I had the same problem
Pc spec
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System Information
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Time of this report: 1/18/2012, 22:41:55
Machine name: SAJINPRINCE-PC
Operating System: Windows 7 Enterprise 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.110622-1506)
Language: English (Regional Setting: English)
System Manufacturer: Gigabyte Technology Co., Ltd.
System Model: X58A-UD3R
BIOS: Award Modular BIOS v6.00PG
Processor: Intel(R) Core(TM) i7 CPU 950 @ 3.07GHz (8 CPUs), ~3.1GHz
Memory: 6144MB RAM
Available OS Memory: 6142MB RAM
Page File: 3339MB used, 8943MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.01.7601.17514 32bit Unicode
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DxDiag Notes
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Display Tab 1: No problems found.
Sound Tab 1: No problems found.
Sound Tab 2: No problems found.
Input Tab: No problems found.
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DirectX Debug Levels
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Direct3D: 0/4 (retail)
DirectDraw: 0/4 (retail)
DirectInput: 0/5 (retail)
DirectMusic: 0/5 (retail)
DirectPlay: 0/9 (retail)
DirectSound: 0/5 (retail)
DirectShow: 0/6 (retail)
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Display Devices
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Card name: NVIDIA GeForce GTX 570
Manufacturer: NVIDIA
Chip type: GeForce GTX 570
DAC type: Integrated RAMDAC
Device Key: Enum\PCI\VEN_10DE&DEV_1081&SUBSYS_087E10DE&REV_A1
Display Memory: 4063 MB
Dedicated Memory: 1248 MB
Shared Memory: 2815 MB
Current Mode: 1920 x 1080 (32 bit) (60Hz)
Monitor Name: Generic PnP Monitor
Monitor Model: SyncMaster
Monitor Id: SAM0656
Native Mode: 1920 x 1080(p) (60.000Hz)
Output Type: DVI
Driver Name: nvd3dumx.dll,nvwgf2umx.dll,nvwgf2umx.dll,nvd3dum,nvwgf2um,nvwgf2um
Driver File Version: 8.17.0012.8562 (English)
Driver Version: 8.17.12.8562
DDI Version: 11
Driver Model: WDDM 1.1
Driver Attributes: Final Retail
The problem is this board does not like memory that runs at 1600 mhz.
This seems to be related to a discrepancy between memory and Processor. This specific Processor requires 1066Mhz - 1.5 volts memory. We can also use 1333Mhz - 1.5 volts but the memory controller will downgrade the speed to 1066. Working over these specifications will cause some issues on the system as random reboots, the system freezes and many other problems since we are forcing the Processor to downgrade the speed and probably the voltage since most of the 1600Mhz RAM works at 1.6 or 1.65 volts. This may also damage the memory controller on the Processor voiding its warranty.
Steps i did to resolve.
I got rev 2.0 from gigabyte (Swapped out the board).
The problem still persisted.
I then enabled XMP memory profile setting in the bios.
This resolved the random stuttering problem.
I saw the voltage was set to high though.
So i set all the memory timings manually
8,8,2 (If i remember correctly) for my Corsair Dominator memory and I raised the voltage to the maximum intel recommended to not damage the processor.
Your Ram manufacturer should list the timings on their website for your ram and don't forget to raise the voltage and set the multiplier so the memory runs at 1600 mhz.
You can just use the XMP profile setting and it will set everything for you but it is very aggressive with voltage etc.. and you might damage something lonmg term but it still resolves the problem.