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Anyone have suggestions for ocing this RAM to match HTT

D

DBoy00

Junior Member
I am running:

AMD Athlon 64 3200+
This ram OCZ Performance series rev.3 PC3200 512MB,
DFI Lanparty UT nforce 3

I currently can get the CPU HTT running at 225, with the ram also at 225 at default timings, 2.5-3-3-6. However my CPU is currently at 230 HTT, but my memory causes crashes because it cannot run at 2.5-3-3-6 at 230, however i can get into windows with 3-3-3-6 but it blue screens after a few tests.

So therefore i am currently running the memory at 9/10 ratio with the HTT(FSB) of the CPU, which results in a memory clock of 207... Since it's not near the memories limits i downed the CAS resulting in timing to 2-3-3-6.

The memory tests in SiSandra and PCMark2004 give me better results for the 225/230 memory clocks even though at 207 I get a better CAS timing. Does anyone know how I can get a stable 230 clock by loosening timings?

In the bios i only understand how to tweak the:

Tcl, CAS latency control
Trcd, RAS to CAS delay
Tras, min RAS active time
Trp, Row precharge time
Trc, Row cycle time

The rest of the settings i do not understand and do not know how to modify to tweak my memory in order to get it to run at 230 clock speed, these include:

Trrd, Row to Row Delay
Twr, Write Recovery Time
Twtr, Write to read delay
Trwt, Read to write delay
Tref, Refresh Period
Twcl, Write CAS Latency

DQS Skew Control
DQS Skew Value
DRam Drive Strength
Max Async Latency
Read Preamble Time

If anyone could give any pointers on the things I do mess with or the things i don't know how to mess with please do give suggestions.

I've seen on review of the DFI Lanparty nforce3 board of them making a OCZ EL PC3200 go to DDR616, 308 clock speed at 3-3-4-10 timings. I know my RAM is performance series and not enhanced latency series but they were tweaking with all the options. Therefore I was wondering if I could get some tips to tweak the ram to my advantage. Thank you in advanced
 
Have to tried upping the vdimm (voltage to ram). Assuming your board provide for that.
 
Is my question really hard to answer? sorry for posting so much if it is.

Thanks Fern for the response, yeah i've went up to 2.8V and i think i've tried 2.9, however I don't know if going at such high voltages with only 2 casefans in the system is ok.

Is there a way to know if the voltage upped is too high and causing too much heat? I know that CPUs when nearing overheat will just cause the system to reboot or even shut down (due to motherboard protection) and this is the same with VGA's if it overheats it just restarts or locks. However I don't see where I can monitor my RAM temperature and when my case was open i just touched the RAM when I knew it was near it's limits.

Therefore I have been clcoking with a limit of 2.8VDimm. Anyone have anymore input?

I have currently changed my HTT on my AMD 64 3200+ to 225, and run the RAM at 1:1 at 2.5-3-3-6. It is a bit slower on the CPU clock but the RAM benches much better.

I really wonder... how the OCZ 3200 Enhanced Latency Series 512MB did so much better in OCing then i could ever achieve...


One more question if anyone reads this is, does anyone know how to lower the multiplier on a AMD 64 3200+ Newcastle 512kb cache core. I've seen the 2.0ghz 1024kb cache Clawhammer core have lowered multiplier and raised FSB but I don't know if that is also applicable to my Newcastle.

Most of my questions have some base on the DFI Lanparty review found here: http://www.anandtech.com/mb/showdoc.aspx?i=2198
 
Make sure you set the command rate to 2T. That's how I got my RAM up to speed on the Lanparty. I forget what the name of the setting is exactly, but the options are auto, enabled and disabled. Make sure it's disabled.
 
yeah about the 2T, i've seen lots of people post that they go at 2T setting, what setting is that exactly anyone can clarify?

i'll go ahead and try configuring things that are similar to you description.

Thanks, going to go tweak now 🙂.

Edit: yeah the option is right under the DRAM Frequency Set Option it is called "Command per Clock" CPC.

However after disabling it, moving FSB to 228 (up from 225) my benchmarks for memory in SiSandra2004 and PCmark are now lower, and also system seems less stable. I think i'll try getting it to 227 with a 2.9VDimm
 
The 1T or 2T is the command rate, a ram timing thingy. Now I don't understand it in any detail that I can remember at the moment, but IIRC it's worth about 15mzh of FSB speed. In other words, if you go to 2T you'll have to get 15mhz more FSB to make up for the decrease in performance that 2T brings. Btw, thats not data I've picked up from benching, rather what others have posted. I just keep mine at 1T. I prefer the performance over bragging rights on FSB speed.
 
lots of people use 2T to run 1 gig of memory at higher HTT's

considering you have pc3200 and probably not the best ocz has to offer, you may hit a wall at 230 for the ram...

have you tried 3-4-4-8 yet?
 
