GeForce GT 640M LE and Radeon R6 (Kaveri) - video card comparison
Passmark - benchmark score GeForce GT 640M LE vs Radeon R6 (Kaveri)
GeForce GT 640M LE
720
Radeon R6 (Kaveri)
712
GeForce GT 640M LE
Radeon R6 (Kaveri)
Architecture
Fermi / Kepler (2012)
GCN 1.1 (2014)
GPU code name
N13P-LP
Kaveri
Market segment
Laptop
Laptop
Release date
March 2012
June 2014
Bus support
PCI Express 2.0, PCI Express 3.0
-
Interface
PCIe 2.0 x16
-
Boost clock speed
-
654 MHz
Core clock speed
Up to 500 MHz
533 MHz
CUDA cores
Up to 384
-
Floating-point performance
384.0 gflops
-
Manufacturing process technology
28 nm
28 nm
Number of transistors
585 million
2410 Million
Pipelines / CUDA cores
384
384
Power consumption (TDP)
20 Watt
-
Texture fill rate
Up to 16.0 billion/sec
-
Memory type
DDR3\DDR5
-
Maximum RAM amount
2 GB
-
Memory bus width
128bit
64/128 Bit
Memory clock speed
1800 - 4000 MHz
-
Memory bandwidth
Up to 28.8 GB/s
-
Shared memory
-
+
Display Connectors
No outputs
-
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
Up to 2048x1536
-
DirectX
12 API
12 (FL 12_0)
CUDA
+
-
OpenCL
1.1
-
OpenGL
4.5
-
Shader Model
5.1
-
Vulkan
N/A
-
3D Blu-Ray
+
-
Optimus
+
-