PCSTATS Main Page Follow PCSTATS on Facebook PCSTATS RSS Feed PCSTATS Twitter Feed + Motherboards
+ Videocards
+ Memory
+ Beginners Guides
News & Advanced Search  Feedback?
[X]   Directory of
Guides & Reviews

Beginners Guides
Weekly Newsletter
Archived Newsletters


Contact the Suite 66 Advertising Agency
Beginners Guides: Repairing a Cracked / Broken Notebook LCD Screen

ASUS M3A78-T AMD 790GX Socket AM2+ Motherboard Review

ASUS M3A78-T AMD 790GX Socket AM2+ Motherboard Review - PCSTATS
Abstract: The on-board Radeon HD 3300 VGA powers the HDMI port that's located on the I/O panel of the ASUS M3A78-T motherboard, along with Analog-VGA and DVI display outputs. The HDMI port can output High Definition content at 1080p.
 81% Rating:   
Filed under: Motherboards Published:  Author: 
External Mfg. Website: ASUS Feb 26 2009   Julian Apong  
Home > Reviews > Motherboards > ASUS M3A78-T

Overclocking the AMD 790GX and the BIOS

Overclocking Results:
Stock Max. OC
Motherboard Speed: 200 MHz

290 MHz

If you're new to Overclocking and not sure what to do, check out these two excellent Guides for some pointers:
Overclocking the CPU and Memory
Overclocking the Videocard

ASUS has maintained a reputation for PC gear overclocks well, so PCSTATS is really looking forward to overclocking the ASUS M3A78-T motherboard and the new 45nm Phenom II X3 720 Black Edition CPU, particularly since it's unlocked by default!

The AMD Phenom II X3 720 Black Edition runs at a default speed of 2.8 GHz, with its clock multiplier set to 14x. It can be overclocked by raising the clock multiplier higher, and then raising the motherboard reference clock speed. For our purposes, we'll be overclocking by adjusting motherboard clock speed, since we want to find out how fast the ASUS M3A78-T board will overclock.

Before the overclocking tests got underway, two sticks of Corsair CM2X1024-6400C4 (CAS4-4-4-12) memory were set to run at DDR2-800 MHz mode, this way it won't be holding the CPU back. A standard air cooled AVC Z7U7414001 heatsink was used (see Frostytech's review of it here). The 14x CPU clock multiplier was set to 8x, and the reference clock speed on the ASUS M3A78-T motherboard then increased from 200 MHz on up.

Going from 200MHz up to 240MHz was no problem, but beyond that Windows would crash to a BSOD on boot-up. Raising the VCore to 1.55V, and the CPU NB/Voltage to 1.4375V solved that problem, and we were able to continue raising the motherboard's FSB speed up to 270MHz until the M3A78-T crashed at POST.

Another voltage tweak brought the DDR2-memory increased the M3A78-T's overclocking results up to 290MHz, and we left it there. Overall it's a pretty good result, and a significant jump from what the Foxconn A7DA-S was able to achieve - score 1 for ASUS!

A quick peek into the BIOS:

The BIOS controls how the motherboard communicates with all the peripherals connected to it, and is a crucial component for any good well rounded motherboard. PCSTATS is only going to highlight the tweaking features so you'll know what to expect.

The manual overclocking page for all ASUS motherboards is called the JumperFree configuration. It's here that you can manually adjust the clock speeds for the FSB, set the CPU multiplier and adjust memory speeds and timings.

CPU voltages can be increased in +25mV increments up to a total of +375mV. The AMD 790GX northbridge can be brought up to +300mV, and the DDR2 memory can be increased to +600mV. Remember that these are the maximum voltages, and power settings this high can damage your motherboard and components, so be careful before you start adjusting them!

The advanced memory screen lets you configure some of the more exotic memory settings, while memory timings and frequencies are set on the JumperFree configuration page. Most of these memory settings will only be used for troubleshooting purposes or to get very exotic memory working properly on the ASUS M3A78-T motherboard, so most users can safely leave it alone.

Here's the Advanced CPU configuration page, where it's possible to adjust AMD's Cool'n'Quiet (CPU throttling), CIE support (enhance halt-state) and adjust a few other parameters. Advanced Clock Calibration can also be turned on thanks to the AMD SB750 southbridge controller. This feature can increase the overclocking potential of socket AM2+ Phenom CPUs.

Don't bother using ACC if you have a Phenom II processor installed. This increased functionality is already included with your shiny new processor.

Here's the configuration page for the internal graphics controller. Overclock the graphics processor is quite easy, and might give enough extra performance to warrant some fine-tuned adjustments. It's also possible to adjust the amount of memory the Radeon HD 3300 uses, as well as configure HDMI and audio output.

We've opened it up, taken a good look and tweaked it. But how will it perform on the bench? Check out some of our new benchmarks, just click the next page...

< Previous Page © 2018 PCSTATS.com Next Page >


Contents of Article: ASUS M3A78-T
 Pg 1.  ASUS M3A78-T AMD 790GX Socket AM2+ Motherboard Review
 Pg 2.  Testing 1080P HD Video Playback
 Pg 3.  Total System Power Draw Comparisons
 Pg 4.  ASUS M3A78-T Motherboard Highlights
 Pg 5.  AMD 790GX Chipset - Videocard or IGP?
 Pg 6.  — Overclocking the AMD 790GX and the BIOS
 Pg 7.  Motherboard Benchmarks: SYSmark 2007, Sandra 2009
 Pg 8.  Motherboard Benchmarks: PCMark Vantage
 Pg 9.  Motherboard IGP Benchmarks: 3DMark06
 Pg 10.  Motherboard IGP Benchmarks: 3DMark Vantage, FEAR
 Pg 11.  DX10 Motherboard IGP Benchmarks: Call of Juarez, Crysis
 Pg 12.  ASUS M3A78-T - Everything to Everyone?

Use the power of Google to search all of PCSTATS and the PCSTATS Forums. Tell us what you think of this new feature - FEEDBACK?
   12 / 16 / 2018 | 2:33PM
Hardware Sections 

PCSTATS Network Features Information About Us Contact
PCSTATS Newsletter
ShoppingList Assistance
Tech Glossary
Technology WebSite Listings
PermaLink News
Archived News
Submit News (Review RSS Feed)
Site Map
PCstats Wallpaper
About Us
Privacy Policy
Advertise on PCSTATS

How's Our Driving?
© Copyright 1999-2018 www.pcstats.com All rights reserved. Privacy policy and Terms of Use.