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AMD Radeon HD 7970 X2

New Zealand x2
Graphics Processor
2048 x2
Cores
128 x2
TMUs
32 x2
ROPs
3072 MB x2
Memory Size
GDDR5
Memory Type
384 bit x2
Bus Width
AMD Radeon HD 7970 X2 Photo AMD New Zealand Photo
The Radeon HD 7970 X2 was a enthusiast-class graphics card by AMD, launched in August 2012. Built on the 28 nm process, and based on the New Zealand graphics processor, the card supports DirectX 12.0. The New Zealand graphics processor is a large chip with a die area of 365 mm² and 4,313 million transistors. Radeon HD 7970 X2 combines two graphics processors to increase performance. It features 2048 shading units, 128 texture mapping units and 32 ROPs per GPU. AMD has placed 6,144 MB GDDR5 memory on the card, which are connected using a 384-bit memory interface per GPU (each GPU manages 3,072 MB). The GPU is operating at a frequency of 925 MHz, memory is running at 1375 MHz.
Being a dual-slot card, the AMD Radeon HD 7970 X2 draws power from 3x 8-pin power connectors, with power draw rated at 500 W maximum. Display outputs include: 1x DVI, 4x mini-DisplayPort. Radeon HD 7970 X2 is connected to the rest of the system using a PCI-Express 3.0 x16 interface. The card measures 292 mm in length, and features a dual-slot cooling solution. Its price at launch was 899 US Dollars.

Graphics Processor

GPU Name
New Zealand
Architecture
GCN 1.0
Process Size
28 nm
Transistors
4,313 million
Die Size
365 mm²

Graphics Card

Release Date
Aug 31st, 2012
Generation
Southern Islands
(HD 7900)
Production
End-of-life
Launch Price
899 USD
Bus Interface
PCIe 3.0 x16

Relative Performance

2%
3%
4%
5%
5%
6%
7%
9%
9%
10%
11%
11%
13%
13%
14%
15%
16%
16%
17%
18%
18%
19%
20%
22%
23%
23%
23%
23%
24%
24%
25%
27%
27%
28%
28%
28%
29%
29%
29%
29%
31%
31%
34%
34%
34%
36%
36%
37%
40%
41%
41%
42%
42%
44%
44%
44%
45%
47%
48%
49%
49%
49%
49%
53%
54%
55%
56%
56%
56%
57%
58%
58%
59%
64%
65%
67%
68%
68%
69%
71%
72%
74%
76%
77%
77%
85%
94%
95%
100%
Radeon HD 7970 X2
101%
102%
103%
105%
106%
106%
108%
108%
109%
110%
115%
118%
119%
119%
131%
134%
136%
146%
160%
166%
179%
179%
189%
221%
226%
247%
281%
Based on TPU review data: "Performance Summary" at 1920x1080
Performance estimated based on architecture, shader count and clocks.

Clock Speeds

GPU Clock
925 MHz
Memory Clock
1375 MHz
5500 MHz effective

Memory

Memory Size
3072 MB
Memory Type
GDDR5
Memory Bus
384 bit
Bandwidth
264.0 GB/s

Render Config

Shading Units
2048
TMUs
128
ROPs
32
Compute Units
32

Theoretical Performance

Pixel Rate
29.60 GPixel/s
Texture Rate
118.4 GTexel/s
FP32 (float) performance
3,789 GFLOPS
FP64 (double) performance
947.2 GFLOPS (1:4)

Board Design

Slot Width
Dual-slot
Length
11.5 inches
292 mm
TDP
500 W
Outputs
1x DVI
4x mini-DisplayPort
Power Connectors
3x 8-pin
Board Number
C386

Graphics Features

DirectX
12.0 (11_1)
OpenGL
4.5
OpenCL
1.2
Vulkan
1.1.77
Shader Model
5.1

Card Notes

2x Tahiti XT Cores.
2x Tahiti XT2 Cores. ARES II/IceQ X²

New Zealand GPU Notes

Chip Variant: Tahiti
Graphics/Compute: GFX6 (gfx600)
Display Core Engine: 6.0
Unified Video Decoder: 3.2
Video Compression Engine: 1.0

Exact Transistor Count: 4,312,711,873

New Zealand Chip Numbers:
Tahiti XT (215-0821060)
Tahiti XT2 (215-0821065)

Retail boards based on this design (9)

Name GPU Clock Memory Clock Other Changes
ASUS ROG ARES II 1100 MHz 1650 MHz 11.8 inches/300 mm, 2x DVI 4x DisplayPort
ASUS ROG ARES II Prototype 925 MHz 1375 MHz 11 inches/279 mm, 2x DVI 1x HDMI 1x DisplayPort
Club 3D HD 7990 925 MHz 1375 MHz 12.4 inches/315 mm, Triple-slot, 2x DVI 1x HDMI 2x mini-DisplayPort
Club 3D HD 7990 925 MHz 1375 MHz 12.126 inches/308 mm, Triple-slot, 2x DVI 1x HDMI 2x mini-DisplayPort
HIS HD 7970 X2 IceQ X² 1050 MHz 1500 MHz 12 inches/305 mm, Triple-slot
PowerColor Devil13 HD 7990 1000 MHz 1375 MHz 12.4 inches/315 mm, Triple-slot, 2x DVI 1x HDMI 2x mini-DisplayPort
PowerColor HD 7990 925 MHz 1375 MHz 12.4 inches/315 mm, Triple-slot, 2x DVI 1x HDMI 2x mini-DisplayPort
Sapphire ATOMIC HD 7990 925 MHz 1375 MHz 6x mini-DisplayPort
VTX3D HD 7990 925 MHz 1375 MHz 12.4 inches/315 mm, Triple-slot, 2x DVI 1x HDMI 2x mini-DisplayPort