OC Report - Cellshock DDR3 1866 BLUE D9JNL

[mike]

Work in progress - just rerunning everythig with 7/7/7/14....pics coming very soon




OC Report: Cellshock DDR3 1866 BLUE D9JNL

I have spend some quality time with a very nice set of Cellshock's newest line of DDR3 and was amazed to find out what nicely binned and matched Micron D9JNL can do. Unlike the Micron D9GTR which is scaling extremely well with Vdimm , the D9JNL chips are really shining at low Vdimm by outperforming the D9GTR chips at equal voltages. The Micron D9JNL chips, which most benchers consider to be inferior, are actually needing 0.1V - 0.2V less for equal clocks.



The Memory:

Part number : CS3222770
Capacity: 2GB-Kit (2x 1GB)
Configuration: 128Mx64 DRAM Micron Device
Config: 128Mx8 PCB 240pin
Module Info: unbuff. non-ECC, DDR3 DIMM
Speed: PC15000
CAS Latency: 8-8-8-16
VDIMM: 1,7V-2,0V
Warranty: 5years

The test setup:

OS: Windows XP SP2
CPU: Intel Xeon E3110 – air cooled
Mobo: Asus Maximus Extreme – Bios 9.05 - NB water cooled
PSU: PC Power & Cooling 750W
GPU: NVidia 9600GT / 9800GX2
HDD: Gigabyte I-Ram

The Windows XP installation is 100% bone stock without any tweaks, with the exception of having Large System Cache enabled for 32m runs.
The testing was done with the mindset for stability for Super Pi as well as 3D- and PC-Marks and NOT for max results ( for now...)

Super Pi Results:

Single Super Pi 1M CAS7 1T clocks:

VDIMM: 2.08V = 2033mhz

cpu limited (air...) I think -

youtube vid: http://www.youtube.com/watch?v=gWE3k8EpaNo

Single Super Pi 1M CAS8 2T clocks:

VDIMM: 2.06V = 2250mhz

on P5E3 Premium

Single Super Pi 32M CAS7 1T clocks:

VDIMM: 1.80V = 1775mhz

VDIMM: 1.84V = 1810mhz

VDIMM: 1.90V = 1870mhz

VDIMM: 1.94V = 1910mhz

VDIMM: 2.00V = 1940mhz

VDIMM: 2.06V = 1998mhz

VDIMM: 2.08V = 2004mhz




Secondary timings are often not tweaked to perfection – often these are too loose. For example tRFC could probably have been tigher at lower mhz - and really needed lossening up at high mhz

crappy vid of running 1992 2.06v @ http://www.youtube.com/watch?v=kVqnxPJuKh0

Single SuperPi32M CAS 8 1T clocks:

VDIMM: 1.90V = 2080mhz

My Asus Maximus Extreme unfortunately appears to not be able to go past 2080 – I have had this problem with many different sets of memory.

Single SuperPi32M CAS 6 1T clocks:

VDIMM: 1.80V =
VDIMM: 1.84V =
VDIMM: 1.90V =
VDIMM: 1.94V = 1680mhz
VDIMM: 2.00V =
VDIMM: 2.06V = 1750mhz
VDIMM: 2.08V =

I have to revisit all my CAS6 results and post them later.[/INDENT]

Memory Bandwidth Results:

Everest Mem Read :2000mhz 7/7/7/14 @ 2.06V

Everest Mem Write: 2000mhz 7/7/7/14 @ 2.06V


Everest Copy: 2000mhz 7/7/7/14 @ 2.06V



Everest Latency: 2000mhz 7/7/7/14 @ 2.06V




3DMark Results:

3Dmark05

VDimm = 2.1V 7/7/7/14 1T @ 2000mhz



Asus P5E3 Prem. / 9800GTX all default settings

PC Mark Results:

PCMark05 memory suite

VDimm = 2.1V 7/7/7/14 1T @ 2000mhz



Asus P5E3 Prem. / 9800GTX all default settings

NOTES:

-Actual Vdimm was about 0.01V higher than set in BIOS – all above Vdimms are BIOS set ( so +0.01V for real value )

-This set of Cellshock DDR3 scales very well until 2.07V but at 2.11V it errors out hard to and refuses to boot had high clockspeeds.

