AMD Radeon HD 6970M vs AMD Radeon RX 550X

Table of Contents

Graphics Processor

GPU model Blackcomb Lexa
GPU variant Blackcomb XT (216-0811000) Lexa PRO (215-0904018)
Architecture TeraScale 2 GCN 4.0
Foundry TSMC GlobalFoundries
Manufacturing process 40 nm 14 nm
Number of transistors 1,700 million 2,200 million
Die size 212 mm² 103 mm²

Mobile graphics

Release date Jan 4th, 2011
Generation Vancouver (HD 6900M)
Production End-of-life
Interface MXM-B (3.0)
Predecessor Manhattan
Successor London

Clocks

GPU clock 680 MHz
Memory clock 900 MHz 3.6 Gbps effective 1500 MHz 6 Gbps effective
Base clock 1100 MHz
Boost clock 1183 MHz

Memory Configuration

Memory size 1024 MB 4 GB
Memory type GDDR5 GDDR5
Memory bus width 256 bit 128 bit
Bandwidth 115.2 GB/s 96.00 GB/s

Render Configuration

Shading units 960 512
TMUs 48 32
ROPs 32 16
Compute units 12 8
Cache L1 8 KB (per CU) 16 KB (per CU)
Cache L2 512 KB 512 KB

Performance

Pixel rate 21.76 GPixel/s 18.93 GPixel/s
Texture rate 32.64 GTexel/s 37.86 GTexel/s
FP32 (float) performance 1,306 GFLOPS 1,211 GFLOPS
FP16 (half) performance 1,211 GFLOPS (1:1)
FP64 (double) performance 75.71 GFLOPS (1:16)

Dimensions & Outputs

Slot width MXM Module Dual-slot
TDP 75 W 50 W
Outputs No outputs 1x DVI1x HDMI1x DisplayPort
Power connectors None None
Board number C296 D090
Length 145 mm 5.7 inches
Suggested PSU 250 W

API Support & Features

DirectX 11.2 (11_0) 12 (12_0)
OpenGL 4.4 4.6
OpenCL 1.2 2.1
Vulkan 1.2
Shader model 5.0 6.4

Other Features

Graphics Card

Release date Dec 16th, 2018
Generation Polaris
Production End-of-life
Interface PCIe 3.0 x8
Predecessor Polaris
Successor Vega

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