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ASUS M4A78T-E AMD 790GX Socket AM3 Motherboard Review
ASUS M4A78T-E AMD 790GX Socket AM3 Motherboard Review  - PCSTATS
The ASUS M4A78T-E motherboard is built on AMDs 790GX integrated graphics processor and SB750 southbridge, supports HyperTransport 3.0 at 5200 MT/S and has a 128MB DDR3-1333 memory buffer built in just for the Radeon HD 3300 IGP.
 84% Rating:   
Filed under: Motherboards Published:  Author: 
External Mfg. Website: ASUS Mar 04 2009   J. Apong  
Home > Reviews > Motherboards > ASUS M4A78T-E

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 a good reputation in the overclocking community, so we anticipate a nice boost in speed from the M4A78T-E. An AMD Phenom II X3 720 Black Edition processor was dropped in, now while this chip can be overclocked by simply raising the clock multiplier higher, to find out how well the M4A78T-E supports overclocking we'll need to adjusting motherboard clock speed until it can go no further!

Before the overclocking tests got underway, two sticks of Patriot PDC32G1600LLK memory were set to run at DDR3-800 MHz mode, this way it won't be holding the CPU back. AMDs standard 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 M4A78T-E motherboard was then increased from 200 MHz on up. PCSTATS also disabled features like Cool'n'quiet and AMD load balancing.

ASUS' M4A78T-E motherboard easily managed the jump from 200MHz up to 250MHz, and from there up to 270MHz. After that the system required a small 0.1V boost to memory voltage in order to keep overclocking. This allowed us to achieve a final overclock of 290MHz, identical to the M3A78-T board.

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 DDR3 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 M4A78T-Emotherboard, 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. Don't bother turning on 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 at the ASUS M4A78T-E and overclocked it. Next up, benchmarks!

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Contents of Article: ASUS M4A78T-E
 Pg 1.  ASUS M4A78T-E AMD 790GX Socket AM3 Motherboard Review
 Pg 2.  Testing 1080P HD Video Playback
 Pg 3.  Total System Power Draw Comparisons
 Pg 4.  ASUS M4A78T-E 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 M4A78T-E- Is DDR3 The Better Path?

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