AMD Radeon RX 6900 XT vs AMD Radeon R9 390 X2

VS

AMD Radeon RX 6900 XT

AMD Radeon R9 390 X2

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6900 XT and 8GB VRAM Radeon R9 390 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6900 XT 's Advantages

Released 5 years and 1 months late

Boost Clock2250MHz

More VRAM (16GB vs 8GB)

Larger VRAM bandwidth (512.0GB/s vs 345.6GB/s)

2560 additional rendering cores

Lower TDP (300W vs 580W)

Score

Benchmark

FP32 (float)

Radeon RX 6900 XT +350%

23.04 TFLOPS

Radeon R9 390 X2

5.12 TFLOPS

Radeon RX 6900 XT

VS

Radeon R9 390 X2

Graphics Card

Oct 2020

Release Date

Sep 2015

Navi II

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1825 MHz

Base Clock

-

2250 MHz

Boost Clock

-

2000 MHz

Memory Clock

1350 MHz

Memory

16GB

Memory Size

8GB

GDDR6

Memory Type

GDDR5

256bit

Memory Bus

512bit

512.0GB/s

Bandwidth

345.6GB/s

Render Config

80

Compute Units

40

-

5120

Shading Units

2560

320

TMUs

160

128

ROPs

64

-

80

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

4 MB

L2 Cache

1024 KB

128 MB

L3 Cache

-

Theoretical Performance

288.0 GPixel/s

Pixel Rate

64.00 GPixel/s

720.0 GTexel/s

Texture Rate

160.0 GTexel/s

46.08 TFLOPS

FP16 (half)

-

23.04 TFLOPS

FP32 (float)

5.120 TFLOPS

1440 GFLOPS

FP64 (double)

640.0 GFLOPS

Board Design

300W

TDP

580W

700 W

Suggested PSU

950 W

1x HDMI 2.1 2x DisplayPort 1.4a 1x USB Type-C

Outputs

2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

2x 8-pin

Power Connectors

4x 8-pin

Graphics Processor

Navi 21

GPU Name

Grenada

Navi 21 XTX (215-121000167)

GPU Variant

Grenada PRO (215-0880030)

RDNA 2.0

Architecture

GCN 2.0

TSMC

Foundry

TSMC

7 nm

Process Size

28 nm

26.8 billion

Transistors

6.2 billion

520 mm²

Die Size

438 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.1

OpenCL

2.0

1.3

Vulkan

1.2

-

6.5

Shader Model

6.3

Related GPU Comparisons

1

AMD Radeon RX 6900 XT vs ATI FireGL V8650

2

AMD Radeon RX 6900 XT vs NVIDIA GeForce GTX 650 Ti

3

AMD Radeon RX 6900 XT vs NVIDIA GeForce 9500 GT Rev. 3

4

AMD Radeon RX 6900 XT vs NVIDIA GeForce GT 440 OEM

5

AMD Radeon RX 6900 XT vs AMD Radeon RX 550 512SP

6

AMD Radeon RX 6900 XT vs ATI Radeon HD 4750

7

AMD Radeon RX 6900 XT vs NVIDIA GeForce GTX 1080 Ti 12 GB

8

AMD Radeon RX 6900 XT vs NVIDIA GeForce RTX 2080

9

AMD Radeon RX 6900 XT vs NVIDIA GeForce GTX TITAN X

10

AMD Radeon RX 6900 XT vs ATI Radeon HD 2950 PRO

Related News

1

NVIDIA Allegedly Equips RTX 5080 with 30Gbps Memory Speed, Other Models to Feature 28Gbps

2

Intel Reports High Return Rates for Devices Featuring Snapdragon X Series; Qualcomm Counters with 'Industry Standard' Claim

3

Intel Confirms Panther Lake Adopts 18A Process, ES0 Samples Already Sent to Customers

4

Complete Lineup of Core Ultra 200HX/H/U and Core 200H/U Revealed: 31 Models to Dazzle the Eyes

5

Amechi Unveils V1 Mini PC: Only 0.33L Volume with 150W Power Consumption

6

iPhone 17 Series Set for Major Design Overhaul: Camera Module Transformed into Sleek Strip

7

The Thinnest iPhone Ever! iPhone 17 Air Reportedly Enters Foxconn's NPI Stage

8

Apple Allegedly Cancels M4 Extreme, Originally Planned for Mac Pro with 64-Core CPU and 160-Core GPU

9

Cyberpunk 2077 Update 2.2: Intel Arrow Lake Gaming Performance Soars by 33%!

10

Intel Finally Achieves Frame Generation! 'F1 24' Becomes the First XeSS 2 Game