Thinkpads Forum

Hi,

I installed the P9700 1066 FSB in the T61p with the hardware mod (BSEL).

Boot fine but I get a failed Prime95 result after 10-20 seconds (hardware failure message round error should be less than 0.4)

I've flashed my RAM SPD (running at 354 mhz now ...normal???)

I'm using the samsung 2x2gb DDR-800 M470T5663QZ3-CF7 modules.


Any clues?

After further reading it say that the 3:4 divider for RAM is unstable.

I have the nvidia board.

My samsung now run at 443 mhz and stable ... no error on prime95... why???

Funny fact it's overclocked now by 43 mhz and not giving errors...

Try a few memtest86+ passes (multithreaded) to make sure the RAM is stable).

axur-delmeria wrote:Try a few memtest86+ passes (multithreaded) to make sure the RAM is stable).

Yeah thanks...

Any clue why a lower mem freq is unstable and higher overclocked one is stable?

Isn't suposed to be the opposite?

ELCouz wrote:

axur-delmeria wrote:Try a few memtest86+ passes (multithreaded) to make sure the RAM is stable).

Yeah thanks...

Any clue why a lower mem freq is unstable and higher overclocked one is stable?

Isn't suposed to be the opposite?

If you have used thaiphoon burner, the latency under 533Mhz is CL4 normally, which means you will be getting 711Mhz@CL4 overclocked.
And the latency under 667Mhz is CL5 on default, you will be getting 888Mhz @CL5 when overclocked.

Some RAMs are less capable of running at lower latency rather than at higher frequency. I have one like this, capable of running 888Mhz @ CL6 but not 711Mhz@CL5 :/ But only one

RMSMajestic wrote:
If you have used thaiphoon burner, the latency under 533Mhz is CL4 normally, which means you will be getting 711Mhz@CL4 overclocked.
And the latency under 667Mhz is CL5 on default, you will be getting 888Mhz @CL5 when overclocked.

Some RAMs are less capable of running at lower latency rather than at higher frequency. I have one like this, capable of running 888Mhz @ CL6 but not 711Mhz@CL5 :/ But only one

Finally throwed my Samsung DDR2-800 so-dimms in the bin...

My DDR2-533 sticks runs fine at 354 mhz.

Did 7 hours of Prime95 (blend) and 2 hours of memtestx86+

So far so good!