AMD Radeon HD 7950 Mac Edition vs AMD Radeon HD 6970
GPU · Specs Compare
Graphics Card
Release Date
Mar 2013
Dec 2010
Generation
Southern Islands
Northern Islands
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 2.0 x16
Clock Speeds
Memory Clock
1250 MHz
1375 MHz
Memory
Memory Size
3GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
384bit
256bit
Bandwidth
240.0GB/s
176.0GB/s
Render Config
Compute Units
28
24
Shading Units
1792
1536
TMUs
112
96
ROPs
32
32
L1 Cache
16 KB (per CU)
8 KB (per CU)
L2 Cache
768 KB
512 KB
Theoretical Performance
Pixel Rate
25.60 GPixel/s
28.16 GPixel/s
Texture Rate
89.60 GTexel/s
84.48 GTexel/s
FP32 (float)
2.867 TFLOPS
2.703 TFLOPS
FP64 (double)
716.8 GFLOPS
675.8 GFLOPS
Graphics Processor
GPU Name
Tahiti
Cayman
GPU Variant
Tahiti PRO(215-0821056)
Cayman XT(215-0807007)
Architecture
GCN 1.0
TeraScale 3
Foundry
TSMC
TSMC
Process Size
28 nm
40 nm
Transistors
4.313 billion
2.64 billion
Die Size
352 mm²
389 mm²
Board Design
TDP
200W
250W
Suggested PSU
550 W
600 W
Outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
2x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Power Connectors
2x 6-pin
1x 6-pin + 1x 8-pin
Graphics Features
DirectX
12 (11_1)
11.2 (11_0)
OpenGL
4.6
4.4
OpenCL
1.2
1.2
Vulkan
1.2
N/A
Shader Model
5.1
5.0
▲ Specs Compare
Data sourced from official specifications and benchmark tests.