GeForce GTX 970M and Radeon HD 6990M Crossfire - video card comparison
GeForce GTX 970M
Radeon HD 6990M Crossfire
Architecture
Maxwell (2014−2018)
Terascale 2 (2009−2015)
GPU code name
GM204
Blackcomb XTX
Market segment
Laptop
Laptop
Release date
October 2014
July 2011
Bus support
PCI Express 3.0
-
Interface
MXM-B (3.0)
-
Supplementary power connectors
None
-
SLI options
+
-
Boost clock speed
1038 MHz
-
Core clock speed
924 MHz
715 MHz
CUDA cores
1280
-
Floating-point performance
2,657 gflops
-
Manufacturing process technology
28 nm
40 nm
Number of transistors
5,200 million
2x1700 Million
Pipelines / CUDA cores
1280
2240
Power consumption (TDP)
unknown
-
Texture fill rate
83.04
-
Memory type
GDDR5
GDDR5
Maximum RAM amount
6 GB
2x2 GB
Memory bus width
192 Bit
256 Bit
Memory clock speed
2500 MHz
900 MHz
Memory bandwidth
120 GB/s
-
Shared memory
-
-
Display Connectors
No outputs
-
VGA аnalog display support
+
-
DisplayPort Multimode (DP++) support
+
-
HDMI
+
-
G-SYNC support
+
-
DirectX
12 (12_1)
11
CUDA
+
-
OpenCL
1.1
-
OpenGL
4.5
-
Shader Model
6.4
-
Vulkan
1.1.126
-
Ansel
+
-
BatteryBoost
+
-
GameStream
+
-
GameWorks
+
-
GeForce ShadowPlay
+
-
GPU Boost
2.0
-
H.264, VC1, MPEG2 1080p video decoder
+
-
Optimus
+
-