Radeon R5 M255 and Radeon HD 4670 - video card comparison
Passmark - benchmark score Radeon R5 M255 vs Radeon HD 4670
Radeon R5 M255
550
Radeon HD 4670
391
Radeon R5 M255
Radeon HD 4670
Architecture
GCN (2011−2017)
TeraScale (2005−2013)
GPU code name
Topaz Pro / Sun
RV730
Market segment
Laptop
Desktop
Release date
May 2014
September 2008
Bus support
PCIe 3.0 x8
-
Interface
PCIe 3.0 x8
PCIe 2.0 x16
Supplementary power connectors
-
None
Boost clock speed
940 MHz
-
Compute units
5
-
Core clock speed
940 MHz
750 MHz
Floating-point performance
721.9 gflops
480.0 gflops
Manufacturing process technology
28 nm
55 nm
Number of transistors
1,550 million
514 million
Pipelines / CUDA cores
320
320
Power consumption (TDP)
-
59 Watt
Texture fill rate
22.56
24.00
Memory type
DDR3
GDDR3
Maximum RAM amount
4 GB
512 MB
Memory bus width
64 Bit
128 Bit
Memory clock speed
1000 MHz
2000 MHz
Memory bandwidth
16 GB/s
32 GB/s
Shared memory
-
-
Display Connectors
No outputs
2x DVI, 1x S-Video
Eyefinity
+
-
DirectX
DirectX® 11
10.1 (10_1)
Mantle
+
-
OpenCL
Not Listed
1.1
OpenGL
4.4
3.3
Shader Model
6.3
4.1
Vulkan
-
N/A
AppAcceleration
+
-
DualGraphics
1
-
Enduro
-
-
HD3D
+
-
PowerTune
+
-
Switchable graphics
1
-
TrueAudio
-
-
ZeroCore
+
-