Hi all guys
I made my i7 system (Details are in my signature)5 days back. Important components are
1. Proccy: I7 920 D0
2. MoBo: DFI Lanparty UT X58 - T3EH8
3. RAM: OCZ DDR3 PC3-14400 800MHz DDR3 / CL 8-8-8-26 / 1.65 Volts
4. Bios: 7/24 beta: fixed Windows 7 CPU ratio issue.
5. OS: Windows 7 Ultimate RTM (X 64): Downloaded from MSDN (30 days evaluation) (Had vista 32).
Started everything at auto settings (didn’t touch the bios settings)…loaded windows 7 …..load went smoothly…… OS showed running stable 3-4 hours.
But memory shows
Memory: 6 GB RAM (2Gb Usable)
So, searched the net, found that the problem is common (took a deep relaxing breath).. and started doing the following.
1.CMOS reset (EZ reset in DFI) -- Nothing, POST showing 2044*** mb of RAM (Couldn’t remember the exact value, sorry)
2.Flashed the bios by bootable thumb drive method to most recent bios available -- bios update was successful but still detects only 2GB of RAM at POST.
3.Downloaded cpuZ: Detects 6GB of RAM and shows everything correctly.
4.Went to bios>Genie bios>voltage settings> Gradually increased DRAM Bus voltage and CPU VTT Voltage in sequential order (difference always less than 0.5) POSTing with every change in DRAM or CPU VTT.
Range tested:--------DRAM bus------------CPU VTT
Default.....................1.560------------------1.21
Final.........................1.650............... ........1.32
In all the post only 2GB was detected…. But OS was running without a hitch. Though some forums have increased DRAM to 1.7 and CPUVTT to 1.4, I suspected that I might need to RMA something or other and so was not willing to test over the prescribed safe limit.
5.Went to bios and changed the RAM timings manually to advertised values of 8 8 8 26. -- Still 2GB. (CPUZ / MEMSET detects 6GB with 8 8 8 26).
6.(Now was getting panicky again)…According DFI forum posts tried with DRAM PWM (reduce 15/ increase 15%) and VTT PWM (reduce 15/ increase 15%) -- Still 2GB
7. Started windows 7 memory diagnostics (Didn’t have memtest iso then) -- No error in memory in full test 5 runs
8. Started RAM slot musical chair test: (labeled RAM sticks as A, B, C and slots as 2,4,6 with slots 1,3,5 never being used and also with DRAM Bus 1.65/VTT 1.32/ Timings Auto)
Results:
Single stick: A/B/C in 2/ 4/ 6 (All possible single stick configuration) -- POST error
CF (Memory incompatible/DRAM voltage
unsatisfactory)
Triple channel:--------ABC -- 2 Gb,----ACB -- 2 Gb
--------------------------BCA -- 4 GB,----BCA -- 4 Gb
--------------------------CBA -- 4 GB,----CAB -- 4 Gb
All POSTed, but during the POST the screen would show 180*** memory for a fraction of a sec and then the value will change to 402***(4GB). So I decided to keep CAB configuration but after POST showed bootsector corrupted and couldn’t run win 7, nor could it run windows memory test (would freeze). Couldn’t even do a load windows from DVD (would freeze). Immediately went to bios and did optimized defaults but wouldn’t boot/ run from DVD.
There I am …… pretty confused and panicked. Since the memory control in i7 – X58 is dependent on processor/ mobo / Ram so I am lost as to where to begin.
To all u wizards
1. What should I do next? (I DON’T CURRENTLY have access to another pair of ddr3 RAM nor another X 58 mobo, but I am trying to arrange.)
2. What is wrong? RAM or MOBO?
3. Is there any one in Delhi (I am at AIIMS) who has a i7 system where I can test my RAM.....plz plz plz
Any help will be lifesaving. Thank you all for reading the long post but I didn’t want someone to tell me VTT/DRAM stuff again.
PS: I will be posting the same thing at the OCZ forum so interested persons check out progress there.
I can also post images of bios/ motherboard cpu pins if anyone needs.
__________________
System Information
Processor: Intel i7 920 Do
HSF: Prolimatech Megahalem/Scythe Ultrakraze Push/pull
Motherboard: DFI UT X58-T3EH8
Bios: 7/24 beta
RAM: OCZ DDR3 PC3-14400 800MHz DDR3 / CL 8-8-8-26 / 1.65 Volts
Gfx: Zotac 275GT (AMP)
Power: Corsair TX 850
Hard Drive: WD Cavier Green 1tb
UPS: APC 1000kVa Smart
Cabinet: NZXT Lexa Blackline
OS: Windows 7 Ultimate X64
-----------------------------------------
Posted again:
-----------------------------------------
DFI forum link
http://csd.dficlub.org/forum/showthread.php?t=11241