Radeon HD 7850 and Radeon HD 6450 - video card comparison
Passmark - benchmark score Radeon HD 7850 vs Radeon HD 6450
Radeon HD 7850
3976
Radeon HD 6450
203
Radeon HD 7850
Radeon HD 6450
Architecture
GCN 1.0 (2012−2020)
TeraScale 2 (2009−2015)
GPU code name
Pitcairn
Caicos
Market segment
Desktop
Desktop
Release date
March 2012
April 2011
Bus support
PCIe 2.1 x16
PCIe 2.0 x8
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
1x 6-pin
None
Boost clock speed
1000 MHz
750 MHz
Floating-point performance
1,761 gflops
200.0 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
2,800 million
370 million
Pipelines / CUDA cores
1024
160
Power consumption (TDP)
130 Watt
30 Watt
Texture fill rate
55.04
5.000
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
1 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
1200 MHz
800 MHz
Memory bandwidth
153.6 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 DVI, 1x HDMI, 2x mini-DisplayPort
1x DVI, 1x HDMI, 1x VGA
Eyefinity
1
1
Number of Eyefinity displays
-
4
HDMI
+
+
DisplayPort support
-
+
DirectX
12
DirectX® 11
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.6
4.4
Shader Model
5.1
5.0
Vulkan
+
-
AppAcceleration
-
-
CrossFire
1
1
Enduro
-
-
FreeSync
1
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-