GeForce GTX 1080 Max-Q and Radeon HD 6990M Crossfire - video card comparison
GeForce GTX 1080 Max-Q
Radeon HD 6990M Crossfire
Architecture
Pascal (2016−2021)
Terascale 2 (2009−2015)
GPU code name
N17E-G3 Max-Q
Blackcomb XTX
Market segment
Laptop
Laptop
Release date
May 2017
July 2011
Interface
PCIe 3.0 x16
-
Supplementary power connectors
None
-
Boost clock speed
1278 - 1468 MHz
-
Core clock speed
1101 - 1290 MHz
715 MHz
Floating-point performance
7,516 gflops
-
Manufacturing process technology
16 nm
40 nm
Number of transistors
7,200 million
2x1700 Million
Pipelines / CUDA cores
2560
2240
Power consumption (TDP)
90 - 110 Watt
-
Texture fill rate
234.9
-
Memory type
GDDR5X
GDDR5
Maximum RAM amount
8 GB
2x2 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
10000 MHz
900 MHz
Memory bandwidth
320.3 GB/s
-
Shared memory
-
-
Display Connectors
No outputs
-
G-SYNC support
+
-
DirectX
12 (12_1)
11
CUDA
6.1
-
OpenCL
1.2
-
OpenGL
4.6
-
Shader Model
6.4
-
Vulkan
1.2.131
-
VR Ready
+
-