Radeon HD 7950 Mac Edition and GeForce GTX 680 Mac Edition - video card comparison
Radeon HD 7950 Mac Edition
GeForce GTX 680 Mac Edition
Architecture
GCN 1.0 (2012−2020)
Kepler (2012−2018)
GPU code name
Tahiti
GK104
Market segment
Desktop
Desktop
Release date
March 2013
April 2013
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
2x 6-pin
2x 6-pin
Boost clock speed
-
1058 MHz
Core clock speed
800 MHz
1006 MHz
Floating-point performance
2,867 gflops
3,250 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
4,313 million
3,540 million
Pipelines / CUDA cores
1792
1536
Power consumption (TDP)
200 Watt
195 Watt
Texture fill rate
89.60
135.4
Memory type
GDDR5
GDDR5
Maximum RAM amount
3 GB
2 GB
Memory bus width
384 Bit
256 Bit
Memory clock speed
5000 MHz
6008 MHz
Memory bandwidth
240.0 GB/s
192.3 GB/s
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
2x DVI, 1x HDMI, 1x DisplayPort
HDMI
+
+
DirectX
12 (11_1)
12 (11_0)
CUDA
-
3.0
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
1.2.131
1.1.126