AMD Radeon RX 6600 XT vs AMD Radeon RX Vega 64 Limited Edition

VS

AMD Radeon RX 6600 XT

AMD Radeon RX Vega 64 Limited Edition

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 XT and 8GB VRAM Radeon RX Vega 64 Limited Edition 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 3 years and 11 months late

Boost Clock has increased by 67% (2589MHz vs 1546MHz)

Lower TDP (160W vs 295W)

AMD Radeon RX Vega 64 Limited Edition 's Advantages

Larger VRAM bandwidth (483.8GB/s vs 256.0GB/s)

2048 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6600 XT

10.6 TFLOPS

Radeon RX Vega 64 Limited Edition +19%

12.66 TFLOPS

Radeon RX 6600 XT

VS

Radeon RX Vega 64 Limited Edition

Graphics Card

Jul 2021

Release Date

Aug 2017

Navi II

Generation

Vega

Desktop

Type

Desktop

PCIe 4.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

1968 MHz

Base Clock

1247 MHz

2589 MHz

Boost Clock

1546 MHz

2000 MHz

Memory Clock

945 MHz

Memory

8GB

Memory Size

8GB

GDDR6

Memory Type

HBM2

128bit

Memory Bus

2048bit

256.0GB/s

Bandwidth

483.8GB/s

Render Config

32

Compute Units

64

-

2048

Shading Units

4096

128

TMUs

256

64

ROPs

64

-

32

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

2 MB

L2 Cache

4 MB

32 MB

L3 Cache

-

Theoretical Performance

165.7 GPixel/s

Pixel Rate

98.94 GPixel/s

331.4 GTexel/s

Texture Rate

395.8 GTexel/s

21.21 TFLOPS

FP16 (half)

25.33 TFLOPS

10.60 TFLOPS

FP32 (float)

12.66 TFLOPS

662.8 GFLOPS

FP64 (double)

791.6 GFLOPS

Board Design

160W

TDP

295W

450 W

Suggested PSU

600 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

1x HDMI 2.0b 3x DisplayPort 1.4a

1x 8-pin

Power Connectors

2x 8-pin

Graphics Processor

Navi 23

GPU Name

Vega 10

Navi 23 XT (215-130000006)

GPU Variant

Vega 10 XT (215-0894200)

RDNA 2.0

Architecture

GCN 5.0

TSMC

Foundry

GlobalFoundries

7 nm

Process Size

14 nm

11.06 billion

Transistors

12.5 billion

237 mm²

Die Size

495 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (12_1)

4.6

OpenGL

4.6

2.1

OpenCL

2.1

1.3

Vulkan

1.2

-

6.7

Shader Model

6.4

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