Secrect to DFI overclocked stability in Bank Interleaving?

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04-15-2005, 06:57 AM
dnottis

Secrect to DFI overclocked stability in Bank Interleaving?

First of all I have stability problems overclocked when it's enabled it seems. Took me awhile to come to this conclusion. I thought it was cooling so I've been playing with higher CFM fans, open case, and everything other setting imaginable. What exactly is bank interleaving and why does disabling it make my 2.7 GHZ overclock suddenly stable? Disabling seems to let me go farther.

However in the bios when I disable it, save changes and go back it will show that it's enabled again. I think part of my issue and the reason why stability is so spotty is because I will disable it run a bunch of tests to confirm stability then go back into the bios to make other changes at which point the board is re-enabling it on it's own - then I have problems so I back it down to still have issues (which is why this is so frustrating). Till now I wasn't paying attention to the setting when I went back into the bios. However I think this is the setting that I've been looking for!

If anyone can confirm that they see it auto enabling upon re-entering the bios or having stability issues that are resolved once it's disabled - please let me know. Thanks!!

Dean
04-15-2005, 06:59 AM
eva2000

depends on ram for Gskill TCCD and OCZ 2x 1GB Performance 3-3-3-8 modules enabling interleave = more stability on DFI NF4 SLI-D but BH-5 ram doesn't like interleaving
04-15-2005, 07:00 AM
dnottis

Ok it seems that was a big with 331 bios, now with 441 I shows disabled. But this is the first time I disabled it with 441 and I can superPI at 2.7 GHz again. Moving FSB up will post updated results as I get them.
04-15-2005, 07:02 AM
dnottis

Quote:

Originally Posted by eva2000

depends on ram for Gskill TCCD and OCZ 2x 1GB Performance 3-3-3-8 modules enabling interleave = more stability on DFI NF4 SLI-D but BH-5 ram doesn't like interleaving

ok, this is using the 1GB of LE in my signature.
04-15-2005, 07:11 AM
ben805

my 512LA prefer to have it disable regardless what bios I use.
04-15-2005, 07:32 AM
pershoot

Quote:

Originally Posted by eva2000

depends on ram for Gskill TCCD and OCZ 2x 1GB Performance 3-3-3-8 modules enabling interleave = more stability on DFI NF4 SLI-D but BH-5 ram doesn't like interleaving

hmmm.. i wil try testing with interleaving off. that may be why i cant find anything stable. too bad disabled chops ~3k mb/s throughput off.
04-15-2005, 07:39 AM
eva2000

Quote:

Originally Posted by pershoot

hmmm.. i wil try testing with interleaving off. that may be why i cant find anything stable. too bad disabled chops ~3k mb/s throughput off.

yeah probably why Gskill on DFI does so well with 2.5-4-3 and 2.5-3-3 timings with interleaved enabled
04-15-2005, 07:53 AM
mad mikee

Interleave didn't work me either ....

(NOTE: APPLIES BETTER TO BP808 TCCD then others I think (only gskill vs PDP for comparison, sorry. ))

At first...:D Using Gskill GBLE, dropped down to lowest barely stable memtest speed and started the ramp up w/ it on. Took a couple of days, and now running as in sig (@ 2.5-4-3-7, trying same thing to get 2.5-3-3-7 in windoze now) :D

Burning GBLA (1G) same way on spares in the basement over the weekend, since only good for 2.5-4-3-7 (300FSB) so far :D
04-15-2005, 08:16 AM
musk

Quote:

Originally Posted by eva2000

depends on ram for Gskill TCCD and OCZ 2x 1GB Performance 3-3-3-8 modules enabling interleave = more stability on DFI NF4 SLI-D but BH-5 ram doesn't like interleaving

Eva2000,

do you think this could be what keeps my UTT from taking more than 3.0v in dual channel when single seems to work.

I might have to try when I get home.

musk
04-15-2005, 08:21 AM
eva2000

probably but disable it and find out
04-15-2005, 08:28 AM
dnottis

It does seem to have fixed my random stability @ 2.7 with it disabled.
:woot:
04-15-2005, 08:30 AM
mad mikee

Disabling interleave should improve everyones stability

but @ a performance hit. My technique MIGHT help on UTT/BH.. but you have to start lower. Find the tradeoff of max FSB/speed (if any) w/ interleave on (memtest) vs. if you can OC enough and/or compensate w/ settings to make up the difference. I have found a gain of 1-200 MB/sec w/ interleave on.

