NVIDIA nForce 780a SLI Motherboard Round-Up

Article Index

Our Test Systems and SANDRA


How We Configured Our Test Systems: When configuring our test systems for this article, we first entered their respective system BIOSes and set each board to its "Optimized" or "High performance Defaults". We then saved the settings, re-entered the BIOS and set memory timings for either DDR2-1066 (AMD) with 5,5,5,15 timings or DDR3-1333 with 7,7,7,20 timings (Intel). The hard drives were then formatted, and Windows Vista Ultimate was installed. When the Windows installation was complete, we updated the OS, and installed the drivers necessary for our components. Auto-Updating and Windows Defender were then disabled and we installed all of our benchmarking software, defragged the hard drives, and ran all of the tests.


 HotHardware's Test Systems
 Intel and AMD - Head To Head 

System 1:
Core 2 Quad Q6600
(2.40GHz - Quad-Core)
Core 2 Duo E6600
(2.40GHz - Dual-Core) 

Asus P5E3 Premium
(X48 Chipset)

2x1GB Corsair DDR3-1800
CL 7-7-7-20 - DDR3-1333

GeForce 8800 GTX
On-Board Ethernet
On-board Audio

WD740 "Raptor" HD
10,000 RPM SATA

Windows Vista Ultimate
NVIDIA Forceware v163.75
DirectX Redist (November 2007)

System 2:
AMD Phenom X4 9850
(2.5GHz)

Asus M3N-HT Deluxe
(nForce 780a SLI)

Asus CrossHair II Formula
(nForce 780a SLI

MSI K9N2 Diamond
(nForce 780a SLI) 

Gigabyte GA-MA790FX-DQ6
(AMD 790FX Chipset)

2x1GB Corsair PC2-8500
CL 5-5-5-15 - DDR2-1066

GeForce 8800 GTX
On-Board Ethernet
On-board Audio

WD740 "Raptor" HD
10,000 RPM SATA

Windows Vista Ultimate
NVIDIA Forceware v163.75/174.15 (Hybrid Testing)
DirectX Redist (November 2007)

 

 Preliminary Testing with SiSoft SANDRA XII
 Synthetic Benchmarks


We began our testing with SiSoftware's SANDRA XII, the System ANalyzer, Diagnostic and Reporting Assistant. We ran three of the built-in subsystem tests that partially comprise the SANDRA XII suite with an AMD Phenom X4 9850 processor installed in the Asus M3N-HT Deluxe motherboard (CPU Arithmetic, Memory Bandwidth, and Memory Latency).  All of the scores reported below were taken with the processors running a clock speed of 2.5GHz, with 2GB of DDR2-1066 RAM installed.  Please note however, that when the nForce 780a SLI IGP is used, 256MB of system memory is reserved for the IGP, which brings down the total amount of availabl memory and bandwidth.


 
Phenom X4 9850 @ 2.5GHz
CPU Arithmetic
nForce 780a SLI IGP

  
Phenom X4 9850 @ 2.5GHz

Memory Bandwidth
nForce 780a SLI IGP

 
Phenom X4 9850 @ 2.5GHz

Memory Latency
nForce 780a SLI IGP


  
 
Phenom X4 9850 @ 2.5GHz
CPU Arithmetic
 nForce 780a SLI Discreet Graphics


 
  
Phenom X4 9850 @ 2.5GHz
Memory Bandwidth
  nForce 780a SLI Discreet Graphics

 

  
Phenom X4 9850 @ 2.5GHz
Memory Latency
  nForce 780a SLI Discreet Graphics


The SiSoft SANDRA results above show how utilizing the nForce 780a SLI IGP affects CPU and memory performance. If you flip through the various results above, you'll see that the CPU Arithmetic and Multimedia benchmarks show very little variation in the two different configurations.  The Memory Bandwidth test, however, shows the system with discreet graphics having a 700MB/s advantage in terms of peak bandwidth.  This is direct result of the IGP sharing memory with the system.  We'll show how this affects overall system performance as well on the pages ahead.


Related content

Comments

Show comments blog comments powered by Disqus