DDR400 not running at 200MHz!!! [Archive]

knife4myneighbr

08-02-2006, 10:00 PM

hey guys, i just upgraded my RAM to KINGSTON DDR400 PC3200 and am trying to figure out how to get it to run at the max MHz or frequencey. i dont know much about RAM or ratios or anything. i went into my bios and messed around but didnt achieve much. any help would be greatly appreciated. here are some screens of CPU-Z tests. PLEASE HELP!
http://img239.imageshack.us/img239/326/cpuzcpuqd2.png
http://img89.imageshack.us/img89/1893/cpuzmemev5.png
http://img228.imageshack.us/img228/3664/cpuzspdgg5.png

knife4myneighbr

08-02-2006, 10:01 PM

i just overclocked my cpu a bit from 2.53 to 2.7 and now my FSB is at 569 instead of 533 and also my ram is running at 177.9MHz instead of 166.7 so it increased a little. is there no other way to get my DDR400 to actualy run at 200MHz? heres the new screens.

http://img191.imageshack.us/img191/6962/cpuzcpuafterocdv3.png
http://img309.imageshack.us/img309/6013/cpuzmemafteroclh4.png

POGE

08-02-2006, 10:06 PM

Your running your memory on a divider. Set it 1:1 in your bios.

HookeyStreet

08-02-2006, 10:06 PM

How many sticks of RAM do you have installed? If its 4 your RAM has unclocked itself to DDR333 speeds for stability (this is a common problem when using 4x sticks of RAM) You will find you RAM is probably running @ 2T also.

knife4myneighbr

08-02-2006, 10:11 PM

yeah, someone suggested that already in another forum.

they wrote: "Go into your BIOS ram settings and set it at 200mhz or 1:1. Right now it is on a 5:6 166mhz divider. Look around and see if there is any type of throtteling options that you can disable."

i replied: "i looked for throtteling options, didnt see any. i also set the ratio 1:1. my choices in bios were:
3:4
4:4
4:5
3:2
5:4
6:6
5:5
so i just chose one that was equal to a 1:1 ratio like 4:4. that actually decreased the MHz my memory was running at, so i changed it back to the default 4:5. i don't know why there are two 1:1 ratios; 4:4 and 5:5. weird."

knife4myneighbr

08-02-2006, 10:14 PM

oh no, im only using 2x512 sticks of Kingston DDR400 PC3200, exactly the same sticks so i could enable dual channeling. dual channeling is working, they just aren't running at the right MHz. when i increased my FSB, the ram MHz increased too. is overclocking my CPU the only way to get my RAM to run at its max???

08-02-2006, 10:26 PM

and 6:6, does any of those solves the problem?

knife4myneighbr

08-02-2006, 10:27 PM

i'll try all of them.

knife4myneighbr

08-02-2006, 10:42 PM

well just tried all of them, and realized that CPU-Z was showing tat the FSB:DRAM Ratio was 4:5 everytime. even when i set it to 6:6 or 5:5 or any of those 1:1 ratios it still says 4:5. why is it locked in 4:5?

08-02-2006, 10:51 PM

maybe your board can't work with 1gb of memory at ddr400

Alec§taar

08-02-2006, 10:51 PM

See my subject-line/title above for my post here, & then this URL from the forums here:

http://forums.techpowerup.com/showthread.php?t=14546

:)

It's LONG, & detailed, but has the "best minds" for this here working on an overclock I went thru, & especially @ the levels YOU are concerned about:

RAM-mhz yield return when you use a divider!

How to get the MOST out of it, what tools to use to prototype timings & the whole 9 yards (including the tradeoffs & thinking involved + the mechanics of it all).

The guys here in Ketxxx, Tatty One, & POGE... they got me another 180mhz on the CPU over what I could do, & damn near perfect efficiency on RAM-mhz rate as well (this part I found via FSB increase & 11x multipliers after Tatty One suggested I try it (edit part - giving credit where it is due & all that))...

I am STILL going @ it, trying 12x multipliers (higher CPU-mhz results, but not QUITE as efficient RAM-mhz yield).

* You can learn a LOT from that thread, imo @ least - I can assure you one thing:

I did!

APK

knife4myneighbr

08-02-2006, 11:13 PM

well i appreciate that thread and all but the problem is i know nothing about ram timings and all those technical little aspects. all i know is that my ram is DDR400 and isnt running at DDR400. i read through the thread though, im gonna try dlling that tweaker program.

knife4myneighbr

08-02-2006, 11:15 PM

oh nvm, that tweaker if for AMD CPUs. i have an Intel P4.

Alec§taar

08-02-2006, 11:22 PM

well i appreciate that thread and all but the problem is i know nothing about ram timings and all those technical little aspects

Neither did I, especially on the RAM loosen/tighten timings cycle... NOW, I definitely do, & it's because of that thread & guys like Ketxxx & POGE, mostly!

all i know is that my ram is DDR400 and isnt running at DDR400. i read through the thread though, im gonna try dlling that tweaker program.

