Radeon HD 7990 and Radeon E8950 - video card comparison
Radeon HD 7990
Radeon E8950
Architecture
GCN 1.0 (2012−2020)
GCN 3.0 (2014−2017)
GPU code name
Malta
Amethyst
Market segment
Desktop
Desktop
Release date
April 2013
September 2015
Interface
PCIe 3.0 x16
MXM-B (3.0)
Supplementary power connectors
2x 8-pin
None
Boost clock speed
1000 MHz
1000 MHz
Core clock speed
950 MHz
735 MHz
Floating-point performance
2x 4,096 gflops
4,096 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
4,313 million
5,000 million
Pipelines / CUDA cores
2048
2048
Power consumption (TDP)
375 Watt
95 Watt
Texture fill rate
128.0
128.0
Memory type
GDDR5
GDDR5
Maximum RAM amount
3 GB
8 GB
Memory bus width
384 Bit
256 Bit
Memory clock speed
6000 MHz
6000 MHz
Memory bandwidth
288.0 GB/s
192.0 GB/s
Display Connectors
1x DVI, 4x mini-DisplayPort
No outputs
DirectX
12 (11_1)
12 (12_0)
OpenCL
1.2
2.0
OpenGL
4.6
4.6
Shader Model
5.1
6.3
Vulkan
1.2.131
1.2.131