AMD Radeon HD 7970 GHz Edition Video Card Review



Product: AMD Radeon HD 7970 GHz Edition
Company: AMD
Author: James Prior
Editor: Charles Oliver
Date: June 21st, 2012

Specifications

AMD Radeon HD 7970 GHz Edition Specifications:

  • 28nm Tahiti XT2 GPU using GCN
  • 2048 Stream Processors / 32 Compute Units
  • 4.3Bn transistors
  • 1GHz Engine Clock / 1.05GHz Boost
  • 1500MHz (6Gbps) 3GB GDDR5 RAM
  • 384-bit Memory Bus
  • 288GB/s memory bandwidth
  • 128 Texture Units
  • 32 ROPS
  • 4.3TFLOPS SP / 1.08 TFLOPS DP
  • DVI-DL + HDMI 1.4a (Fast HDMI supported) & 2 DisplayPort 1.2 outputs
  • DirectX 11.1 / OpenCL 1.2 / OpenGL 4.2 / C++ AMP
  • <3W idle (ZeroCore Power) / 250W typ. board power (PowerTune limit 300W)
  • $499USD SEP

Our test platform is an detailed below:

Test Platform

Component Specification
Mainboard ASUS P8P67 WS Revolution
Processor Core i7-2600K [4.5GHz]
Graphics Card AMD Radeon HD 7970 GHz Edition
  AMD Radeon HD 7970
  2x4GB Crucial DDR3-1333 @ DDR3-1600 9-9-9-25 2T
Audio Realtek ALC892
PSU Corsair HX850
Case CoolerMaster HAF X w/Adt'l 200mm Top Exhaust
Storage Drives Corsair F120 + Seagate 7200.12 1TB
Heatsink/Fan Noctua NH-D14
Display 3x Dell P2210H
Operating System Windows 7 64-bit Ultimate SP1
Driver Catalyst 12.7b

Product Specification Comparison

  HD 7970 HD 7970 GHz Edition
SEP (USD) $479 $499
Engine Clock 925MHz 1GHz / 1.05GHz Boost
Cores 2048 2048
Architecture Tahiti GCN Tahiti GCN
Memory Capacity 3GB 3GB
Memory Speed 1375MHz / 5.5Gbps QDR 1500MHz / 6Gbps QDR
Bus Width 384-bit 384-bit
Power [Idle/Avg Game/Limit] <3W / 250W /300W <3W / 250W /300W

One of the first things we wanted to find out was 'can you CrossFireX a GHz Edition and a normal 7970?', so both went into the chassis and we installed the drivers. AMD is well known for their greater flexibility in multi-GPU supported configurations, but the combination of boost and non-boost might be stretching things. Rather to our surprise, we got the 'Enable CrossfireX' pop up, but then an error message - insufficient Crossfire connectors installed! So we upped from one to two, and voila! CrossFireX between GHz Edition and non-GHz Edition Radeon HD 7970s. Sweet.