Originally Posted by
vtss120204
Hi,can anyone understand this problem,I have a Striker 2 Extreme,2x GTX280 SLI,Q9550 cpu and 4GB corsair ram,motherboard is watercooled so no heat problems.
The problem is,when I enable SLI in the Nvidia control panel,I get constant lockups while at the desktop,never while gaming though,I can play Crysis for 4 hours straight with SLI enabled and it never locks,it's only while browsing the net with opera,or encoding a movie with ConvertXtoDvd 3 or similar programs,will the pc lock,I don't get the blue screen,I get the hour glass thing and eventually it will just lock,having to cold boot it with the reset button.
Here is the rediculas part,the bit I can't understand,this problem only happens when I have SLI enabled at high resolutions,if I enable SLI at 1920x1080 and start browsing the net or encode a movie,the pc will lock within an hour or less,but if I put the resolution back to 1280x270 and set SLI,the pc is totally stable,never locks,I can run it for months at 1280x720 with SLI enabled and it never locks up,it's only when I run the pc at 1920x1080 with SLI enabled will it lockup all the time.
The only difference I can see with the cards,is when I have SLI enabled at 1280x720,Everest says both cards are running at 300mhz idle speeds,and when I have 1920x1080 running with SLI Everest says both cards are running at 400mhz each,so the cards go up an extra 100mhz each running SLI at higher res,not sure if that is the cause,I even upgraded my 1000w PSU to the Corsair HX-1000W thinking I might of been under powered,but it didn't help at all.
I don't think the motherboard is faulty because this is my second Striker 2 Extreme and they have both had the same problem,I have ruled out it being a heat problem because with the water cooling,the NB sits at around 24c and never goes over 30c,the SB sits around 45c and the cpu never goes over 50c under full load,that's with the cpu overclocked at 3.8ghz.
This problem happens with the cpu at stocks speeds and when it's overclocked,doesn't seem to make any difference,the cpu is stable at 3.8ghz because I can run prime95 for over 9 hours on blend and get no errors,and I ran that IntelBurnTest 20 times and passed all tests.
It is a really anoying problem,how I can have a perfectly stable SLI system at 1280x720,and as soon as I try the res up to 1920x1080 with SLI I get constant locking,really doesn't make any sense.
Does anyone have any advice that might help me sought this problem out.
Currently my bios specs are
Required System Specifications
PSU ( Power Supply Unit ) = Corsair HX-1000W
CPU = Q9550
RAM = 4GB DDR3 Corsair TW3X4G1800C8DF PC-14400 (1800MHz) 8-8-8-24
HDD = 2x WD 1TB and 300GB WDRaptor
VGA1 = XFX 280GTX Extreme 1gig
VGA2 = XFX 280GTX Extreme 1gig
SPU ( Sound Card ) = Onboard
NorthBridge Cooling = watercooled
SouthBridge Cooling = watercooled
Mesfets both watercooled
CPU Cooling = watercooled
RAM Cooling = Corsair cooler
nFORCE Chipset Drivers Version = 15.23
ForceWare/GeForce Drivers Version = 180.48
Sound Card Drivers Version = ASUS site ones.
BIOS version 0801 REQUIRED - Currently using 1104
BIOS Settings
Extreme Tweaker
CPU Level Up = Auto
Memory Level Up = Auto
AI Overclock Tuner = Manual
CPU Multiplier = 8.5
FSB - Memory Clock Mode = Linked
FSB - Memory Ratio = Synch
FSB (QDR) MHz = 1800
MEM (DDR) MHz = 1800
LDT Frequency = 5x
PCIE Bus Slot 1 & 2 MHz = 100
PCIE Bus Slot 3 MHz = 100
SPP<->MCP Ref Clock, MHz = auto
SLI-Ready Memory = Disabled
Memory Timing Setting
P1 = Enabled
P2 = Enabled
tCL ( CAS Latency ) = 8
tRCD = 8
tRP = 8
tRAS = 24
Command Per Clock (CMD) = 2T
tRRD = auto
tRC = auto
tWR = auto
tWTR = auto
tFAW = auto
tRD = auto
tRTP = auto
tRFC = auto
tREF = auto
Over Voltage
CPU Voltage = 1.46V
Loadline Calibration = disabled
CPU PLL Voltage = auto
CPU VTT Voltage = auto
Memory Voltage = 1.84V
NB Core Voltage = 1.60V
SB Core Voltage = 1.60V
CPU GTL REF0 Ratio = auto
CPU GTL REF1 Ratio = auto
CPU GTL REF2 Ratio = auto
CPU GTL REF3 Ratio = auto
NB GTL REF Ratio = Auto
DDR3 CHA1 Ref Volt = DDR3_REF
DDR3 CHB1 Ref Volt = DDR3_REF
DDR3 CHA2 Ref Volt = DDR3_REF
DDR3 CHB2 Ref Volt = DDR3_REF
CPU Configuration
CPU Internal Thermal Control = Disabled
Limit CPUID MaxVal = Disabled
Enhanced C1 (C1E) = Disabled
Execute Disable Bit = Disabled
Virtualization Technology = enabled
Enhanced Intel SpeedStep(tm) Tech. = Disabled
CPU Core 2 = Enabled
CPU Core 3 = Enabled
CPU Core 4 = Enabled
Spread Spectrum Control
CPU Spread Spectrum = auto
PCIE Spread Spectrum = auto
MCP PCIE Spread Spectrum = auto
SATA Spread Spectrum = auto
LDT Spread Spectrum = auto