GeForce GTX 980 SLI Mobile and Radeon HD 8990 OEM - video card comparison
GeForce GTX 980 SLI Mobile
Radeon HD 8990 OEM
Architecture
Maxwell (2014−2018)
GCN 1.0 (2012−2020)
GPU code name
N16E-GXX SLI
Malta
Market segment
Laptop
Desktop
Release date
September 2015
April 2013
Interface
-
PCIe 3.0 x16
Supplementary power connectors
-
2x 8-pin
SLI options
+
-
Boost clock speed
1228 MHz
1000 MHz
Core clock speed
1126 MHz
950 MHz
Floating-point performance
-
2x 4,096 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
10400 Million
4,313 million
Pipelines / CUDA cores
4096
2048
Power consumption (TDP)
330 Watt
375 Watt
Texture fill rate
-
128.0
Memory type
GDDR5
GDDR5
Maximum RAM amount
2x 8 GB
3 GB
Memory bus width
256 Bit
384 Bit
Memory clock speed
3500 MHz
6000 MHz
Memory bandwidth
-
288.0 GB/s
Shared memory
-
-
Display Connectors
-
1x DVI, 4x mini-DisplayPort
G-SYNC support
+
-
DirectX
12_1
12 (11_1)
CUDA
+
-
OpenCL
-
1.2
OpenGL
-
4.6
Shader Model
-
5.1
Vulkan
-
1.2.131