Just over a week after AMD unleashed its powerful ATI Radeon HD 5870 to the world and subsequently the 5850, a forum member at Mymypc.com has posted several images and benchmark numbers of the upcoming HD 5750. Codenamed Juniper LE, this is AMD's first mainstream graphics processor in the ATI Radeon HD 5000 family and is reportedly set to replace the once high-end Radeon HD 4870 with a $150 price tag.

The alleged reference model has a relatively short board and sports a dual-slot design with a teardrop-shaped cooling system slapped on it. Like the 5800 series, it features DirectX 11 support, GDDR5 memory (but on a 128-bit bus and clocked at 1150MHz), and the same port arrangement – two DVI, one DisplayPort, and one HDMI. The card is also equipped with 1120 stream processors and a 700MHz core clock, according to GPU-Z.

In terms of performance, the new Radeon HD 5750 manages to beat both the HD 4850 and the GTS 250 when running 3DMark06 and 3DMark Vantage's synthetic tests – although by small margins. We'll of course have to reserve judgment until we can put this card to the test in real-world scenarios, but it seems the Radeon HD 5750 could give Nvidia's GeForce GTS 250 a run for its money when it launches (presumably) later this month.