Sapphire Radeon HD 4650 512MB OC
Examination:
The Sapphire Radeon HD 4650 512MB OC follows AMD's reference design for this graphics card, but the clock and memory frequencies are what separate this model from its competitors. The reference core and memory clock is 600MHz and 500MHz, respectively, but Sapphire Technology has this overclocked edition set to run at 650MHz for its RV730PRO core and 900MHz for the GDDR3 memory. The RV730PRO GPU shares similar features to other RV7XX GPUs in that it's built upon a 55nm process, supports UVD2, offers PowerPlay support, and is DirectX 10.1 / OpenGL 2.1 capable. The heatsink fan solution on this graphics card is small, only occupies a single slot, and doesn't cool the video memory, but it does get the job done.
The Radeon HD 4650 is able to get all of its power from the PCI Express x16 slot, so no external PCI-E power connector is needed for this graphics card. Along the top-edge of this graphics card you will find the two CrossFire connectors for supporting ATI's CrossFireX multi-GPU technology. The Catalyst Linux driver though only supports running two GPUs in CrossFire (ATI Radeon CrossFire On Linux). The 512MB GDDR3 memory on this graphics card is made up of Hynix H5RS5223CFA ICs, which should be capable of a nice overclock beyond Sapphire's rated frequencies.
Sapphire provides two dual-link DVI and one video output connector on the HD 4650 OC. Using the included adapters provide the VGA and HDMI connectivity where needed. This graphics card also has an integrated audio processor when using the HDMI interface. The opposite side of the graphics card shows the other four memory ICs and all of the mounting holes for the graphics card cooler.
Below is a picture comparing the Sapphire Radeon HD 4650 to the Sapphire Radeon HD 4670, which as you can see the two cards are very similar in their designs.