I've recently bought a used Eclipse SLI (still in warranty) and an i7 920 (D0). I was building my comp for about 3hrs figuring all that cable inside the Thermaltake Spedo Adv. to finally finish and have a PC that wont pass POST...
After some fiddling around with Clear CMOS and battery removal I've finally got it running. At first but I had to reset the BIOS and on the POST screen I've noticed briefly that the comp had 4096MB of RAM (4GB). I thought it was something else coz the screen went by fast. I've waited for Windoze 7 to load and quickly went to task manager to see my new 4 Cores and 4Threads And then... I saw under Physical Memory that I had only 4GB of RAM... I went back into BIOS in the system info and saw that there are indeed 4GB of RAM... in Triple Channel !! I then went into DRAM config and there were setting for 3 Sticks of Ram... weird. Rebooted into Windows again and opened up CPUz to find that it was "seeing" 6GB of Ram in Tripple Channel config..
My OS is: Windows 7 64 Ultimate
P.S. The DLED2 screen is always ON and it always displays CPU Ini.
What should I do next?
I've tried the Ram sticks one by one but the comp wont POST with 1 stick installed... it will tho with 2 sticks but then it shows only half the amount of memory again!
If cpu-z sees all 6 gb of ram, I would leave it alone once you have it stable and running. If a ram stick or slot is bad, I doubt it will even post. I've had windows not detect certain hardware changes if they occur after installing windows. Good luck.
Yes it is. A bios update might fix it, but you always have to ask yourself if it's worth getting a dead board with a bad flash. And newer bios versions are sometimes worse than the ones they replace. So be sure a bios flash will fix the problem before using it, especially if you can't afford another board.
BIOS sees 4GB out of 6GB
BIOS sees 3 DDR3 sticks installed and running in TriChan mode
POST screen displays 4096MB OK
Windows sees 4086MB out of 6GB (Win7 64bit)
CPUz sees 6GB of RAM running at 1333Mhz CL9 1.5V
Everest 5 sees 4086MB of RAM but 3 DDR3 sticks installed and running at TriChan
This may be a problem that a new board of the same model can't fix. These chipsets are fairly new and quirks happen. If you want to try a different brand/model, now's the time to do it if newegg or your vender will permit you to change brands. But if everything else works and it's going to cost you money to change boards, then you have to decide if it's worth it.
If yours is msi, then check gigabyte or asus website and see if your ram has been tested with one of their newer boards. Use newegg's advanced search software and select "1366" and usb 3.0 for their selection. They have about 5 boards available with usb 3.0 if you need it, mostly gigabyte.
CAS# latency (CL) 9.0
RAS# to CAS# delay (tRCD) 9
RAS# Precharge (tRP) 9
Cycle Time (tRAS) 24
Command Rate (CR) 1T
Memory Frequency 666.5 MHz (2:10)
Memory Type DDR3 Memory Size 6144 MBytes
Windows Version Microsoft Windows 7 (6.1) Ultimate Edition (Build 7600)
Number of processors 1
Number of threads 8
Number of threads 8 (max 16)
L2 cache 4 x 256 KBytes, 8-way set associative, 64-byte line size
Instructions sets MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, EM64T
Package (platform ID) Socket 1366 LGA (0x1)
Temperature 0 38°C (100°F) [0x26] (CPU)
Temperature 1 65°C (148°F) [0x41] (IOH)
Temperature 2 26°C (78°F) [0x1A] (System)
Temperature 0 55°C (130°F) [0x2D] (Core #0)
Temperature 1 51°C (123°F) [0x31] (Core #1)
Temperature 2 50°C (121°F) [0x32] (Core #2)
Temperature 3 48°C (118°F) [0x34] (Core #3)
Even a slightly bend pin on the lower side of the socket (facing the PCE-e bus) could cause a problem. Check the socket directly from above to detect any out of shape pins. My problem was that a few (10-15) pins where bent out of place.