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Just oc'd my 3800x2, didnt touch ram timings, should I?

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February 16, 2006 3:04:43 PM

Hi guys, erm, a little advice pls :p 

just overclocked my 3800 x2,

all i did was up the frequency from 200 to 220 on a x10 multiplier, didnt touch the ram, and it seems to be ok, im typing this now, but the main question is as i didnt touch my ram, is my ram causing some sort of bottleneck or what? should i adjust my ram settings? and if so what to, my ram is running at 3-3-8-11 i think, its just cheap kingston value ram, any help would be appreciated, cheers :p 


cheetsy
February 16, 2006 3:23:14 PM

unless you changed the multiplier, you DID touch the ram, putting it at 220 instead of 200 fsb...
February 16, 2006 3:26:23 PM

lol hello again ak, must be just me and you tonight lol, well i set the multiplier to 10x as opposed to auto and set the frequency in the same menu to 220, im a complete noob when it comes to this, the only reason why im worried is that all the other 3800 x2 overclocking posts are with high speed/better ram, and ive only got value ram

cpu z says

CAS -3.0
RAS 2 CAS -3
RAS Precharge -3
Cycle Time (Tras) -8
Bank Cycle Time (Trc) -11
DRAM Idle Timer -16

also my cpu speed/fsb keeps fluctuating by a few mhz every so often, is that normal? doesnt seem to cause any problems, just wondering if its a clean power issue or something
February 16, 2006 3:30:22 PM

By increasing the FSB you have also overclocked your RAM so if you are not having any problems then you should be good. Nice 10% overclock without having to increase any voltage or relax the timings in your RAM.
February 16, 2006 3:32:08 PM

That is a 10% overclock, and not aggressive at all. Virtually any CPU and mem should overclock that, otherwise they would not be stable at stock.
It gets harder to exceed 20% tho.
February 16, 2006 3:33:30 PM

cpu z says

CAS -3.0
RAS 2 CAS -3
RAS Precharge -3
Cycle Time (Tras) -8
Bank Cycle Time (Trc) -11
DRAM Idle Timer -16

also my cpu speed/fsb keeps fluctuating by a few mhz every so often, is that normal? doesnt seem to cause any problems, just wondering if its a clean power issue or something


So i should stick with this and be happy then.... i guess so :D , I can change my sig now hehe
February 16, 2006 3:42:40 PM

fluctuation is normal. put cpu voltage to 1.5 and go to 260 then set the memory divider to 5/6 for a real overclock :D 
February 16, 2006 3:44:24 PM

lol the thought of that actually scares me lol, im tempted to try for 240 but i suppose my ram wouldnt take that unless i reduced the ram frequency to 333? and then played with the timings or somin? there really should be a "for all senarios" guide book lol
February 16, 2006 3:46:10 PM

look ram divider = how fast ram will run in relationship to htt
it can run slower than the HTT. so, for example, 260 htt * 5 divided by 6 = 216 ram speed
understand?
February 16, 2006 3:49:17 PM

lol, right, so, i would set the freq to 260, and the htt to 5x ?
February 16, 2006 4:02:15 PM

No, 260 htt bus, htt multiplier should be a 3x so it doesn't go higher than 1000
February 16, 2006 4:04:31 PM

alright cheers for your help, ill give it a crack! :) 
February 16, 2006 5:41:18 PM

I've been wanting to get my 3800+ X2 over 2.4 for quite some time, but I couldn't find half the settings i needed. I have a Gigabyte GA-K8NS Ultra 939, and appartely if your in the bios, you need to hit ctrl + f1 to get it to show the advanced options. (The new bios f10 also brings timing back into the normal mode.)

Without messing with the ram timings at all, I set cpu clock to 245Mhz, HTT to 4x, CPU / DDR ratio to 2 / 1.33, and upped the cpu voltage to 1.4. Running stable at 2450MHZ right now, did super pi 1MB in 38 seconds. I should note that I'm using a Kingwin AWC-1 liquid cooling unit though, as that might make a difference. Temps are 38C on idle. (Room is prolly 76F though, otherwise temps would prolly be lower.)

So you shouldn't even have to mess with timings to hit 1.4. I'm actually running 2 sticks PNY, 2 sticks Ultra, all pc3200, so I know that value ram will do it.

Going back to see if I can hit 2.5 :) 

Can hit 2.5, but nothing more. (BSOD) Now is prolly when you start playing with timings? Thing is the ram is still underclocked at 188Mhz.
February 17, 2006 12:31:55 AM

the thing im confused about is this ddr ratio thing, what menu is that in? does it have a different name in the bios?
February 17, 2006 1:50:42 AM

Quote:
the thing im confused about is this ddr ratio thing, what menu is that in? does it have a different name in the bios?

Look for something about "CPU to memory" or "HTT to FSB" or FSB:D RAM something of that like. You may have to look on a forum for the specific BIOS you are using.
February 17, 2006 2:17:53 AM

ok will do, thanks ak and bman
February 17, 2006 3:26:19 PM

Thanks for the info ak47! I did a bunch of testing last night and your settings were extactly what would work. I set my fsb to 262, V1.5, HTT3, and booted into windows no problems. It ran 1M super pi in 35 seconds!
February 17, 2006 7:09:06 PM

try to increase the fsb and adjust the mem divider. and is ur comm rate at 1T because the a64 suffers big time with the 2T.
February 18, 2006 12:16:06 AM

funny u have the excact same setup as my friend. and with kingston value ram i took the FSB up to 245 at 2.8V and lowered the CPU multiplier and increased the CPU voltage a bit. And that was with Stock cooling and with minor adjustments in RAM timing. So you should be able to do it no problem. Cmon be adventurous :wink:
February 18, 2006 2:30:45 AM

well i still cant find this dram-fsb ratio thing anywhere in my bios!
February 19, 2006 8:52:30 PM

What is your mobo model? It may not be in there at all, or you may need to do something in order to see it.

EDIT: Found your mobo in your sig. I don't believe that board does it's ram timings that way. At least from what I could see in the manual, your board just uses the "Memclock index value". If go from auto timing mode, to manual, you should be able to set that value. Basically, to see how high your cpu will go, you want to keep your memory around stock speeds, which would mean a value of 200. (200 x 2 = 400 DDR)
February 20, 2006 3:11:07 AM

ahh right, so basically that means i dont touch the ram speed? or i have to work out the ram ratio myself and set it accordingly fsb and ram speed, and if thats the case then whats the math lol.

thanks alot for doing that mate, i really appreciate the effort :)  :)  :)  the manual i got with the board is all in chinese, however when i checked the website the manual on the website seemed to have a different bios, but what your saying sounds correct to me
!