Of course w/ so few settings on the DFI this may be tricky ;) :wierd: (feeling I get when juggling it all for performance, talk about multi-variable analysis :eek: ) and then AGAIN in windows :brick:
04-15-2005, 08:33 AM
ben805

Quote:

Originally Posted by dnottis

It does seem to have fixed my random stability @ 2.7 with it disabled.
:woot:

I will always have it disable for the exact same reason, as I found the performance didn't compromise much(if any) at all.
04-15-2005, 08:37 AM
dnottis

http://www.3dxtreme.net/other/CPUS/3...0037/27DFI.jpg

Yes it's better at 2.7 and disabled than on at 2.65 ;)
04-15-2005, 10:20 AM
Gogeta

I think you're on to something here, dnottis. NO WAY this was possible before I disabled interleaving.

http://www.xtremesystems.org/forums/...id=28783&stc=1
04-15-2005, 10:32 AM
|3ourne

my LE kit does it with Interleaving Enabled. If you want Dnottis , ill post a Screenie of A64 Tweaker settings and Super Pi. Disabling Interleaving gave me a hit on my bandwidth which i didnt like :D . Although I needed 2.8V for it on the same Gskills which did 300 on Neo2 stable at 2.7V .
04-15-2005, 10:59 AM
HARDCORECLOCKER

:D AFAIK it only works with 1 gig or more - is there an advantage to disable it with 2 x 256 ?

:toast:
04-15-2005, 02:51 PM
dnottis

Quote:

Originally Posted by |3ourne

my LE kit does it with Interleaving Enabled. If you want Dnottis , ill post a Screenie of A64 Tweaker settings and Super Pi. Disabling Interleaving gave me a hit on my bandwidth which i didnt like :D . Although I needed 2.8V for it on the same Gskills which did 300 on Neo2 stable at 2.7V .

I havent even been able to start playing with memory settings - got another DFI ultra-D in today - this one likes to randomly freeze... argh. Gonna yank the chipset and do it up with some as5 later tonight.
04-15-2005, 03:02 PM
|3ourne

I had to play with ALOT of mem timings to get to 300 mhz stable. 290 mhz was a breeze , everything set to auto except the main 4 timings. But the going got tough after that , And after sleepless nights of memtesting and about a million cigarettes and soda , i finally got my stable config :D. My chipset voltage is a def. as is LDT bus voltage. Havent needed more than that yet and my chipset is at 42 C to 45 C all the time , so im happy.
04-15-2005, 03:56 PM
dnottis

Quote:

Originally Posted by |3ourne

I had to play with ALOT of mem timings to get to 300 mhz stable. 290 mhz was a breeze , everything set to auto except the main 4 timings. But the going got tough after that , And after sleepless nights of memtesting and about a million cigarettes and soda , i finally got my stable config :D. My chipset voltage is a def. as is LDT bus voltage. Havent needed more than that yet and my chipset is at 42 C to 45 C all the time , so im happy.

Can u post the timings u ended up using?
04-15-2005, 04:02 PM
Gogeta

Yeah I took a pretty bad hit in bandwidth...but its better than my previous 24/7 setting (290*9, 166mhz divider). I'm at ~7600mb/s right now in Win2k, so I'm going to install xp and tweak tref and dram strength timings.
04-15-2005, 04:08 PM
dnottis

I am at 300 x 9 just default settings in the 414-1 bios getting just over 7800 in Sandra.
04-15-2005, 04:16 PM
|3ourne

1 Attachment(s)

thats my A64 setting , voltage is 2.8V . Lemme know if you need anything .
04-15-2005, 04:18 PM
dnottis

Quote:

Originally Posted by |3ourne

thats my A64 setting , voltage is 2.8V . Lemme know if you need anything .

Much appreciated!! :)
04-15-2005, 04:42 PM
|3ourne

Quote:

Originally Posted by dnottis

Much appreciated!! :)

No worries mate . I consider us in the same boat . We both along with meatfrog were looking for that magic winnie for a while now ;) . Im glad we all got the ones we wanted :D . Now whip that winnie and gskill in shape and run that :banana::banana::banana::banana::banana: !!! :fact: :slapass: :hrhr: :cheer:
04-16-2005, 04:26 AM
joe2004

Eva is 100% right. In my case, and this is 2x256 LA TCCD bank interleaving makes it more stable not less. As far as performance goes I don't see any difference.
04-16-2005, 05:15 AM
eva2000

Quote:

Originally Posted by joe2004

Eva is 100% right. In my case, and this is 2x256 LA TCCD bank interleaving makes it more stable not less. As far as performance goes I don't see any difference.

of course :)
04-16-2005, 05:52 AM
pershoot

bank interleave disable, unfortunately did not solve my issues. oh well.. i could preorder venice;)
04-16-2005, 08:53 AM
jumanji969

Quote:

Originally Posted by pershoot

bank interleave disable, unfortunately did not solve my issues. oh well.. i could preorder venice;)

Man I love posts like these, makes me so happy venice is coming out. I'm going to be able to move to an A64 setup for dirt cheap.
04-16-2005, 10:59 AM
Gogeta

Quote:

Originally Posted by jumanji969

Man I love posts like these, makes me so happy venice is coming out. I'm going to be able to move to an A64 setup for dirt cheap.

