AMD Radeon HD 6490M Mac Edition vs NVIDIA GeForce GT 620

Table of Contents

Graphics Processor

GPU model Seymour GF108
GPU variant Seymour XTX (216-0810005) GF108-100-KB-A1
Architecture TeraScale 2 Fermi
Foundry TSMC TSMC
Manufacturing process 40 nm 40 nm
Number of transistors 370 million 585 million
Die size 67 mm² 116 mm²

Mobile graphics

Release date May 2nd, 2011
Generation Vancouver (HD 6400M)
Production End-of-life
Interface PCIe 2.0 x16
Predecessor Manhattan
Successor London

Clocks

GPU clock 750 MHz 700 MHz
Memory clock 794 MHz 3.2 Gbps effective 900 MHz 1800 Mbps effective
Shader clock 1400 MHz

Memory Configuration

Memory size 256 MB 1024 MB
Memory type GDDR5 DDR3
Memory bus width 64 bit 64 bit
Bandwidth 25.41 GB/s 14.40 GB/s

Render Configuration

Shading units 160 96
TMUs 8 16
ROPs 4 4
Compute units 2
Cache L1 8 KB (per CU) 64 KB (per SM)
Cache L2 128 KB 128 KB
SM count 2

Performance

Pixel rate 3.000 GPixel/s 2.800 GPixel/s
Texture rate 6.000 GTexel/s 11.20 GTexel/s
FP32 (float) performance 240.0 GFLOPS 268.8 GFLOPS
FP64 (double) performance 22.40 GFLOPS (1:12)

Dimensions & Outputs

TDP unknown 49 W
Outputs No outputs 1x DVI1x HDMI1x VGA
Slot width Single-slot
Length 145 mm 5.7 inches
Suggested PSU 200 W
Power connectors None
Board number P1071

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

Graphics Card

Release date May 15th, 2012
Generation GeForce 600
Production End-of-life
Interface PCIe 2.0 x16
Predecessor GeForce 500
Successor GeForce 700

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