Conclusion
First off, we want to congratulate AMD, Nvidia, and Intel for upping the ante over the past year and delivering some really useful hardware and software able to handle HD playback. Only a short while ago it seems that HD playback on an integrated IGP was a tradeoff at best and horrendously buggy at worst. This time around, things went so much more smoothly that we feel comfortable saying that Blu-ray playback with an IGP is viable, which is no small accomplishment. It certainly doesn't hurt that modern-day budget CPUs are worlds ahead of where they were a year ago.
With that out of the way, where do we begin? Let's start with a look at the GeForce 8200. While it's a competent platform, it's a dismal choice on which to base the purchase of a Blu-ray-equipped HTPC. Basic 1080p playback is viable, but don't ask the chipset to perform good noise reduction or it will stutter terribly. Indeed, if you choose an AMD CPU for your HTPC, the Radeon HD 3200/3300/4200 IGPs are the only real choice if video quality is a concern. The GeForce 8200's only appealing factor is its relatively low-power usage in comparison.
What about Intel solutions? The Intel G45 chipset does a lot of things well, but we're talking about HD playback here, and the GeForce 9300/9400 is simply the better solution provided you choose the right driver. Since these IGPs are very similarly priced, there's little reason to recommend the Intel G45, which is sad, because it really does represent an excellent effort on Intel's part. With properly-functioning inverse telecine/3:2 pulldown, it would have scored an easy tie with the 9300/9400. As it stands, however, the GeForce 9300/9400 gets the nod (at least until we see the G45 perform film-mode detection a little more consistently).
That brings us down to five contenders: the 780G/790GX/785G and the GeForce 9300/9400. We can further discriminate with the question: how serious are you about home-theater audio? If you are an audiophile, you should know that out of these remaining options, only the GeForce 9300/9400 can handle uncompressed eight-channel LPCM audio over HDMI 1.3. This means that if were hoping to use PowerDVD to decode Dolby TrueHD or DTS-HD MA and send the LPCM to your receiver, then the 780G/790GX/785G family of IGPs aren't for you.
However, before discounting them completely, we will say this: the 780G/790GX/785G IGPs can easily handle six-channel DD/DTS audio, and if you were planning on using a card like Asus' Xonar HDAV 1.3 anyway to bitstream those high-def formats, then this shouldn't be an issue for you. Once you consider this and take into account that 780G motherboards start at $60, which is about $40 less than their 785G and GeForce 9300 counterparts and almost enough to pay for a CPU, the 780G becomes a very attractive option. Perhaps it's the ideal choice for those of us who aren't serious enough about their home theater audio to upgrade our amps specifically to play back the latest audio formats.
However, if you do want the flexibility of eight-channel LPCM and the best integrated video quality possible, then you have to choose the GeForce 9300/9400. Just pay attention to the driver you're installing.
Either way, I can say without hesitation that if you choose either the 780G/790GX/785G or GeForce 9300/9400 IGPs for home-theater use, then you won't be disappointed. Frankly, the G45 even offers passable Blu-ray playback, and we're hoping that the film-mode detection inconsistency will likely be remedied over time.
On a final note, I would be remiss to avoid pointing out that any motherboard with a PCIe slot can be transformed into an HTPC powerhouse with the addition of an inexpensive discrete graphics card like the Radeon HD 4650. If you're looking for more than just HD video playback (the occasional game at 720p, perhaps) then the discrete route is well worth the extra money spent.
- Graphics,
- avivo ,
- purevideo ,
- clearvideo

"To do this, we will use the Blu-ray dick Sunshine, which utilizes the H.264 codec and features PIP commentary during playback."
lmao
So Intel's offering isn't good enough, and needs to come upto scratch to be able to perform with the competition. If AMD can be criticised in this way with some (not all) of their portfolio, so should Intel
Small error on page 2: GF9300/9400 is listed as IGP for AMD CPU's.
i cant find a bluray compatible player that ever looks good they always make bluray look like dvds
so i just end up ripping it to hard disk and then watch it with ffdshow enhancements. looks way better and i dont think you have to worry about all the gpu based stuff (or you can use DXVA on MPC-home theatre.) but i guess this article really applies to low end systems not quad core machines whith plenty of power to spare 
Nice article there Don
Good bit about the AMD AoHDMI issue: if you're that worried about top-quality 7.1 over HDMI you're probably better off with a Xonar anyway! 
Great to find this kind of article online but I'm confused, why would you need to enable noise reduction to play a Blue-ray disc on your 1080p screen - surely the Blue-ray disc is already encoded at the very best of picture quality?! (I have an 8200 chipset with the lovely AMD 4850e and was considering the purchase of a blue ray drive.)