Samsung PC2700 max 230MHz @ By SPD help me please!!!

Csybe · Jul 25, 2002

Hi!

First of all, my configuration:

Abit BD7II (Bios: 9X)
P4 1,6A
2x256Mb Samsung PC2700 DDR SDRAM

I got this system two days ago, and after some "investigation" it became ovibious that my overclocking bottleneck is the RAM. On "By SPD" settings in BIOS, it can go only ~230MHz without errors!!! If I set my RAM timings manually in the BIOS, and change everything to to the highest timing (2.5-3-3-7), it goes better, currently at 310MHz without any errors. Haven't tried more. I've tried to raise the ram voltage to 2.7V, errors decreased, but not disappeared. I've raised VCore as well, but no change. The modules are in dimm0 and dimm1 socket. The error map contains errors from 0-512Mb, so both module behaves so strange (tested with memtest86). Any ideas, guys? My CPU is running @2400 with default voltage, I would like fast RAMs as well...

thanks

Csybe · Jul 25, 2002

something is wrong...

I've tried 320MHz 2.5-2-2-7, no POST, only beeps. Set the voltage to 2.7V: no boot, but a message - BIOS ROM checksum error...

lebe0024 · Jul 25, 2002

Try just one stick at a time, not two. If they perform well individually, then it's a dimm problem. If they perform crappy individually, then RMA the sticks back.

lebe0024 · Jul 25, 2002

Where did you get your ram? Is it "Samsung Original?" and if so, is it the DTL or CTL revision.

mdcomp · Jul 25, 2002

To get rid of the bios check sum error message just correct your bios settings and reboot. That happens clearing of cmos.

Csybe · Jul 25, 2002

A tried the sticks individually, no result. The best they can do now is 160MHz 2.5-6-3-2 @2,7V

I don't know if it's original...where can I check it?

kooshball · Jul 25, 2002

wow, that sucks
im running my 512 true samsung 2700 dtl at 2-5-2-2 at only 145
i tried 3:4 at 190 at the lowest setting and that didn't worked
only at 135fsb 3:4 it would work
all running at 2.7v too
maybe i should have payed 30 moer and gotten the corsair...

koosh

Csybe · Jul 25, 2002

mdcomp said:
To get rid of the bios check sum error message just correct your bios settings and reboot. That happens clearing of cmos.

that is not a problem, I just press reset and hold down the insert key, itt will start at default clock speeds.

Csybe · Jul 25, 2002

I have this on the modules:

K4H280838D-TCB3

http://www.samsungelectronics.com/semiconductors/DRAM/DDR_SDRAM/128M_bit/K4H280838D/

Jerky · Jul 26, 2002

Csybe said:
that is not a problem, I just press reset and hold down the insert key, itt will start at default clock speeds.

does that work with all the abit boards? i guess i could just try, but then again... nah i do enough resetting as it is. :beer:

Khanivore · Jul 26, 2002

Jerky said:
does that work with all the abit boards? i guess i could just try, but then again... nah i do enough resetting as it is.

Seems to be the case. Recently I had a bios rom checksum error on my Abit BG7 and to fix it, I just held down the 'Insert' key upon powering up. It worked great.

KnownKiller · Jul 26, 2002

Thats a DTL stick... Its not samsung original either... just samsung chips on a generic stick.

kooshball · Jul 26, 2002

W00T got fsb running at 144, mem at 3:4 at 192!!
at 2.5-6-3-3 2.7v
kick ***...

koosh

Csybe · Jul 26, 2002

kooshball said:
W00T got fsb running at 144, mem at 3:4 at 192!!
at 2.5-6-3-3 2.7v
kick ***...

koosh

My friend got it at 200MHz 2-5-2-2 @2.7V...
On settings you mentioned it is stable at 220MHz...

RnPgrosz · Jul 26, 2002

Csybe said:
A tried the sticks individually, no result. The best they can do now is 160MHz 2.5-6-3-2 @2,7V

I don't know if it's original...where can I check it?

Even if its not original it should be able to do much higher than that. After all PC2700 is rated at 166, not 160 with stock timings. Return the stick, you probably just got a bad one. In SiSoft sandra it may say if it is CTL or DTL(CTL=good, DTL=bad).

kooshball · Jul 26, 2002

----------------
My friend got it at 200MHz 2-5-2-2 @2.7V...
On settings you mentioned it is stable at 220MHz...
---------------

wow, nice!!
is this DTL or original CTL?

koosh

Csybe · Jul 26, 2002

kooshball said:
----------------
My friend got it at 200MHz 2-5-2-2 @2.7V...
On settings you mentioned it is stable at 220MHz...
---------------

wow, nice!!
is this DTL or original CTL?

koosh

Don't know I'll ask him.

I wish mine could only 160 2-5-2-2

kooshball · Jul 26, 2002

i would say higher mem at higher cas would be more efficient then low mem and low cas.
try to lower the fsb and use 3:4 at 2.5-6-3-3
good luck

koosh

Samsung PC2700 max 230MHz @ By SPD help me please!!!

Csybe

Member

Csybe

Member

lebe0024

Member

lebe0024

Member

mdcomp

Classic Administrator

Csybe

Member

kooshball

Member

Csybe

Member

Csybe

Member

Jerky

Member

Khanivore

Registered

KnownKiller

Member

kooshball

Member

Csybe

Member

RnPgrosz

Member

kooshball

Member

Csybe

Member

kooshball

Member

Similar threads