Radeon HD 8690M and GeForce GT 640M LE - video card comparison
Passmark - benchmark score Radeon HD 8690M vs GeForce GT 640M LE
Radeon HD 8690M
1014
GeForce GT 640M LE
720
Radeon HD 8690M
GeForce GT 640M LE
Architecture
GCN (2011−2017)
Fermi / Kepler (2012)
GPU code name
Sun
N13P-LP
Market segment
Laptop
Laptop
Release date
November 2012
March 2012
Bus support
-
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x8
PCIe 2.0 x16
Boost clock speed
825 MHz
-
Core clock speed
775 MHz
Up to 500 MHz
CUDA cores
-
Up to 384
Floating-point performance
528.0 gflops
384.0 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
690 million
585 million
Pipelines / CUDA cores
384
384
Power consumption (TDP)
-
20 Watt
Texture fill rate
16.50
Up to 16.0 billion/sec
Memory type
GDDR5
DDR3\DDR5
Maximum RAM amount
1 GB
2 GB
Memory bus width
64 Bit
128bit
Memory clock speed
4500 MHz
1800 - 4000 MHz
Memory bandwidth
32 GB/s
Up to 28.8 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
HDMI
-
+
HDCP
-
+
Maximum VGA resolution
-
Up to 2048x1536
DirectX
12 (11_1)
12 API
CUDA
-
+
OpenCL
1.2
1.1
OpenGL
4.6
4.5
Shader Model
5.1
5.1
Vulkan
1.2.131
N/A
3D Blu-Ray
-
+
Optimus
-
+