While the launch of AMD's flagship Radeon HD 5800 series architecture and graphics boards look to have set the tone for the remainder of the year most likely, it's already very much apparent that their ATI graphics division haven't been allowed to rest on their laurels despite being the first to market with DirectX 11 capable parts. Instead, the company are pushing hard to bring DirectX 11 functionality to lower price points, and today sees them do just that, with the launch of two new boards and another new GPU (codenamed "Juniper") with an eye towards the mainstream and lower-end of the performance graphics market. These boards come under the Radeon HD 5700 series banner, and thanks to AIB partner Sapphire Elite Bastards been able to take a look at both the Radeon HD 5770 and Radeon HD 5750 to see what they have to offer.
Leading the line for this particular architecture is the Radeon HD 5770, which makes use of a fully functional core to deliver 800 Stream Processors and a core clock speed of 850MHz, giving 1.36 TeraFLOPs of computing power. This is matched up with 1GB of GDDR5 memory clocked at 1200MHz, while the board promises a maximum power consumption of 108 Watts, with power usage dropping to just 18 Watts at idle.
The Radeon HD 5750 on the other hand finds itself using a reduced core configuration with a reduced Stream Processor and texture unit count to make use of this GPU's built-in redundancy. This leaves the Radeon HD 5750 with 720 Stream Processors from nine SIMD units, while four texture units are disabled alongside this reduction to give 36 in total. The GPU core here is clocked at just 700MHz, although this configuration does survive with all sixteen ROPs intact, while its 1GB of GDDR5 memory is clocked only slightly lower than the Radeon HD 5770 at 1150MHz. This board boasts a maximum power output of 86 Watts, with a 16 Watt stated idle power consumption level.
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