Radeon HD 7990 and Radeon HD 7640G - video card comparison
Passmark - benchmark score Radeon HD 7990 vs Radeon HD 7640G
Radeon HD 7990
5732
Radeon HD 7640G
473
Radeon HD 7990
Radeon HD 7640G
Architecture
GCN 1.0 (2012−2020)
Terascale 3 (2010−2013)
GPU code name
Malta
Trinity
Market segment
Desktop
Laptop
Release date
April 2013
May 2012
Interface
PCIe 3.0 x16
IGP
Supplementary power connectors
2x 8-pin
-
Boost clock speed
1000 MHz
686 MHz
Core clock speed
950 MHz
497 MHz
Floating-point performance
2x 4,096 gflops
-
Manufacturing process technology
28 nm
32 nm
Number of transistors
4,313 million
1,303 million
Pipelines / CUDA cores
2048
256
Power consumption (TDP)
375 Watt
35 Watt
Texture fill rate
128.0
10.96
Memory type
GDDR5
System Shared
Maximum RAM amount
3 GB
System Shared
Memory bus width
384 Bit
System Shared
Memory clock speed
6000 MHz
System Shared
Memory bandwidth
288.0 GB/s
-
Shared memory
-
+
Display Connectors
1x DVI, 4x mini-DisplayPort
No outputs
DirectX
12 (11_1)
11.2 (11_0)
OpenCL
1.2
1.2
OpenGL
4.6
4.4
Shader Model
5.1
5.0
Vulkan
1.2.131
N/A