Radeon R9 270X and Radeon HD 7850 - video card comparison
Passmark - benchmark score Radeon R9 270X vs Radeon HD 7850
Radeon R9 270X
5036
Radeon HD 7850
3976
Radeon R9 270X
Radeon HD 7850
Architecture
GCN (2011−2017)
GCN 1.0 (2012−2020)
GPU code name
Curacao XT
Pitcairn
Market segment
Desktop
Desktop
Release date
October 2013
March 2012
Bus support
PCIe 3.0
PCIe 2.1 x16
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
2 x 6-pin
1x 6-pin
Boost clock speed
1050 MHz
1000 MHz
Floating-point performance
2,688 gflops
1,761 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,800 million
2,800 million
Pipelines / CUDA cores
1280
1024
Power consumption (TDP)
180 Watt
130 Watt
Texture fill rate
84.00
55.04
Memory type
GDDR5
GDDR5
Maximum RAM amount
4 GB
2 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
-
1200 MHz
Memory bandwidth
179.2 GB/s
153.6 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x HDMI, 2x mini-DisplayPort
Eyefinity
+
1
HDMI
+
+
DisplayPort support
+
-
DirectX
DirectX® 12
12
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
+
+
AppAcceleration
+
-
CrossFire
1
1
DDMA audio
+
-
Enduro
-
-
FreeSync
1
1
HD3D
+
-
LiquidVR
1
-
PowerTune
-
-
TressFX
1
-
TrueAudio
+
-
UVD
+
-
ZeroCore
-
-