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AMD 790GX Issues


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#1 RandomUser

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Posted 18 January 2009 - 04:31 PM

I recently purchased a GA-MA790GP-DS4H with a 9600 that used an errata Fix in the Bios for some odd compatibility and performance issues. The board itself took longer than expected to post, approx. 2 - 3 minutes sometimes.... My Intel boards (All series) and and AMD Boards based on 939 and earlier had always posted much faster. For example, one board posted in 45 seconds or less. That board was based on the 754 socket and K8T800 (VIA) from MSI. That board still posts quickly.

So, due to the slow post of the GA-MA790GP-DS4H (Gigabyte), I returned it and the CPU and went to Asus M3A78-T which had some decent additional features. (Asus specific)
This board will only post every other time, but only after I reset the bios. I've checked to make sure no standoffs or other obstructions are causing issues. I've attempted to load fail safe defaults, and still the issues persist. Updated to the latest bios and that worked for about 10 posts and the issue returned. I'm using a 500 watt psu that is 80+ efficiency certified so, although it's a bit low it does support the configuration.

So, I'm wondering if anyone is aware of platform issues specific to the chipset, bios, or other items regarding motherboards built around the current ATI chipsets.

Original Configuration:

9600 CPU
GA-MA790GP-DS4H
4 GB Kingston
1 320 gb Sata 2 hard drive Seagate
On board sound and Video
500watt Thermaltake modular PSU

Current Config:

9950
M3A78-T
4 GB Kingston
1 320 gb Sata 2 hard drive Seagate
On board sound and Video
500watt Thermaltake modular PSU


Again, both based off of the 790GX Chipset.

Does anyone have additional thoughts or recommendations? Is there something I'm overlooking?


PS the Gigabyte board used an Award Bios, and Asus used an AMI bios.

Any input is greatly appreciated.

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#2 Sterling14

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Posted 20 January 2009 - 03:43 PM

You said you cleared the cmos. How did you go about doing this? Removing the battery, or using the jumper method? Sometimes the motherboards will be shipped with the cmos jumpers in the wrong spot. I would check your manual (it should be online if they didn't send you a full one) to see how the jumpers should be set.
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#3 RandomUser

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Posted 20 January 2009 - 06:48 PM

The Cmos Jumper did in fact ship in the wrong location. Asus said that this wouldn't cause a problem. Following the manual, I tried both the Battery removal and a 10 second spot on jumpers 2/3 (Clear Cmos). This caused the board to post but hang again on boot.... I'm not too worried about this at the moment, and have sent the board back for replacement of the same.

I'll make sure to double check the position of the CMOS jumper prior to boot-up.




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