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Help! Fake memory? Incorrect settings? - Page 4

post #31 of 35
Thread Starter 
Quote:
Originally Posted by kvswim View Post
update bios?
It is already the latest...
    
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post #32 of 35
Quote:
Originally Posted by aambrozai View Post
Okay, I did a cross check with my old memory modules. Here is what I found:
OCZ Platinum DDR PC6400 (800MHz) memory modules: at 800MHz I get 5-5-5-15. at 750MHz I still get only 5-5-5-15. What's the problem with that? The memory modules are 4-4-4-15!!!
Kingston DDR PC8500 (1066MHz) memory modules: at 975MHz (that is the most I can get) I get 5-7-7-22. At 800MHz I get 5-5-5-18. At 750MHz I get 5-5-5-18 still... And the modules are 5-5-5-15!!!

It seems my motherboard uses memory slower that it should be, for some reason...
There is no problem. Nearly all memory are programmed to JEDEC standard timings/voltages so they can boot up on all motherboards without problems. Any timings that are non-standard have to be manually set. Some memory will have custom settings programmed into EPP or XMP but needs a mobo that supports it to boot with those settings.

So to be clear, you need to set everything manually. Boot into BIOS, press Ctrl+F1 and you'll get the hidden timing options in M.I.T. like this: http://www.overclockersclub.com/revi.../images/89.htm

If you want to run 1066 set FSB to 320.
Go into M.I.T. and set:

System Memory Multiplier 3.33 (320x3.33=1066)

DRAM Timing Selectable Manual
CAS Latency Time 5
Dram RAS# to CAS# Delay 5
Dram RAS# Precharge Delay 5
Precharge Delay (tRAS) 15
ACT to ACT Delay (tRRD) Auto
Rank Write to READ Delay Auto
Write to Precharge Delay Auto
Refresh to ACT Delay Auto
Read to Precharge Delay Auto
tRD Auto
tRD Phase Adjustment Auto

System Voltage Control Manual
DDR2 OverVoltage Control +0.4V

EDIT: And if you want to learn more: http://forums.tweaktown.com/gigabyte...t-vs-bios.html
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post #33 of 35
Thread Starter 
Quote:
Originally Posted by qiqi1021 View Post
There is no problem. Nearly all memory are programmed to JEDEC standard timings/voltages so they can boot up on all motherboards without problems. Any timings that are non-standard have to be manually set. Some memory will have custom settings programmed into EPP or XMP but needs a mobo that supports it to boot with those settings.

So to be clear, you need to set everything manually. Boot into BIOS, press Ctrl+F1 and you'll get the hidden timing options in M.I.T. like this: http://www.overclockersclub.com/revi.../images/89.htm

If you want to run 1066 set FSB to 320.
Go into M.I.T. and set:

System Memory Multiplier 3.33 (320x3.33=1066)

DRAM Timing Selectable Manual
CAS Latency Time 5
Dram RAS# to CAS# Delay 5
Dram RAS# Precharge Delay 5
Precharge Delay (tRAS) 15
ACT to ACT Delay (tRRD) Auto
Rank Write to READ Delay Auto
Write to Precharge Delay Auto
Refresh to ACT Delay Auto
Read to Precharge Delay Auto
tRD Auto
tRD Phase Adjustment Auto

System Voltage Control Manual
DDR2 OverVoltage Control +0.4V

EDIT: And if you want to learn more: http://forums.tweaktown.com/gigabyte...t-vs-bios.html
Thanks, I found the hidden settings. Problems are:
1) I can't do anything with the maximum speed. It won't accept it as PC8500 (1066) only recognizes as PC6400(800). Still cannot get more that 975MHz
2) Also, I did the manual timing in BIOS, but if I try 5-5-5-15 the BIOS sets back everything to Auto.

Either the RAMs or my mobo (or both) are not the best performers... :-(

The final question is: how much slower is 5-5-5-18 than 5-5-5-15? 1%? 5?% 10%? 20%? ... (Just to know to keep the faster 2*1GB modules and sell the slower 2*2GB modules or the othey way around.)
    
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post #34 of 35
1. What (program? BIOS? Memtest?) recognises as PC6400? If with x3.33 it recognises 975 might be that divider is broken. Maybe run at 7x355FSB=2485 (or 7.5x if that's stable) and 355x3=1065 mem see if that boots.
2. Try MCH OverVoltage +0.1 or 0.2, or setting Refresh to ACT Delay to 60 instead of auto.

5-5-5-18 and -15 is next to no difference. Personally I would rather have 4GB slower vs 2GB higher clocked RAM. But if you're running a 32-bit OS you can only address ~3GB RAM anyway.
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post #35 of 35
You're not gonna max Crysis with a Intel E2140 lol.
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