iXBT Labs - Computer Hardware in Detail






Leadtek P4I845G (i845G) Mainboard

Mainboards from Leadtek do not look exotic anymore because the company was earlier mostly known as a video card maker. The model we test today doesn't shine with its package but its quality and functions are not just ordinary. 


  • Package of a standard design; 
  • Documentation: user manual in English; 
  • Cables: 1 ATA66/100/133 and FDD; 
  • Bracket with Front, Rear, Center/Sub controllers and an SPDIF-In/Out Coaxial one; 

  • Bracket for the rear computer panel; 
  • CD containing: 
    • drivers; 
    • Adobe Acrobat Reader; 
    • Leadtek Speed Gear; 
    • Award Winflash; 
    • DirectX 8.1. 

The layout is far not striking, but several quite frequent downsides are not fatal: audio-ins are in front of the PCI slots, the FDD is behind them and when a video card is installed it's difficult to handle the IDE modules. Also, it can be difficult to reach some jumpers when the board is already installed. Their functions are shown on the textolite.

The 3-channel switching voltage regulator incorporates 12 capacitors of 2200 uF. 

The following controllers are integrated: 

  • audio controller based on the C-Media CMI8738/PCI-6ch-MX chip supporting 5.1 audio systems and having a connector for front audio-outs and an SPDIF one; 
  • network controller based on the Realtek RTL8100B chip supporting 10BaseT/100BaseTX. 
Thanks to the Winbond W83637HF-AW SmartIO controller the board supports readers of smart cards and SD and MS cards (and has connectors) for them. 

The system monitoring is supported by the Winbond W83637HF-AW chip. What is controlled:

  • voltage of processor, AGP bus, +3.3, +5 and +/-12 V, VBAT and +5 V Standby; 
  • speed of 3 fans; 
  • temperatures of the processor (a built-in sensor), and the board (a built-in sensor). 
There are 2 connectors for adjustable and 1 for unadjustable connection of fans. 

Brief characteristics of the board: memory slots - 2 DDR SDRAM; expansion slots - AGP/ 5 PCI /CNR; I/O ports - 2 COM/ LPT/ 2 PS/2/ 6 USB 2.0; dimensions - 305x235 mm.  

Adjustment can be carried out with:

jumpers and switches Jumper to clear up the CMOS  
Jumpers to choose a FSB frequency Auto, 133 MHz
Jumpers for setting processor's voltage 1.1-1.85 V in 0.025V steps
Jumper for choosing a mode of the Bass/Center channel Normal/Inverse
Jumper for choosing a connector for the 6th USB port CNR/Onboard
Jumpers for setting audio-outs' mode Back Panel/ Front Panel
BIOS based on the 6.00PG version from Award Setup of memory timings + CAS Latency, Active To Precharge Delay, RAS to CAS Delay, RAS Precharge, Turbo Mode
Setup of memory frequency + Auto, DDR200, DDR266, DDR333
Setup of AGP bus -  
Setup of PCI bus -  
Changeable scaler of AGP and PCI buses -  
Manual assignment of interrupts -  
Changeable FSB frequency + 100-250 MHz in 1MHz steps
Changeable CPU multiplier + x8-x50
Changeable core voltage + 1.1-2.0 V in 0.025V steps
Changeable memory voltage + +0.1 V, +0.2 V
Changeable chipset voltage -  
Changeable AGP bus voltage + +0.1 V, +0.2 V, +0.3 V

We used the latest available version of the BIOS of 09/07/2002. 

Despite decent overclocking tools this board seems to be matching not an overclocker's system but a peaceful home computer which usually makes use of an audio adapter, a flash card reader etc. 

Test results: 


Dmitry Mayorov (destrax@ixbt.com)
Sergei Pikalov (peek@ixbt.com)

Write a comment below. No registration needed!

Article navigation:

blog comments powered by Disqus

  Most Popular Reviews More    RSS  

AMD Phenom II X4 955, Phenom II X4 960T, Phenom II X6 1075T, and Intel Pentium G2120, Core i3-3220, Core i5-3330 Processors

Comparing old, cheap solutions from AMD with new, budget offerings from Intel.
February 1, 2013 · Processor Roundups

Inno3D GeForce GTX 670 iChill, Inno3D GeForce GTX 660 Ti Graphics Cards

A couple of mid-range adapters with original cooling systems.
January 30, 2013 · Video cards: NVIDIA GPUs

Creative Sound Blaster X-Fi Surround 5.1

An external X-Fi solution in tests.
September 9, 2008 · Sound Cards

AMD FX-8350 Processor

The first worthwhile Piledriver CPU.
September 11, 2012 · Processors: AMD

Consumed Power, Energy Consumption: Ivy Bridge vs. Sandy Bridge

Trying out the new method.
September 18, 2012 · Processors: Intel
  Latest Reviews More    RSS  

i3DSpeed, September 2013

Retested all graphics cards with the new drivers.
Oct 18, 2013 · 3Digests

i3DSpeed, August 2013

Added new benchmarks: BioShock Infinite and Metro: Last Light.
Sep 06, 2013 · 3Digests

i3DSpeed, July 2013

Added the test results of NVIDIA GeForce GTX 760 and AMD Radeon HD 7730.
Aug 05, 2013 · 3Digests

Gainward GeForce GTX 650 Ti BOOST 2GB Golden Sample Graphics Card

An excellent hybrid of GeForce GTX 650 Ti and GeForce GTX 660.
Jun 24, 2013 · Video cards: NVIDIA GPUs

i3DSpeed, May 2013

Added the test results of NVIDIA GeForce GTX 770/780.
Jun 03, 2013 · 3Digests
  Latest News More    RSS  

Platform  ·  Video  ·  Multimedia  ·  Mobile  ·  Other  ||  About us & Privacy policy  ·  Twitter  ·  Facebook

Copyright © Byrds Research & Publishing, Ltd., 1997–2011. All rights reserved.