A-Data DDR600 on DFI875P-T, cant go past 270 Fsb.

Hey Xs.
This is my first Thread here after About 3 months of browsing and :clap: ´Ing


I’m having ALOT of difficulties getting past 270 Fsb.
It took me about 100 Hours of mem testing and a lot of frustrating nights before I was able to go past 268 Fsb. Finally I discovered that SP2 fixed the issues of my net card and sis soft Sandra.

So went on in my efforts to reach 300 Fsb.
Then I found out my A-data DDR600 doesn’t like lose/high timings. Only took me about 50 hours before I discovered that :fact:
.
Then I went on and found that I have to give 1.8 Vagp before my rig is 200 % stable. Bloody DFI :p: But I’m told that is because Vagp controls the chipset Volt as well

Now I have 0 errors I Memtester 1.55+ after 8 loops at 270 Fsb 2½-4-3-6 But When I tried 275 Fsb I get stuck. Tried everything, and I know its not my Cpu because I have done 32 M Super Pi at 277 Fsb 5:4 and 1 M at 290 Fsb 5:4.

Now I just give up, seriously need some help from other Intel plat formers. I hope this is enough information for You out there.

Well it's the limit of your board. I have the same problem. I cannot pass 270-272FSB. Some people are able to run 275-278 but I cannot. I think better cooling on the NB helps a little. There are some people on this forum that were thinking about doing a VAGP mod, but I don't know if anyone has actually done it yet.

I just dont belive that I have to mod the motherboard. It simply cant be true....

I have Whater coling on the Nbrighe so that isent the problem.

It hast to be a 1:1 fsb:ram problem or a immings problem. I belive Its timmings.

EDIT : Im turning of for today, have to use my 17" TFT for moviZ :p

My girl needs some attention after all the time I speend infront of the computer :slap:

But she VERY supportive so I have TONS of time tomorrow after "Work" :D

How stable are you at 290 5/4 and what cpu voltage? My rig is almost stable at 290 5/4 but I lose my key board support after about an hour.I have the same wall at 277 1/1 as most guys.

Do you have CPC Addr/control disabled?

No I have CPC Addr/Control on Auto.

Alle the mem specifikations in the bottom of Advansed Chipset Features are on Auto.

I just ram som memtesting.

UPDATE :
I have decidet to make a Exel list over memtester.

I will update it as I geet fourther.

Updated some more.

I knew I should have bougth gskill ram :(

You probably need to try Vagp at 1.95V to go higher but i'm also on the same boat as you with TCCD ram on an 875P mb. They just don't play good together. :fact:

Then why claim it is DDR600 if it isen posibel to acheave with a 875 chipset.

That means I should have keep my old A-Data pc 4000.

Typing with one han as I fried the rigth one cooking :(

Quote:

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Originally Posted by Nosfer@tu

Then why claim it is DDR600 if it isen posibel to acheave with a 875 chipset.

That means I should have keep my old A-Data pc 4000.

Typing with one han as I fried the rigth one cooking :(

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Might just be the chipset limitation......I've had my tccd ram at 262Mhz Cas2.5-3-3 memtest86+ error free for as many hours yours with no luck in stability within windows. I've also tried 1.95Vagp to 2V. It just doesnt make any difference.

A-Data have contacted DFI and are preparing a Test with the DFI 875P-T and their A-Data Pc4800.

They will report back ASAP. :D

I’m having ALOT of difficulties getting past 270 Fsb.
It took me about 100 Hours of mem testing and a lot of frustrating nights before I was able to go past 268 Fsb. Finally I discovered that SP2 fixed the issues of my net card and sis soft Sandra.

i have 2x512 mb tccd adata ddr566 and i have same problem i can do super pii@280 but 3dmark @270 , i have tested all timmings but anything :(

A-Data Just send come Pc 4800 Ram to DFI. They expect a test result Thursday tw time

Dear Peter,

I was just informed by DFI that the motherboard you have can't run at FSB300. If you have further question, please contact the DFI service people. Thanks.
And DFI was only abel to reach 250 fsb. What a waste of time buying DFI.

from what i have read about that ram its rated to run @ 300mhz on a single modules.. i u have a pair mostlikelly u got them separately, not as a tested kit.. so when run in pairs it wont reach 300mhz in fact 270 is normal 280 is very good on A-DATA ram.

Im 200 % sure its not the ram. The mobo is where everything fails.

I was abel to reach 285 24/7 stabel with my old A-Data Pc4000.
So Im Quite sure the ram can run as specified, alsow a hardware site I juse to work for had them running 298 Fsb.

Just the mobo that sucks

Yes it's the board. :mad: I can only hit around 280 stable on this board with G.Skill LE, but AS8 does 290+ w/no mods.

Im surly going for the Asus P5WD2 Premium when it hits denmark next week.

Dont thing Ill invest my money in DFI stuff anymore

I can also say/confirm it is the motherboard.. I have the same ram. I'm sorry about your troubling experience :(

Only temperature limited, I'm shure the ram can do more:
http://img.photobucket.com/albums/v2...stein/4200.png