ATI Mobility Radeon HD 4870 vs Intel Iris Plus Graphics 640

Table of Contents

Graphics Processor

GPU model M98 Kaby Lake GT3e
GPU variant M98 XT (216-0732023)
Architecture TeraScale Generation 9.5
Foundry TSMC Intel
Manufacturing process 55 nm 14 nm++
Number of transistors 956 million unknown
Die size 256 mm² unknown

Mobile graphics

Release date Jan 9th, 2009
Generation M9x (Mobility HD 4800)
Production End-of-life
Interface PCIe 2.0 x16
Reviews 2 in our database
Predecessor M8x
Successor Manhattan

Clocks

GPU clock 550 MHz
Memory clock 888 MHz 1776 Mbps effective System Shared
Base clock 300 MHz
Boost clock 1100 MHz

Memory Configuration

Memory size 512 MB System Shared
Memory type GDDR3 System Shared
Memory bus width 256 bit System Shared
Bandwidth 56.83 GB/s System Dependent

Render Configuration

Shading units 800 384
TMUs 40 48
ROPs 16 6
Compute units 10
Cache L1 16 KB (per CU)
Cache L2 256 KB
Execution units 48

Performance

Pixel rate 8.800 GPixel/s 6.600 GPixel/s
Texture rate 22.00 GTexel/s 52.80 GTexel/s
FP32 (float) performance 880.0 GFLOPS 844.8 GFLOPS
FP64 (double) performance 176.0 GFLOPS (1:5) 211.2 GFLOPS (1:4)
FP16 (half) performance 1.690 TFLOPS (2:1)

Dimensions & Outputs

TDP unknown 15 W
Outputs No outputs No outputs
Slot width IGP

API Support & Features

DirectX 10.1 (10_1) 12 (12_1)
OpenGL 3.3 4.6
OpenCL 1.1 3.0
Vulkan 1.2
Shader model 4.1 6.4

Other Features

Integrated Graphics

Release date Jan 3rd, 2017
Generation HD Graphics-M (Kaby Lake)
Production Active
Interface Ring Bus
Reviews 1 in our database

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