Radeon HD 7970 and GeForce GTX 850M - video card comparison
Passmark - benchmark score Radeon HD 7970 vs GeForce GTX 850M
Radeon HD 7970
5405
GeForce GTX 850M
2591
Radeon HD 7970
GeForce GTX 850M
Architecture
GCN (2011−2017)
Maxwell (2014−2018)
GPU code name
Tahiti XT
N15P-GT
Market segment
Desktop
Laptop
Release date
December 2011
March 2014
Bus support
PCIe 2.1 x16
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
1x 6-pin + 1x 8-pin
-
SLI options
-
+
Boost clock speed
925 MHz
-
Core clock speed
-
Up to 936 MHz
CUDA cores
-
640
Floating-point performance
3,789 gflops
1,155 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
4,313 million
1,870 million
Pipelines / CUDA cores
2048
640
Power consumption (TDP)
300 Watt
45 Watt
Texture fill rate
118.4
36.08
Memory type
GDDR5
DDR3, GDDR5
Maximum RAM amount
6 GB
4 GB
Memory bus width
384 Bit
128 Bit
Memory clock speed
1375 MHz
Up to 2500 MHz
Memory bandwidth
264 GB/s
80.0 GB/s
Shared memory
-
-
Standard memory configuration
-
DDR3 or GDDR5
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
eDP 1.2 signal support
-
Up to 3840x2160
LVDS signal support
-
Up to 1920x1200
Eyefinity
+
-
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
-
+
DisplayPort support
-
-
DirectX
DirectX® 11
12 (11_0)
CUDA
-
+
Mantle
-
-
OpenCL
1.2
1.1
OpenGL
4.6
4.5
Shader Model
5.1
5.1
Vulkan
-
1.1.126
Ansel
-
+
AppAcceleration
-
-
CrossFire
1
-
Enduro
-
-
FreeSync
1
-
H.264, VC1, MPEG2 1080p video decoder
-
+
HD3D
-
-
Optimus
-
+
PowerTune
-
-
TrueAudio
-
-
TrueHD and DTS-HD audio bitstreaming
-
+
ZeroCore
-
-