ASRock CoreHT 252B Review
by Ganesh T S on September 2, 2011 3:45 AM EST- Posted in
- HTPC
- Intel
- ASRock
- Media Streamer
One of the main issues with Intel's integrated GPU solutions for HTPC users was the absence of 23.976 Hz refresh rate support. When Sandy Bridge was launched, it was discovered that the 23 Hz setting could be activated and made to function as intended if UAC was disabled. With v2372 drivers, the disabling of UAC became unnecessary.
While we don't get perfect 23.976 Hz yet, it is definitely much better than the earlier scenario. Though there are user reports of lip sync still being an issue (particularly when used with a projector), we were unable to corroborate this finding. Personally, I managed to watch two complete movies at their native refresh rate without losing lip sync in our test setup.
23.976 fps Video Playback (MPC-HC/EVR-CP) with 23Hz Refresh Rate Setting
24 fps Video Playback (MPC-HC/EVR-CP) with 24Hz Refresh Rate Setting
The 24 Hz refresh rate feature works as before. Unfortunately, the drifting in the refresh rates doesn't seem to average to 23.976 Hz in the first case. The player locks to 23.972 fps, which implies a skipped frame every 250s (~4 minutes). The scenario seems similar for other refresh rates.
Another aspect we found irritating with Intel's GPU control panel is the custom resolution section. Intel seems very reliant on EDID and doesn't allow the user to input any frequency not supported by the display. I recently got hold of a display (Sony KDL46EX720) to help test 3D as well as multiple refresh rates. Since the unit was sold in the US, it doesn't indicate PAL compatibility in its EDID information. I was able to play back PAL videos with matched refresh rates using the Vision 3D (NVIDIA GT 425M), but Intel's control panel wouldn't allow me to set up 50 Hz as the display refresh rate. It is possible that an EDID override might help, but we can't help complaining about Intel's control panel not being as user friendly as NVIDIA's.
In the next section, we will look at how the integrated GPU in the ASRock CoreHT 252B handles cadence detection and deinterlacing.
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DocJones - Friday, September 2, 2011 - link
I've been wanting to put together a media server with an i5 CPU just about down this line. I currently run Mezzmo as the server software since it does a pretty good job at transcribing video on the fly based on what device is requesting it.I wonder if this has enough juice to transcribe 1080p and send it over the wire to our media players, and if so... can it do more than one?
ganeshts - Friday, September 2, 2011 - link
For a server type situation, I would recommend a desktop chipset.However, the i5-2520M is very very capable.. Maybe you should ask Mezzmo whether they can take advantage of QuickSync?
DocJones - Friday, September 2, 2011 - link
i5 2405S better?http://ark.intel.com/products/55446/...he-2_50-GHz...
Something this form factor would be nice if it worked. Mezzmo folks pretty much say I need a true 4 core 8 thread CPU to perform transcoding on the fly. I find that hard to believe. Others have noted that a Intel Core 2 Quad Q8400 LGA775 'Yorkfield' 2.66GHz 4MB-cache while hot handles the job just fine.
They use ffmpeg so I don't think they support QuickSync right now.
ganeshts - Friday, September 2, 2011 - link
Being paid software, I think Mezzmo needs to pull up its socks and adopt QuickSync for its transcoding operations. I think they can afford to sign whatever NDAs are required for this purpose (Actually, I don't think they need any because Andrew Van Til (www.babgvant.com) has actually implemented QuickSync support in his DVRMSToolBox program).Please hound them about this. I am also personally interested in finding out whether QuickSync is flexible enough for media server software to take advantage of.
blckgrffn - Friday, September 2, 2011 - link
I would hope that this guy starts under $500, but seeing the prices on the Core HT100 at greater than $700, my enthusiasm is tempered a bit.icrf - Friday, September 2, 2011 - link
Agreed, for $500, I'd buy one.Since this is mostly laptop parts, what does a similarly spec'd laptop cost? No keyboard, touchpad, or screen saves some costs. What does this add that a laptop doesn't? A token remote control?
ganeshts - Friday, September 2, 2011 - link
Remote control + IR receiver and form factor combined with scale of manufacturing mean that the cost almost works out to be the same as that of a laptop.For many, a laptop can double up as a HTPC (even I used my notebook as a HTPC between 2005 and 2007), but PCs like these cater to those who need a quiet unobtrusive unit as part of the living room cabinet. Plus, this is a desktop replacement, i.e, you can schedule recordings with an external TV tuner when you are away from the home (or any other such usage scenario).
In the end, it is about horses for courses :)
cknobman - Friday, September 2, 2011 - link
ZBOX nano AD10cjs150 - Friday, September 2, 2011 - link
Initial reviews look very promising although probably best to get the bare bones version and kit out with own memory and an SSD.When available I am going to get one and play with it to see how well it works
icrf - Friday, September 2, 2011 - link
Agreed. It's likely less than half the price, and I can do without an optical drive. I plan to run Windows, so the Linux driver situation around AMD's video decoding hardware don't apply, either (assuming that hasn't been straightened out since I last read about it).Still, it is nice to have all that extra CPU power available for whatever the future brings. I'm just not sure it's going to be worth the several hundred dollars more they're likely going to be asking for it.
In any case, I'd still love to see a review here on the unit, comparing it to this one as a budget alternative. I am a big XBMC proponent (and Hulu Desktop), so I really liked seeing the detailed focus on it, something I'd like to see carried forward in future HTPC reviews.