AMD Radeon R9 295X2 vs AMD Radeon R9 M390X
GPU · Specs Compare
Graphics Card
Release Date
Apr 2014
May 2015
Generation
Volcanic Islands
Crystal System
Type
Desktop
Mobile
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1250 MHz
1250 MHz
Memory
Memory Size
4GB
4GB
Memory Type
GDDR5
GDDR5
Memory Bus
512bit
256bit
Bandwidth
320.0GB/s
160.0GB/s
Render Config
Compute Units
44
32
Shading Units
2816
2048
TMUs
176
128
ROPs
64
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
1024 KB
512 KB
Theoretical Performance
Pixel Rate
65.15 GPixel/s
23.14 GPixel/s
Texture Rate
179.2 GTexel/s
92.54 GTexel/s
FP32 (float)
5.733 TFLOPS
2.961 TFLOPS
FP64 (double)
716.7 GFLOPS
185.1 GFLOPS
FP16 (half)
—
2.961 TFLOPS
Graphics Processor
GPU Name
Vesuvius
Amethyst
GPU Variant
Vesuvius XT(215-0852022)
Amethyst XT
Architecture
GCN 2.0
GCN 3.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
6.2 billion
5 billion
Die Size
438 mm²
366 mm²
Board Design
TDP
500W
75W
Suggested PSU
900 W
—
Outputs
1x DVI4x mini-DisplayPort 1.2
No outputs
Power Connectors
2x 8-pin
None
Graphics Features
DirectX
12 (12_0)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.0
2.0
Vulkan
1.2
1.2
Shader Model
6.3
6.3
▲ Specs Compare
Data sourced from official specifications and benchmark tests.