Hello all - I'm somewhat new to this level of equipment, and am having some odd issues. Perhaps your experience can shed some light?
Asus Rampage Extreme
Intel Q9550 2.83GHZ Quad Core CPU
OCZ Reaper 4X2GB (8GB total over 4 sticks) OCZ3RPR16004GK
Antec 850W power
ZOTAC GeForce GTX 260
WD VelociRaptor 300 GB
Vista 64 Home Basic
ANTEC 900 Case with a LOT of large fans
MB is air cooled, and both heatsinks were replaced with the larger fin type units that came with the MB. a large aftermarket cooler has been added to the CPU (which runs nice and cool). Out of desparation, I've attached the little adder fan to the NorthBridge, this this doesn't appear to have any affect.
Upon first assemble and boot-up w/ default settings, system was highly unstable and frequently crashed. So, I've been playing - BIOS. A lot. The system is now mostly "stable", but I'm not so sure it really is. When I fire up CPU-Z initially on a fresh boot, and then click on the SPD tab to see each Memory stick, it tells me I have 8 GB of RAM, and each stick shows up nice and healthy.
But if I play Crysis for a while, close out CPU-Z, and then Relaunch CPU-Z, my memory is randomly funky. It still says I have 8GB in the summary, but when I go and click on each of the 4 sticks, randomly some of those sticks will be blank or garbled. What does this mean? The system isn't crashing, but I'm not filled with a comfort. Does this somehow means RAM sticks are dropping out on me under usage. NorthBridge warms up to around 52C or so, which seems warm to me.
A reboot normally fixes the issue.
Here are some screenprints
The first shows, on the left, the System Information for Windows view - note that only 3 of the 4 memory slots are listed as being full. The CPU-Z data shows that I have 8GB of RAM though. Odd... the readings on the right are my various voltages and T's.
OK, so what does CPU-Z say - afterall, it says I have 8 GB of RAM, so it must see it all right? Here's what it says is in the first DIMM slot:
well that looks OK, except the part number is all garbled.
Here's what it says is in the second - that doesn't look so good!
Memory slot 3 looks OK(ish)...
Memory slot 4 is Empty??
Which memory sticks are garbled and which are good change every time I do this experiment, so I don't think any one RAM stick is necessarily bad.
(The good folks over at OCZ are also trying to help me on this, but this little quirk remains)
My BIOS Settings (at this moment)
AI Overclock Tuner: Manual
OC from CPU Level UP: Auto (oddly, you can only select auto or some higher ranking overclocked setting - you can't just set it to just not overclock)
OC from Memory level up: Auto
FSB Frequency: 360
PCIE Freq: 100
DRAM Freq: DDR3-1441MHz (note, I've taken this down to 1333, issue still remains)
DRAM Command Rate: 2N
DRAM Timing Control: Manual
CAS# Latency 8 DRAM Clocks (RAM is actually rated for 7-7-7 @ 1600 @ 1.9V)
RAS# to CAS# Delay: 8
RAS# PRE Time: 8
RAS# ACT Time: 24
RAS# to RAS# Delay: Auto
DRAM Static Read Control: Disabled
DRAM Dynamic Write Control: Disabled
Dram Skew Control: (All Auto)
AI Clock Twister: Lighter
AI Transaction Booster: Manual
(then it displays: C/P : A1 A2 I B1 B2
LvL: 7 7 7 7
Common Performance Level: 07
Pull-In of CHA PH1: Disabled
EPU II Phase Control: Auto
CPU Voltage: 1.29375 (CPU doesn't appear to be having any temperature or performance issues)
Load-Line Calibration: Auto
CPU PLL Voltage: 1.55081
FSB Termination Voltage: Auto
CPU GTLVref(0): Auto
NB GTLVref: Auto
North Bridge Voltage: 1.39172 (been playing with a lot of these)
DRAM Voltage: 1.78931 (sometimes take it up to 1.89, to see if that will help)
NB DDRVref: Auto
DDRE ChaA Vref: Auto
Southbridge 1.5 Voltage: Auto
SB 1.05 Voltage: Auto
CPU Spread Spectrum: AUto
PCIE Spread Spectrum: Auto
I hate to admit it, but I have no clue what most of these settings are or do. From what research I've done, this appears to be fairly conservative settings. While fast is good, I want my system to be rock solid stable. And I want all 8 GB of my RAM! Please help - any suggestions on why CPU-Z is saying some of my RAM sticks are randomly not working?Edited by LazyEngineer - 9/26/08 at 3:30pm