When the Radeon HD 4670 arrived on the scene several months ago everybody knew that it wasn't going to be about raw gaming power and high resolutions. Priced at less than a meal for two at your favourite restaurant and kitted out with a HDMI port, the card was undoubtedly an ideal candidate for the home theater PC scene. However, in the battle between NVIDIA and AMD to bring us graphics cards with the most features at the lowest price points, one intriguing feature was added to the Radeon HD 4670, a CrossFire connector. In many ways this seems little more than a gimmick, after all multi GPU setups are often considered the next step up for enthusiasts who already own the fastest cards. - Overclock3D

ATI Radeon HD 4670 512MB CrossFire Edition Review

Placing two low-end cards in CrossFire would surely just be a waste of money much better invested in a single mid-range card, wouldn't it? With the Radeon HD 4670 priced at around $75-85 in most places, snapping two up for a CrossFire configuration brings you into the $150 territory of the Radeon HD 4850. As we already know the Radeon HD 4850 card is certainly no slouch when it comes to gaming, and with 1GB models readily available, any potential advantage a pair of 512MB strong Radeon HD 4670 cards may have had in on the additional memory front is certainly negated, though it is also short done by an 128-bit memory bus.

Summing up the performance of a Radeon HD 4670 CrossFire config is certainly no easy task. In benchmarks such as Call of Duty 4 and 3DMark05 it performed admirably often beating the Radeon HD 4850 1GB card and in some cases even the factory overclocked Radeon HD 4870 graphics card series. In most other benchmarks the CrossFire configuration went head to head with the Radeon HD 4850 often winning at the lower resolutions but choking once high resolutions or texture filtering were applied. With 3DMark Vantage and Crysis on the other hand were a total disaster, with the CrossFire setup showing serious signs of strain.

In terms of value on our performance scale the Radeon HD 4670 setup positioned itself just above the Radeon HD 4850, but still quite a way below the Radeon HD 4870 and GeForce GTX 260 in most benchmarks. Add to this the inconvenience, additional noise and flakey support for CrossFire among game developers and it's pretty much safe to say that two Radeon HD 4670's in CrossFire are not the secret to budget gaming and a better investment would be in the Radeon HD 4850 card. Since both cost around the same, the CrossFire package or a single graphics card, the choice is easily made for the single GPU based solution.

However, if you already have a Radeon HD 4670 in your machine and are looking for a way to crank up the gaming performance at minimal cost, dropping in an extra Radeon HD 4670 will certainly achieve the desired effect and allow you to game alongside the big boys, well at least in a handful of titles.