AMD Radeon HD 7970M vs NVIDIA GeForce GTX 775M Mac Edition

Table of Contents

Graphics Processor

GPU model Wimbledon GK104
GPU variant Wimbledon XT (216-0836036) N13E-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 Apr 24th, 2012 Nov 8th, 2013
Generation London (HD 7900M) GeForce 700M
Production End-of-life End-of-life
Interface MXM-B (3.0) MXM-B (3.0)
Predecessor Vancouver GeForce 600M
Successor Solar System GeForce 800M

Clocks

GPU clock 850 MHz 797 MHz
Memory clock 1200 MHz 4.8 Gbps effective 1250 MHz 5 Gbps effective

Memory Configuration

Memory size 2 GB 2 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 1344
TMUs 80 112
ROPs 32 32
Compute units 20
Cache L1 16 KB (per CU) 16 KB (per SMX)
Cache L2 512 KB 512 KB
SMX count 7

Performance

Pixel rate 27.20 GPixel/s 22.32 GPixel/s
Texture rate 68.00 GTexel/s 89.26 GTexel/s
FP32 (float) performance 2.176 TFLOPS 2.142 TFLOPS
FP64 (double) performance 136.0 GFLOPS (1:16) 89.26 GFLOPS (1:24)

Dimensions & Outputs

Slot width MXM Module MXM Module
TDP 100 W 100 W
Outputs No outputs No outputs
Power connectors None
Board number C429

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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