The setting is CPC (Command Per Clock). set as follows: Enable=1T, Disable=2T

I believe the "auto" setting defaults to enabled.

the fsb setting is not really a big concern on atlhlon 64s as the memory controller is on die, however what i found to work best to get both fsb and htt up is to lower the clock multiplier, and up the fsb speed while running 1:1. mine currently runs at 250fsb/250htt.

edit: also, if you're running an SATA drive, use SATA 3 or 4. using 1 or 2 will limit your fsb.
 
After running for a day, the memory got a bit hot and at 225FSB running ram at 1:1, the Ram causes some stability problems. So then I put it to 225FSB with 2T, however benchmarks show poorer performance (as stated). 225 Dram clock at 1T benches better than 225dram clock at 2T, however i'm going to see if it is stable at 225 2T, then maybe try 230 at 2T. Thanks for the input.

CaiNaM, yeah i saw even on the DFI lanparty UT nforce3 review they said to lower the clock multiplier, however can anyone tell me how to do so? I can't seem to find out how to lower the clock multiplier (i know it is locked upwards).

I have a newcastle core with 512kb cache and stock of 200mhz x 11 = 2.2ghz. Is the newcastle core have a locked clock muliplier downwards or something?]

Update: Yeah some reason even with 2T enabled, I still can't get it to run stable at 225mhz. Keeps failling memtest at around 64%.
 
To lower the multiplier, the setting is the CPU/FSB Frequency Ratio. I recommend setting it to 10 and slowly (I'd say in 5MHz increments) increase the FSB Frequency until you figure out what's stable. If you still can't get it stable, and you've tried setting the timings to 3-4-4-8, your RAM probably just won't do any better than what you've got it at. Good luck.
 
Originally posted by: DBoy00
After running for a day, the memory got a bit hot and at 225FSB running ram at 1:1, the Ram causes some stability problems. So then I put it to 225FSB with 2T, however benchmarks show poorer performance (as stated). 225 Dram clock at 1T benches better than 225dram clock at 2T, however i'm going to see if it is stable at 225 2T, then maybe try 230 at 2T. Thanks for the input.
Click to expand...
the thing is double-sided modules (like most 512MB ones) are often difficult to overclock unless you set your memory to a 2T timing. clock for clock, 1T is slightly faster than 2T clock for clock, but in general you're able to clock the memory high enough to offset it (usually about 5-10 fsb frequency).
CaiNaM, yeah i saw even on the DFI lanparty UT nforce3 review they said to lower the clock multiplier, however can anyone tell me how to do so? I can't seem to find out how to lower the clock multiplier (i know it is locked upwards).
Click to expand...
it's in the "Genie BIOS Settings" under "CPU/FSB Frequency Ratio".
I have a newcastle core with 512kb cache and stock of 200mhz x 11 = 2.2ghz. Is the newcastle core have a locked clock muliplier downwards or something?
Click to expand...
no, all a64s are unlocked downwards. the reason is that's how "Kool 'n' Quiet" lowers the frequency when idle to keep power consumption and thermal output down - by lowering the multiplier. not all bios' will support this, but DFI does. you'll also be able to set higher multiplier in the DFI bios, however it will still "clock down" to the highest multiplier your cpu allows (in your case 11) regardless of what the bios states.
Update: Yeah some reason even with 2T enabled, I still can't get it to run stable at 225mhz. Keeps failling memtest at around 64%.
Click to expand...
could be your memory is not up to par. you can also try lowering the dram ratio rather than leaving it at 1:1. what this does is allow you to increase your HTT frequency while keeping you memory at or near it's rated speed.

another thing you can try is upping the dram voltage; 2.8v is usually the upper "safe" limit, tho some ram can handle higher.
 
Yep I can run at 9/10ths ratio but to get the same "maximum memory clock" that the OCZ was stable at, i need to OC the FSB to 245, so then now i found the multiplier option right under my nose. So i'm currently trying to run at 245. I heard that upping FSB is better than upping multiplier. I hope 245x10, will have similar CPU benchmarks as when i was 233x11
 
Is 2.2ghz for my A64 2800+ good? I can't seem to do a whole lot better than that (maybe another 5-10 fsb if i really try) What's a safe voltage to run it at... what's the safe limit?
 
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