Radeon HD 7990 and Radeon HD 2900 XT - video card comparison
Passmark - benchmark score Radeon HD 7990 vs Radeon HD 2900 XT
Radeon HD 7990
5732
Radeon HD 2900 XT
679
Radeon HD 7990
Radeon HD 2900 XT
Architecture
GCN 1.0 (2012−2020)
TeraScale (2005−2013)
GPU code name
Malta
R600
Market segment
Desktop
Desktop
Release date
April 2013
May 2007
Interface
PCIe 3.0 x16
PCIe 1.0 x16
Supplementary power connectors
2x 8-pin
1x 6-pin + 1x 8-pin
Boost clock speed
1000 MHz
-
Core clock speed
950 MHz
743 MHz
Floating-point performance
2x 4,096 gflops
475.5 gflops
Manufacturing process technology
28 nm
80 nm
Number of transistors
4,313 million
720 million
Pipelines / CUDA cores
2048
320
Power consumption (TDP)
375 Watt
215 Watt
Texture fill rate
128.0
11.89
Memory type
GDDR5
GDDR3
Maximum RAM amount
3 GB
512 MB
Memory bus width
384 Bit
512 Bit
Memory clock speed
6000 MHz
1656 MHz
Memory bandwidth
288.0 GB/s
106.0 GB/s
Display Connectors
1x DVI, 4x mini-DisplayPort
2x DVI, 1x S-Video
DirectX
12 (11_1)
10.0 (10_0)
OpenCL
1.2
N/A
OpenGL
4.6
3.3
Shader Model
5.1
4.0
Vulkan
1.2.131
N/A