ATI Mobility Radeon HD 4870 vs ATI Radeon HD 5770 X2

Table of Contents

Graphics Processor

GPU model M98 Juniper
GPU variant M98 XT (216-0732023) Juniper XT (215-0754013)
Architecture TeraScale TeraScale 2
Foundry TSMC TSMC
Manufacturing process 55 nm 40 nm
Number of transistors 956 million 1,040 million
Die size 256 mm² 166 mm²

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 850 MHz
Memory clock 888 MHz 1776 Mbps effective 1200 MHz 4.8 Gbps effective

Memory Configuration

Memory size 512 MB 1024 MB
Memory type GDDR3 GDDR5
Memory bus width 256 bit 128 bit
Bandwidth 56.83 GB/s 76.80 GB/s

Render Configuration

Shading units 800 800
TMUs 40 40
ROPs 16 16
Compute units 10 10
Cache L1 16 KB (per CU) 8 KB (per CU)
Cache L2 256 KB 256 KB

Performance

Pixel rate 8.800 GPixel/s 13.60 GPixel/s
Texture rate 22.00 GTexel/s 34.00 GTexel/s
FP32 (float) performance 880.0 GFLOPS 1,360 GFLOPS
FP64 (double) performance 176.0 GFLOPS (1:5)

Dimensions & Outputs

TDP unknown unknown
Outputs No outputs 2x DVI1x HDMI1x DisplayPort
Slot width Dual-slot
Suggested PSU 200 W

API Support & Features

DirectX 10.1 (10_1) 11.2 (11_0)
OpenGL 3.3 4.4
OpenCL 1.1 1.2
Vulkan
Shader model 4.1 5.0

Other Features

Graphics Card

Release date Oct 13th, 2010
Generation Evergreen
Production End-of-life
Interface PCIe 2.0 x16
Reviews 142 in our database
Predecessor Radeon R700
Successor Northern Islands

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