barts
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Radeon HD 6790 sneaks in at under $150, leaves reviewers wanting more for the money
As sure as snow in winter or sun in summer, AMD has yet another refresh to its graphics card portfolio this spring. The Radeon HD 6790 is only a couple of misplaced digits away from the far more illustrious HD 6970, but you should be able to tell the two apart by another, altogether more significant spec: the new mid-tier card retails at $149. Predictably, its performance offers no threat to AMD's single-GPU flagship, but the 6790's 840MHz graphics and shader clock speeds plus 1GB of GDDR5 running at an effective 4.2GHz data rate don't seem like anything to sniff at either. Reviewers agreed that it's AMD's slightly delayed answer to NVIDIA's GTX 460, and with the latter card exiting retail availability to make room for the (oddly enough) less powerful GTX 550 Ti, AMD's new solution looks set to be the better choice at the shared $149 price point. Alas, being limited to 800 Stream processors and 16 ROPs does expose the HD 6790 to being cannibalized by AMD's own Radeon HD 6850 (which can be had for sub-$150 if you're tolerant of rebates) and that turns out to be exactly what happens. A solid card, then, but one that would require an even lower price dip to make economic sense. Benchmarks await below. Read - Tech Report Read - AnandTech Read - Tom's Hardware Read - PC Perspective
AMD Radeon HD 6770 and 6750 spec sheets emerge, give NVIDIA cause for concern
Alright AMD, we still haven't forgiven you for burying the glorious name that was ATI, but if your next GPU refresh is as mighty as these numbers indicate, we might at least let you in from the doghouse. A slide detailing two flavors of the upcoming 40nm Barts chip has sprouted up from two independent sources online, and it shows some appreciable gains between generations. The new HD 67x0 cards appear manifestly speedier than their predecessors -- with faster clocks, more texture units, and more ROPs -- but the fun really gets going when you compare them to the HD 5870 and 5850, AMD's previous high-end cards. Memory bandwidth and pixel fillrate are identical between the HD 6750 and 5850, while the HD 6770 even manages to beat the formerly imperious 5870 in a couple of areas. Of course, this is all still unconfirmed information, but considering that Barts is only an "upper midrange" chip that's already stepping on the toes of last year's finest, we feel safe in expecting some pretty big things from the flagship Cayman silicon when it lands -- which will be soon if all these leaks and rumors are anything to go by. [Thanks, Vygantas]%Gallery-103368%
ATI leaks out Southern Islands codenames for next-gen GPUs
Um, oops? ATI's latest Catalyst driver release has dished out some info that we imagine the company didn't want to reveal quite yet. The names of some Southern Islands have been spotted -- Cayman and Antilles appear to be the flagship chips -- suggesting a refresh to the critically acclaimed Evergreen line of GPUs may not be far off. Rumors have been swirling for a while about ATI's reputed shift to island-based nomenclature, and while hard specs are nowhere to be found, we can see that the Red Team is planning an overhaul with no less than 10 new additions to its roster. Hardly unpredictable, but good to know that ATI has something to counter NVIDIA's heart-stealing GTX 460. [Thanks, Jack]