LOL. You can buy my Winchester when I sell it in a month or so. :fact:
04-16-2005, 12:00 PM
|3ourne

same here , ill have my 2.7 ghz winnie for sale once i get my venice :D .
04-16-2005, 12:03 PM
Ailleur

Hurray! Cheap part for poor people (me)!

On topic, i havent really pushed my memory all that far (around 260mhz cas 1.5 or 2) but i left bank interleaving on with my bh5 memory. Everything went fine, up to there anyway.
Cas 2.5 wont run no matter what though, i tried getting 285 1:1 with cas 2.5 but my memory doesnt seem to wanna run at cas2.5, maybe thats whats causing it? Ill have to try that when i get home
04-16-2005, 02:17 PM
Gogeta

Quote:

Originally Posted by Ailleur

Hurray! Cheap part for poor people (me)!

On topic, i havent really pushed my memory all that far (around 260mhz cas 1.5 or 2) but i left bank interleaving on with my bh5 memory. Everything went fine, up to there anyway.
Cas 2.5 wont run no matter what though, i tried getting 285 1:1 with cas 2.5 but my memory doesnt seem to wanna run at cas2.5, maybe thats whats causing it? Ill have to try that when i get home

BH5 has big problems running anything but cas 1.5 and 2.
04-16-2005, 02:42 PM
dnottis

Hey guys, here's another tip -

I just got in another DFI Ultra-D, since the other one was having issues. I put the new one together and left the chipset cooler / TIM in tact. I was having random freezes at 300 FSB. Last night I yanked the board, removed the terrible yellow putty on the chipset and replaced it with a nice coating of as5. I can now prime and super pi32m at 300 FSB x 9 with only 1.53 volts. Very happy with the new DFI Ultra-D, the last one and the RMA had some issues. The first one was the worst - random reboots, problems with USB etc. I had done this with the first one too, but sometimes a bad board is just a bad board.

Bottom line - removed the yellow putty on the chipset and replace it with some quality AS5 (or comperable TIM).
04-16-2005, 02:54 PM
eva2000

wow i still have stock what ever paste under my DFI NF4 SLI-D's chipset heatsink heh
04-16-2005, 02:56 PM
dnottis

Quote:

Originally Posted by eva2000

wow i still have stock what ever paste under my DFI NF4 SLI-D's chipset heatsink heh

tsk tsk ... :slapass:
04-16-2005, 02:57 PM
SVTSnake

That TIM material it comes with is like gum! That is 1 of the first things I do when installing a new system, yank the chipset cooler and replace the stock goop with some AS5 (in the case of NF4 chipset or Intel chipset) or Ceramique with the NF3 type chips.
04-16-2005, 03:01 PM
eva2000

Quote:

Originally Posted by dnottis

tsk tsk ... :slapass:

hehe but that hasn't stopped me pumping out the numbers

http://www.fileshosts.com/DFI/NF4_SL...5_24264_tn.jpg
04-16-2005, 03:02 PM
irfs

It does make a difference with my Old Geil UltraX

Quote:

Originally Posted by dnottis

First of all I have stability problems overclocked when it's enabled it seems. Took me awhile to come to this conclusion. I thought it was cooling so I've been playing with higher CFM fans, open case, and everything other setting imaginable. What exactly is bank interleaving and why does disabling it make my 2.7 GHZ overclock suddenly stable? Disabling seems to let me go farther.

However in the bios when I disable it, save changes and go back it will show that it's enabled again. I think part of my issue and the reason why stability is so spotty is because I will disable it run a bunch of tests to confirm stability then go back into the bios to make other changes at which point the board is re-enabling it on it's own - then I have problems so I back it down to still have issues (which is why this is so frustrating). Till now I wasn't paying attention to the setting when I went back into the bios. However I think this is the setting that I've been looking for!

If anyone can confirm that they see it auto enabling upon re-entering the bios or having stability issues that are resolved once it's disabled - please let me know. Thanks!!

