AMD Radeon HD 7970 X2 vs AMD Radeon R9 M395X Mac Edition

Table of Contents

Graphics Processor

GPU model New Zealand Amethyst
Architecture GCN 1.0 GCN 3.0
Foundry TSMC TSMC
Manufacturing process 28 nm 28 nm
Number of transistors 4,313 million 5,000 million
Die size 352 mm² 366 mm²
GPU variant Amethyst XT

Graphics Card

Release date Aug 31st, 2012
Generation Southern Islands
Production End-of-life
Launch price 899 USD
Interface PCIe 3.0 x16
Reviews 37 in our database
Predecessor Northern Islands
Successor Sea Islands

Clocks

GPU clock 925 MHz 909 MHz
Memory clock 1375 MHz 5.5 Gbps effective 1365 MHz 5.5 Gbps effective

Memory Configuration

Memory size 3 GB 4 GB
Memory type GDDR5 GDDR5
Memory bus width 384 bit 256 bit
Bandwidth 264.0 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 768 KB 512 KB

Performance

Pixel rate 29.60 GPixel/s 29.09 GPixel/s
Texture rate 118.4 GTexel/s 116.4 GTexel/s
FP32 (float) performance 3.789 TFLOPS 3.723 TFLOPS
FP64 (double) performance 947.2 GFLOPS (1:4) 232.7 GFLOPS (1:16)
FP16 (half) performance 3.723 TFLOPS (1:1)

Dimensions & Outputs

Slot width Triple-slot MXM Module
Length 308 mm 12.1 inches
Width 137 mm 5.4 inches
Height 62 mm 2.4 inches
TDP 500 W 250 W
Suggested PSU 900 W
Outputs 2x DVI1x HDMI2x mini-DisplayPort No outputs
Power connectors 3x 8-pin None
Board number C386

API Support & Features

DirectX 12 (11_1) 12 (12_0)
OpenGL 4.6 4.6
OpenCL 1.2 2.0
Vulkan 1.2 1.2
Shader model 5.1 6.3

Other Features

Mobile graphics

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

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