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Test Configuration

X38 Comparison Part 2: DDR3 Motherboards
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We retained the same P35 comparison motherboard from our previous DDR2 motherboard comparison, but updated our DDR3 memory to a pair of Corsair’s DDR3-1800 Dominator modules.

System Hardware
Socket 775 Processor Intel Core 2 Duo E6750
(Conroe 65 nm, 2.67 GHz, 4 MB L2 Cache)
RAM Corsair Dominator TWIN3X2048-1800C7DF G DDR3-1800
2x 1024 MB at DDR3-1333, CL 5.0-5-5-15
Hard Drive Western Digital WD1500ADFD-00NLR1, Firmware : 20.07P20
150 GB, 10,000 RPM, 16 MB cache, SATA/150
Graphics Card Foxconn GeForce 8800GTX, P/N : FV-N88XMAD2-OD
NVIDIA GeForce 8800GTX - 768 MB
Power Supply OCZ GameXStream OCZ700GXSSLI - 700W
System Software & Drivers
OS Windows XP Professional 5.10.2600, Service Pack 2
DirectX Version 9.0c (4.09.0000.0904)
Platform Drivers Intel INF 8.3.1.1009
Graphics Driver NVIDIA Forceware 163.71

A note about memory settings : every attempt was made to run each system at 1333 CAS 5-5-5-20, but the 1333 MHz data rate wasn’t stable on the X38 Diamond, and CAS 5 was likewise unstable on the GA-X38T-DQ6. In the overclocked configuration we tried to run the memory clock at 1.60 times the CPU FSB clock (8:5 DRAM :CPU ratio) and CAS 7-7-7-20, but this had to be "backed down" to 1.20x on the X38 Diamond and Foxconn X38A. Details for these settings can be found in each motherboard’s overclocking description.

Our excellent CPU overclocking results are mostly due to great cooling. We’ve been getting a bunch of test time out of Swiftech’s triple 120 mm radiator, Apogee GTX CPU water block, and MCP-655b high-flow pump.

Benchmark Settings

Benchmarks and Settings
3D Games
Call of Duty 2 Version : 1.03
Video Mode : 1024x768
Anti-aliasing : off
Shadows : no
Timedemo demo2
F.E.A.R Version : 1.0 Retail
Video Mode : 1024x768
Computer : Medium
Graphics : Medium
Test Path : Options/Performance/Test Settings
Quake 4 Version : 1.2 (Dual-Core Patch)
Video Mode : 1024x768
Video Quality : default
THG Timedemo waste.map
Timedemo demo8.demo 1 (1 = load textures)
Audio
Lame MP3 Version 3.97 Beta 2 (12-22-2005)
Audio CD "Terminator II SE", 53 min
wave to mp3
160 kbps
OGG Version 1.1.2 (Intel P4 MOD)
Version 1.1.2 (Intel AMD MOD)
Audio CD "Terminator II SE", 53 min
wave to ogg
Quality : 5
Video
TMPEG 3.0 Express Version : 3.0.4.24 (no Audio)
fist 5 Minutes DVD Terminator 2 SE (704x576) 16:9
Multithreading by rendering
DivX 6.6 Version : 6.6
Profile : High Definition Profile
1-pass, 3000 kbit/s
Encoding mode : Insane Quality
Enhanced multithreading
no Audio
XviD 1.1.3 Version : 1.1.3
Target quantizer : 1.00
Applications
Autodesk 3D Studio Max Version : 8.0
Characters "Dragon_Charater_rig"
Rendering HTDV 1920x1080
Synthetics
PCMark05 Pro Version : 1.1.0
System, CPU and Memory Tests
Windows Media Player 10.00.00.3646
Windows Media Encoder 9.00.00.2980
SiSoftware Sandra 2005 Version 2005.7.10.60
CPU Test = Arithmetic, Multimedia Benchmarks
Memory Test = Bandwidth Benchmark
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