AMD Radeon RX 6800 XT vs AMD Radeon R7 450 OEM

VS

AMD Radeon RX 6800 XT

AMD Radeon R7 450 OEM

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6800 XT and 2GB VRAM Radeon R7 450 OEM 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 4 years and 4 months late

Boost Clock2250MHz

More VRAM (16GB vs 2GB)

Larger VRAM bandwidth (512.0GB/s vs 72.00GB/s)

4096 additional rendering cores

AMD Radeon R7 450 OEM 's Advantages

Lower TDP (65W vs 300W)

Score

Benchmark

FP32 (float)

Radeon RX 6800 XT +2090%

20.74 TFLOPS

Radeon R7 450 OEM

0.947 TFLOPS

Radeon RX 6800 XT

VS

Radeon R7 450 OEM

Graphics Card

Oct 2020

Release Date

Jun 2016

Navi II

Generation

Arctic 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

1125 MHz

Memory

16GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

256bit

Memory Bus

128bit

512.0GB/s

Bandwidth

72.00GB/s

Render Config

72

Compute Units

8

-

4608

Shading Units

512

288

TMUs

32

128

ROPs

16

-

72

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

4 MB

L2 Cache

256 KB

128 MB

L3 Cache

-

Theoretical Performance

288.0 GPixel/s

Pixel Rate

14.80 GPixel/s

648.0 GTexel/s

Texture Rate

29.60 GTexel/s

41.47 TFLOPS

FP16 (half)

-

20.74 TFLOPS

FP32 (float)

947.2 GFLOPS

1296 GFLOPS

FP64 (double)

59.20 GFLOPS

Board Design

300W

TDP

65W

700 W

Suggested PSU

250 W

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

Outputs

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

2x 8-pin

Power Connectors

None

Graphics Processor

Navi 21

GPU Name

Cape Verde

Navi 21 XT (215-121000177)

GPU Variant

Cape Verde PRO2

RDNA 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

7 nm

Process Size

28 nm

26.8 billion

Transistors

1.5 billion

520 mm²

Die Size

123 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

2.1 (1.2)

1.3

Vulkan

1.2.170

-

6.5

Shader Model

6.5 (5.1)

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