Quote Originally Posted by tonytouch View Post
need some help tweaking my memory timings. any ideas guys?
thanks a bunch

Field Value
Memory Module Properties
Module Name G Skill F2-8500CL5-1GBPK
Serial Number None
Module Size 1 GB (2 ranks, 4 banks)
Module Type Unbuffered DIMM
Memory Type DDR2 SDRAM
Memory Speed DDR2-800 (400 MHz)
Module Width 64 bit
Module Voltage SSTL 1.8
Error Detection Method None
Refresh Rate Reduced (7.8 us), Self-Refresh

Memory Timings
@ 400 MHz 5-5-5-15 (CL-RCD-RP-RAS) / 23-42-3-6-3-3 (RC-RFC-RRD-WR-WTR-RTP)
@ 266 MHz 4-4-4-10 (CL-RCD-RP-RAS) / 16-28-2-4-2-2 (RC-RFC-RRD-WR-WTR-RTP)

Enhanced Performance Profile
Profile Name High Performance
Optimal Performance Profile Yes
Memory Speed DDR2-1066 (533 MHz)
Voltage 2.1 V
Memory Timings 5-5-5-15 (CL-RCD-RP-RAS)
Row Cycle Time (tRC) 47T
Command Rate (CR) 2T
Write Recovery Time (tWR) 12T

Memory Module Manufacturer
Company Name GSkill International Enterprise
Product Information http://www.gskill.com/indexen.html
Unless you are the sort of person (like me) that likes to tinker for the sake of tinkering you really don't need to manually set any of the secondary timings just leave them on auto.

I would just set Fast.Fast.Auto.Agressive.5.5.5.15.5.35 ~ whatever it needs & leave everything else on auto & see what happens. You can run something like Prime 95 on a custom 4096 stability test & tweak the primary timings up & down in BIOS or Memset till you get your desired performance. I would also use Everest bandwidth & latency test & Super PI 32m as a good gauge as to whether your tweaking is achieving anything or not.

You can also use Memset to discover what your board/BIOS has set for most of the secondary timings which will give you a start point to tweak/test from.

My 1GB sticks of Micron based RAM like the following for about DDR 1200 ~ 1250 @ 2.2 ~ 2.3v

Code:
Enhance Data Transmitting................. Fast
Enhance Addressing........................ Fast
T2 Dispatch............................... Auto
Clock Setting Fine Delay.................. All Auto * Aggressive

CAS Latency Time (tCL).................... 5
RAS# to CAS# Delay (tRCD)................. 5
RAS# Precharge (tRP)...................... 5
Precharge Delay (tRAS).................... 9
All Precharge to Act...................... 4 ~ 5
REF to ACT Delay (tRFC)................... 24 ~ 35

Performance Level......................... Auto (depends on divider)
Read Delay Phase Adjust................... Leave on auto.
MCH ODT Latency........................... Auto ~ 2
Write to PRE Delay (tWR).................. 11
Rank Write to Read (tWTR)................. 10
ACT to ACT Delay (tRRD)................... 3
Read to Write Delay (tRDWR)............... 8
Ranks Write to Write (tWRWR).............. 4
Ranks Read to Read (tRDRD)................ 5
Ranks Write to Read (tWRRD)............... 4
Read CAS# Precharge (tRTP)................ 3
ALL PRE to Refresh........................ 4
Hope this helps

CN