Originally posted by: MKD
Hey Blast PE - thanx for such a rapid and easy to understand reply!
Worked through those settings and can confirm my 775Dual-VSTA PC has started up just fine and cpu-z reports the hoped for 4-4-4-12 for my Corsair TwinX XMS2 1GB DDR2-5400 memory part: TWIN2X2048-5400C4
The reported cpu-z Memory Timings (as tallied to your BIOS listing) are in this order:
- Frequency 332.7MHz
- FSB : DRAM 4:5
- CAS# Latency (tCL) = DRAM CAS# Latency [4]
- RAS# to CAS# Delay (tRCD) = Active to CMD (Trcd) [4T]
- RAS# Precharge (tRP) = Precharge to Active (Trp) [4T]
- Cycle Time (tRAS) = Active to Precharge (Tras) [12T]
- Command Rate (CR) = DRAM Command Rate [2T Command]
As you didn't mention it I have left the setting from lower down the BIOS screen:
DRAM Voltage = Auto
It all makes a lot more sense now.
Have to hope it stays stable
Now of course I read there could be yet more performance freely available:
1) That it MAY be quicker to run the memory at 533 instead of 667
2) That I could be overclocking my 6300 beyond its now 1862MHz = 7x266MHz + 1066MHz
Enough for one day
Thanks!
MKD
I have the exact same memory, a 6400 and a pci-e 8800 gts 320 mb on a 775dual-vsta
Just to let you know what I've run into here (I'm at bios 2.4)
DDR 667 - 333 mhz @ 4.0 - 4 - 4- 12, 1T and pipeline ON: 4842 MB Bandwidth (IS STABLE)
DDR 533 - 266 mhz @ 3.0 - 3 - 3- 12, 1T and pipeline ON: 5106 MB Bandwidth (UNSTABLE)
DDR 533 - 266 mhz @ 4.0 - 4 - 4- 12, 1T and pipeline ON: 4968 MB Bandwidth (UNSTABLE)
DDR 533 - 266 mhz @ 4.0 - 4 - 4- 12, 2T and pipeline ON: 4787 MB Bandwidth (UNSTABLE)
DDR 533 - 266 mhz @ 4.0 - 4 - 4- 12, 1T and pipeline OFF: 4775 MB Bandwidth (UNSTABLE)
Think I'll have to try to update the bios. I though asrock gave up on it with the 2.4 and now theres how many updates out? 5 bios updates :S
UPDATE: Flashed to bios ver. 3.00 No difference.
The memory is only stable at the topmost settings.
Haven't checked the following settings though:
DDR 533 - 266 mhz @ 4.0 - 4 - 4- 12, 2T and pipeline OFF:
Though I think that the reduced bandwidth from 2T and pipeline off will probably negate the benefit of running 1:1...