-The max CAS7 clocks were done with 2.09V , but in memtest already a lot more errors were showing than when running 2.07V.

-This set does not like different CAS and tRCD timings, which I believe is common for this type of micron chips – hence the 7/7, 6/6, 8/8 timings used.

-Unfortunately CAS 6 results suffer a bit compared to D9GTR equipped memory, due to D9JNL's problem with handling higher voltages, which are needed for great CAS6 results.

-The Microns D9JNL allow running very tight Tras - 7/7/7/12 timings are possible to be run at almost the max clocks ( with between 4-16mhz hit in max frequencies compared to Tras 21), Tras 14 appear to be quickest for SuperPi 32m, Tras 12 is about 10 seconds slower compared to Tras14; Tras21 is about even with Tras 14


Cellshock DDR3 1866 compatibilty:

I have tested the Cellshocks on three different boards – the Asus P5E3 Premium ( X48), the Asus Maximus Extreme (X38) and on the EVGA 790I board. On all boards the memory ran without a hitch – but the X48 board really made this memory shine. Unfortunately I lost the board at the beginning of the testing due to extreme NB degradation and am not able to run with this board past 450FSB at this point.
I had pushed too much VNB; 1.89-1.91V on the P5E3 Prem. (with a very brief stunt of 1.97V to see if helps when things started going bad...to make things really really worse ...lol), while air cooling... ouch !
The Maximus now is on water cooling – which helps out greatly!

Memory Clocks were about 5-20mhz higher on the P5E3 Prem. vs. the Asus Maximus Extreme.
The X48 also allowed me to run 7/7/6 with tighter secondary timings, whereas the X38 board did not appear to like these primary timings at all.


The 790i is a decent performer, but the Intel chipsets are a bit better in terms of memory performance. Max mem clocks were also bit lesser for me on the EVGA 790i compared to the X38/X48 boards. I did not spend too much time on the 790i since massive OS corruption problems on this board ( Rev C0...hint) took all the joy out of memory clocking. With more tweaking I assume similar max memory clocks might be achievable.





Final thoughts

Compared to what Vdimm is necessary to match such clocks with older D9GTR Micron based memory, this trend is certainly a step forward for the real world user. Only for benching FSB limited Quad Core CPUs it could be preferable to have D9GTR based memory, where good sets can allow you to bench in the 1800+ region with CAS 6 timings. Something I still would love to also have in my arsenal.

All in all I really love this Cellshock set, it is a match made in heaven for a 24/7 high performance rig. The speeds that are obtainable with low voltages make them truly perfect for a insane gaming rig and/or bench systems which are running at the max all the time. Being able to run 1900mhz CAS 7 for my daily settings is more then I hoped for, especially without having to worry about potentially degrading the memory.





Mike

[Kasparz]

Great job Mike!

Only thing, this memory is

Part number : CS3222770
Capacity: 2GB-Kit (2x 1GB)
Configuration: 128Mx64 DRAM Micron Device
Config: 128Mx8 PCB 240pin
Module Info: unbuff. non-ECC, DDR3 DIMM
Speed: PC15000
CAS Latency: 8-8-8-16
VDIMM: 1,7V-2,0V
Warranty: 5years

If its 1866MHz Blue kit.

[Exedy]

Nice man

I LOVE this memory...so fast and beautifull...

[kiwi]

This set does not like different CAS and tRCD timings, which I believe is common for this type of micron chips – hence the 7/7, 6/6, 8/8 timings used.

Unfortunately CAS 6 results suffer a bit compared to D9GTR equipped memory, due to D9JNL's problem with handling higher voltages, which are needed for great CAS6 results.

Yep, that's the problem with JNLs. They don't like too much volts and they can't run tight timings. Other that that they are nice, certainly better than other chip makers

[FuriousSalesman]

I have to agree that it is beautiful. Tell me where I can get 4 gigs

[mike]

Great job Mike!

