memory timings help please!

[Musaki]

Hi there,

I recently built a new shuttle pc using the SN68PTG5 and need some help setting my memory. I got Corsair 2GB DDR2 XMS2-6400C5 TwinX thats meant to be set at 5-5-5-12-T1 at 1.9v. However it didn t default to this so i need to know what options to set. This is what it looks in the bios.

Timing Mode
Ø The Choice: Auto or MaxMemClk.

Memory Clock value or Limi
Setting platform Memclock.
DDR800

DDRII Timing Item
Enabled

TwTr Command Delay
Ø The Choice: 1~3 bus clocks. Set at 3

Trfc0 for DIMM0
Ø The Choice: 75ns, 105ns, 127.5ns, 195ns, or 327.5ns. Set at 75

Trfc1 for DIMM1
Ø The Choice: 75ns, 105ns, 127.5ns, 195ns, or 327.5ns. Set at 75

(Twr) Write Recovery Time
Ø The Choice: 3~6 bus clocks. Set at 6

(Trtp) Precharge Time
Ø The Choice: 2~3 clocks. Set at 3

(Trc) Row Cycle Time
Ø The Choice: 11~26 bus clocks. Set at 26

(Trcd)RAS to CAS R/W Delay
Ø The Choice: 3~6 clocks. Set at 6

(Trrd)RAS to RAS Delay
Ø The Choice: 2~5 clocks. Set at 5

(Trp)Row Precharge Time
Ø The Choice: 3~6 clocks. Set at 6

(Tras)Minimum RAS Active Time
Ø The Choice: 5~18 bus clocks. Set at 18

I have no idea what to change to make it run faster also the voltage is at default which is lower than 1.9.

Please tell me what to change

Thanks

[Yellowbeard]

Originally Posted by Musaki

Hi there,

I recently built a new shuttle pc using the SN68PTG5 and need some help setting my memory. I got Corsair 2GB DDR2 XMS2-6400C5 TwinX thats meant to be set at 5-5-5-12-T1 at 1.9v. However it didn t default to this so i need to know what options to set. This is what it looks in the bios.

Timing Mode
Ø The Choice: Auto or MaxMemClk.

Memory Clock value or Limi
Setting platform Memclock.
DDR800

DDRII Timing Item
Enabled

TwTr Command Delay
Ø The Choice: 1~3 bus clocks. Set at 3

Trfc0 for DIMM0
Ø The Choice: 75ns, 105ns, 127.5ns, 195ns, or 327.5ns. Set at 75

Trfc1 for DIMM1
Ø The Choice: 75ns, 105ns, 127.5ns, 195ns, or 327.5ns. Set at 75

(Twr) Write Recovery Time
Ø The Choice: 3~6 bus clocks. Set at 6

(Trtp) Precharge Time
Ø The Choice: 2~3 clocks. Set at 3

(Trc) Row Cycle Time
Ø The Choice: 11~26 bus clocks. Set at 26

(Trcd)RAS to CAS R/W Delay
Ø The Choice: 3~6 clocks. Set at 6

(Trrd)RAS to RAS Delay
Ø The Choice: 2~5 clocks. Set at 5

(Trp)Row Precharge Time
Ø The Choice: 3~6 clocks. Set at 6

(Tras)Minimum RAS Active Time
Ø The Choice: 5~18 bus clocks. Set at 18

I have no idea what to change to make it run faster also the voltage is at default which is lower than 1.9.

Please tell me what to change

Thanks

(Trcd)RAS to CAS R/W Delay
Ø The Choice: 3~6 clocks. Set at 5

(Trrd)RAS to RAS Delay
Ø The Choice: 2~5 clocks. Set at 5

(Trp)Row Precharge Time
Ø The Choice: 3~6 clocks. Set at 5

(Tras)Minimum RAS Active Time
Ø The Choice: 5~18 bus clocks. Set at 12

Manually set the voltage to 1.9v. Leave all other settings at default.