Radeon HD 7640G and Radeon HD 2900 GT - video card comparison
Passmark - benchmark score Radeon HD 7640G vs Radeon HD 2900 GT
Radeon HD 7640G
473
Radeon HD 2900 GT
301
Radeon HD 7640G
Radeon HD 2900 GT
Architecture
Terascale 3 (2010−2013)
TeraScale (2005−2013)
GPU code name
Trinity
R600
Market segment
Laptop
Desktop
Release date
May 2012
November 2007
Interface
IGP
PCIe 1.0 x16
Supplementary power connectors
-
1x 8-pin
Boost clock speed
686 MHz
-
Core clock speed
497 MHz
601 MHz
Floating-point performance
-
288.48 gflops
Manufacturing process technology
32 nm
80 nm
Number of transistors
1,303 million
720 million
Pipelines / CUDA cores
256
240
Power consumption (TDP)
35 Watt
150 Watt
Texture fill rate
10.96
7.212
Memory type
System Shared
GDDR3
Maximum RAM amount
System Shared
256 MB
Memory bus width
System Shared
256 Bit
Memory clock speed
System Shared
1600 MHz
Memory bandwidth
-
51.2 GB/s
Shared memory
+
-
Display Connectors
No outputs
2x DVI, 1x S-Video
DirectX
11.2 (11_0)
10.0 (10_0)
OpenCL
1.2
N/A
OpenGL
4.4
3.3
Shader Model
5.0
4.0
Vulkan
N/A
N/A