Only thing, this memory is

If its 1866MHz Blue kit.

edited thanks - I got it off the cellshock website - and guessed some of it the values - thanks a bunch!

Yep, that's the problem with JNLs. They don't like too much volts and they can't run tight timings. Other that that they are nice, certainly better than other chip makers

I know what you mean - but actually the perfromance hit appears to be minor. 24/7 performance is really what amazes me here, and you'll blow GTR away with this type of Micron chip at equal vdimm.

But I am also still hunting for some 6/5/5 godness. Unfortunately my Corsair Dominators 14400 C7 got damaged in shipping - and now I have no more voltage loving DDR3 - at least none that is running

[Exedy]

Where is possible to find this kit? Not even in tankguys..

[BenchZowner]

But I am also still hunting for some 6/5/5 godness.

I have a "feeling" telling me "those JNL will do a lot better at 6-6-5-18 than 6-5-5-18

Where is possible to find this kit? Not even in tankguys..

It's relatively ( almost brand ) new, so it shall take some time.
Ask Sascha ( Saaya ), he might have some info on that matter

[mike]

I have a "feeling" telling me "those JNL will do a lot better at 6-6-5-18 than 6-5-5-18



It's relatively ( almost brand ) new, so it shall take some time.
Ask Sascha ( Saaya ), he might have some info on that matter

on the X48 I managed 6/6/5, on the X38 6/6/6 seemed the way to go - but I am looking to find some 6/5 godness in form of a GTR kit

Yes Saaya should have the info OCFX - got mine thru him

[alexio]

Thanks for this nice little test Mike

How do these fair when tested separately?

[metro.cl]

This are great memory, sayaa told me to try 6-6-6- or 7-7-7- or 8-8-8- not other timings as they respond better this way.

Now Mike get a X48 P5E3 Deluxe is awsome, i'm limited by my CPU to 2100MHz i can do that 1.9v 8-8-8-18-2T but more is a no go.

[Gautam]

Those are some kickass clocks for <2.1v!! What'd I tell ya about wc'ing the nb?

[naokaji]

Where is possible to find this kit? Not even in tankguys..

memoryc.com has them in stock, they ship worldwide link

[Hyperhorn]

That are awesome Cellshocks!
Can reach 1000Mhz CL7 nearly at stock voltage and look very nice with that blue heatspreaders.

[saaya]

nice thread mike!
im really amazed you managed to get that mem running stable at 2ghz cas7
i dont know if this kit is clocking better than average... i never tested any kits at 2ghz cas7, so i dont know how many kits can do this.
Looking forward to seeing more results from other guys
What surprised me even more is that you got it stable at higher speeds on an x48 than on a 790 board or did i get that wrong?

I have a "feeling" telling me "those JNL will do a lot better at 6-6-5-18 than 6-5-5-18

well 665 didnt work for me, only 666. the only below jedec spec timings that worked for me was 776, all other timing combinations didnt really bring a clockspeed boost. D9JNL loves tight tras tho, in my testing 2 or more clocks tighter than D9GTR

and yes, the kit is brand new, more and more shops should have it now

[BadNizze]

Impressive kit you got there Mike! And a good review\Oc Report

@ Saaya This thread just won me over to the blue sida! So I won´t be bugging you any more over mail

[lukas69]

I have take it today and now testing with my P5k3 dlx
1800 cas 7-7-7-21 T1 1,95 volt work well play crysis

[BenchZowner]

well 665 didnt work for me, only 666

Speak of the devil

Sascha check some kits for 7-7-7-x @ DDR3-2000.
I have a feeling that you'll find lots of them being stable at this freq/timings.

[saaya]

I have take it today and now testing with my P5k3 dlx
1800 cas 7-7-7-21 T1 1,95 volt work well play crysis

only? ah, thats a 1800 kit not an 1866 kit you have there right?

