AMD Radeon RX 6600 XT vs AMD Radeon R9 270X

VS

AMD Radeon RX 6600 XT

AMD Radeon R9 270X

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 XT and 2GB VRAM Radeon R9 270X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6600 XT 's Advantages

Released 7 years and 9 months late

Boost Clock has increased by 147% (2589MHz vs 1050MHz)

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (256.0GB/s vs 179.2GB/s)

768 additional rendering cores

Lower TDP (160W vs 180W)

Score

Benchmark

FP32 (float)

Radeon RX 6600 XT +294%

10.6 TFLOPS

Radeon R9 270X

2.688 TFLOPS

3DMark Time Spy

Radeon RX 6600 XT +441%

9579

Radeon R9 270X

1769

Radeon RX 6600 XT

VS

Radeon R9 270X

Graphics Card

Jul 2021

Release Date

Oct 2013

Navi II

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 4.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

1968 MHz

Base Clock

1000 MHz

2589 MHz

Boost Clock

1050 MHz

2000 MHz

Memory Clock

1400 MHz

Memory

8GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

128bit

Memory Bus

256bit

256.0GB/s

Bandwidth

179.2GB/s

Render Config

32

Compute Units

20

-

2048

Shading Units

1280

128

TMUs

80

64

ROPs

32

-

32

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

2 MB

L2 Cache

512 KB

32 MB

L3 Cache

-

Theoretical Performance

165.7 GPixel/s

Pixel Rate

33.60 GPixel/s

331.4 GTexel/s

Texture Rate

84.00 GTexel/s

21.21 TFLOPS

FP16 (half)

-

10.60 TFLOPS

FP32 (float)

2.688 TFLOPS

662.8 GFLOPS

FP64 (double)

168.0 GFLOPS

Board Design

160W

TDP

180W

450 W

Suggested PSU

450 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

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

1x 8-pin

Power Connectors

2x 6-pin

Graphics Processor

Navi 23

GPU Name

Curacao

Navi 23 XT (215-130000006)

GPU Variant

Curacao XT (215-0848004)

RDNA 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

7 nm

Process Size

28 nm

11.06 billion

Transistors

2.8 billion

237 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

-

6.7

Shader Model

5.1

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