Radeon HD 7990 and GeForce GTX 780 6 GB - video card comparison
Radeon HD 7990
GeForce GTX 780 6 GB
Architecture
GCN 1.0 (2012−2020)
Kepler (2012−2018)
GPU code name
Malta
GK110B
Market segment
Desktop
Desktop
Release date
April 2013
September 2013
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
2x 8-pin
1x 6-pin + 1x 8-pin
Boost clock speed
1000 MHz
902 MHz
Core clock speed
950 MHz
863 MHz
Floating-point performance
2x 4,096 gflops
4,156 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
4,313 million
7,080 million
Pipelines / CUDA cores
2048
2304
Power consumption (TDP)
375 Watt
250 Watt
Texture fill rate
128.0
173.2
Memory type
GDDR5
GDDR5
Maximum RAM amount
3 GB
6 GB
Memory bus width
384 Bit
384 Bit
Memory clock speed
6000 MHz
6008 MHz
Memory bandwidth
288.0 GB/s
288.4 GB/s
Display Connectors
1x DVI, 4x mini-DisplayPort
2x DVI, 1x HDMI, 1x DisplayPort
HDMI
-
+
DirectX
12 (11_1)
12 (11_1)
CUDA
-
3.5
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
1.2.131
1.1.126