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M3A78-EMH HDMI Issue

A

andywoudstra

Junior Member
Anyone have any idea why my 3DMARK06 scores went from around 10500 with the M2A-VM motherboard and Sapphire 3870, to around 7500 with the M3A78-EMH HDMI motherboard? I used all the same other componenets - video card (Sapphire 3870), memory (2 Gig (matched 1Gig sticks from Corsair)), power supply, case, 2xSeagate 7200.10 250Gig in RAID 0. Also same OS (XP SP2 - same installation methods/sequences on both boards).

Note I've gone back and forth between the two motherboards twice now, just to make sure it wasn't something I was doing. My kids also played a couple of games on both systems, and got the problem as well, so it's not just 3DMARK06.

What actually happens with the M3A78 is that everything is flying along just fine, then suddenly, randomly, it'll slow down for 1-5 seconds from say 70fps, to 1-5fps, then back to 70fps. During the whole 3DMARK06 run (the free version) it'll only happen maybe 6 or 7 times, but that's enough to drop the score by around 3000 points.

ASUS was no help. Any ideas would be appreciated. Note I do have the latest BIOS and drivers on both motherboards. I'm a PC technician by trade and have made hundreds of PCs over the past 15 years, and I've never had anything like this happen. However, I don't know everything - for all I know it's something simple I just missing!

Thanks,

Andy
 
Sorry about the delay. I've gone back to the M2A motherboard and the M3A78 is just sitting in a corner:-(

The CPU is an Athlon 64 X2 6400+. I know you'll probably say it's overheating, but then it should do the same on the M2A. Besides, I've run super pi, two instances to get the cpus to 100%, and the temp tops out at 48-49.

Maybe it is a bad motherboard?
 
Andy, This reply is late and you've probably read about the problems the m3a78 has with the 125W TDP processors (X2 6000+, 6400+). Could be that the portion of the test that causes a slow-down could be stressing the processor to the point of overheating -- just a thought. Perhaps a CPU swap-out may do the trick.

Support from Asus is not very good (can't update BIOS, ASUS Probe doesn't always work, ASUS tech support is no help, ...). I'd should have gone with the Giga-Byte board instead. Better feature set for the same price and much fewer reported problems.
 
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