Twinmos PC3200 and 8RDA+

[Epox Maniac]

Does anyone know which stick of Twinmos PC3200 w/Twinmos chips works better - 50B or 50D?
What is the diference in reaching high FSB and mem timings?

Now I have 50B sticks and have a chance to switch them for 50D sticks. Is it worth it?

[Epox Maniac]

Anyone?

[Jay T]

I only know that the ones with Winbond chips are the ones to have. At a guess I'd say the D revision would be better, but I have no idea.

Sorry, this probably wasn't much help

[FoP]

I'm running a similar set-up but I just checked and mine are also the 50B. Not much help, sorry.

[Swifty2002]

I have 2x256MB sticks of 50D which do up to 217mhz FSB DC...

my new 512MB stick of Twinmos with Winbond chips only does 208mhz FSB at the moment... They require a bit of burning in because my Twinmos sticks wouldn't do 200mhz before I burned them in...

[Lord Vetinari]

My twinmos 256mb 50D sticks will run at around 210mhz at 5,3,2,2 @2.64V- haven't tried higher because of VDD probs

[Epox Maniac]

I did some testing with mem/FSB async with my Twinmos sticks in DC.
When I put memory to 125% of FSB, memory goes to 225 Mhz, with FSB at 180Mhz.
When I put memory to 80%, my FSB goes up to 220 (mem at 176).

So , I concluded that my memory can do 225 FSB, and my 8RDA+ can do 220FSB.
Therefore, why can I reach only 202 FSB stable when running in sync (100% FSB/MEM ratio)?

[Swifty2002]

Originally posted by Epox Maniac
I did some testing with mem/FSB async with my Twinmos sticks in DC.
When I put memory to 125% of FSB, memory goes to 225 Mhz, with FSB at 180Mhz.
When I put memory to 80%, my FSB goes up to 220 (mem at 176).

So , I concluded that my memory can do 225 FSB, and my 8RDA+ can do 220FSB.
Therefore, why can I reach only 202 FSB stable when running in sync (100% FSB/MEM ratio)?

Because in sync it is stressing your NB and SB harder than a-sync... Your motherboard may not be able to handle all the way up to 220+ FSB so it begins to crap out at 202 FSB...

I know my motherboard can handle up to 217mhz FSB DC with 1.74v VDD... with default VDD it can only do 203mhz FSB DC or so without flickering...

[Fr0sT]

Originally posted by Swifty2002
I have 2x256MB sticks of 50D which do up to 217mhz FSB DC...

my new 512MB stick of Twinmos with Winbond chips only does 208mhz FSB at the moment... They require a bit of burning in because my Twinmos sticks wouldn't do 200mhz before I burned them in...

Burn them in ???
Can you explain what that means because my Twinmos Winbond RAM can hardly do 202 MHz and I have tried Twinmos with M-Tec chips (333MHz) and I reached 207 sync ???

[jimbobaggies]

Unfortunately I have std 2x256Mb TwinMossPC3200.
I can set them as low as 3-3-3-2.0, hit the 2's with the RAS and that, I get sirens everytime!
Scored best in 3Dmarks as in my sinature below!

[Swifty2002]

Originally posted by Fr0sT



Burn them in ???
Can you explain what that means because my Twinmos Winbond RAM can hardly do 202 MHz and I have tried Twinmos with M-Tec chips (333MHz) and I reached 207 sync ???

Yeah... burn them it using MemTest86 test#5 at your current highest speed and timings... use 2.9v and let them go overnight or longer if possible...

Then boot into windows and test that they run Prime95 for a while and 3Dmark2001 then go back to Memtest86 test#5 and burn them in at 5mhz higher... repeat till you reach your max...

[Fr0sT]

Originally posted by Swifty2002


Yeah... burn them it using MemTest86 test#5 at your current highest speed and timings... use 2.9v and let them go overnight or longer if possible...

Then boot into windows and test that they run Prime95 for a while and 3Dmark2001 then go back to Memtest86 test#5 and burn them in at 5mhz higher... repeat till you reach your max...

Hm thanx Swifty2002 I'll try that