PowerColor LCS HD 7970

AX7970-3GBD5-W2DH

Graphics Processor

Tahiti

Cores

2048

TMUs

128

ROPs

Memory Size

3 GB

Memory Type

GDDR5

Bus Width

384 bit

GPU

Graphics Processor

GPU Name: Tahiti

GPU Variant: Tahiti XT
(215-0821060)

Architecture: GCN 1.0

Foundry: TSMC

Process Size: 28 nm

Transistors: 4,313 million

Density: 12.3M / mm²

Die Size: 352 mm²

Graphics Card

Release Date: ~~Dec 22nd, 2011~~
Jan 31st, 2012

Availability: Jan 9th, 2012

Generation: Southern Islands
(HD 7900)

Predecessor: Northern Islands

Successor: Sea Islands

Production: End-of-life

Bus Interface: PCIe 3.0 x16

Clock Speeds

GPU Clock: ~~925 MHz~~
1050 MHz (+14%)

Memory Clock: ~~1375 MHz~~
1425 MHz (+4%)
~~5.5 Gbps effective~~
5.7 Gbps effective

Memory

Memory Size: 3 GB

Memory Type: GDDR5

Memory Bus: 384 bit

Bandwidth: ~~264.0 GB/s~~
273.6 GB/s

Render Config

Shading Units: 2048

TMUs: 128

ROPs: 32

Compute Units: 32

L1 Cache: 16 KB (per CU)

L2 Cache: 768 KB

Theoretical Performance

Pixel Rate: ~~29.60 GPixel/s~~
33.60 GPixel/s

Texture Rate: ~~118.4 GTexel/s~~
134.4 GTexel/s

FP32 (float): ~~3.789 TFLOPS~~
4.301 TFLOPS

FP64 (double): ~~947.2 GFLOPS~~
1,075 GFLOPS (1:4)

Board Design

Slot Width: ~~Dual-slot~~
Single-slot

Length: ~~275 mm~~
285 mm
~~10.8 inches~~
11.2 inches

TDP: 250 W

Suggested PSU: 600 W

Outputs: 1x DVI
1x HDMI 1.4a
2x mini-DisplayPort 1.2

Power Connectors: 1x 6-pin + 1x 8-pin

Board Number: 109-C38637-00

Graphics Features

DirectX: 12 (11_1)

OpenGL: 4.6

OpenCL: 2.1 (1.2)

Vulkan: 1.2.170

Shader Model: 6.5 (5.1)

Tahiti GPU Notes

Generation: Southern Islands
Desktop Variant: New Zealand / Malta
Graphics/Compute: GFX6 (gfx600)
Display Core Engine: 6.0
Unified Video Decoder: 3.2
Video Compression Engine: 1.0
CLRX: GCN 1.0

Exact Transistor Count: 4,312,711,873

Latest Drivers:
Windows XP / 8:
Catalyst Software Suite 14.4

Windows Vista :
Catalyst Software Suite 13.12

Windows 7:
32-bit: Radeon Software: Adrenalin Edition 18.9.3
64-bit: AMD Software: Adrenalin Edition 22.6.1

Windows 8.1:
32-bit: Radeon Software: Crimson ReLive Edition 16.12.2 / 17.1.2
64-bit: Radeon Software: Crimson ReLive Edition 17.4.4 / 17.7.1

Windows 10:
32-bit: Radeon Software: Adrenalin Edition 18.9.3
64-bit: AMD Software: Adrenalin Edition 22.6.1

Other retail boards based on this design (48)

