AMD Radeon HD 7870M vs NVIDIA GeForce 940MX

Table of Contents

Graphics Processor

GPU model Heathrow GM107
GPU variant Heathrow XT (216-0835033) N16S-GT1R
Architecture GCN 1.0 Maxwell
Foundry TSMC TSMC
Manufacturing process 28 nm 28 nm
Number of transistors 1,500 million 1,870 million
Die size 123 mm² 148 mm²

Mobile graphics

Release date Apr 24th, 2012 Jun 28th, 2016
Generation London (HD 7800M) GeForce 900M
Production End-of-life End-of-life
Interface PCIe 3.0 x16 PCIe 3.0 x8
Predecessor Vancouver GeForce 800M
Successor Solar System GeForce 10 Mobile

Clocks

GPU clock 800 MHz
Memory clock 1000 MHz 4 Gbps effective 1253 MHz 5 Gbps effective
Base clock 795 MHz
Boost clock 861 MHz

Memory Configuration

Memory size 2 GB 2 GB
Memory type GDDR5 GDDR5
Memory bus width 128 bit 64 bit
Bandwidth 64.00 GB/s 40.10 GB/s

Render Configuration

Shading units 640 512
TMUs 40 32
ROPs 16 8
Compute units 10
Cache L1 16 KB (per CU) 64 KB (per SMM)
Cache L2 256 KB 1024 KB
SMM count 4

Performance

Pixel rate 12.80 GPixel/s 6.888 GPixel/s
Texture rate 32.00 GTexel/s 27.55 GTexel/s
FP32 (float) performance 1,024 GFLOPS 881.7 GFLOPS
FP64 (double) performance 64.00 GFLOPS (1:16) 27.55 GFLOPS (1:32)

Dimensions & Outputs

TDP 45 W 23 W
Outputs No outputs No outputs
Slot width MXM Module
Power connectors None

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 5.0

Other Features

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