Radeon R9 280 and GeForce GT 640M - video card comparison
Passmark - benchmark score Radeon R9 280 vs GeForce GT 640M
Radeon R9 280
5726
GeForce GT 640M
946
Radeon R9 280
GeForce GT 640M
Architecture
GCN 1.0 (2012−2020)
Kepler (2012−2018)
GPU code name
Tahiti
N13P-GS
Market segment
Desktop
Laptop
Release date
March 2014
March 2012
Bus support
PCIe 3.0
PCI Express 2.0, PCI Express 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
645 MHz
Core clock speed
-
Up to 625 MHz
CUDA cores
-
384
Floating-point performance
3,344 gflops
480.0 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
32 Watt
Texture fill rate
104.5
Up to 20.0 billion/sec
Memory type
GDDR5
DDR3\GDDR5
Maximum RAM amount
3 GB
2 GB
Memory bus width
384 Bit
128bit
Memory clock speed
1250 MHz
1800 - 4000 MHz
Memory bandwidth
240 GB/s
Up to 64.0 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
Eyefinity
1
-
HDMI
+
+
HDCP
-
+
Maximum VGA resolution
-
Up to 2048x1536
DisplayPort support
-
-
DirectX
DirectX® 12
12 API
CUDA
-
+
Mantle
-
-
OpenCL
1.2
1.1
OpenGL
4.6
4.5
Shader Model
5.1
5.1
Vulkan
+
1.1.126
3D Blu-Ray
-
+
AppAcceleration
-
-
CrossFire
1
-
DDMA audio
+
-
Enduro
-
-
FreeSync
1
-
HD3D
+
-
LiquidVR
1
-
Optimus
-
+
PowerTune
-
-
TressFX
1
-
TrueAudio
+
-
UVD
+
-
ZeroCore
-
-