Hello there!

I have recently bought some 512 MB SDRAM sticks, using 8x Samsung
K4S511632C-TC60 modules. The modules were labled PC166 (of course not
officially, but using 6ns RAM from Samsung).

Trouble is, none of the 10 modules wants to work in any motherboard I
tried em in, 2x i845 chipsets (1x Asus P4B, 1x some other), 2x KT133A
(1xAbit KT7A 1.0, 1xMSI KT7 Turbo 2). This led me to believe that the
modules are fishy, but there seems to be another possible explanation
for this: the KT-133A seems to accept only 256Mbit density modules,
which the i845 should, however.

Is there a logical explanation for those modules not working (and if
there is, can anyone guess at a motherboard capable of running these
modules)?

Cheers,

Bernhard

On 23 Nov 2005 07:53:18 -0800, "Bernhard Hortens"
<(E-Mail Removed)> wrote:

>Hello there!
>
>I have recently bought some 512 MB SDRAM sticks, using 8x Samsung
>K4S511632C-TC60 modules. The modules were labled PC166 (of course not
>officially, but using 6ns RAM from Samsung).
>
>Trouble is, none of the 10 modules wants to work in any motherboard I
>tried em in, 2x i845 chipsets (1x Asus P4B, 1x some other), 2x KT133A
>(1xAbit KT7A 1.0, 1xMSI KT7 Turbo 2). This led me to believe that the
>modules are fishy, but there seems to be another possible explanation
>for this: the KT-133A seems to accept only 256Mbit density modules,
>which the i845 should, however.

Yep, acording to the datasheet the KT133A does 256Mb, no mention of 512Mb
DRAMs.

>Is there a logical explanation for those modules not working (and if
>there is, can anyone guess at a motherboard capable of running these
>modules)?

What speed/latencies are you trying to run them at in a i845 system? Will
they not run at 133MHz? Have you tried setting timings manually - wouldn't
be the first time a SPD was bad.

--
Rgds, George Macdonald

Hello George,

> What speed/latencies are you trying to run them at in a i845 system? Will
> they not run at 133MHz? Have you tried setting timings manually - wouldn't
> be the first time a SPD was bad.

I tried running them at 100/133 MHz, setting speeds manually. At 166
MHz memory speed (125 MHz FSB), my P4 1.7 GHz with stock cooling does
not boot, unfortunately. However, the modules should boot with 133 MHz
anyway, shouldn't they?

Cheers,

Bernhard

On 24 Nov 2005 04:41:34 -0800, "Bernhard Hortens"
<(E-Mail Removed)> wrote:

>Hello George,
>
>> What speed/latencies are you trying to run them at in a i845 system? Will
>> they not run at 133MHz? Have you tried setting timings manually - wouldn't
>> be the first time a SPD was bad.
>
>I tried running them at 100/133 MHz, setting speeds manually. At 166
>MHz memory speed (125 MHz FSB), my P4 1.7 GHz with stock cooling does
>not boot, unfortunately. However, the modules should boot with 133 MHz
>anyway, shouldn't they?

Ah so you're overclocking the FSB. I've no idea what FSB/memclock ratios
the i845 supports but in general running memclock faster than FSB is not
something I'd bother even trying - benefits are minimal and problems are
common. If the memory works when in lock-step with FSB, leave it at that
is my advice.

--
Rgds, George Macdonald

Unfortunately the memory does not run at 100 MHz FSB / 100 MHz Memory
either. With my current memory I run it at 100/133. The seller claims
the memory only works at 166 MHz, but I can't see how that would make
sense.

OTOH I am willing to try it out with other combos if I can get my
fingers on them, which boards/chipsets should theoretically run 512MBit
memory (SDR SDRAM)?

Cheers,

Bernhard

On 25 Nov 2005 13:08:38 -0800, "Bernhard Hortens"
<(E-Mail Removed)> wrote:

>Unfortunately the memory does not run at 100 MHz FSB / 100 MHz Memory
>either. With my current memory I run it at 100/133. The seller claims
>the memory only works at 166 MHz, but I can't see how that would make
>sense.

It doesn't make sense at all unless maybe the SPD is screwed up in some
way.

>OTOH I am willing to try it out with other combos if I can get my
>fingers on them, which boards/chipsets should theoretically run 512MBit
>memory (SDR SDRAM)?

IIRC Intel skipped 166MHz FSB/memclock for desktop systems and most systems
which allow 166MHz FSB are DDR-SDRAM anyway.

--
Rgds, George Macdonald

Unfortunately, they run at no speed, neither 100/133 (with 100 MHz
FSB).

Is there any board/chipset other than the i845 you could recommend for
trying them out?

Hello Berhard
did you solve the problem with the rams

I have the same problem witch this type of chips!
:crybaby:
th