Radeon RX 580 and Radeon HD 6450 - video card comparison
Passmark - benchmark score Radeon RX 580 vs Radeon HD 6450
Radeon RX 580
9140
Radeon HD 6450
203
Radeon RX 580
Radeon HD 6450
Architecture
Polaris (2016−2019)
TeraScale 2 (2009−2015)
GPU code name
Polaris 20
Caicos
Market segment
Desktop
Desktop
Release date
April 2017
April 2011
Bus support
-
PCIe 2.0 x8
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
1x 8-pin
None
Boost clock speed
1340 MHz
750 MHz
Core clock speed
1257 MHz
-
Floating-point performance
6,175 gflops
200.0 gflops
Manufacturing process technology
14 nm
40 nm
Number of transistors
5,700 million
370 million
Pipelines / CUDA cores
2304
160
Power consumption (TDP)
185 Watt
30 Watt
Texture fill rate
193.0
5.000
Memory type
GDDR5
GDDR5
Maximum RAM amount
8 GB
1 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
8000 MHz
800 MHz
Memory bandwidth
256.0 GB/s
25.6 GB/s
Memory bandwidth
-
8.5-12.8 GB/x (DDR3) or 25.6-28.8 GB/s (GDDR5)
Display Connectors
1x HDMI, 3x DisplayPort
1x DVI, 1x HDMI, 1x VGA
Eyefinity
-
1
Number of Eyefinity displays
-
4
HDMI
+
+
DisplayPort support
-
+
DirectX
12 (12_0)
DirectX® 11
Mantle
-
-
OpenCL
2.0
1.2
OpenGL
4.6
4.4
Shader Model
6.4
5.0
Vulkan
1.2.131
-
AppAcceleration
-
-
CrossFire
-
1
Enduro
-
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-