INFO: Kingmax PC2700 overclocking...

[THUGSROOK]

I ran some tests on my P4 333DDR system to see how far Kingmax PC2700 memory can overclock.
memory was set by SPD and in 3:5 mode. (133/266DDR scores are in 3:4 mode)
no extra voltage was applied.

SYSTEM SPECS:
P4 Northwood 1.8A @ 1.8ghz-2.07ghz, Asus P4S333 SiS645, Kingmax 2x 256mb PC2700DDR,
GeForce3 TI500, 21.85 drivers, SB Live 5.1, Maxtor D740X 40gb ATA133 7200rpm, Enermax 430w

Sandra2002 Memory
1800mhz/100fsb - 133mhz/266DDR bus: 1998 / 1969
1800mhz/100fsb - 166mhz/333DDR bus: 2277 / 2247
2052mhz/114fsb - 189mhz/378DDR bus: 2587 / 2552
2070mhz/115fsb - 191mhz/382DDR bus: ***failed***

 

[bunnyfubbles]

Thanks for the info! I'd think the 5ns ram of Kingmax (as I've seen many claims that Kingmax PC2700 has 5ns ram) should be able to hit 200MHz (as all 5ns ram should), the results don't support it. Maybe those results are with agressive CAS timings? Have 2 DIMMs could also cause instability at higher speeds... 189MHz is still very fast.

I'd like to see how Mushkin's larger PC2700 512MB DIMM performs and what its overclocking potential is.

 

[THUGSROOK]

bunnyfubbles
the chip markings say -07a, so i have no idea what ns the chips are. (7ns? no way)
im thinking the 3:5 multiplier may be causing some instability. perhaps a test in 3:4 mode is in order.
cas settings were set by SPD.
the "2 Dimm" factor is always a possibility. ill have to check into that.
189mhz aint bad, im gonna add voltage to see if it can do any better.

 

[Def]

If that's without a voltage increase, that's crazy!!! Sounds like early production 5ns chips, yields are probably not all that high, so if it gets "close" it gets sold.

All this talk about fast RAM has me all hot and bothered...





For an upgrade that is...

Defster

 

[exp]

Very interesting, thanks. 189MHz at stock voltage sounds good to me. I can't wait to hear how they fare with some extra juice.

 

[TimidOCer]

<< bunnyfubbles
the chip markings say -07a, so i have no idea what ns the chips are. (7ns? no way)
im thinking the 3:5 multiplier may be causing some instability. perhaps a test in 3:4 mode is in order.
cas settings were set by SPD.
the "2 Dimm" factor is always a possibility. ill have to check into that.
189mhz aint bad, im gonna add voltage to see if it can do any better.

>>



Those are 7ns chips..

-5 means 5ns

Very impressive for 7ns ones

 

[Strawberrymom]

you got bad fake kingmax ddr ram

my ddr pc2700 all has 5ns on it

 

[THUGSROOK]

Strawberrymom
how far can the 5ns ones overclock?

 

[WA261]

my Kingmax pc2700 is 5ns also ...i dont know how high it can run though, as my registry craps out at 166....


how do you guys run such high fsb speeds?

 

[Strawberrymom]

so far 350ddr which is 175x2 but my board is a 845 so my fsb is really 133

 

[THUGSROOK]

so my memory is actually only 143mhz? ...but it can run 189mhz?

weird, ill have to look into this.

WA261 - we run P4 Northwoods

 

[bunnyfubbles]

Doesnt matter if it isn't P4... many guys with the Iwill XP333 boards have fsb clocks up into the 190MHz range, but many of them use OCZ PC3000 ram, which I am not ready to jump right into just yet. I was thinking that if Kingmax truly uses 5ns ram, then 200MHz + shouldn't be an unreasonable overclock...whereas the OCZ ram is just hand picked PC2100 to overclock to PC3000. That means using more than one DIMM could very well result with instability or the mobo forcing the clock speeds back down to PC2100. Even OCZ suggests that only one DIMM be used when overclocking. Sure, the speed is ideal, but the expandability is none unless whole new sticks of ram are bought and the old is thrown out.

I would really like to find out how high Kingmax PC2700 can overclock, especially the 5ns ones (if they real and I believe they are). It really sucks because I can't find any decent reviews of newer ram modules. And the ones that I do find don't really go into what the max overclocking potential is...

 

[tapir]

i have the -07a chips and they absolutely suck. can't even get to 140MHz stably. and no, it's not a thermal issue.

 

[bunnyfubbles]

I've noticed from Kommax.com from the three flavors of Kingmax ram they offer...

