Cell-SHOCKS ag. DDR3-2000 7-6-5-18 1T Prime_Pi Stable

[pinto]

My kit is nearly as good as victor's kit

first tests:

1.9v 890 76518 24/24 stable



2.15v 940 796518 fsb limited by my QX6800




2.2v 890 66518



Really happy with this kit, P5K3 is a very good board too!

[saaya]

hey saaya..

whats a safe voltage for DDR3 for 24/7 use?? in overclock mode of course..

1.9v :P

but if you keep it cool i think 2.25v is fine as well.
I think! im not sure... im still testing
Ive run mem at 2.25v with a fan on it for a few weeks now and didnt notice any degradation whatsoever.

Every mem is different, some probabaly get damaged before others, so id recommend you to bump the voltage bit by bit and see if you notice errors or degradation. once you do reduce the voltage and check if the mem is fine at that voltage.

[saaya]

My kit is nearly as good as victor's kit

first tests:

1.9v 890 76518 24/24 stable



2.15v 940 796518 fsb limited by my QX6800




2.2v 890 66518



Really happy with this kit, P5K3 is a very good board too!

Nice! yeah i really like the p5k3 too
no bugs at all, and it was rockstable and everything worked from the first bios release.

[Fr3ak]

I am also testing the 1800 8-7-6-21-kit with black heatspreaders right now and my first impression is: Ram is good, but it's hard to reveal it's full potential, cos of crappy strap settings and limiting mb or CPU.

I still cannot run 900MHz stable, cos I need a very high VMCH to even boot into windows on the Blitz Extreme. 850 MHz runs fine and stable. Will have to find out tomorrow what is holding me back. I tested the board and CPU with up to 525MHz stable, so FSB-wise there shouldn't be a problem. Seems like the MCH is stressed a lot the higher the memory runs, so that might be a limiting factor. Maybe more voltage will help. I will find out

[pinto]

I think that your Blitz is limiting you. Did you try all available bios?

[erwinz]

1.9v :P

but if you keep it cool i think 2.25v is fine as well.
I think! im not sure... im still testing
Ive run mem at 2.25v with a fan on it for a few weeks now and didnt notice any degradation whatsoever.

Every mem is different, some probabaly get damaged before others, so id recommend you to bump the voltage bit by bit and see if you notice errors or degradation. once you do reduce the voltage and check if the mem is fine at that voltage.

thanks..

hehehe I always use fan over my memories.. Cellshocks have very good memories..

[saaya]

I am also testing the 1800 8-7-6-21-kit with black heatspreaders right now and my first impression is: Ram is good, but it's hard to reveal it's full potential, cos of crappy strap settings and limiting mb or CPU.

I still cannot run 900MHz stable, cos I need a very high VMCH to even boot into windows on the Blitz Extreme. 850 MHz runs fine and stable. Will have to find out tomorrow what is holding me back. I tested the board and CPU with up to 525MHz stable, so FSB-wise there shouldn't be a problem. Seems like the MCH is stressed a lot the higher the memory runs, so that might be a limiting factor. Maybe more voltage will help. I will find out

Hey Olli,
well it depends on what you consider a very high mch voltage
Im running the highest option, 1.7v on the p5k3 boards we have here for weeks without any problems. I always have a fan lying half on the mem half on the nb, so all is cooled well.

The relation between chipset voltage and the max ddr3 clockspeed is a bit odd. you might think that once the chipset hit the max speed it can do with a certain chipset voltage thats it, but if you increase vdimm you actually get higher results with the same chipset voltage. Weird eh?
So first i thought damn this mem needs a lot of vdimm to clock high, but actually it needs a lot less vdimm when you bump up the chipset voltage

Here is a graph i made that might be helpfull
EDIT: keep in mind that this graph not only shows what this boards mch can do, but a combination of what the board AND mem can do.
With another set it might have been stable at 1900 with lower vdimm for example.

I think that your Blitz is limiting you. Did you try all available bios?

yupp, but i think its a matter of the settings and not the board being limited to less than 1800 memspeed.
I hope!

