AMD Radeon R9 M385 vs NVIDIA GeForce GT 645 OEM

Table of Contents

Graphics Processor

GPU model Strato GF114
GPU variant Strato XT
Architecture GCN 2.0 Fermi 2.0
Foundry TSMC TSMC
Manufacturing process 28 nm 40 nm
Number of transistors 2,080 million 1,950 million
Die size 160 mm² 332 mm²

Mobile graphics

Release date May 5th, 2015
Generation Crystal System (R9 M300)
Production End-of-life
Interface PCIe 3.0 x16
Predecessor Solar System
Successor Mobility Radeon

Clocks

Base clock 900 MHz
Boost clock 1000 MHz
Memory clock 1200 MHz 4.8 Gbps effective 957 MHz 3.8 Gbps effective
GPU clock 776 MHz
Shader clock 1552 MHz

Memory Configuration

Memory size 4 GB 1024 MB
Memory type GDDR5 GDDR5
Memory bus width 128 bit 192 bit
Bandwidth 76.80 GB/s 91.87 GB/s

Render Configuration

Shading units 896 288
TMUs 56 48
ROPs 16 24
Compute units 14
Cache L1 16 KB (per CU) 64 KB (per SM)
Cache L2 256 KB 384 KB
SM count 6

Performance

Pixel rate 16.00 GPixel/s 9.312 GPixel/s
Texture rate 56.00 GTexel/s 37.25 GTexel/s
FP32 (float) performance 1.792 TFLOPS 894.0 GFLOPS
FP64 (double) performance 112.0 GFLOPS (1:16) 74.50 GFLOPS (1:12)

Dimensions & Outputs

TDP unknown 102 W
Outputs No outputs 2x DVI1x mini-HDMI
Slot width Dual-slot
Length 210 mm 8.3 inches
Suggested PSU 300 W

API Support & Features

DirectX 12 (12_0) 12 (11_0)
OpenGL 4.6 4.6
OpenCL 2.0 1.1
Vulkan 1.2
Shader model 6.3 5.1
CUDA 2.1

Other Features

Graphics Card

Release date Apr 24th, 2012
Generation GeForce 600
Production End-of-life
Interface PCIe 2.0 x16
Predecessor GeForce 500
Successor GeForce 700

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