AMD Radeon R9 M295X vs AMD Radeon R9 M395X Mac Edition

Table of Contents

Graphics Processor

GPU model Amethyst Amethyst
GPU variant Amethyst XT Amethyst XT
Architecture GCN 3.0 GCN 3.0
Foundry TSMC TSMC
Manufacturing process 28 nm 28 nm
Number of transistors 5,000 million 5,000 million
Die size 366 mm² 366 mm²

Mobile graphics

Release date Nov 23rd, 2014 May 5th, 2015
Generation Crystal System (R9 M200) Crystal System (R9 M300)
Production End-of-life End-of-life
Interface MXM-B (3.0) MXM-B (3.0)
Predecessor Solar System Solar System
Successor Mobility Radeon Mobility Radeon

Clocks

GPU clock 723 MHz 909 MHz
Memory clock 1250 MHz 5 Gbps effective 1365 MHz 5.5 Gbps effective

Memory Configuration

Memory size 4 GB 4 GB
Memory type GDDR5 GDDR5
Memory bus width 256 bit 256 bit
Bandwidth 160.0 GB/s 174.7 GB/s

Render Configuration

Shading units 2048 2048
TMUs 128 128
ROPs 32 32
Compute units 32 32
Cache L1 16 KB (per CU) 16 KB (per CU)
Cache L2 512 KB 512 KB

Performance

Pixel rate 23.14 GPixel/s 29.09 GPixel/s
Texture rate 92.54 GTexel/s 116.4 GTexel/s
FP16 (half) performance 2.961 TFLOPS (1:1) 3.723 TFLOPS (1:1)
FP32 (float) performance 2.961 TFLOPS 3.723 TFLOPS
FP64 (double) performance 185.1 GFLOPS (1:16) 232.7 GFLOPS (1:16)

Dimensions & Outputs

Slot width MXM Module MXM Module
TDP 250 W 250 W
Outputs No outputs No outputs
Power connectors None None

API Support & 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

Other Features

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