Radeon R9 280 and GeForce GT 650M Mac Edition - video card comparison
Radeon R9 280
GeForce GT 650M Mac Edition
Architecture
GCN 1.0 (2012−2020)
Kepler (2012−2018)
GPU code name
Tahiti
GK107
Market segment
Desktop
Desktop
Release date
March 2014
July 2012
Bus support
PCIe 3.0
-
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
1 x 6-pin + 1 x 8-pin
-
Boost clock speed
933 MHz
-
Core clock speed
-
900 MHz
Floating-point performance
3,344 gflops
691.2 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
4,313 million
1,270 million
Pipelines / CUDA cores
1792
384
Power consumption (TDP)
200 Watt
45 Watt
Texture fill rate
104.5
28.80
Memory type
GDDR5
GDDR5
Maximum RAM amount
3 GB
512 MB
Memory bus width
384 Bit
128 Bit
Memory clock speed
1250 MHz
5016 MHz
Memory bandwidth
240 GB/s
80.26 GB/s
Display Connectors
2x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
Eyefinity
1
-
HDMI
+
-
DisplayPort support
-
-
DirectX
DirectX® 12
12 (11_0)
CUDA
-
3.0
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
+
1.1.126
AppAcceleration
-
-
CrossFire
1
-
DDMA audio
+
-
Enduro
-
-
FreeSync
1
-
HD3D
+
-
LiquidVR
1
-
PowerTune
-
-
TressFX
1
-
TrueAudio
+
-
UVD
+
-
ZeroCore
-
-