Yup, it's (per your post after this) for AMD stuff, that "A64 Tweaker"...

:(

* You might want to find an "analogous" program for Intel rigs!

APK

P.S.=> Those "little details" you don't know? Read Ketxxx & POGE's replies to me, they go WAY into how that all works, rules of thumbs to use/start with, & tools to use as well... It's ALL principles really, & Ketxxx + POGE really "stressed" that w/ me there... apk

knife4myneighbr

08-03-2006, 12:20 AM

thnx man, i'll read through it.

knife4myneighbr

08-03-2006, 08:21 PM

well i read through it again, didnt help much. thnx tho, its the thought that counts. i think it might have something to do with my bus speed being only 533MHz and FSB running at 133MHz only. I overclocked my FSB to 142 and now my ram is running at 177MHz instead of 166. when i set my FSB/DRAM ratio to 1:1 it actually lowers the frequency my RAM runs at so i guess i'll just leave it at 4:5.

knife4myneighbr

08-03-2006, 08:23 PM

Can Anyone Help Me?!?!?

Sasqui

08-03-2006, 08:53 PM

So it seems like your situation is this:

1. You are running your FSB at 142
2. The only divider that "sticks" is 4:5, so your memory runs at 142*5/4 ~ 177 Mhz

Now based on the dividers you listed previously, the 3:4 divider should get you the highest speed. 142*4/3 = 189. Still not 200, but the your options just arent' there from what you wrote.

If you can get the 3:4 divider to work, that's likely the best you can do. If you had a CPU that ran at 200 FSB, you'd be golden (assuming your board supports that).

It sounds like your board is built for DDR 266, not DDR400, or just assumes you are using DDR266 when using a 533Mhz based CPU (133*4). Or they'd have a 2:3 or 1:2 set of dividers!!!

Dividers are confusing - I wish they'd call a spade a spade...

knife4myneighbr

08-03-2006, 11:47 PM

YES! you are correct sir! and about the 3:4 divider, it wont stick for some reason. i dont get it, the only 2 that will are the 4:5 and the 4:4, even the 5:5 and 6:6 wont work but the 4:4 will. i dont get that. any tips on how to get the 3:4 to stick anyone?

b1lk1

08-04-2006, 12:14 AM

Because your Front Side Bus on your CPU is 533 so it will run your ram @ PC2700 (166MHz). There is almost certainly no setting to run it @ 200MHz with your CPU. You would need a CPU with a 800MHz FSB to run the ram @ 200MHz. There is nothing wrong, this is just the limitations of your hardware. The whole reason these other dividers won't work is because of this limitation. You are stuck working with the ones that stick.

Dippyskoodlez

08-04-2006, 02:08 AM

Make sure its not set to SPD timings. That may be causing the bios to automatically revert to the "safe" setting.

knife4myneighbr

08-04-2006, 02:39 AM

THANK YOU!!!!! thats all i needed to know. thnx to everyone who tried to help, i really appreciate it. i guess overclocking is my only option until i have enough money(never) to build a beautiful new rig. thnx again.

cdawall

08-04-2006, 11:35 PM

hey wait the intel p4 can run at ddr 400 b/c a celeron d 351 (i have on that should be proof enough) can and it has 533 bus and on a cheap ecs board it still does ddr400 that is the whole point of the 533 bus why your particular set up doesnt work is prob just a mobo issue i also have a pentium d 930 on the gigabyte version on your board and it works w/ the 533 bus and ddr 400 (tested w/ the celeron 351 in it) i dont know why your particulair board may just not support a gig of ddr 400 at 400mhz if it really bothers you set your timings to bring your speed about equal to normal ddr400

Dippyskoodlez

08-04-2006, 11:37 PM

hey wait the intel p4 can run at ddr 400 b/c a celeron d 351 (i have on that should be proof enough) can and it has 533 bus and on a cheap ecs board it still does ddr400 that is the whole point of the 533 bus why your particular set up doesnt work is prob just a mobo issue i also have a pentium d 930 on the gigabyte version on your board and it works w/ the 533 bus and ddr 400 (tested w/ the celeron 351 in it) i dont know why your particulair board may just not support a gig of ddr 400 at 400mhz

yes, from the sound of his last post he fixed it ;)

But yeah 1:1 will give you slower ram, but it is very much possible to run ram faster than your fsb.. this is most likely a very beneficial way if you can do it.

knife4myneighbr

08-10-2006, 01:52 AM

but my manual says my motherboard supports up to 4gigs of DDR400. WTF!?! oh, and i don't mess with the timings cuz i dont understand that stuff. don't know what im doing with the timings. i've checked my bios over and over and there are no settings that i can see that are holding me back. i dont know whats wrong.

cdawall

08-10-2006, 05:15 PM

it may support 4gig of ddr 400 but does it support 4gb at ddr400 speed :) it is intel based so read between the lines ;)

Sasqui

08-10-2006, 07:16 PM

it may support 4gig of ddr 400 but does it support 4gb at ddr400 speed :) it is intel based so read between the lines ;)

What the hell are you talking about? It's a divider issue, not a size issue.