In the end thats why asus is asking intel to create x48.
asus cant speed bin the chipsets in trays, and since their blitz boards use a different pcb they can bin the boards once the chipset is soldered on.
so the way the ddr3 mem controllers vary in their max speed asus and others probably have issues with high end ddr3 boards catching a bad nb and only reaching 1800 memspeed.

thanks..

Your welcome
I just hope you wont kill your mem and then blame me hehehe

hehehe I always use fan over my memories.. Cellshocks have very good memories..

Thank you

[saaya]

here are all settings im using fr3ak (and whoever else has problems with his ddr3)

advanced:
fsb 450(+)
dram frequency 1800(+)

cas 8
ras to cas 7
ras precharge 6
ras active 21

cpu voltage 1.55
dram voltage 1.9v
fsb termination voltage 1.5v
northbridge voltage 1.7v

everything else left at auto

please keep in mind that to reach 1800mhz memory speed you need an fsb of 450+ which some quadcores might have problems with, and which overclocks the cpu, so you might have to lower the cpu multiplier.

[jugeen]

now i got my new toys test coming soon....

[jugeen]

first screenshot http://img514.imageshack.us/img514/5...0070904io4.jpg

[eva2000]

I am also testing the 1800 8-7-6-21-kit with black heatspreaders right now and my first impression is: Ram is good, but it's hard to reveal it's full potential, cos of crappy strap settings and limiting mb or CPU.

I still cannot run 900MHz stable, cos I need a very high VMCH to even boot into windows on the Blitz Extreme. 850 MHz runs fine and stable. Will have to find out tomorrow what is holding me back. I tested the board and CPU with up to 525MHz stable, so FSB-wise there shouldn't be a problem. Seems like the MCH is stressed a lot the higher the memory runs, so that might be a limiting factor. Maybe more voltage will help. I will find out

when you loosen ram timings can you get it more stable at lower NB/vmch volts ?

[VictorWang]

oh, good to see Retail Cellshocks almost same performance.
u did good job saaya

[jugeen]

my first experince is a cooler over the kit is strongly recommended. if i test 1.9 vdimm W/o fan, memtest86+ 1.7 the kit make errors.

now i am testing the kit @ 1800 7-8-6-21 1.7 vdimm and seems to be ok after 1 memtest pass. i hope my kit is not defect.

[saaya]

oh, good to see Retail Cellshocks almost same performance.
u did good job saaya

thanks

my first experince is a cooler over the kit is strongly recommended. if i test 1.9 vdimm W/o fan, memtest86+ 1.7 the kit make errors.

now i am testing the kit @ 1800 7-8-6-21 1.7 vdimm and seems to be ok after 1 memtest pass. i hope my kit is not defect.

Yes! please use cooling on the mem!
You mean 7-6-5-18 timings right?
If it errors at 1.9v then it could be that those sticks dont like high vdimm.
Start with low vdimm and see how far you can go, only then bump up vdimm.

[jugeen]

sry, the correct timigs are 8-7-6-20.

thanks



Yes! please use cooling on the mem!
You mean 7-6-5-18 timings right?
If it errors at 1.9v then it could be that those sticks dont like high vdimm.
Start with low vdimm and see how far you can go, only then bump up vdimm.

[indiecom]

oh, good to see Retail Cellshocks almost same performance.
u did good job saaya

Do u try Cellshock with black heatspreader like this :

http://www.memoryc.com/products/desc...kit/index.html


Thanks

[jugeen]

Do u try Cellshock with black heatspreader like this :

http://www.memoryc.com/products/desc...kit/index.html


Thanks

he has blue. we have black.

[indiecom]

he has blue. we have black.

Ss, please.....thanks

[Fr3ak]

I still have trouble to get 32m stable at above 900MHz, but I blame the board for that. It seems like the NB is stressed a lot with the memory running that high. I can run 32m stable with memory at 750MHz and a FSB of 525MHz with 1.4VMCH. To boot at 450MHz with RAM running DDR3 1800 I already need about 1.6V on the MCH to even boot into windows.

I didn't have much time so far, so I tried a couple of different settings with 1M to get a slight idea what is possible and what is not.
I will do more testing with 32m over the weekend, here is what I have so far:

Edit: All tests were done with 2,24 V Vdimm. I know I am a jerk Will try with less voltage tonight. I have a strong feeling it is the board limiting me and not the RAM, so the settings below will most likely run with less Vdimm too.

