AMD Radeon R9 M395 Mac Edition vs AMD Radeon HD 8990 OEM
GPU · Specs Compare
Graphics Card
Release Date
May 2015
Apr 2013
Generation
Crystal System
Sea Islands
Type
Mobile
Desktop
Bus Interface
MXM-B (3.0)
PCIe 3.0 x16
Clock Speeds
Memory Clock
1365 MHz
1500 MHz
Base Clock
—
950 MHz
Boost Clock
—
1000 MHz
Memory
Memory Size
2GB
3GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
384bit
Bandwidth
174.7GB/s
288.0GB/s
Render Config
Compute Units
28
32
Shading Units
1792
2048
TMUs
112
128
ROPs
32
32
L1 Cache
—
16 KB (per CU)
L2 Cache
—
768 KB
Theoretical Performance
Pixel Rate
26.69 GPixel/s
32.00 GPixel/s
Texture Rate
93.41 GTexel/s
128.0 GTexel/s
FP32 (float)
2.989 TFLOPS
4.096 TFLOPS
FP64 (double)
373.6 GFLOPS
1024 GFLOPS
Graphics Processor
GPU Name
Amethyst
Malta
GPU Variant
Amethyst PRO(216-0872004)
Malta XT(215-0849026)
Architecture
GCN 3.0
GCN 1.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
5 billion
4.313 billion
Die Size
366 mm²
365 mm²
Board Design
TDP
250W
375W
Outputs
No outputs
1x DVI4x mini-DisplayPort 1.2
Power Connectors
None
2x 8-pin
Suggested PSU
—
750 W
Graphics Features
DirectX
12 (12_0)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
2.0
1.2
Vulkan
1.2
1.2
Shader Model
6.3
5.1
▲ Specs Compare
Data sourced from official specifications and benchmark tests.