Radeon HD 6870 and Radeon HD 8790M - video card comparison
Passmark - benchmark score Radeon HD 6870 vs Radeon HD 8790M
Radeon HD 6870
2285
Radeon HD 8790M
1344
Radeon HD 6870
Radeon HD 8790M
Architecture
Terascale 2 (2009−2015)
GCN (2011−2017)
GPU code name
RV940 Barts
Mars XTX
Market segment
Desktop
Laptop
Release date
October 2010
November 2012
Bus support
PCIe 2.0 x16
-
Interface
PCIe 2.0 x16
MXM-A (3.0)
Supplementary power connectors
2x 6-pin
None
Boost clock speed
900 MHz
900 MHz
Core clock speed
-
850 MHz
Floating-point performance
2,016.0 gflops
691.2 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
1,700 million
950 million
Pipelines / CUDA cores
1120
384
Power consumption (TDP)
151 Watt
unknown
Texture fill rate
50.40
21.60
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
2 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
1050 MHz
4500 MHz
Memory bandwidth
134.4 GB/s
64 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
Eyefinity
1
-
HDMI
+
-
DisplayPort support
-
-
DirectX
DirectX® 11
12 (11_1)
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.4
4.6
Shader Model
5.0
5.1
Vulkan
-
1.2.131
AppAcceleration
-
-
CrossFire
1
-
Enduro
-
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-