Radeon HD 2900 XT and Radeon 780M - video card comparison
Passmark - benchmark score Radeon HD 2900 XT vs Radeon 780M
Radeon HD 2900 XT
679
Radeon 780M
7300
Radeon HD 2900 XT
Radeon 780M
Architecture
TeraScale (2005−2013)
RDNA 3
GPU code name
R600
Phoenix
Market segment
Desktop
Laptop
Release date
May 2007
January 2023
Interface
PCIe 1.0 x16
PCIe 4.0 x8
Supplementary power connectors
1x 6-pin + 1x 8-pin
None
Boost clock speed
-
3000 MHz
Core clock speed
743 MHz
1500 MHz
Floating-point performance
475.5 gflops
-
Manufacturing process technology
80 nm
4 nm
Number of transistors
720 million
25,390 million
Pipelines / CUDA cores
320
768
Power consumption (TDP)
215 Watt
54 Watt (35 - 54 Watt TGP)
Texture fill rate
11.89
139.2
Memory type
GDDR3
System Shared
Maximum RAM amount
512 MB
System Shared
Memory bus width
512 Bit
System Shared
Memory clock speed
1656 MHz
System Shared
Memory bandwidth
106.0 GB/s
-
Shared memory
-
+
Display Connectors
2x DVI, 1x S-Video
Portable Device Dependent
DirectX
10.0 (10_0)
12 Ultimate (12_2)
OpenCL
N/A
2.1
OpenGL
3.3
4.6
Shader Model
4.0
6.7
Vulkan
N/A
1.3