Radeon R9 270X and Radeon HD 4890 - video card comparison
Passmark - benchmark score Radeon R9 270X vs Radeon HD 4890
Radeon R9 270X
5036
Radeon HD 4890
1552
Radeon R9 270X
Radeon HD 4890
Architecture
GCN (2011−2017)
TeraScale (2005−2013)
GPU code name
Curacao XT
RV790
Market segment
Desktop
Desktop
Release date
October 2013
April 2009
Bus support
PCIe 3.0
-
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
2 x 6-pin
2x 6-pin
Boost clock speed
1050 MHz
-
Core clock speed
-
850 MHz
Floating-point performance
2,688 gflops
1,360.0 gflops
Manufacturing process technology
28 nm
55 nm
Number of transistors
2,800 million
959 million
Pipelines / CUDA cores
1280
800
Power consumption (TDP)
180 Watt
190 Watt
Texture fill rate
84.00
34.00
Memory type
GDDR5
GDDR5
Maximum RAM amount
4 GB
1 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
-
3900 MHz
Memory bandwidth
179.2 GB/s
124.8 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
2x DVI, 1x S-Video
Eyefinity
+
-
HDMI
+
-
DisplayPort support
+
-
DirectX
DirectX® 12
10.1 (10_1)
Mantle
-
-
OpenCL
1.2
1.1
OpenGL
4.6
3.3
Shader Model
5.1
4.1
Vulkan
+
N/A
AppAcceleration
+
-
CrossFire
1
-
DDMA audio
+
-
Enduro
-
-
FreeSync
1
-
HD3D
+
-
LiquidVR
1
-
PowerTune
-
-
TressFX
1
-
TrueAudio
+
-
UVD
+
-
ZeroCore
-
-