Radeon HD 4770 and GeForce GT 640M - video card comparison
Passmark - benchmark score Radeon HD 4770 vs GeForce GT 640M
Radeon HD 4770
935
GeForce GT 640M
943
Radeon HD 4770
GeForce GT 640M
Architecture
TeraScale (2005−2013)
Kepler (2012−2018)
GPU code name
RV740
N13P-GS
Market segment
Desktop
Laptop
Release date
April 2009
March 2012
Bus support
-
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
1x 6-pin
-
Boost clock speed
-
645 MHz
Core clock speed
750 MHz
Up to 625 MHz
CUDA cores
-
384
Floating-point performance
960.0 gflops
480.0 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
826 million
1,270 million
Pipelines / CUDA cores
640
384
Power consumption (TDP)
80 Watt
32 Watt
Texture fill rate
24.00
Up to 20.0 billion/sec
Memory type
GDDR5
DDR3\GDDR5
Maximum RAM amount
512 MB
2 GB
Memory bus width
128 Bit
128bit
Memory clock speed
3200 MHz
1800 - 4000 MHz
Memory bandwidth
51.2 GB/s
Up to 64.0 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x S-Video
No outputs
HDMI
-
+
HDCP
-
+
Maximum VGA resolution
-
Up to 2048x1536
DirectX
10.1 (10_1)
12 API
CUDA
-
+
OpenCL
1.1
1.1
OpenGL
3.3
4.5
Shader Model
4.1
5.1
Vulkan
N/A
1.1.126
3D Blu-Ray
-
+
Optimus
-
+