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Installing OCZ 2x1GB on Ultra-D


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Hello, newbie here, so forgive me if this has been asked before.

 

I just bought 2x1GB OCZ DDR400 PC-3200 Dual Channel Platinum (OCZ4002048ELDCPE-K) to replace my 1GB Corsair Value and will install it soon, and I'm wondering if I can leave the BIOS settings at default (auto), or do I need to manually set some values for it to work optimally? Last time I looked at the memory BIOS config page, I was a little overwhelmed (I'm not an OC'er, so I haven't a clue what any of the memory settings mean), so I'm hoping Auto works.

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Genie BIOS Settings:

FSB Bus Frequency - 200

LDT/FSB Frequency Ratio - Auto

CPU/FSB Frequency Ratio - Auto

PCI eXpress Frequency - 100Mhz

 

CPU VID StartUp Value - 1.500v

 

CPU VID Control - 1.300v

CPU VID Special Control - Avove VID * 110%

LDT Voltage Control - 1.40v

Chip Set Voltage Control - 1.70v

DRAM Voltage Control - 2.80v

 

DRAM Configuration Settings:

DRAM Frequency Set - 200 (DRAM/FSB:1/01)

Command Per Clock (CPC) - Enable

CAS Latency Control (Tcl) - 2.0

RAS# to CAS# delay (Trcd) - 03 Bus Clocks

Min RAS# active time (Tras) - 05 Bus Clocks

Row precharge time (Trp) - 02 Bus Clocks

Row Cycle time (Trc) - 13 Bus Clocks

Row refresh cyc time (Trfc) - 17 Bus Clocks

Row to Row delay (Trrd) - 03 Bus Clocks

Write recovery time (Twr) - 03 Bus Clocks

Write to Read delay (Twtr) - 02 Bus Clocks

Read to Write delay (Trwt) - 03 Bus Clocks

Refresh Period (Tref) - Auto

Write CAS Latency (Twcl) - Auto

DRAM Bank Interleave - Enabled

 

 

 

DQS Skew Control - Auto

DQS Skew Value - 0

DRAM Drive Strength - Auto

DRAM Data Drive Strength - Level 2

Max Async Latency - 8.0 Nano Seconds

DRAM Response Time - Normal

Read Preamble Time - 6.0 Nano Seconds

IdleCycle Limit - 256 Cycles

Dynamic Counter - Disable

R/W Queue Bypass - 16 x

Bypass Max - 07 x

32 Byte Granularity - Disable(4 Bursts)

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I just tried the above suggestions for timing and my 3Dmark 2001 score dropped.

First run was 21543. Rebooted and reset to performance defaults and PCI pay load to 256.

I ran it again and it did 21673. The last score is exactly what I get when I rean 3Dmark 2001 the first time.

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i can run tighter than those timings above, but those are very safe timings for every system I have installed these modules to (regardless of cpu, but for Winchester cpu's it is essential to run these timings)

 

the ones you can try to tighten up are as follows:

 

 

Row Cycle time (Trc) - 7 Bus Clocks

Row refresh cyc time (Trfc) - 16 Bus Clocks

Row to Row delay (Trrd) - 02 Bus Clocks

Write recovery time (Twr) - 02 Bus Clocks

Write to Read delay (Twtr) - 01 Bus Clocks

Read to Write delay (Trwt) - 02 Bus Clocks

 

 

 

Max Async Latency - Auto (will usually default to 8.0ns anyway)

DRAM Response Time - Fast

Read Preamble Time - 5.5 Nano Seconds

 

 

with some fooling around, and having a Venice/San Diego/X2 newer core cpu, you can probably pull these timings (my San Diego 4000+ will do these timings at stock speeds)

 

your results may vary, and I am using the 7/04-2BT bios, and yellow slots ;)

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First run was 21543. I ran it again and it did 21673.

 

Difference between these 2 results is about 0.005, or 0.5%. I think this is within standard deviation of the software itself. Surely nothing you'll see in real world application. Run the test a few times, without changing anything, and you'll see it vary by this much.

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