The boards are very similar, they have almost the same chipset. The main difference would be that the 4BEA has the INTEL 845E-chipset while the 4G4A uses the 845G with integrated VGA from INTEL. Both can be had with HIGHPOINT-RAID-controller (4BEA-R and 4G4A+). Both boards are great overclockers.
As usual EPOX delivered very nice products with both boards.
Yesterday I finally got a my PC2-601BW-tower from KOOLANCE. Since I don't like onboard-VGA due to possible problems that might occur I chose the 4BEA-R instead of the 4G4A and a P4 1.6A. So, after the installation of the complete watercooling (also VGA, NB and 4HDDs) I surely wanted a decent OC with low temperatures and a minimum of noise while having a maximum of fun with that computer.
But what happened then still amazes me. The little P4 1.6 is simultanously doing PRIME95 and SISOFT SANDRA BURN-IN for about 4 hours now running the 1.6 at 2.64 with no errors whatsoever (I'm switching monitors all the time expecting that PRIME has stopped, but until now it didn't). CPU-voltage is 1.775 and CPU-temperatures vary from 32 to 35°C depending from where you read them (BIOS, KOOLANCE-probe or EPOX-monitoring-software). The system-temp never climbed over 30°C. And the KOOLANCE is only running in MODE1, which is some sort of whisper-mode. I just ordered fast RAM to be able to leave the 1:1-memory-ratio behind me and then the box should really fly.
So, this is my experience with the 4BEA-R so far. I love it.
The 4G4A should be able to do the same from what I read, but I haven't had the opportunity so far to play around with it. As far as I know the BIOS are identical in those settings that are relevant for overclocking. Anyway, I don't think that you can go wrong with either one of these boards.
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