Radeon RX 480 and Radeon HD 6870 - video card comparison
Passmark - benchmark score Radeon RX 480 vs Radeon HD 6870
Radeon RX 480
8883
Radeon HD 6870
2285
Radeon RX 480
Radeon HD 6870
Architecture
Polaris (2016−2019)
Terascale 2 (2009−2015)
GPU code name
Polaris 10 Ellesmere
RV940 Barts
Market segment
Desktop
Desktop
Release date
June 2016
October 2010
Bus support
n/a
PCIe 2.0 x16
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
1x 6-pin
2x 6-pin
Bridgeless CrossFire
1
-
Boost clock speed
1266 MHz
900 MHz
Compute units
36
-
Core clock speed
1120 MHz
-
Floating-point performance
5,834 gflops
2,016.0 gflops
Manufacturing process technology
14 nm
40 nm
Number of transistors
5,700 million
1,700 million
Pipelines / CUDA cores
2304
1120
Power consumption (TDP)
150 Watt
151 Watt
Texture fill rate
182.3
50.40
Memory type
GDDR5
GDDR5
Maximum RAM amount
8 GB
1 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
8000 MHz
1050 MHz
Memory bandwidth
224 GB/s
134.4 GB/s
Shared memory
-
-
Display Connectors
1x HDMI, 3x DisplayPort
2x DVI, 1x HDMI, 2x mini-DisplayPort
Eyefinity
1
1
HDMI
2.0
+
DisplayPort support
1.4HDR
-
DirectX
DirectX® 12
DirectX® 11
Mantle
n/a
-
OpenCL
2.0
1.2
OpenGL
4.5
4.4
Shader Model
6.4
5.0
Vulkan
+
-
AppAcceleration
n/a
-
CrossFire
1
1
Enduro
n/a
-
FreeSync
+
-
FRTC
1
-
HD3D
n/a
-
LiquidVR
1
-
PowerTune
+
-
TressFX
1
-
TrueAudio
n/a
-
UVD
+
-
VCE
+
-
ZeroCore
+
-