[hipro5]

Ha, ha, ha.....I like the LAST one with the Cas 5 - 4 - 4 you Freak.....

[v_parrello]

I still have trouble to get 32m stable at above 900MHz, but I blame the board for that. It seems like the NB is stressed a lot with the memory running that high. I can run 32m stable with memory at 750MHz and a FSB of 525MHz with 1.4VMCH. To boot at 450MHz with RAM running DDR3 1800 I already need about 1.6V on the MCH to even boot into windows.

I didn't have much time so far, so I tried a couple of different settings with 1M to get a slight idea what is possible and what is not.
I will do more testing with 32m over the weekend, here is what I have so far:

Edit: All tests were done with 2,24 V Vdimm. I know I am a jerk Will try with less voltage tonight. I have a strong feeling it is the board limiting me and not the RAM, so the settings below will most likely run with less Vdimm too.

Fr3ak,
which motherboard are you using?
If you want to go above 900 you have to give volts to nortbridge, with these DDR3 RAM the memory controller integrated into northbridge is very stressed.

[Fr3ak]

Ha, ha, ha.....I like the LAST one with the Cas 5 - 4 - 4 you Freak.....

hehe 5-4-3 didn't work. 5-4-4 was as low as I could go with 750 MHz.

Maybe better timings work with less clockspeed.

Fr3ak,
which motherboard are you using?
If you want to go above 900 you have to give volts to nortbridge, with these DDR3 RAM the memory controller integrated into northbridge is very stressed.

I am using a Asus Blitz Extreme. I already figured out that more VMCH helps a lot. Unfortunately I am really busy right now and only have a few hours in the evening to bench. But by that time I am quite exhausted and not really in the mood to use a computer any longer, which is why my progress is rather slow. I am planning to bench a lot more at the weekend The memory surely is nice, but the mainboard is giving me a hard time I don't think Asus engineers didn't think of running 900MHz on the memory when they designed the board. Same for Intel and the chipset

[LardArse]

u workaholic!! :P u need to fix your bed first!
But you're doing justice to the good stuff from saaya da man

[v_parrello]

hehe 5-4-3 didn't work. 5-4-4 was as low as I could go with 750 MHz.

Maybe better timings work with less clockspeed.



I am using a Asus Blitz Extreme. I already figured out that more VMCH helps a lot. Unfortunately I am really busy right now and only have a few hours in the evening to bench. But by that time I am quite exhausted and not really in the mood to use a computer any longer, which is why my progress is rather slow. I am planning to bench a lot more at the weekend The memory surely is nice, but the mainboard is giving me a hard time I don't think Asus engineers didn't think of running 900MHz on the memory when they designed the board. Same for Intel and the chipset

Officially (as stated in all offcial DDR3 motherboard specs) all DDR3 P35 motherboards support RAM with DDR3-1333 as maximum frequency (because default FSB speed is 333 MHz and with maximum multiplier FSB:RAM=1:2 there is DDR3-1333 frequency for memory).

But, with overclock, if you want to go above DDR3-1800-1900 with DDR3 RAM you need a CPU with very high FSB wall (500-520 MHz) and you have to try to raise the North Bridge Voltage, PLL voltage, and FSB Termination Voltage (obviously also vcore and vmem).

I am not so sure about the facts that Asus and Intel engineers didn't think of running 900MHz on the memory when they designed the boards, infact there are motherboards that are able to run memory above DDR3-2000 MHz (like P5K3 and Blitz Extreme). Obviously we are talking about benching sessions and not for daily use (but for daily use you could run for sure at DDR3-1600 or with some overvoltage at DDR3-1800).

I agree about the fact that with these memories it could be better to have a chipset with default FSB of 400 MHz and similar processors able to run at 400 MHz as default.

[saaya]

I still have trouble to get 32m stable at above 900MHz, but I blame the board for that. It seems like the NB is stressed a lot with the memory running that high. I can run 32m stable with memory at 750MHz and a FSB of 525MHz with 1.4VMCH. To boot at 450MHz with RAM running DDR3 1800 I already need about 1.6V on the MCH to even boot into windows.

