Radeon HD 7790 and Radeon RX 640 - video card comparison
Passmark - benchmark score Radeon HD 7790 vs Radeon RX 640
Radeon HD 7790
3183
Radeon RX 640
2020
Radeon HD 7790
Radeon RX 640
Architecture
GCN 2.0 (2013−2017)
Polaris (2016−2019)
GPU code name
Bonaire
Polaris 12
Market segment
Desktop
Laptop
Release date
March 2013
August 2019
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
1x 6-pin
None
Boost clock speed
-
1218 MHz
Core clock speed
1000 MHz
1218 MHz
Floating-point performance
1,792 gflops
-
Manufacturing process technology
28 nm
14 nm
Number of transistors
2,080 million
2,200 million
Pipelines / CUDA cores
896
640
Power consumption (TDP)
85 Watt
50 Watt
Texture fill rate
56.00
38.98
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
4 GB
Memory bus width
128 Bit
64 Bit
Memory clock speed
6000 MHz
6000 MHz
Memory bandwidth
96 GB/s
112.0 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
1x DVI, 1x HDMI, 1x DisplayPort
HDMI
+
+
DirectX
12 (12_0)
12 (12_0)
OpenCL
2.0
2.0
OpenGL
4.6
4.6
Shader Model
6.3
6.4
Vulkan
1.2.131
1.2.131
FreeSync
-
+