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AMD Radeon HD 7990 review

Serious AMD engineering, but is it too late to the ultra-enthusiast party?

Verdict

As effective as the cooling is, The AMD Radeon HD 7990 is never going to have the premium aesthetic of the GTX Titan. In graphics card terms, it looks like a super car - it's practically got alloys.

And if we take straight-line performance out of the equation and go for that experience angle, a multi-GPU card is never going to be able to compete against a simple, single-GPU card - especially one that's a little cheaper and only a bit slower in most cases.

Sadly, the HD 7990 is one of the flakiest cards we've tested in a long while. We were finally able to coax some impressive performance figures out of it, but only after a good long while of sometimes only having a single GPU turning up to the benchmarking party. This is no doubt down to the early drivers we've had to use for pre-release testing and not the hardware itself, but that's a plain reminder of the vagaries of multi-GPU gaming.

When you fire up a new game on your CrossFireX or SLI rig, you'll always be wondering whether one or other of your GPUs has gotten confused and wandered off somewhere else. As impressive a feat of engineering as this beast is, there are faster, smoother and cheaper graphics arrays available, and much better enthusiast experiences to be had elsewhere.

Tech Specs

Product TypeGraphic Card
Chipset ManufacturerAMD
Chipset ModelHD 7990
Chipset LineRadeon
Chipset SeriesHD 7000
DisplayPortYes
Maximum Resolution2560 x 1600
Brand NameGigabyte
Standard Memory6 GB
Host InterfacePCI Express 3.0
HDCP SupportedYes
Bus Width768 bit
Multi-GPU TechnologyCrossFireX
Digital SignalYes
Dual Link DVI SupportedYes
DVIYes
Number of DisplayPort Outputs4
Number of DVI Outputs1
Height126 mm
Memory TechnologyGDDR5 SDRAM
Form FactorPlug-in Card
Length320 mm
ManufacturerGIGABYTE Technology, Inc
Memory Speed6000 MHz
Product ModelGV-R799D5-6GD-B
Product NameHard-Core Gaming GV-R799D5-6GD-B Radeon HD 7990 Graphic Card
Processor Speed950 MHz
Product LineHard-Core Gaming
Manufacturer Part NumberGV-R799D5-6GD-B
Manufacturer Website Addresshttp://uk.giga-byte.com
Marketing Information

ATI Radeon HD 7990 Chipset

  • Integrated with the first 6GB GDDR5 memory and 768-bit memory interface
  • Support AMD Eyefinity™ & CrossFireX™ & Avivo™HD
  • Features Dual-link DVI-I / Mini Displayport*4
  • System power supply requirement: 750W (two 150W 8-pin PCI Express® connector recommended)
  • Powered by AMD Radeon HD 7990 GPU
Thickness40 mm
API SupportedDirectX 11.1, OpenGL 4.2