Dean

I hit 290HTT no dividers but i did notice when disabling Bank interleaving system was more stable and you are able to increase the FSB more.
But who knows maybe different memorys have different yeilds. I dont know which type of TCCD i have all i know is that its pretty old. If any1 knows how to tell pls let me know.

thanks
04-16-2005, 03:32 PM
dnottis

Quote:

Originally Posted by SVTSnake

That TIM material it comes with is like gum! That is 1 of the first things I do when installing a new system, yank the chipset cooler and replace the stock goop with some AS5 (in the case of NF4 chipset or Intel chipset) or Ceramique with the NF3 type chips.

Same here but I've never seen it really affect stability like this! EVA 2000, what kind of cooling are u using?
04-16-2005, 05:39 PM
Grayskull

With certain types of memories disabling bank interleave does heavily improve overclockability. :fact: For example, OCZ Platinum RevII 2-2-2-5 benefit heavily. And yes, certain mobo vendors have found this out and exploited it to achieve better O/C numbers than their competitors, especially for the purpose of web reviews. One particular set of dimms that I've tried picked up around 35-40MHz at the same timings by just turning off the interleave.

Quote:

Originally Posted by dnottis

Same here but I've never seen it really affect stability like this! EVA 2000, what kind of cooling are u using?
04-16-2005, 05:48 PM
eva2000

Quote:

Originally Posted by Grayskull

With certain types of memories disabling bank interleave does heavily improve overclockability. :fact: For example, OCZ Platinum RevII 2-2-2-5 benefit heavily. And yes, certain mobo vendors have found this out and exploited it to achieve better O/C numbers than their competitors, especially for the purpose of web reviews. One particular set of dimms that I've tried picked up around 35-40MHz at the same timings by just turning off the interleave.

yeah BH-5 is on memory that excels with interleave disabled heh

dnottis, i'm using MCW6002 + MCP650+MCP600 in series with Thermochill 120.3 with 3x 120x38mm panaflo 103cfm fans to cool cpu only and 2x60x25mm fans over ram modules :)
04-16-2005, 07:12 PM
dnottis

Quote:

Originally Posted by eva2000

dnottis, i'm using MCW6002 + MCP650+MCP600 in series with Thermochill 120.3 with 3x 120x38mm panaflo 103cfm fans to cool cpu only and 2x60x25mm fans over ram modules :)

I think I need to go water - this chip did 2.8 @ 1.6 on water forthe previous owner - for some reason I cannot prime any higher than 302mhz with this chip and it's only at 1.53v. I think my limitation now is cooling.

Dean
04-16-2005, 11:29 PM
mrlobber

Hey, but wasn't it that if turning bank interleaving off, you got a noticeable performance hit?
04-17-2005, 07:19 AM
dnottis

Quote:

Originally Posted by mrlobber

Hey, but wasn't it that if turning bank interleaving off, you got a noticeable performance hit?

Nah, it's slight actually. Actually I can prime at 1.53v (9x300) with it disabled or 1.58v (9x300) with it enabled. Its currently at 8hr, 45mins prime stable at 9 x 300 with it enabled.
04-17-2005, 12:35 PM
Gogeta

Quote:

Originally Posted by mrlobber

Hey, but wasn't it that if turning bank interleaving off, you got a noticeable performance hit?

I noticed about 200-300mb/s difference in Sandra with it disabled...but it seems to be much easier on my chip's mem controller - I gained ~20MHz. Need to do more testing.
04-17-2005, 01:13 PM
dnottis

Quote:

Originally Posted by Gogeta

I noticed about 200-300mb/s difference in Sandra with it disabled...but it seems to be much easier on my chip's mem controller - I gained ~20MHz. Need to do more testing.

I get 7800 without it and 7916 with it enabled. Benchmarks are up a bit too. Since it's only .08v to enable it and run stable - what the hell I'm doing it :)

14 hours prime stable so far :woot:
04-17-2005, 01:13 PM
craig588

This is something like running TRCD at 2. Only BH5 and UTT based ram can do it reliably at high speeds. Only a few types ram can run well and reliably with interleaving enabled.

Or is this completely wrong?
04-17-2005, 01:15 PM
dnottis

Well I managed it but it took .08v more to do it stable, must be extra load for the memory controller.
04-17-2005, 01:38 PM
craig588

Something less than .1V on memory is basicly insignifigant. I wouldn't worry about killing it.
04-17-2005, 01:43 PM
dnottis

its actually .08v vcore that made it prime stable with bank interleave enabled - bumping vdimm didnt help, so I'd assume its the memory controller.

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