AMD Radeon RX 6800 XT vs AMD Radeon HD 6390

VS

AMD Radeon RX 6800 XT

AMD Radeon HD 6390

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6800 XT and 1024MB VRAM Radeon HD 6390 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6800 XT 's Advantages

Released 9 years and 3 months late

Boost Clock2250MHz

More VRAM (16GB vs 1024GB)

Larger VRAM bandwidth (512.0GB/s vs 16.00GB/s)

4288 additional rendering cores

AMD Radeon HD 6390 's Advantages

Lower TDP (39W vs 300W)

Score

Benchmark

FP32 (float)

Radeon RX 6800 XT +5792%

20.74 TFLOPS

Radeon HD 6390

0.352 TFLOPS

Radeon RX 6800 XT

VS

Radeon HD 6390

Graphics Card

Oct 2020

Release Date

Jul 2011

Navi II

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1825 MHz

Base Clock

-

2250 MHz

Boost Clock

-

2000 MHz

Memory Clock

500 MHz

Memory

16GB

Memory Size

1024MB

GDDR6

Memory Type

DDR2

256bit

Memory Bus

128bit

512.0GB/s

Bandwidth

16.00GB/s

Render Config

72

Compute Units

4

-

4608

Shading Units

320

288

TMUs

16

128

ROPs

8

-

72

RT Cores

-

128 KB per Array

L1 Cache

8 KB (per CU)

4 MB

L2 Cache

256 KB

128 MB

L3 Cache

-

Theoretical Performance

288.0 GPixel/s

Pixel Rate

4.400 GPixel/s

648.0 GTexel/s

Texture Rate

8.800 GTexel/s

41.47 TFLOPS

FP16 (half)

-

20.74 TFLOPS

FP32 (float)

352.0 GFLOPS

1296 GFLOPS

FP64 (double)

-

Board Design

300W

TDP

39W

700 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

2x 8-pin

Power Connectors

None

Graphics Processor

Navi 21

GPU Name

Redwood

Navi 21 XT (215-121000177)

GPU Variant

Redwood LE

RDNA 2.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

7 nm

Process Size

40 nm

26.8 billion

Transistors

0.627 billion

520 mm²

Die Size

104 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.1

OpenCL

1.2

1.3

Vulkan

N/A

-

6.5

Shader Model

5.0

Related GPU Comparisons

1

AMD Radeon RX 6800 XT vs AMD Radeon R9 390

2

AMD Radeon RX 6800 XT vs AMD FirePro S9010

3

AMD Radeon RX 6800 XT vs NVIDIA GeForce GTX 1060 3 GB GP104

4

AMD Radeon RX 6800 XT vs ATI Radeon HD 4730

5

AMD Radeon RX 6800 XT vs ATI FireGL V5600

6

AMD Radeon RX 6800 XT vs NVIDIA GeForce GTX 660 OEM

7

AMD Radeon RX 6800 XT vs NVIDIA GeForce GTX 490

8

AMD Radeon RX 6800 XT vs ATI Radeon HD 4870 Mac Edition

9

AMD Radeon RX 6800 XT vs ATI Radeon HD 4570

10

AMD Radeon RX 6800 XT vs NVIDIA GeForce RTX 2070 SUPER

Related News

1

CXMT Reportedly Achieves 80% Yield in DDR5 Production

2

Intel Wildcat Lake Appears on Shipping List with FCBGA1516 Socket, Poised to Replace Alder Lake-N

3

The Commencement of ARM and Qualcomm Licensing Dispute Trial: Potential Major Impact on PC Market

4

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

5

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

6

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

7

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

8

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

9

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

10

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