PC2700 is advertised (and even guaranteed) with 5ns ram which should easily reach 166MHz, and should get up to 200MHz

PC2400 is advertised with 6ns ram, which should meet the PC2400/DDR300 specifaction with out trouble as well, 6ns ram should even take it to 166MHz or PC2700...

PC2100 is advertised with 7ns ram, which is actually rather good for PC2100 as most modules use 7.5ns ram which equates to 133MHz.

For those that have ordered Kingmax thinking they were getting the PC2700 model may have been shafted with their PC2100 model. tapir has reported that he cannot get a stable overclock higher than 140MHz with his "Kingmax PC2700". Well Kingmax's PC2100 with 7ns ram should be able to reach speeds of 142-143MHz...

THUGSROOK may also have a pair of Kingmax with 7ns ram, but he may have just had a lucky overclock. Then maybe tapir may just have a stick of ram that wasn't so lucky and is actually an oddball for not being able to clock as high.

Anyways, I intend to grab myself some Kingmax PC2700 with 5ns ram and a I-Will XP333. I'll shoot for a 200MHz fsb of which the XP333's 1/6 divider should work great with to keep the rest of the system stable...I'll have to unlock the Athlon XP to lower the multiplier in order to get it to run stable. Getting an Athlon XP 1800+ to run stable @ 2.3GHz is most likely impossible with just a HS/fan for cooling. Maybe the T-bred Athlons might be able to do it But I won't hold my breath until we can find out...

 

[THUGSROOK]

i will be calling newegg to complain.

7ns chips does not = PC2700 PERIOD!

 

[tapir]

THUGSROOK, keep us updated if you get anything out of them. I'd really like to see some real DDR333 in my rig, but basically what i got from them was "It says DDR333 on the label. Suck it up."

 

[THUGSROOK]

ill tell them it wont run @ 333.
or better yet, it dont run at all

concidering i buy $2k-$4k worth of parts a month from them it would be stupid for them to blow me off.
this will prolly end my 4 year relationship with kingmax too. (if i dont get my 5ns chips)

 

[bunnyfubbles]

I wouldn't blow off Kingmax because a distributer cheated you. Someone mentioned this earlier, but you can go to kommax.com and order Kingmax PC2700 with 5ns ram, and they guarantee that it has 5ns ram...

 

[DAPUNISHER]

<< 7ns chips does not = PC2700 PERIOD >>

Actually 7.5ns@cas2.5= True 2700DDR for Model#: MPMB62D-68KX3 which is what Newegg sells, go to page 12 of the PDF data sheet and you'll see it says 7.5ns@cas2.5 and 10ns@cas2 respectively. Kingmax has no data sheet available yet for the 5ns version Kommax is selling I guess their as slow updating datasheets as some of the other manufacturers :disgust: I bought the Samsung 2700DDR because I didn't know about the Kommax deal and was still pleasantly surprised to discover that M368L3223CTL-C(L)B3 167MHz(6.0ns@CL=2.5) I bought at Newegg appears to be good stuff. Ofcourse the jury is out on that one until I've put it to task early next week

 

[THUGSROOK]

hehe, well ok i was on a rant

still, i thought i was getting 5ns chips and didnt.

i blame newegg for not labeling them for what they were.
i also blame kingmax for having the worst website ever!
in the end its my fault.

needless to say, i will be getting new ram to test out eventually.
havta admit tho, 189mhz from a 7ns cas2.5 chip is pretty damn good :Q
also my system is 100% stable @ 333DDR, so i have nothing to complain about there.

thx for all your input everyone

 

[THUGSROOK]

i just ordered a pair of 5ns suckers from kommax.com.

coming soon...
INFO: Kingmax pc2700 7ns Vs. 5ns overclocking!

 

[Odin30]

You know i think i read somethin about this at overclockers.com forums. Some guy was saying the same thing(that he got 7ns instead of 5) but when kingmax was contacted they stated that some of their ram was "mismarked" and was actually all 5ns as advertised.
And if i remember right after testing kingmax was correct.
You may want to do a search over there in the memory section. I hope it was at overclockers where i read that. If not sorry man.

 

[THUGSROOK]

Odin30
na its no biggie - ill find out for myself if they are different or not.
ill also be able to do some 3 stick testing too, to find out what the limitations are there

the 2 sticks i already have are very wierd looking for kingmax sticks - they are full size pcbs, not low profile.
ill report my findings asap.
ill also have 2 sticks for sale... (if they are indeed mismarked)

 

[Insane3D]

Dammit..I just ordered some from Newegg... I guess I'll be returning it. I knew I should have ordered from Kommax...

 

[THUGSROOK]

Insane3D
dont get all worried yet. i should have my 5ns suckers in a few days. ill LYK if there is actually a real difference or not.