AMD Radeon HD 6630M Mac Edition vs NVIDIA GeForce GT 640M LE

Table of Contents

Graphics Processor

GPU model Whistler GF108
GPU variant Whistler LP
Architecture TeraScale 2 Fermi
Foundry TSMC TSMC
Manufacturing process 40 nm 40 nm
Number of transistors 716 million 585 million
Die size 104 mm² 116 mm²

Mobile graphics

Release date Jan 4th, 2011 May 4th, 2012
Generation Vancouver (HD 6600M) GeForce 600M
Production End-of-life End-of-life
Interface PCIe 2.0 x16 PCIe 2.0 x16
Predecessor Manhattan GeForce 500M
Successor London GeForce 700M
Reviews 2 in our database

Clocks

GPU clock 500 MHz 753 MHz
Memory clock 600 MHz 2.4 Gbps effective 785 MHz 3.1 Gbps effective
Shader clock 1505 MHz

Memory Configuration

Memory size 256 MB 2 GB
Memory type GDDR5 GDDR5
Memory bus width 64 bit 128 bit
Bandwidth 19.20 GB/s 50.24 GB/s

Render Configuration

Shading units 480 96
TMUs 24 16
ROPs 8 4
Compute units 6
SM count 2
Cache L1 64 KB (per SM)
Cache L2 256 KB

Performance

Pixel rate 4.000 GPixel/s 3.012 GPixel/s
Texture rate 12.00 GTexel/s 12.05 GTexel/s
FP32 (float) performance 480.0 GFLOPS 289.0 GFLOPS
FP64 (double) performance 24.08 GFLOPS (1:12)

Dimensions & Outputs

TDP 26 W 32 W
Outputs No outputs No outputs

API Support & Features

DirectX 11.2 (11_0) 12 (11_0)
OpenGL 4.4 4.6
OpenCL 1.2 1.1
Vulkan
Shader model 5.0 5.1
CUDA 2.1

Other Features

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