Speak of the devil

Sascha check some kits for 7-7-7-x @ DDR3-2000.
I have a feeling that you'll find lots of them being stable at this freq/timings.

hmmm idk man... i guess the boards here must be limiting me... every kit i test runs a lot faster on the system of whoever i send it to
then again, i dont tweak the kits, i dont have time to find the sweet spots for every kit, i just need to seperate the great from the good kits, for that the boards still seem to work well, but i guess at higher speeds they hold me back... how much did you gain from modding your p5k dlx boards? think i should give it a try?

[eternal_fantasy]

then again, i dont tweak the kits, i dont have time to find the sweet spots for every kit, i just need to seperate the great from the good kits

Hmm that statement and a few prior (on other threads) to the same intent held me back on trying out these new blue modules, in fear of receiving only a "good" kit, as all the "great" ones are distributed to the reviewers and PRs...
Would hate to receive a pair that was only "average" compared to my four 1800 CellShock modules and a farcry from the performance of those cherry picked samples.

Was refreshing MemoryC site for it to start selling them for the past 2 weeks... oh well..

Anyone has a retail kit to try out?

nothing personal by the way, just disappointed.

[Kunaak]

its good to see some people finally recognizing that ram doesnt need huge voltages. if it OC's well... who cares how little voltage it responds to?

I certainly dont want to run 2.3 volts into my ram to hit 2100 mhz stable, if I can do it at 1.9 volts.

(thats a hypothetical comparison - just saying)

[M.Beier]

Hmm that statement and a few prior (on other threads) to the same intent held me back on trying out these new blue modules, in fear of receiving only a "good" kit, as all the "great" ones are distributed to the reviewers and PRs...
Would hate to receive a pair that was only "average" compared to my four 1800 CellShock modules and a farcry from the performance of those cherry picked samples.

Was refreshing MemoryC site for it to start selling them for the past 2 weeks... oh well..

Anyone has a retail kit to try out?

nothing personal by the way, just disappointed.

Normally manuf' dont do that... I dont think Cellshock does neither, but ofcause i dont know...
Think its safe, atleast when using same chips.

its good to see some people finally recognizing that ram doesnt need huge voltages. if it OC's well... who cares how little voltage it responds to?

I certainly dont want to run 2.3 volts into my ram to hit 2100 mhz stable, if I can do it at 1.9 volts.

(thats a hypothetical comparison - just saying)

Yada yada yada... Its the chips.. GTR is vdimm hungry, GTS a little less.. JNL / JNM (same just 78 ball), they need alot less vdimm...
- But apart from the electricity bill, who cares..? : - )
And if one wants low voltage ram, micron isnt the better choice... You've seen the 900mhz (DDR3-1800) at 1.5v, right? Retail specs...

[BenchZowner]

how much did you gain from modding your p5k dlx boards? think i should give it a try?

Hey Sascha,

Increasing the Vmch over the max in BIOS 1.7V gave me the following:
1) I could run a lower performance level than my previous best at the given FSB freq + DRAM Divider

2) Helped me gain stability in high frequencies ( past DDR3-2000 )

3) Helped my FSB overclocks on some CPUs...just a bit, nothing outrageous.

[camouflage]

Hmm that statement and a few prior (on other threads) to the same intent held me back on trying out these new blue modules, in fear of receiving only a "good" kit, as all the "great" ones are distributed to the reviewers and PRs...
Would hate to receive a pair that was only "average" compared to my four 1800 CellShock modules and a farcry from the performance of those cherry picked samples.

Was refreshing MemoryC site for it to start selling them for the past 2 weeks... oh well..

Anyone has a retail kit to try out?

nothing personal by the way, just disappointed.

Maybe You misunderstood saaya - I think what he calls "only" a good kit will be labeled to 1800 and the "great ones" to 1866.

Might be the same procedure as done by labeling a chip - i.e. an 8200, 8400 and 8500 comes from the same production line, after testing the "great ones" will be labeled to 8500.

[Kasparz]

1800MHz is D9GTR, 1866MHz is D9JNL.