ATI Radeon HD 3870 vs NVIDIA GRID A100B

Table of Contents

Graphics Processor

GPU model RV670 GA100
GPU variant RV670 XT (215-0708005)
Architecture TeraScale Ampere
Foundry TSMC TSMC
Manufacturing process 55 nm 7 nm
Number of transistors 666 million 54,200 million
Die size 192 mm² 826 mm²

Graphics Card

Release date Nov 19th, 2007 May 14th, 2020
Generation Radeon R600 GRID
Production End-of-life Active
Launch price 269 USD
Interface PCIe 2.0 x16 PCIe 4.0 x16
Reviews 80 in our database
Predecessor Radeon R500 PCIe
Successor Radeon R700

Clocks

GPU clock 777 MHz
Memory clock 1126 MHz 2.3 Gbps effective 1215 MHz 2.4 Gbps effective
Base clock 900 MHz
Boost clock 1005 MHz

Memory Configuration

Memory size 512 MB 48 GB
Memory type GDDR4 HBM2E
Memory bus width 256 bit 6144 bit
Bandwidth 72.06 GB/s 1,866 GB/s

Render Configuration

Shading units 320 6912
TMUs 16 432
ROPs 16 192
Compute units 4
Cache L2 256 KB 48 MB
SM count 108
Tensor cores 432
Cache L1 192 KB (per SM)

Performance

Pixel rate 12.43 GPixel/s 193.0 GPixel/s
Texture rate 12.43 GTexel/s 434.2 GTexel/s
FP32 (float) performance 497.3 GFLOPS 13.89 TFLOPS
FP64 (double) performance 99.46 GFLOPS (1:5) 6.947 TFLOPS (1:2)
FP16 (half) performance 55.57 TFLOPS (4:1)

Dimensions & Outputs

Slot width Dual-slot IGP
Length 241 mm 9.5 inches
TDP 106 W 400 W
Suggested PSU 300 W 800 W
Outputs 2x DVI1x S-Video No outputs
Power connectors 1x 6-pin None
Board number B339

API Support & Features

DirectX 10.1 (10_1)
OpenGL 3.3 (full) 4.0 (partial)
OpenCL 3.0
Vulkan
Shader model 4.1
CUDA 8.0

Other Features

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