Ketxxx

08-10-2006, 07:24 PM

Sasqui

08-10-2006, 08:54 PM

from what i hear some intel boards at least have a ram multiplier which lets your ram run at its rated speed. not sure what it would be listed as so just poe around in your bios for anything thats seems retlated, could even simply be listed as "ram multiplier" in your bios.

We covered that gound earlier in the thread, the best he can get is 3:4 or something like that, but it won't stick in the bios. OT - are you really a Mushkin Rep?

Ketxxx

08-10-2006, 11:20 PM

yes.

and i meant an actual multiplier not divider. has the same effect as a cpu multi only its used to increase ram speed.

knife4myneighbr

08-10-2006, 11:31 PM

theres nothing like that in my bios :confused:

cdawall

08-11-2006, 05:46 PM

kick it that will make it better :roll: but really no idea why i doesnt run at 400 maybe you should email FIC and ask

Sasqui

08-11-2006, 06:54 PM

yes.

and i meant an actual multiplier not divider. has the same effect as a cpu multi only its used to increase ram speed.

Yes, I think we mean the same thing, his bios has FSB:MEM speed options. 3:4 is the highest one he sees, but when he selects and reboots, it drops back to a lower one, 1:1 (I think.).

OT again - any reccomendations on memory for an intel 975x board? I should probably start a separate thread. :rolleyes:

DanTheBanjoman

08-12-2006, 02:57 PM

you need a 2:3 divider to get to 200MHz since your CPU runs at 133. Seeing your options I'd go for 4:5 with a 160MHZ FSB.

knife4myneighbr

08-15-2006, 09:30 AM

yeah i figured it was my fsb that was holding me back. i just returned that shitty ram anyway, found a way better deal on some kickass crucial ddr400 on newegg. man i love that site.

TripTop

08-16-2006, 01:02 PM

Sasqui

08-16-2006, 02:23 PM

Hi, its a fsb and 400mhz mem thing is a bit unclear for me.

I have 3 256mb pc3200 ddr's and i want to run them all on 200 mhz.
Can i just put my fsb on 200 mhz and fsb:mem to 1:1, my cpu multiplier to 7x?
The thing is i have a athlon xp 1700 that currently runs on 133mhz with default multiplier of 11 (cpu is supposed to run at around 1467Mhz) , my mem runs at 200mhz. Think i have fsb:mem on by spd or auto at the moment. With these settings when i boot up i get as cpu identity xp 1700. I tried fsb on 200 and multiplier on 7 but then my cpu identifies as xp 1400.
My question is can i do this without damaging cpu and system?

You hit the nail on the head, finding a balance between the CPU and memory dividers to optimize your system. That's exactly what the CPU divier flexibility is there for. Now I'm confused about your FSB and multipliers:

Stock: FSB = 133, Multi = 11 : Core CPU = 133*11 = 1463
Clocked FSB = 200 Multi = 7 : Core CPU = 200*7 = 1400

Is the Bios reflecting those speeds? It may key the model off the multipler you are using to "assume" the CPU model. I'm assuming an XP 1400 runs at 133 with a multiplier of 7...

If your system is running fine, try getting the CPU above 1400 and memory above 200 by raising the FSB.

cdawall

08-16-2006, 11:25 PM

just try 210mhz and that should be fine both w/ the ram and speed (only 7mhz over stock) but it may still identify it as a 1400 b/c the multiplier is set to 7

knife4myneighbr

08-17-2006, 01:07 AM

see thats my problem with my intelP4, the multiplier is locked in my bios. damnit!

TripTop

08-17-2006, 02:53 PM

Ah ok so the XP 1700 runs default on a 133Mhz fsb with default cpu multiplier of 11 and i could put the fsb to 210 with multiplier of 7 to get cpu running on 1470 Mhz instead of 1463 Mhz.
When i tried with 200 fsb and multiplier 7 i kinda got annoyed looking at the bios identifying muy cpu as a XP 1400 instead of xp 1700. So in my stupidity i tried 8x multiplier which worked as it identified cpu as xp 1600. Then i went from stupid to retarted and tried 8.5 eheh. Well after that pc didnt boot. But now i got it to work again and cpu/mem is working without any problems.

After setting fsb to 210 and multiplier to 7 what tests should i do to check if everything is ok?
Memtest at boot? Any others?

Thanks for the replys

Grt TripTop

cdawall

08-17-2006, 11:26 PM

run sciencemark 2.0 it is a really good mem/cpu intensive test then post your score in the other thread http://forums.techpowerup.com/showthread.php?t=14736&page=79 personaly (this may just be me) but i do not like running cpu burn-in tests but if thats your flavor be my guest (if you run it it WILL shorten the life of your cpu/mobo and a do NOT recommend it in any way shepe or form) i know this stuff b/c were i work the xerox printers we use run certain process' that run the intel cpu/mobo's @100% usage all day and it fries the wires around the cpu on the mobo!!!