AMD Radeon HD 8990 OEM vs AMD Radeon RX 580 Mobile
GPU Specs Compare
Graphics Card
Release Date
Apr 2013
Apr 2017
Generation
Sea Islands
Mobility Radeon
Type
Desktop
Mobile
Bus Interface
PCIe 3.0 x16
MXM-B (3.0)
Clock Speeds
Base Clock
950 MHz
1000 MHz
Boost Clock
1000 MHz
1077 MHz
Memory Clock
1500 MHz
2000 MHz
Memory
Memory Size
3GB
8GB
Memory Type
GDDR5
GDDR5
Memory Bus
384bit
256bit
Bandwidth
288.0GB/s
256.0GB/s
Render Config
Compute Units
32
36
Shading Units
2048
2304
TMUs
128
144
ROPs
32
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
768 KB
2 MB
Theoretical Performance
Pixel Rate
32.00 GPixel/s
34.46 GPixel/s
Texture Rate
128.0 GTexel/s
155.1 GTexel/s
FP32 (float)
4.096 TFLOPS
4.963 TFLOPS
FP64 (double)
1024 GFLOPS
310.2 GFLOPS
FP16 (half)
-
4.963 TFLOPS
Graphics Processor
GPU Name
Malta
Polaris 20
GPU Variant
Malta XT(215-0849026)
Polaris 20M XT
Architecture
GCN 1.0
GCN 4.0
Foundry
TSMC
GlobalFoundries
Process Size
28 nm
14 nm
Transistors
4.313 billion
5.7 billion
Die Size
365 mm²
232 mm²
Board Design
TDP
375W
100W
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
📊 Benchmark
3DMark Time Spy
-
3,553
3DMark Time Spy Extreme
-
1,626