Radeon R9 280X and Radeon 660M - video card comparison
Passmark - benchmark score Radeon R9 280X vs Radeon 660M
Radeon R9 280X
6012
Radeon 660M
6474
Radeon R9 280X
Radeon 660M
Architecture
GCN (2011−2017)
RDNA 2 (2020−2022)
GPU code name
Thaiti XTL
RDNA 2 Rembrandt
Market segment
Desktop
Laptop
Release date
October 2013
January 2022
Bus support
PCIe 3.0
-
Interface
PCIe 3.0 x16
PCIe 4.0 x8
Supplementary power connectors
1 x 6-pin + 1 x 8-pin
None
Boost clock speed
1000 MHz
1900 MHz
Floating-point performance
4,096 gflops
-
Manufacturing process technology
28 nm
6 nm
Number of transistors
4,313 million
13,100 million
Pipelines / CUDA cores
2048
384
Power consumption (TDP)
250 Watt
45 Watt
Texture fill rate
128.0
45.60
Memory type
GDDR5
System Shared
Maximum RAM amount
3 GB
System Shared
Memory bus width
384 Bit
System Shared
Memory clock speed
-
System Shared
Memory bandwidth
288 GB/s
-
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
No outputs
Eyefinity
+
-
HDMI
+
-
DisplayPort support
+
-
DirectX
DirectX® 12
12 (12_1)
Mantle
-
-
OpenCL
1.2
2.0
OpenGL
4.6
4.6
Shader Model
5.1
6.5
Vulkan
+
1.2
AppAcceleration
+
-
CrossFire
1
-
DDMA audio
+
-
Enduro
-
-
FreeSync
1
-
HD3D
+
-
LiquidVR
1
-
PowerTune
-
-
TressFX
1
-
TrueAudio
+
-
UVD
+
-
ZeroCore
-
-