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

Table of Contents

Graphics Processor

GPU model Tahiti Amethyst
GPU variant Tahiti XT2 (215-0821065) Amethyst XT
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

Graphics Card

Release date Jun 22nd, 2012
Generation Southern Islands
Production End-of-life
Launch price 499 USD
Interface PCIe 3.0 x16
Reviews 191 in our database
Predecessor Northern Islands
Successor Sea Islands

Clocks

Base clock 1000 MHz
Boost clock 1050 MHz
Memory clock 1500 MHz 6 Gbps effective 1365 MHz 5.5 Gbps effective
GPU clock 909 MHz

Memory Configuration

Memory size 3 GB 4 GB
Memory type GDDR5 GDDR5
Memory bus width 384 bit 256 bit
Bandwidth 288.0 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 33.60 GPixel/s 29.09 GPixel/s
Texture rate 134.4 GTexel/s 116.4 GTexel/s
FP32 (float) performance 4.301 TFLOPS 3.723 TFLOPS
FP64 (double) performance 1,075 GFLOPS (1:4) 232.7 GFLOPS (1:16)
FP16 (half) performance 3.723 TFLOPS (1:1)

Dimensions & Outputs

Slot width Dual-slot MXM Module
Length 275 mm 10.8 inches
Width 111 mm 4.4 inches
Height 38 mm 1.5 inches
TDP 300 W 250 W
Suggested PSU 700 W
Outputs 1x DVI1x HDMI2x mini-DisplayPort No outputs
Power connectors 1x 6-pin + 1x 8-pin None
Board number C386-37

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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