AMD Radeon HD 7990 vs AMD Radeon RX 550X Mobile
GPU Specs Compare
Graphics Card
Release Date
Apr 2013
Apr 2018
Generation
Southern Islands
Mobility Radeon
Type
Desktop
Mobile
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x8
Clock Speeds
Base Clock
950 MHz
1100 MHz
Boost Clock
1000 MHz
1176 MHz
Memory Clock
1500 MHz
1500 MHz
Memory
Memory Size
3GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
384bit
64bit
Bandwidth
288.0GB/s
48.00GB/s
Render Config
Compute Units
32
10
Shading Units
2048
640
TMUs
128
40
ROPs
32
16
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
768 KB
512 KB
Theoretical Performance
Pixel Rate
32.00 GPixel/s
18.82 GPixel/s
Texture Rate
128.0 GTexel/s
47.04 GTexel/s
FP32 (float)
4.096 TFLOPS
1.505 TFLOPS
FP64 (double)
1024 GFLOPS
94.08 GFLOPS
FP16 (half)
-
1.505 TFLOPS
Graphics Processor
GPU Name
Malta
Polaris 23
GPU Variant
Malta XT(215-0849026)
Polaris 23 MXT
Architecture
GCN 1.0
GCN 4.0
Foundry
TSMC
GlobalFoundries
Process Size
28 nm
14 nm
Transistors
4.313 billion
2.2 billion
Die Size
365 mm²
103 mm²
Board Design
TDP
375W
50W
Suggested PSU
750 W
-
Outputs
1x DVI4x mini-DisplayPort 1.2
No outputs
Power Connectors
2x 8-pin
None
Graphics Features
DirectX
12 (11_1)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
1.2
2.1
Vulkan
1.2
1.2
Shader Model
5.1
6.4