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HD Media Player Chipsets
This page gives some technical background to the history of Media Player chipsets.
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The first chipset to be capable of decoding 1080p full-HD video was the 863x from a company called Sigma Designs. The Sigma 863x spawned a whole series of Media Players from early 2008 onwards. It was these players that kick-started the Media Player revolution. Manufacturers released machines with modified versions of the original Sigma firmware, so the Sigma 863x machines are not identical. There are differences in all areas, from user interface to marginal decoding performance. The Sigma 863x is clocked at 300Mhz.
The Sigma 863x has now been superseded by newer chipsets, aimed squarely at the growing Media Player market. Limitations of the Sigma 8635 such as slow user interface, limited DTS support, and just general lack of power have been addressed in a new generation of chips released in 2009.
The Realtek 1283 / 1073 chipset range appeared in mid 2009 and is clocked between the old Sigma 863x and the newer Sigma 864x/865x. The Realteks use one CPU, clocked at 400mhz. A flood of cheap Realtek based Media Players arrived through 2009. The 1073 is the same as the 1283 with some DTV functions stripped out, they are otherwise exactly the same chip providing the same performance in a Media Player. The only hardware performance difference amongst the Realteks is that the Xtreamer is clocked at 450mhz rather than 400mhz.
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There are Realtek 1073DA and 1073DD variations, with the DA version being an early release that is unable to downmix DTS. The DA variation is common among the cheaper players. We differentiate between the versions in our detailed specifications and comparison table.
The Realtek chipsets provide fast and reliable performance at a low cost. These players can cope with all Media files you are likely to come across with only abnormally high reframe files or some HD audio formats providing any problems. It was revealed in February 2010 that neither the 1073DA, 1073DD, or the 1283 can passthrough (bitstream) Dolby TrueHD or DTS-HD MA.
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In early 2010 Realtek started shipping enhanced + versions of it's chips. The 1073DD+ and 1283+ can both passthrough DTS-HD MA and Dolby TrueHD. The number of players using these chipsets is currently limited but we expect it to grow. All players on our site that have both 'DD' and 'DD+' variations in circulation are marked DD(+). More info on Realtek 'DD+' players is here
The Realtek RTD 1085 / 1185 is the successor to the 1073 / 1283 series and will run at 500Mhz. It will support Gigabit Ethernet and full HD-Audio. Realtek are also launching a version without network support called the RTD 1055. Expect players with these chips to start shipping in late 2010.
Sigma released both Sigma 864x series and Sigma 865x series chipsets in late 2009, with the first player featuring the 8643 (Popcorn Hour C-200) shipping in September 2009, and the first 8655 players (WDTV Live / Eminent EM7075) arriving in October 2009. The Sigma 864x and the 865x are related and similar chips with the 864x being the more powerful.
The Sigma 864x contains a 667mhz CPU, a 333mhz IPU (image processing unit), 2* HD video decoding, and three 333mhz Audio DSPs. The 8643 and 8642 are identical except that the 8642 is a Macrovision version allowing for the ability to play copy protected DVD / Blu-Ray.
The Sigma 8646 and 8647 are versions of the 864x expected in late 2010 with improved performance (800Mhz) and working Gigabit LAN.
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The Sigma 865x uses a 500mhz CPU, a 333mhz IPU, 1.25x HD video decoding, and one 333mhz Audio DSP. All the 865x variations are similar, with the 8655 being marginally the most powerful. The 8655 uses 64bit RAM whereas the 8653 uses 32bit and the 8655 has six video DACs whereas the 8653 has four. The only benchmarks we could find give identical scores so real world performance is likely near identical. The 8654 and 8652 are copy protection (Macrovision) enabled versions of each allowing for the ability to play copy protected DVD / Blu-Ray. One notable deficiency in all the Sigma chips is the inability to play RMVB files.
The Sigma 8656 is an upgraded chip coming in late 2010 and offering hardware 3D acceleration.
The AmLogic 8626H (Apollo) chipset was launched in early 2010 as a budget alternative to the Realtek 1073. It runs at 400mhz and appears to be at least equal in decoding performance to the Realtek chips whilst being even cheaper. The 8626H's main drawbacks are that it does not support lossless HD-Audio or WMV / VC-1. The Amlogic 8613 is an older Amlogic chipset used in the WDTV Mini and is unable to decode 1080P.
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In early April 2010 HDX are launching a player based on an ARM 11 series chip. The HDX-Bone uses an ARM1176JZ(F)-S ARM chip as previously found in car entertainment systems, the Apple iPhone, and Zune HD. This chip is clocked at 500mhz so should offer performance on a par with the established names. ARM 1176, Wiki ARM 11 Series
Intel has long promised to release it's own range ('CE') of Media Player chipsets. The first player announced with such a chipset was the Conceptronic Yuixx in mid 2009, although almost a year later there is no sign of the Yuixx. What we do have however is the promise of Google TV using the 'Intelo Atom CE4100'. It tanspires that this is a combination of an Intel Atom CPU and Intel GMA500 graphics, with the GMA500 running at 200Mhz. We are yet to be convinced of how this will stack up against the existing dedicated Media Player chipsets.
Other chipsets that we've come across but have little information on are MStar D7M26L/6M68/SC9800/TCC8900 and Amlogic7226/7228/8618.
External Links
• Realtek 1073/1283 product line
• Sigma Designs - Sigma 863x web pages
• Sigma Designs - Sigma 864x product PDF
• Sigma Designs - Sigma 865x product PDF
• Amlogic general products page
• ARM - 11 Series information
• Intel - Atom CE4100 SoC 'Intelo' information
Page last updated: 15-Jul-10
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Comments There are 14 comments
July 14, 2010 - 14:12
Do you have any reference on mediaplayers based in Broadcom Chipsets like the BCM 7405 or STMicroelectronics like ST7105? June 30, 2010 - 10:04
Guys, I got a question... Can someone confirm on this? How do I know if the chipset inside is RTD1283 DD+ ? July 10, 2010 - 22:37
Hi Mito, Xtreamer = 1283+ Chipset May 07, 2010 - 08:06
Hi guys, June 16, 2010 - 17:27
I have owned many players and the Sigma ones produce the best picture. popcorn, HDI Dune or dvico. I have a HDI dune and it the best of the lot i have owned. thanks April 21, 2010 - 16:34
Do you have any information about the alleged inability of Realtek chips to deal with 23.976fps video playback? Several user forums report video stuttering for Realtek-based mediaplayers when it comes to 23.976fps contents (that is to say almost everything). Thank you for your attention. May 13, 2010 - 19:01
This appears to be the case, known as the "41 second hiccup". April 14, 2010 - 04:01
It would be more complete if we can find AMLogic 8626H chipset (Amlogic7226/7228/8613/8618), MStar 6M68 & Mp4/PMP SC9800, tcc8900 info here. March 07, 2010 - 18:09
can Realtek 1283XX chip passthrough Dolby TrueHD or DTS-HD MA like xtreamer is saying that xtreamer pro can do does anybody know somthing about this new chip March 25, 2010 - 15:41
Nobody really knows. Xtreamer claim it can but then Xtreamer have claimed many things only for them not to be true. December 21, 2009 - 08:28
A new mediaplayer, MSI Movie Station HD1000 October 30, 2009 - 07:47
One of features that are unique in RealTek RTD1283 is the recording capability for PVR application. October 30, 2009 - 13:56
Fair enough, but irrelevant to the Media Players on this site! October 24, 2009 - 07:52
nice article does the realtek come with an sdk and directfb Leave a Comment
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