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A8N32-SLI Deluxe & TWINX1024-4400 best settings?


xxxomxxx

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Hi

 

i have a A8N32-SLI Deluxe Motherboard and 1 Pair of TwinX1024-4400 and 1 Pair of TwinX1024-4400C25

 

i accidently bought the C25 version on the second GB of Ram, though i hope it will run at the same Timings as the normal 4400 will.

 

i have tried several settings, but the system (WinXP) gets unstable if i set the memory to 250mhz..

 

i have a AMD FX-60 clocked @ 2600. The whole System is watercooled, so i can overclock here and there without any problems. Just finding the right settings with so many options is really hard.

 

my problem is, that i can not set the Memory Clock to 275. The A8N32-SLI Deluxe lets me choose from the settings i will list below. What will the best settings be for me? The "@" shows the currently set values as far is i know them

 

____________________________________________

 

Clock: 200,216,233,250 currently running @ 200

Cas: 2,3,1.5,2.5 @2.5

TRAS: 5-12 @8

TRP:2-6 @4

TRCD:2-6 @4

TRRD: 2T-7T @ 2T

TRC: 7T-14T @ 11T

TRFC 9T-16T @ 14T

TRWT: 1-6clk @4clk

 

TREF:3.9,7.8,15.6us

TWCL: 1,2

R/W Queue Bybass: 2,4,8,16

Bypass Max: 0-7

Idle Cycle Limit: 0,4,8,16...256

Dynamic Idle Cycle Center: on/off

DDR Driving Strength: Normal/weak

32 Byte Granularity: on/off

TWR: 2,3clk

DDR Input Strobe Skew: on/off

DDR Data Driving Strength: on /off

 

Read Preamble: 2-6ns @ 5.5ns

Async latency: 4-11ns @ 7ns

Bank Interleaving: Auto/Off @auto

Burst Length: 4,8 @4

Hardware Memory Hole: on/off @off

L2 BG Scrub: off, 40-655us @off

Data Cache BG Scrub: off,40-655us @off

 

MTRR Mapping: continuous/ discrete @continuous

1T/2T Memory Timing: 1T,2T @ 2T (since the Memory Modules are not the same i think this is the better value for this option)

 

____________________________________________

 

 

thanks for any help

 

Cobra

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  • Corsair Employees

I would not suggest mixing these two modules as they may not ever be stable in the same system. And AMD suggested using only matched modules with this platform. But you can try and set the timings and frequency manually to Cas 3-3-3-8 at DDR400 at 2.8 Volts and see if it's stable

Please load setup defaults and then set these settings:

DDR Voltage 2.8 Volts

Clock: 200

Cas: 3

TRAS: 8

TRP: 3

TRCD:3

 

Bank Interleaving: Auto/Off @auto

Burst Length: 4,8 @4

Any setting not listed dhould be set to Bios default, then test the system with http://www.memtest.org And if you want to over clock I would set the TRP and TRCD to 4. and lower your HTT Freq to 3 or 4.

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which RAM modules would get the most out of my System since i might have to change them since they really are for a intel rig and not an amd rig, correct?

 

i am suprised that under the system configurator you list the 4400 modules as the best for overclocking, although the A8N32-SLI-Deluxe can never reach 550mhz because of my problem listed above...

 

oh...and could you ask your lab guys how the managed to achieve the results in

 

http://memtest.corsairmemory.com/print_report.aspx?model=Asus++A8N32-SLI+Deluxe&pn=TWINX1024-4400C25PT&id=5071

 

since as i said... the Motherboard only goes to 250 and not 275mhz as Memory FSB or is there a unlock feature?

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