AMD Radeon R7 M370 vs ATI Radeon HD 4870 Mac Edition

Table of Contents

Graphics Processor

GPU model Litho RV770
GPU variant Litho XT RV770 XT Mac (215-0669080)
Architecture GCN 1.0 TeraScale
Foundry TSMC TSMC
Manufacturing process 28 nm 55 nm
Number of transistors 690 million 956 million
Die size 56 mm² 256 mm²

Mobile graphics

Release date May 5th, 2015
Generation Crystal System (R7 M300)
Production End-of-life
Interface PCIe 3.0 x8
Predecessor Solar System
Successor Mobility Radeon

Clocks

Base clock 900 MHz
Boost clock 960 MHz
Memory clock 1150 MHz 4.6 Gbps effective 850 MHz 3.4 Gbps effective
GPU clock 750 MHz

Memory Configuration

Memory size 4 GB 512 MB
Memory type GDDR5 GDDR5
Memory bus width 128 bit 256 bit
Bandwidth 73.60 GB/s 108.8 GB/s

Render Configuration

Shading units 384 800
TMUs 24 40
ROPs 8 16
Compute units 6 10
Cache L1 16 KB (per CU) 16 KB (per CU)
Cache L2 256 KB 256 KB

Performance

Pixel rate 7.680 GPixel/s 12.00 GPixel/s
Texture rate 23.04 GTexel/s 30.00 GTexel/s
FP32 (float) performance 737.3 GFLOPS 1,200 GFLOPS
FP64 (double) performance 46.08 GFLOPS (1:16) 240.0 GFLOPS (1:5)

Dimensions & Outputs

TDP unknown 150 W
Outputs No outputs 1x DVI1x mini-DisplayPort
Slot width Dual-slot
Length 250 mm 9.8 inches
Suggested PSU 450 W
Power connectors 2x 6-pin
Board number B771

API Support & Features

DirectX 12 (11_1) 10.1 (10_1)
OpenGL 4.6 3.3
OpenCL 1.2 1.1
Vulkan 1.2
Shader model 5.1 4.1

Other Features

Graphics Card

Release date Jan 6th, 2009
Generation Radeon R700
Production End-of-life
Interface PCIe 2.0 x16
Reviews 135 in our database
Predecessor Radeon R600
Successor Evergreen

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