However, cards that use that kind of memory will be slower than others equipped with GDDR RAM (because of the different bandwidth 16 versus 32 bit). Each of the five instructions of a VLIW bundle has to be independent from the others and therefore the performance depends on the optimization of the driver.Ī speciality of the Radeon HD 4550 is the possibility to use ordinary DDR2 and DDR3 graphic memory (as a cheaper alternative to GDDR3). The stream processors are also called ALUs and are grouped in five-way VLIW units.
These cores do the graphic work of the shader- and pixel pipelines of older GPUs. The Mobility HD 4550 is based on the RV710 chip and features 80 stream processors (16 5-dimensional shader cores).
Demanding games like Crysis can only be played in low detail settings. The gaming performance of the ATI Mobility Radeon HD4550 lies under the desktop 4350 and therefore DirecX 9 games should run fluent in low-medium detail settings. Technically it lies between Mobility Radeon 45 (only the clockrate differentiates them). The ATI Mobilty Radeon HD 4550 from AMD is a DirectX 10.1 lower-class notebook graphics adapter.
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