ATI Mobility Radeon HD 4870 vs Intel Iris Plus Graphics 640

Edit	ATI Mobility Radeon HD 4870 Check Price	Intel Iris Plus Graphics 640 Check Price

Table of Contents

Graphics Processor
Mobile graphics
Clocks
Memory Configuration
Render Configuration
Performance
Dimensions & Outputs
API Support & Features
Other Features
Integrated Graphics

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

Compare