I didn't have much time so far, so I tried a couple of different settings with 1M to get a slight idea what is possible and what is not.
I will do more testing with 32m over the weekend, here is what I have so far:

Edit: All tests were done with 2,24 V Vdimm. I know I am a jerk Will try with less voltage tonight. I have a strong feeling it is the board limiting me and not the RAM, so the settings below will most likely run with less Vdimm too.

the 544 is great
looks like nobody ran 544 with ddr3 before, so this is the WR, highest 544
congratulations!!!

its quite high too, i didnt even think 555 could get that high we need to bump up trcd to 6 as well to get decent speeds with cas6. well at least that was my experience. victors 555 really caught me by surprise and this is even better

I don't think Asus engineers didn't think of running 900MHz on the memory when they designed the board. Same for Intel and the chipset

thats probabaly true
if it helps, i checked on one of the p5k3s and 1800+ boots with 1.4v chipset voltage, havent tested for stability but i could bench in windows.

so it looks like your board is a dud...
is it an ES board? maybe an early sample with an early p35 nb?
Several early ddr3 boards couldnt get above 1500 memspeed and im pretty sure its the chipset. P35 first launched for ddr2 boards, so maybe gigabyte and others used those early chips for their ddr3 boards as well and then noticed that those early nbs integrated ddr3 mem controller sucks.
asus seems to have used the latest p35 nbs even for their early ddr3 boards, maybe they noticed this or they always keep their warehouses tidy and empty and hence didnt have older stock.

anyways, i hope intel is going to bin p35 as well and not just x38.
x38 is just too expensive and from what ive seen and heard so far not worth it compared to p35.

u workaholic!! :P u need to fix your bed first!

Hell yeah, no wonder you are tired all the time when you sleep in that bed
For those who dont know, i kinda broke fr3aks bed ^^
Now gorillakos, before you even start to b!tch at fr3ak, i tried to seduce him but he wouldnt give in, he loves you too much...

But you're doing justice to the good stuff from saaya da man

Just too bad the board sucks... hope you get a better board soon olli!

if you want to go above DDR3-1800-1900 with DDR3 RAM you need a CPU with very high FSB wall (500-520 MHz) and you have to try to raise the North Bridge Voltage, PLL voltage, and FSB Termination Voltage (obviously also vcore and vmem).

im not so sure about the pll voltage, does it really help you?
fsb wise or memory wise or cpu wise?
I bumped it up everytime i maxed out something but it never helped, so i left it at auto and i can reach 530fsb and 2ghz+ memspeed.
I guess it has to do with maxing out the cpu speed?
Thats the only thing i havent done yet

I am not so sure about the facts that Asus and Intel engineers didn't think of running 900MHz on the memory when they designed the boards, infact there are motherboards that are able to run memory above DDR3-2000 MHz (like P5K3 and Blitz Extreme). Obviously we are talking about benching sessions and not for daily use (but for daily use you could run for sure at DDR3-1600 or with some overvoltage at DDR3-1800).

well the blitz is gen2 of p35 ddr3, so already gen3 of p35. and i think the secret of the asus p5k3 boards clocking better than other ddr3 boards when they just came out was that they used the latest nbs and others used older stock.

Wasnt the first people who hit 2ghz with ddr3 asus engineers?
So yeah, they did know about it, but i think that was only weeks before the launch... i dont know but i think micron ddr3 arrived pretty late so asus probabaly didnt use it to test their boards. afaik there is no other ddr3 that can reach 2ghz, not even close, so i dont think asus knew about this and planned those high speeds when designing the p5k... but in the end only asus and micron will know

I agree about the fact that with these memories it could be better to have a chipset with default FSB of 400 MHz and similar processors able to run at 400 MHz as default.

yeah! not only this, but we need way more dividers or an un link mode like on 680! I really hope intel is working on this or nvidia will get a ddr3 chipset out soon... wait, i take that back, i hope nvidia releases a ddr3 chipset AS SOON AS THEY MANAGED TO GET RID OF ALL THE BUGS IN IT :P

And wouldnt it be cool if intel would release an Xtreme Edition cpu with a default fsb of 666?
Now THAT would rock! no more looking for high fsb capable cpus.
im sure there are cpus that can handle 666fsb and im sure intel could bin them...

sorry for the long post ^^