AMD Radeon RX 6600 XT vs NVIDIA T400

VS

AMD Radeon RX 6600 XT

NVIDIA T400

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 XT and 2GB VRAM T400 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6600 XT 's Advantages

Boost Clock has increased by 82% (2589MHz vs 1425MHz)

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (256.0GB/s vs 80.00GB/s)

1664 additional rendering cores

NVIDIA T400 's Advantages

Lower TDP (30W vs 160W)

Score

Benchmark

FP32 (float)

Radeon RX 6600 XT +868%

10.6 TFLOPS

T400

1.094 TFLOPS

Radeon RX 6600 XT

VS

T400

Graphics Card

Jul 2021

Release Date

May 2021

Navi II

Generation

Quadro

Desktop

Type

Desktop

PCIe 4.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

1968 MHz

Base Clock

420 MHz

2589 MHz

Boost Clock

1425 MHz

2000 MHz

Memory Clock

1250 MHz

Memory

8GB

Memory Size

2GB

GDDR6

Memory Type

GDDR6

128bit

Memory Bus

64bit

256.0GB/s

Bandwidth

80.00GB/s

Render Config

32

Compute Units

-

SM Count

6

2048

Shading Units

384

128

TMUs

24

64

ROPs

16

-

32

RT Cores

-

128 KB per Array

L1 Cache

64 KB (per SM)

2 MB

L2 Cache

1024 KB

32 MB

L3 Cache

-

Theoretical Performance

165.7 GPixel/s

Pixel Rate

22.80 GPixel/s

331.4 GTexel/s

Texture Rate

34.20 GTexel/s

21.21 TFLOPS

FP16 (half)

2.189 TFLOPS

10.60 TFLOPS

FP32 (float)

1094 GFLOPS

662.8 GFLOPS

FP64 (double)

34.20 GFLOPS

Board Design

160W

TDP

30W

450 W

Suggested PSU

200 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

3x mini-DisplayPort 1.4a

1x 8-pin

Power Connectors

None

Graphics Processor

Navi 23

GPU Name

TU117

Navi 23 XT (215-130000006)

GPU Variant

-

RDNA 2.0

Architecture

Turing

TSMC

Foundry

TSMC

7 nm

Process Size

12 nm

11.06 billion

Transistors

4.7 billion

237 mm²

Die Size

200 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (12_1)

4.6

OpenGL

4.6

2.1

OpenCL

3.0

1.3

Vulkan

1.3

-

CUDA

7.5

6.7

Shader Model

6.6

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