Mushkin 998679 Breaks 2700Mhz Triple Channel

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06-02-2010, 09:28 AM
Lsdmeasap

Mushkin 998679 Breaks 2700Mhz Triple Channel

While these are not the greatest of timings, I did stop myself from going to CAS 10, which I think now maybe I should have to see how high that would take me?

This is Mushkin 998679 7-8-7-20 1600Mhz kit
http://www.mushkin.com/Memory/Blackline/998679.aspx

http://img29.imageshack.us/img29/1180/ud7ready2s.jpg

http://img691.imageshack.us/img691/5787/fogs.jpg

http://img694.imageshack.us/img694/5057/setupsn.jpg

I had a terrible time this session and chose the wrong OS and disk setup for much of what I planned to accomplish, so that may have also hindered my memory clocking progress too...

Not sure, I can only hope for a better session next time around.

I also did not have a second sensor wire, so I could not monitor the memory temps vs voltage, so I wasn't sure what temps the memory was reaching, maybe once I get another sensor I can do better. Not even sure if the memory was actually getting all that cold, maybe not really so these could probably go a bit higher once I can do things properly

Max 9-11-x-x @ 2691.6Mhz

http://img443.imageshack.us/img443/665/snap1o.png

http://valid.canardpc.com/show_oc.php?id=1212674

Max 9-12-x-x @ 2713Mhz

http://img99.imageshack.us/img99/8526/snap2j.png

http://valid.canardpc.com/show_oc.php?id=1213011

Max CPU-z validation @ 5.248.21Mhz sadly

I had a terrible time with 050 BSOD's this time around :shrug:

http://img130.imageshack.us/img130/4326/snap3yz.png

http://valid.canardpc.com/show_oc.php?id=1215766
06-02-2010, 10:17 AM
Mafio

awesome work
VDIMM?
06-02-2010, 10:32 AM
Lsdmeasap

Thanks!

1.74/1.76 Vdimm

Tried 1.78-1.82 and that did not help things any, I think I needed to secure the foil to the memory more than I did, not so sure the memory was getting as cold as it could have been.
07-14-2010, 02:47 PM
westsider

it has actually very less with ddr3 to do

i had only one i7 cpou that could do 5.1Ghz uncore
99% of them do only 4.7-4.8 and you can only achieve 2300-2400Mhz max vali

with my i7 960 i could hit 2540MHz with cas 8 and 9 too
it was uncore limited
i think your result is great but it depends more on your 32nm cpu uncore then on rams
07-19-2010, 06:42 PM
Lsdmeasap

Quote:

Originally Posted by westsider

it has actually very less with ddr3 to do

i had only one i7 cpou that could do 5.1Ghz uncore
99% of them do only 4.7-4.8 and you can only achieve 2300-2400Mhz max vali

with my i7 960 i could hit 2540MHz with cas 8 and 9 too
it was uncore limited
i think your result is great but it depends more on your 32nm cpu uncore then on rams

This is 980X CPU, uncore only needs to be 1.5 times memory multiplier, and if you look at my CPU-z validations you will see that uncore is well below 4Ghz in these results.

You are right kinda though, my CPU IMC is the limit I am running into, but it's not the Uncore at all though. I hit around the same 2700ish mark no matter CAS, Volts, Settings, Temps, so the IMC stops there I'm pretty sure.

P55 on the way though, hopefully I will run into a good CPU that will allow me to break 3000Mhz, but sadly it will have to be dual channel now though.
07-19-2010, 06:48 PM
Sn0wm@n

tinfoil dram dice pot? :O wow .... sick clock on that ram
07-19-2010, 07:01 PM
Lsdmeasap

Thanks!

:) yep tin foil!

I saw a post here by another member and it encouraged me to give it a shot!

Worked out great, but I think I may grab a dominance pot sometime and see how well it sits on the naked memory instead of this foil idea.
07-19-2010, 08:20 PM
Sn0wm@n

allright .. but its always fun to see wacky idea actually working to an high extent
07-19-2010, 08:26 PM
dinos22

impressive Ed
these B0s seems to have decent RAM controllers hey :)
07-19-2010, 08:45 PM
Lsdmeasap

Thanks!

Ya, seems pretty good to me, but it is the only 980X I have used so not sure how others or retails are.

I think this is as much as it can do though, I can do 2640 on water, nothing cooling the memory, and only the little bit more you see above with the CPU on Dice. Nothing more helps, looser timings, more/less voltage, even single channel and it all ends roughly around the same Mhz.

It may get a little bit more with Ln2, but I doubt much more though as I think that's about all the IMC can put out memory-wise.

P55A-UD6 on the way so I can break 3000Mhz, hopefully I'll come across a CPU with a strong IMC to push past this.
07-19-2010, 09:41 PM
Johnny87au

Awesome clocks dude, should run some Benches :)
07-19-2010, 09:58 PM
Lsdmeasap

Thanks!

I just got a new pot, so I will be running some benches again soon with these!

I did a run last weekend, but not with extreme memory clocks or anything, and I didn't think my results were extreme enough to go into the extreme section so I only posted them at OCN.

Got my first Sub 8s PI run with these though, 7.594s!
07-20-2010, 06:09 PM
Johnny87au

Quote:

Originally Posted by Lsdmeasap

Thanks!

I just got a new pot, so I will be running some benches again soon with these!

I did a run last weekend, but not with extreme memory clocks or anything, and I didn't think my results were extreme enough to go into the extreme section so I only posted them at OCN.

Got my first Sub 8s PI run with these though, 7.594s!

Nice mate, Could u check which ic's these are using and take a pic of the PCB? hehe.. Mind testing on air too? Im in search of some good triple channel ram .. Need the highest OC'd with the tightest timings, anything up to 2000mhz will do..
07-21-2010, 09:55 AM
Lsdmeasap

Quote:

Originally Posted by Johnny87au

Nice mate, Could u check which ic's these are using and take a pic of the PCB? hehe.. Mind testing on air too? Im in search of some good triple channel ram .. Need the highest OC'd with the tightest timings, anything up to 2000mhz will do..

YGPM about the IC's. As for air testing, you can check the link in my signature for my full review on them, these will do 2600+ on air with the right CPU. I have not tested stability at higher speeds like that, but I would expect 2200-2400 can be easily made stable
07-21-2010, 12:27 PM
justin.kerr

how much VTT? :D
07-21-2010, 06:28 PM
Johnny87au

Quote:

Originally Posted by Lsdmeasap

YGPM about the IC's. As for air testing, you can check the link in my signature for my full review on them, these will do 2600+ on air with the right CPU. I have not tested stability at higher speeds like that, but I would expect 2200-2400 can be easily made stable

Thanks mate, You should test the 998750 ddr3-2000 Cl8, they use hypers mgh-e hypers;)
07-21-2010, 06:33 PM
Johnny87au

sorry for double post, these ones to be more specific :) http://www.newegg.com/Product/Produc...shkin%20998750
07-21-2010, 10:26 PM
Lsdmeasap

Quote:

Originally Posted by justin.kerr

how much VTT? :D

For what speeds do you want to know, the ones in the OP or the ones I mentioned on air/no cooling? It really all depends on the uncore I was using at the time, not all that much really though.

Quote:

Originally Posted by Johnny87au

Thanks mate, You should test the 998750 ddr3-2000 Cl8, they use hypers mgh-e hypers;)

Send me a set and I will :D

Quote:

Originally Posted by Johnny87au

sorry for double post, these ones to be more specific :) http://www.newegg.com/Product/Produc...shkin%20998750

I don't have any, and neither does newegg, so I can't :shrug:

998826 under testing for review right now though :up: