AMD Radeon HD 7970 vs AMD Radeon Pro Vega 20

Table of Contents

Graphics Processor

GPU model Tahiti Vega 12
GPU variant Tahiti XT (215-0821060) Vega 12 XTA
Architecture GCN 1.0 GCN 5.0
Foundry TSMC GlobalFoundries
Manufacturing process 28 nm 14 nm
Number of transistors 4,313 million unknown
Die size 352 mm² unknown

Graphics Card

Release date Dec 22nd, 2011
Generation Southern Islands
Production End-of-life
Launch price 549 USD
Interface PCIe 3.0 x16
Reviews 191 in our database
gpu.details.availability Jan 9th, 2012
Predecessor Northern Islands
Successor Sea Islands

Clocks

GPU clock 925 MHz
Memory clock 1375 MHz 5.5 Gbps effective 740 MHz 1480 Mbps effective
Base clock 815 MHz
Boost clock 1283 MHz

Memory Configuration

Memory size 3 GB 4 GB
Memory type GDDR5 HBM2
Memory bus width 384 bit 1024 bit
Bandwidth 264.0 GB/s 189.4 GB/s

Render Configuration

Shading units 2048 1280
TMUs 128 80
ROPs 32 32
Compute units 32 20
Cache L1 16 KB (per CU) 16 KB (per CU)
Cache L2 768 KB 1024 KB

Performance

Pixel rate 29.60 GPixel/s 41.06 GPixel/s
Texture rate 118.4 GTexel/s 102.6 GTexel/s
FP32 (float) performance 3.789 TFLOPS 3.284 TFLOPS
FP64 (double) performance 947.2 GFLOPS (1:4) 205.3 GFLOPS (1:16)
FP16 (half) performance 6.569 TFLOPS (2:1)

Dimensions & Outputs

Slot width Dual-slot IGP
Length 275 mm 10.8 inches
Width 111 mm 4.4 inches
Height 38 mm 1.5 inches
TDP 250 W 100 W
Suggested PSU 600 W
Outputs 1x DVI1x HDMI2x mini-DisplayPort No outputs
Power connectors 1x 6-pin + 1x 8-pin
Board number C386-37

API Support & Features

DirectX 12 (11_1) 12 (12_1)
OpenGL 4.6 4.6
OpenCL 1.2 2.1
Vulkan 1.2 1.2
Shader model 5.1 6.3

Other Features

Mobile graphics

Release date Nov 14th, 2018
Generation Radeon Pro Mac (Vega Series)
Production Active
Interface PCIe 3.0 x16

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