Natasyerp Posted July 14, 2005 Posted July 14, 2005 Hey guys, ok here is the deal. got my A64 3000+ venice stable at 260fsb for 15.5+ hours in prime95 Ram on the other hand, I cant seem to get stable on any setting accept @ 220 @ 3.2V. I can get it to pass the 25 run of #5 in memtest @ 235 but anything above 220 fails test # 8, it passed @ 220 with these settings for 8.5 hours in memtest. I am going to post up my settings and maybe if any of you could just skim through them and see if you see anything i could change to get this up some more ? or is it possibly bad ram ? thanks guys ! htt/fsb - 220 Volt - 3.2v DRAM Frequency set (220) (1/01) CPC- enables CAS-2 trcd-2 tras-8 trp-2 trc-7 trfc-17 trrd-3 twr-3 twtr-2 trwt-3 tref-3120 twcl-auto Dram bank interleave - enabled dram skew control - increase dram skew value - 200 dram drive strength - 8 dram data drive strength - 3 max async latency - 6NS dram response time - fast read preamble time - 5NS idle cycle limit - 16x cycles dynamic counter - disabled r/w que bypass - 7x 32 byte granulation - disabled(8 bursts) Share this post Link to post Share on other sites More sharing options...
Conaway Posted July 14, 2005 Posted July 14, 2005 first check out the NF4 Bios Memory guide, it has helped me a ton. secondly, i am working on my tweak also, so far i have found that the following works for me. try lowering your tras to 6, there is a formula for it that works wonders. usually it is, CAS latency + tRCD + 2 clock cycles. to me it seems that tRFC works best on Auto, i could be wrong but i usually have probs otherwise. also through my experience so far it seems that the tRRD, tWR, tWTR, tRWT, and tREF are somewhat sensitive with this ram. just follow the guide in the forums. EDIT: oh ya and try raising your DRAM voltage to 3.3V, that helped me as well, this RAM is rated for high voltage so go ahead and try it, a little extra power can go a long way. i was reaching better numbers once i moved it to 3.3V from 3.2V. good luck. Share this post Link to post Share on other sites More sharing options...
Bikeman Posted July 14, 2005 Posted July 14, 2005 Building my first a64 system, and alas its not even for me... But I do get to play with it before it gets picked up.. Quick and dirty.. Lanparty SLI DR Bios 623-3 ocz gold pc 3200 4200x2 default mem timings.. 104% on cpu voltage 2.7 on mem voltage. Still tweaking.. but its prime 95 stable at 245x10, but 1 of the two cores is prime 95 stable at 265x10 overnight while the other one bombs out in under a minute.. What a bummer... Share this post Link to post Share on other sites More sharing options...
Natasyerp Posted July 16, 2005 Posted July 16, 2005 by bumping it up to 3.3 you have to move the jumper to the 4v position correct ? i was iffy on doing that since i have read alot of people having stability issues and heat issues when moving the jumper ? basically so far, ran it 20 hours stable in prime95 at 220.5 , seems its all i could get out of it with these settings. 245 fsb on the cpu, need better cooling for more on that it would seem haha :cool: Share this post Link to post Share on other sites More sharing options...
krnxpride83 Posted July 16, 2005 Posted July 16, 2005 im actually at 3.4v... try that.. my current settings.. DRAM Configuration Settings: Command Per Clock (CPC) - Enable CAS Latency Control (Tcl) - 2.0 RAS# to CAS# delay (Trcd) - 02 Bus Clocks Min RAS# active time (Tras) - 06 Bus Clocks Row precharge time (Trp) - 02 Bus Clocks Row Cycle time (Trc) - 9 Bus Clocks Row refresh cyc time (Trfc) - 17 Bus Clocks Row to Row delay (Trrd) - 02 Bus Clocks Write recovery time (Twr) - 3 Bus Clocks Write to Read delay (Twtr) - 1 Bus Clocks Read to Write delay (Trwt) - 3 Bus Clocks Refresh Period (Tref) - 3120 Cycles Write CAS Latency (Twcl) - 1 DRAM Bank Interleave - Enabled DQS Skew Control - Auto DQS Skew Value - 0 DRAM Drive Strength - 3 DRAM Data Drive Strength - 1 Max Async Latency - 9.0 Dram responce time - Normal Read Preamble Time - 8.0 IdleCycle Limit - 128 Dynamic Counter - Disable R/W Queue Bypass - 16 x Bypass Max - 07 x 32 Byte Granularity - Disable(8 Bursts) PCI-E Payload: 256 Share this post Link to post Share on other sites More sharing options...
Natasyerp Posted July 16, 2005 Posted July 16, 2005 wow thats some pretty nice overclocking you got there :nod: So no problems for either of you guys with moving the jumper to the 4v position and upping the voltage ? Share this post Link to post Share on other sites More sharing options...
suio Posted July 16, 2005 Posted July 16, 2005 OCZ does not recommend using the 4V JP17 option. Buy a RAM booster instead. Share this post Link to post Share on other sites More sharing options...
pershoot Posted July 16, 2005 Posted July 16, 2005 wow thats some pretty nice overclocking you got there :nod: So no problems for either of you guys with moving the jumper to the 4v position and upping the voltage ? 5v feed is fine. just put a fan in that top right corner of the board and have a fan on the dimms from 2.9v+. dont go below 3.3 while on 5v feed. Share this post Link to post Share on other sites More sharing options...
Conaway Posted July 16, 2005 Posted July 16, 2005 OCZ does not recommend using the 4V JP17 option. Buy a RAM booster instead. yes they do. ocz enourages overclocking and using the 4V jumper that's why they have their perormance series. they wouldn't have specifically designed their high voltage ram if they didn't intend for it to be used that way, that's why their perfoance series is under warranty up to 3.4V in some models. you don't need a ram booster, don't waste your money. i am using the 4V jumper, there are no problems with it, you just have to find the settings that work best for you. i suggested 3.3v b/c its plenty of power for 250fsb, even 3.2V is, but do what you feel comfortable with. Share this post Link to post Share on other sites More sharing options...
suio Posted July 16, 2005 Posted July 16, 2005 http://www.bleedinedge.com/forum/showthread.php?t=11999 Share this post Link to post Share on other sites More sharing options...
3 Posted July 16, 2005 Posted July 16, 2005 Make sure you have the memory in the yellow slots and you have the 623-2 BIOS. Mine runs stable @ 246 HTT with 1.5-2-2-3-1T timings @ 3.4V. Share this post Link to post Share on other sites More sharing options...
suio Posted July 16, 2005 Posted July 16, 2005 yes they do. ocz enourages overclocking and using the 4V jumper that's why they have their perormance series. they wouldn't have specifically designed their high voltage ram if they didn't intend for it to be used that way, that's why their perfoance series is under warranty up to 3.4V in some models. you don't need a ram booster, don't waste your money. i am using the 4V jumper, there are no problems with it, you just have to find the settings that work best for you. i suggested 3.3v b/c its plenty of power for 250fsb, even 3.2V is, but do what you feel comfortable with. Try this link: http://www.bleedinedge.com/forum/showthread.php?t=11999 Share this post Link to post Share on other sites More sharing options...
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now