GeForce GTX 870M and Radeon HD 6970M Crossfire - video card comparison
GeForce GTX 870M
Radeon HD 6970M Crossfire
Architecture
Kepler (2012−2018)
Terascale 2 (2009−2015)
GPU code name
N15P-GT
Blackcomb XT
Market segment
Laptop
Laptop
Release date
March 2014
January 2011
Bus support
PCI Express 2.0, PCI Express 3.0
-
Interface
MXM-B (3.0)
-
Supplementary power connectors
None
-
SLI options
+
-
Boost clock speed
967 MHz
-
Core clock speed
941 MHz
680 MHz
CUDA cores
1344
-
Floating-point performance
2,599 gflops
-
Manufacturing process technology
28 nm
40 nm
Number of transistors
3,540 million
2x1700 Million
Pipelines / CUDA cores
1344
1920
Power consumption (TDP)
100 Watt
-
Texture fill rate
108.3
-
Memory type
GDDR5
GDDR5
Maximum RAM amount
6 GB
2x2 GB
Memory bus width
192 Bit
256 Bit
Memory clock speed
Up to 2500 MHz
900 MHz
Memory bandwidth
120.0 GB/s
-
Shared memory
-
-
Standard memory configuration
GDDR5
-
Display Connectors
No outputs
-
eDP 1.2 signal support
Up to 3840x2160
-
LVDS signal support
Up to 1920x1200
-
VGA аnalog display support
Up to 2048x1536
-
DisplayPort Multimode (DP++) support
Up to 3840x2160
-
HDCP content protection
+
-
HDMI
+
-
7.1 channel HD audio on HDMI
+
-
DirectX
12 (11_0)
11
CUDA
+
-
OpenCL
1.1
-
OpenGL
4.5
-
Shader Model
5.1
-
Vulkan
1.1.126
-
H.264, VC1, MPEG2 1080p video decoder
+
-
Optimus
+
-
TrueHD and DTS-HD audio bitstreaming
+
-