 2x1 GB/2x512MB/1x1 GB/1x1 512MB...

To verify entries, I think the best solution will be showing a photo while computer boots at cl3 and high MHz (500 MHz + ) :cool:

i think the only solution is to ban P965, or to give it its own category
on many P965 boards C3 is just way too easy
I've been testing some and in many cases C3 was slower than C4!

you are completly right :)

http://lurboy.se/pics/results/pi1m_d..._333_2.76v.JPG

2.76v only with P5WDH :D

Should have gotten validation on that, hehe.

1000 CL3-3-3-9 2,9 V 1M Stable
on EVGA 680i SLI VDimm Modded

http://img263.imageshack.us/img263/9...00c3qt0.th.jpg

I think the Board is limiting in this case, but I cant run 1:1 divider because the Chipset goes only to 480 FSB

http://www.techworks.pl/xtreme/4M2.JPG

http://www.techworks.pl/xtreme/515full.JPG

@ Elmor

Beautiful result for a such low vdimm :banana:

@ Kabauterman

Nice set of G.skill :) My HZ 8500 doesn't clock so well... But Team Group PC9600 is another story :D

Let's pull something from the closet :D

520Mhz 3-3-3-8 @ 3.21V, SPi 1M (very bad time, just testing RAM):

http://www.crazypc.ro/forum/attachme...7&d=1159520778

Validation.

It's been done on 965 but set trough BIOS.

Don't have the sticks any more though :( Nice pair of G.skill 8500HZ.

Fortunately I have 2 kits TG 9600 on the way :)

I added some of my results :)

I think ~ 520 Superpi 1M is mangable, but unfortunately, my sticks are dying :(

Quote:

---

Originally Posted by Miravo

I added some of my results :)

I think ~ 520 Superpi 1M is mangable, but unfortunately, my sticks are dying :(

---

That's what you get for using 3.0v+ :stick:

Personally wouldn't go over 2.8v as I like to keep my ram for 3d-benches and such :fact:

Krompirusa, a guy from our forums, did 530+ @ 3.2V (non fatbody IC, lol):
http://www.oc-lab2.com/forum/viewtopic.php?f=5&t=1188

Cellshock C5 1000:
http://shrani.si/files/535c3y1vb.png

Quote:

---

Originally Posted by elmor

That's what you get for using 3.0v+ :stick:

Personally wouldn't go over 2.8v as I like to keep my ram for 3d-benches and such :fact:

---

I keep them with such high volts for almost month :p: They have problems with booting and low voltages... but still clocks like hell :cool:

Nice Thread Gautam :D

D9DQW fatbody stick on badaxe2
2,6V DIMM
http://xs114.xs.to/xs114/07150/500cl3333.gif.xs.jpg

Very high voltages here.. I would never dare to go that high..
What is the highest I should go for my chips to survive, and can be used for 24/7 afterwards?

I get my OCZ 9200 FlexXLC in matter of days, how far can I reach with them?

I think max 'safe' *caugh, caugh* is ~ 2,65 to 2,85v. This is quiet pleasant range :) When I am made to do some reviews and memory must be alive ;) then I am trying not to fry the memory and don't give more than ~2,75v :)

Miravo, I'm having those exact same problems lol. When my computer is off for a short period of time (No power to the PSU), my computer refuses to boot because the lack of Vdimm. I have to attach SMD grabbers to get an extra vdimm boost, usually takes 2.65v just to post. Then it works fine after that lol.

http://www.benchzone.com/forum/files...bfc5fdeb38.jpg

GeIL PC2-9600 Engineering Samples ( 2GB Kit ) doing their last memtest run... ( they died on me during that test due to excessive voltage feed [ long story :D ] ) { supplied them with 3.49V accidentally }
Asus P5W DH Deluxe
SuperPi 2M Benchable there with 2.91V

Edit: D9GMH ICs :)

Quote:

---

Originally Posted by EZClock

Miravo, I'm having those exact same problems lol. When my computer is off for a short period of time (No power to the PSU), my computer refuses to boot because the lack of Vdimm. I have to attach SMD grabbers to get an extra vdimm boost, usually takes 2.65v just to post. Then it works fine after that lol.

---

It sounds strangely familiar :rolleyes: I have "wall" at 2,4v. Mems wants 2,4v to boot :cool: Then, I can lower volts to even 2,3v... but nothing less :( I can't RMA them yet, because they do 600 MHz 5-5-5-15 2,35 ~ 2,45v stock... But they overclock worse and worse. Firstly, I was able to do SPI 4-4-4-4 2,45v 600 MHz on P5B Deluxe :slobber:. Now I can't even boot at this frequency :stick: Then, after playing 3,2v one stick started to have problems with booting on relax timings... then another... After about 10 sessions with voltage 2,75 ~ 3,3v sticks became completely unbootable with default bios values. (I have to boot computer with some other ram, set very strict alphas, set high voltage (2,4 and above) and then I am able to work completely stable at voltage ~ 2,4 and above. But overall OC lowered enormously :slapass:

My teams mostly love setting 500 MHz 3-3-3-8 @ 2,9 :rolleyes: They boot everytime at this value :toast:

E6300@3.5GHz (500*7),1.600V
Scythe Andy Samurai+5000rpm fan
ASUS Commando, 0601bios
Kingston KHX9600D2K2/1G@500MHz CL3-3-3-8,3.0V
ASUS EN8800GTX
SilverStone OP650
http://valid.x86-secret.com/show_oc?id=180715

SuperPi 2M
http://www.overclockzone.com/zolkorn...00CL3338-3.png
SuperPi 4M
http://www.overclockzone.com/zolkorn...00CL3338-4.png

ps. original post >>> here

Quote:

---

Originally Posted by Miravo

It sounds strangely familiar :rolleyes: I have "wall" at 2,4v. Mems wants 2,4v to boot :cool: Then, I can lower volts to even 2,3v... but nothing less :( I can't RMA them yet, because they do 600 MHz 5-5-5-15 2,35 ~ 2,45v stock... But they overclock worse and worse. Firstly, I was able to do SPI 4-4-4-4 2,45v 600 MHz on P5B Deluxe :slobber:. Now I can't even boot at this frequency :stick: Then, after playing 3,2v one stick started to have problems with booting on relax timings... then another... After about 10 sessions with voltage 2,75 ~ 3,3v sticks became completely unbootable with default bios values. (I have to boot computer with some other ram, set very strict alphas, set high voltage (2,4 and above) and then I am able to work completely stable at voltage ~ 2,4 and above. But overall OC lowered enormously :slapass:

My teams mostly love setting 500 MHz 3-3-3-8 @ 2,9 :rolleyes: They boot everytime at this value :toast:

---

I had simular problems with my D9GMH.
After giving them 3.15v they wouldn't boot at a vmem between 1.95 and 2.3v.

After some testing, mems aren't stable at 600 2,4 ~2,45v... And have problems with booting. Is this enough reason for RMA'ing them? And will be any problem with varranty? :confused:

@SMa

And mems are still alive?

This is my result with ram 2x1Gb Cellshock 1000@1074mhz a cas 3-3-3-8.

http://img107.imageshack.us/img107/6...4193km1.th.jpg

By;)