AMD's Radeon HD 4670 is graphics are we highly recommend for anyone looking for the best card under $80 as AMD has further pushed back Nvidia especially in the mid-range graphics card market. Graphics companies need though some way to differentiate them selves from the standard reference card and that's exactly what Sapphire has done with the Radeon HD 4670 with 512MB of GDDR4.

The first difference between a reference Radeon HD 4670 and Sapphire's GDDR4 version is the massive fan covering almost the entire card as well as heatsink. This allows for not only incredibly effective cooling with the card running at very low and near ambient temperatures but also for it to run quietly as well with Sapphire rating it as under 20db. Nearly in audible over everything else going on and in a case dead quiet. This does make the card take up two slots instead of one but if that's not a problem for you then this is a great upgrade from a standard Radeon 4679.

Another major change is the fact that this card sports output from VGA, DVI, and HDMI giving you every output option possible. Onboard HDMI is especially good for those looking for a good home-theater PC although ATI's DVI-to-HDMI adapter works great it's nice to see this onboard the card and those with only a VGA input are also not left in the dust.

Additonal RAM heatsinks are featurd on the back of the graphics card which is another improvement over the standard reference card.

Of course though the major change here is that Sapphire has gone with GDDR4 memory instead of GDDR3 which gives it a 100MHz increase in over a normally 4670 in memory performance at 1.1GHz effect clockspeed. This may seem like a slight boost but keep in mind the card is also crippled by a 128-bit memory interface so faster memory should help with performance. The card features the same 320 stream processors as other 4670 cards running at 750MHz. The 4830 features 640 stream processors and 4850 and 4870 800 stream processors.

The bundle includes PowerDVD for playing back DVDs and Blu-Ray, Cyberlink's DVD Suite, various demos and screensavers on Ruby ROM, Sapphire sticker, and Crossfire connector if pairing two cards.

All the benefits of the 4000 series of cards from ATI is also here obviously: 2nd-gen 55nm, UVD2, and so on.