Sapphire Radeon HD 4730 512 MB

Radeon HD 4730 graphics card will be represented by a Sapphire product. This card is not mentioned in the official AMD presentation; however, you can easily buy this solution today at a very attractive price point. Sapphire’s implementation of this graphics card looks very unusual for ATI solutions, because it is based on a blue PCB:

It uses the design of Radeon HD 4850 PCB and an RV770 (55 nm) graphics processor with 160 disabled universal processors (only 640 processors left). These processors work at 750 MHz frequency. There are only 32 texturing units out of initially available 40, and only half of raster units – a total of 8.

They also halved the bus between the GPU and the memory, which now is only 128 bit wide. 512 MB of GDDR5 video memory by Qimonda (IDGV51-05A1F1C-40X marking) work at 3600 MHz effective frequency.

GPU-Z utility didn’t quite recognize this graphics card, having reported the non-existing HD 4810:

The graphics card cooling system consists of an aluminum heatsink and a 92 mm fan. It turned out pretty efficient and didn’t let the GPU temperature rise beyond 70 °C. However, there is one negative thing to it: high level of generated noise. I have to add that the graphics card requires two additional six-pin power cables connected to it at all times.

ATI Radeon HD 4770 512 MB

Radeon HD 4770 512 MB graphics card will be represented by a reference AMD solution:

It is based on RV740 graphics processor manufactured with 40 nm process and working at 750 MHz frequency. The GPU configuration includes 640 processors, 32 texturing units and 8 raster units (ROPs).

The card is equipped with 512 MB of Qimonda video memory with the same exact marking ass the above described Sapphire card. Here are the complete specifications according to GPU-Z:

Radeon HD 4770 power consumption shouldn’t exceed 75 W, but the card is still equipped with an additional power supply connector. The cooler with a PWM-controlled fan is pretty quiet at work.