Radeon HD 7640G and Radeon HD 2900 XT - video card comparison
Passmark - benchmark score Radeon HD 7640G vs Radeon HD 2900 XT
Radeon HD 7640G
473
Radeon HD 2900 XT
679
Radeon HD 7640G
Radeon HD 2900 XT
Architecture
Terascale 3 (2010−2013)
TeraScale (2005−2013)
GPU code name
Trinity
R600
Market segment
Laptop
Desktop
Release date
May 2012
May 2007
Interface
IGP
PCIe 1.0 x16
Supplementary power connectors
-
1x 6-pin + 1x 8-pin
Boost clock speed
686 MHz
-
Core clock speed
497 MHz
743 MHz
Floating-point performance
-
475.5 gflops
Manufacturing process technology
32 nm
80 nm
Number of transistors
1,303 million
720 million
Pipelines / CUDA cores
256
320
Power consumption (TDP)
35 Watt
215 Watt
Texture fill rate
10.96
11.89
Memory type
System Shared
GDDR3
Maximum RAM amount
System Shared
512 MB
Memory bus width
System Shared
512 Bit
Memory clock speed
System Shared
1656 MHz
Memory bandwidth
-
106.0 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