Name	GPU Clock	Memory Clock	Other Changes
AFOX HD 7970	925 MHz	1375 MHz
AMD Radeon HD 7970	925 MHz	1375 MHz
ASUS HD 7970	925 MHz	1375 MHz
ASUS HD 7970 DirectCU II	925 MHz	1375 MHz	279 mm/11 inches, Triple-slot, 2x DVI 4x DisplayPort
ASUS HD 7970 DirectCU II TOP	1000 MHz	1400 MHz	279 mm/11 inches, Triple-slot, 2x DVI 4x DisplayPort
Club 3D HD 7970	925 MHz	1375 MHz
Club 3D HD 7970 '13Series	925 MHz	1375 MHz
Club 3D HD 7970 royalKing	975 MHz	1375 MHz	268 mm/10.6 inches, 2x DVI 1x HDMI 2x mini-DisplayPort
Club 3D HD 7970 royalQueen	925 MHz	1375 MHz	268 mm/10.6 inches, 2x DVI 1x HDMI 2x mini-DisplayPort
Diamond HD 7970	925 MHz	1375 MHz
Diamond HD 7970 Double Diamond Edition	1025 MHz	1450 MHz
Digital Alliance HD 7970	925 MHz	1375 MHz
GIGABYTE HD 7970	925 MHz	1375 MHz	285 mm/11.2 inches
GIGABYTE HD 7970 SOC	1080 MHz	1375 MHz	303 mm/11.9 inches
GIGABYTE HD 7970 WindForce 3X OC	1000 MHz	1375 MHz	285 mm/11.2 inches
HIS HD 7970	925 MHz	1375 MHz	293 mm/11.5 inches
HIS HD 7970 IceQ X2	925 MHz	1375 MHz	311 mm/12.2 inches
HIS HD 7970 IceQ X2 Turbo	1050 MHz	1400 MHz	311 mm/12.2 inches
HIS HD 7970 IceQ X2 Turbo X	1120 MHz	1400 MHz	311 mm/12.2 inches
MSI HD 7970	925 MHz	1375 MHz
MSI HD 7970 Lightning	1070 MHz	1400 MHz	305 mm/12 inches, 2x DVI 4x mini-DisplayPort
MSI HD 7970 OC	1010 MHz	1375 MHz
MSI HD 7970 Power Edition	925 MHz	1375 MHz	305 mm/12 inches, 2x DVI 4x mini-DisplayPort
MSI HD 7970 TwinFrozr III BE	925 MHz	1375 MHz	261 mm/10.3 inches
MSI HD 7970 TwinFrozr III BE OC	1000 MHz	1375 MHz	261 mm/10.3 inches
PowerColor HD 7970	925 MHz	1375 MHz
PowerColor HD 7970 V2	925 MHz	1375 MHz	285 mm/11.2 inches
PowerColor HD 7970 V3	925 MHz	1375 MHz	265 mm/10.4 inches, 2x DVI 1x HDMI 2x mini-DisplayPort
PowerColor LCS HD 7970	1050 MHz	1425 MHz	285 mm/11.2 inches, Single-slot
PowerColor PCS+ HD 7970 Vortex II	1100 MHz	1425 MHz	285 mm/11.2 inches, 2x DVI 1x HDMI 2x mini-DisplayPort
Sapphire HD 7970	925 MHz	1375 MHz
Sapphire HD 7970 Black Diamond 6 GB	925 MHz	1375 MHz	6 GB
Sapphire HD 7970 Black Diamond OC 6 GB	1000 MHz	1450 MHz	6 GB
Sapphire HD 7970 Dual-X	925 MHz	1375 MHz	280 mm/11 inches, 2x DVI 1x HDMI 1x DisplayPort
Sapphire HD 7970 Dual-X	925 MHz	1375 MHz	280 mm/11 inches
Sapphire HD 7970 OC	950 MHz	1425 MHz	280 mm/11 inches
Sapphire HD 7970 OC Boost	950 MHz	1450 MHz	280 mm/11 inches, 2x DVI 1x HDMI 1x DisplayPort
Triplex Parasouls HD 7970	925 MHz	1375 MHz
VisionTek HD 7970	925 MHz	1375 MHz
VTX3D HD 7970	925 MHz	1375 MHz
VTX3D HD 7970 X-Edition	1050 MHz	1425 MHz
XFX Double D HD 7970	925 MHz	1375 MHz	236 mm/9.3 inches, 2x DVI 1x HDMI 2x mini-DisplayPort
XFX Double D HD 7970	925 MHz	1375 MHz
XFX Double D HD 7970 Black Edition	1000 MHz	1425 MHz	2x DVI 1x HDMI 2x mini-DisplayPort
XFX HD 7970	925 MHz	1375 MHz
XFX HD 7970 Black Edition	1000 MHz	1425 MHz
Yeston HD 7970	925 MHz	1375 MHz	2x DVI 1x HDMI 2x DisplayPort
Zalman HD 7970	925 MHz	1375 MHz