AMD Radeon HD 8970M vs NVIDIA GeForce GTX 780M Mac Edition

Table of Contents

Graphics Processor

GPU model Neptune GK104
GPU variant Neptune XT (216-0847000) N14E-GTX-A2
Architecture GCN 1.0 Kepler
Foundry TSMC TSMC
Manufacturing process 28 nm 28 nm
Number of transistors 2,800 million 3,540 million
Die size 212 mm² 294 mm²

Mobile graphics

Release date May 14th, 2013 Nov 8th, 2013
Generation Solar System (HD 8900M) GeForce 700M
Production End-of-life End-of-life
Interface PCIe 3.0 x16 MXM-B (3.0)
Predecessor London GeForce 600M
Successor Crystal System GeForce 800M

Clocks

Base clock 850 MHz 771 MHz
Boost clock 900 MHz 797 MHz
Memory clock 1200 MHz 4.8 Gbps effective 1250 MHz 5 Gbps effective

Memory Configuration

Memory size 4 GB 4 GB
Memory type GDDR5 GDDR5
Memory bus width 256 bit 256 bit
Bandwidth 153.6 GB/s 160.0 GB/s

Render Configuration

Shading units 1280 1536
TMUs 80 128
ROPs 32 32
Compute units 20
Cache L1 16 KB (per CU) 16 KB (per SMX)
Cache L2 512 KB 512 KB
SMX count 8

Performance

Pixel rate 28.80 GPixel/s 25.50 GPixel/s
Texture rate 72.00 GTexel/s 102.0 GTexel/s
FP32 (float) performance 2.304 TFLOPS 2.448 TFLOPS
FP64 (double) performance 144.0 GFLOPS (1:16) 102.0 GFLOPS (1:24)

Dimensions & Outputs

Slot width MXM Module MXM Module
TDP 100 W 122 W
Outputs No outputs No outputs

API Support & Features

DirectX 12 (11_1) 12 (11_0)
OpenGL 4.6 4.6
OpenCL 1.2 3.0
Vulkan 1.2 1.1
Shader model 5.1 5.1
CUDA 3.0

Other Features

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