Radeon HD 7690M XT and GeForce GT 640M LE - video card comparison
Passmark - benchmark score Radeon HD 7690M XT vs GeForce GT 640M LE
Radeon HD 7690M XT
1039
GeForce GT 640M LE
720
Radeon HD 7690M XT
GeForce GT 640M LE
Architecture
Terascale 2 (2009−2015)
Fermi / Kepler (2012)
GPU code name
Thames XTX
N13P-LP
Market segment
Laptop
Laptop
Release date
June 2011
March 2012
Bus support
-
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Core clock speed
725 MHz
Up to 500 MHz
CUDA cores
-
Up to 384
Floating-point performance
696.0 gflops
384.0 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
716 million
585 million
Pipelines / CUDA cores
480
384
Power consumption (TDP)
25 Watt
20 Watt
Texture fill rate
17.40
Up to 16.0 billion/sec
Memory type
GDDR5
DDR3\DDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
128 Bit
128bit
Memory clock speed
3600 MHz
1800 - 4000 MHz
Memory bandwidth
57.6 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
11.2 (11_0)
12 API
CUDA
-
+
OpenCL
1.2
1.1
OpenGL
4.4
4.5
Shader Model
5.0
5.1
Vulkan
N/A
N/A
3D Blu-Ray
-
+
Optimus
-
+