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Mobility Inherits Pros and Cons: Specifications Disclosed

There is hardly any need to talk about the Mobility RADEON X1600 XT micro-architecture in great detail, as it is principally the same compared to the desktop RADEON X1600 XT, so, we only briefly touch upon it, so that you could refresh your memory a little bit and recall what we are actually dealing with.

The RADEON X1600-series came to replace the RADEON X700 family of graphics chips in both desktop and mobile markets. The obvious advantage that the RADEON X1600 has over the predecessor is the Avivo technology support. Its main advantage in the notebook segment is hardware decoding of H.264 video. This feature may eventually allow users to watch one or two HD DVD or BD movies without the need to recharge their notebook battery. This might be a great thing for those who travel a lot and watch moving on the plane. Some other essential features of the Mobility RADEON X1600 are such 3D technologies as Shader Model 3.0, HDR and some others.

The RADEON X1600 sports 12 pixel shader processors, 5 vertex shader processors and only 4 texture mapping units (TMUs). While high clock-speeds and generally efficient architecture allow the part to show impressive results in applications loaded with shader operations, 4 TMUs greatly diminish the potential advantages of the solution over its rivals in many current games.

Another peculiarity of the ATI Mobility RADEON X1600 is Ultra-Threading Dispatch Processor that distributes pixel shader workload among the pixel processors and makes efficient use of pixel processors’ arithmetic logic units (ALUs). ATI says that this architecture helps to make the pixel processors achieve their 90% efficiency on any shader. The RADEON X1600 fully utilizes Ring Bus memory architecture that is 256-bit wide.

The 128-bit wide memory bus of the RADEON X1600 has been considered a bottleneck for the desktop solutions. However in the mobile segment it has turned into an evident benefit: with 128-bit memory bus the chip can be placed not only onto a special AXIOM module, but can be mounted directly onto the mainboard. Thanks to ATI’s CSP (chip scale packaging) technology that allows mounting memory directly onto the substrate with the graphics processor, the manufacturers can now save some space on the mainboard PCB. Such packaging also allows retaining pin-to-pin compatibility with previous generation designs, such as Mobility RADEON X700, which significantly improves market opportunities for the newcomer since it can be adapted for already shipping notebooks without much hassle.

Mobility RADEON X1600 with 128MB GDDR3 memory operates at 209MHz/270MHz (core/memory) clock-speeds in 2D mode and at 473/936MHz (core/memory) in 3D mode.

Based on our experience with the RADEON X1600 XT, we know that the card allows playing the latest games and its performance should be enough for a casual gamer. For those gamers who are familiar with the high framerate in the latest games, this accelerator will hardly be a good choice. The Mobility RADEON X1600 is slower than the desktop solution, that is why this product will not become a good desktop replacement (DTR) choice for gaming. But if you are an occasional gamer, can carry a relatively large laptop and are looking for the broadest feature-set, then a portable PC with Mobility RADEON X1600 has every chance to win your heart.

 
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