AMD Radeon HD 7990 review

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

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Game on?

Ah, but what of performance? Given everything AMD has said about making a desirable card, offering the best experience above all other objectives, the performance is pretty damn impressive for a single-PCB/multi-GPU card.

AMD Radeon HD 7990

The first and perhaps most important thing to say is that it beats the GTX 690 and GTX Titan in our performance metrics almost across the board. The only place where Nvidia held sway was in the Batman: Arkham City test, where Nvidia generally performs better.

Even more impressive is the fact that it stays above both the Nvidia cards in terms of the minimum recorded frame rate, too - and that's always a good indicator of how smooth a gaming experience you're going to get out of your rig.

What this card doesn't do is beat a CrossFireX pairing of twin HD 7970 GHz edition cards. That setup is over £150 (about AU$235, US$225) cheaper, making the HD 7990 a bit of a tough sell. That's why we had all the talk from Devon Nekechuk about not going for the utilitarian option - if you're after sheer performance, that CrossFireX pairing wins.

Where they fall down is experience - when pushed to their limits, a pair of HD 7970 GHz cards make one hell of a racket - but they're blisteringly quick and smoother than this HD 7990. So, this HD 7990 doesn't win the performance battle.


Peak platform power draw
100 per cent GPU: Watts: Lower is better

AMD HD 7990: 615
NVIDIA GTX 690: 528
2X AMD HD 7970 GHZ: 700

DirectX 11 gaming performance
Batman: Arkham City: Frames per second: Higher is better

AMD HD 7990: 103
NVIDIA GTX 690: 109
2X AMD HD 7970 GHZ: 99

Crysis 3: Frames per second: Higher is better
AMD HD 7990: 48
NVIDIA GTX 690: 42
2X AMD HD 7970 GHZ: 55

DirectX 11 tessellation performance
Heaven: Frames per second: Higher is better

AMD HD 7990: 43
NVIDIA GTX 690: 42
2X AMD HD 7970 GHZ: 47

DiRT Showdown: Frames per second: Higher is better
AMD HD 7990: 116
NVIDIA GTX 690: 66
2X AMD HD 7970 GHZ: 117

Max Payne 3: Frames per second: Higher is better
AMD HD 7990: 57
NVIDIA GTX 690: 54
2X AMD HD 7970 GHZ: 58


Tech Specs

Product TypeGraphic Card
Chipset ManufacturerAMD
Chipset ModelHD 7990
Chipset LineRadeon
Chipset SeriesHD 7000
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
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
Product LineHard-Core Gaming
Manufacturer Part NumberGV-R799D5-6GD-B
Manufacturer Website Address
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