AMD Radeon R9 M390 Mac Edition vs AMD Radeon R9 290X
GPU Specs Compare
Graphics Card
Release Date
May 2015
Oct 2013
Generation
Crystal System
Volcanic Islands
Type
Mobile
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1365 MHz
1250 MHz
Memory
Memory Size
2GB
4GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
512bit
Bandwidth
174.7GB/s
320.0GB/s
Render Config
Compute Units
16
44
Shading Units
1024
2816
TMUs
64
176
ROPs
32
64
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
1024 KB
Theoretical Performance
Pixel Rate
30.66 GPixel/s
64.00 GPixel/s
Texture Rate
61.31 GTexel/s
176.0 GTexel/s
FP32 (float)
1.962 TFLOPS
5.632 TFLOPS
FP64 (double)
122.6 GFLOPS
704.0 GFLOPS
Graphics Processor
GPU Name
Pitcairn
Hawaii
GPU Variant
Pitcairn PRO(215-0828062)
Hawaii XT(215-0852000)
Architecture
GCN 1.0
GCN 2.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
2.8 billion
6.2 billion
Die Size
212 mm²
438 mm²
Board Design
TDP
80W
290W
Outputs
No outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
None
1x 6-pin + 1x 8-pin
Suggested PSU
-
600 W
Graphics Features
DirectX
12 (11_1)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
1.2
2.1
Vulkan
1.2
1.2.170
Shader Model
5.1
6.5