AMD Radeon R9 M485X vs NVIDIA GRID K340

Table of Contents

Graphics Processor

GPU model Amethyst GK107
GPU variant Amethyst XT —
Architecture GCN 3.0 Kepler
Foundry TSMC TSMC
Manufacturing process 28 nm 28 nm
Number of transistors 5,000 million 1,270 million
Die size 366 mm² 118 mm²

Mobile graphics

Release date May 15th, 2016 —
Generation Crystal System (R9 M400) —
Production End-of-life —
Interface MXM-B (3.0) —
Predecessor Solar System —
Successor Mobility Radeon —

Clocks

GPU clock 723 MHz 954 MHz
Memory clock 1250 MHz 5 Gbps effective 1250 MHz 5 Gbps effective

Memory Configuration

Memory size 8 GB 1024 MB
Memory type GDDR5 GDDR5
Memory bus width 256 bit 128 bit
Bandwidth 160.0 GB/s 80.00 GB/s

Render Configuration

Shading units 2048 384
TMUs 128 32
ROPs 32 16
Compute units 32 —
Cache L1 16 KB (per CU) 16 KB (per SMX)
Cache L2 512 KB 128 KB
SMX count — 2

Performance

Pixel rate 23.14 GPixel/s 7.632 GPixel/s
Texture rate 92.54 GTexel/s 30.53 GTexel/s
FP16 (half) performance 2.961 TFLOPS (1:1) —
FP32 (float) performance 2.961 TFLOPS 732.7 GFLOPS
FP64 (double) performance 185.1 GFLOPS (1:16) 30.53 GFLOPS (1:24)

Dimensions & Outputs

Slot width MXM Module Dual-slot
TDP 250 W 225 W
Outputs No outputs No outputs
Power connectors None 1x 8-pin
Length — 267 mm 10.5 inches
Suggested PSU — 550 W

API Support & Features

DirectX 12 (12_0) 12 (11_0)
OpenGL 4.6 4.6
OpenCL 2.0 3.0
Vulkan 1.2 1.1
Shader model 6.3 5.1
CUDA — 3.0

Other Features

Graphics Card

Release date — Jul 23rd, 2013
Generation — GRID
Production — End-of-life
Launch price — 3,299 USD
Interface — PCIe 3.0 x16

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