AMD Radeon RX 6800 XT vs AMD Radeon R9 270 1024SP

VS

AMD Radeon RX 6800 XT

AMD Radeon R9 270 1024SP

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6800 XT and 2GB VRAM Radeon R9 270 1024SP 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 5 years and 7 months late

Boost Clock has increased by 143% (2250MHz vs 925MHz)

More VRAM (16GB vs 2GB)

Larger VRAM bandwidth (512.0GB/s vs 153.6GB/s)

3584 additional rendering cores

AMD Radeon R9 270 1024SP 's Advantages

Lower TDP (150W vs 300W)

Score

Benchmark

FP32 (float)

Radeon RX 6800 XT +995%

20.74 TFLOPS

Radeon R9 270 1024SP

1.894 TFLOPS

Radeon RX 6800 XT

VS

Radeon R9 270 1024SP

Graphics Card

Oct 2020

Release Date

Mar 2015

Navi II

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1825 MHz

Base Clock

900 MHz

2250 MHz

Boost Clock

925 MHz

2000 MHz

Memory Clock

1200 MHz

Memory

16GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

256bit

Memory Bus

256bit

512.0GB/s

Bandwidth

153.6GB/s

Render Config

72

Compute Units

16

-

4608

Shading Units

1024

288

TMUs

64

128

ROPs

32

-

72

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

4 MB

L2 Cache

512 KB

128 MB

L3 Cache

-

Theoretical Performance

288.0 GPixel/s

Pixel Rate

29.60 GPixel/s

648.0 GTexel/s

Texture Rate

59.20 GTexel/s

41.47 TFLOPS

FP16 (half)

-

20.74 TFLOPS

FP32 (float)

1.894 TFLOPS

1296 GFLOPS

FP64 (double)

118.4 GFLOPS

Board Design

300W

TDP

150W

700 W

Suggested PSU

450 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

1x 6-pin

Graphics Processor

Navi 21

GPU Name

Pitcairn

Navi 21 XT (215-121000177)

GPU Variant

Pitcairn PRO (215-0828062)

RDNA 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

7 nm

Process Size

28 nm

26.8 billion

Transistors

2.8 billion

520 mm²

Die Size

212 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

1.2

1.3

Vulkan

1.2

-

6.5

Shader Model

5.1

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