AMD Radeon RX 6600 XT vs NVIDIA GeForce 8400 SE

VS

AMD Radeon RX 6600 XT

NVIDIA GeForce 8400 SE

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 XT and 128MB VRAM GeForce 8400 SE 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 12 years and 11 months late

Boost Clock2589MHz

More VRAM (8GB vs 128GB)

Larger VRAM bandwidth (256.0GB/s vs 6.400GB/s)

2032 additional rendering cores

NVIDIA GeForce 8400 SE 's Advantages

Lower TDP (50W vs 160W)

Score

Benchmark

FP32 (float)

Radeon RX 6600 XT +36451%

10.6 TFLOPS

GeForce 8400 SE

0.029 TFLOPS

Radeon RX 6600 XT

VS

GeForce 8400 SE

Graphics Card

Jul 2021

Release Date

Aug 2008

Navi II

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 4.0 x8

Bus Interface

PCIe 1.0 x16

Clock Speeds

1968 MHz

Base Clock

-

2589 MHz

Boost Clock

-

2000 MHz

Memory Clock

400 MHz

Memory

8GB

Memory Size

128MB

GDDR6

Memory Type

DDR2

128bit

Memory Bus

64bit

256.0GB/s

Bandwidth

6.400GB/s

Render Config

32

Compute Units

-

SM Count

2

2048

Shading Units

16

128

TMUs

8

64

ROPs

4

-

32

RT Cores

-

128 KB per Array

L1 Cache

-

2 MB

L2 Cache

16 KB

32 MB

L3 Cache

-

Theoretical Performance

165.7 GPixel/s

Pixel Rate

1.836 GPixel/s

331.4 GTexel/s

Texture Rate

3.672 GTexel/s

21.21 TFLOPS

FP16 (half)

-

10.60 TFLOPS

FP32 (float)

29.38 GFLOPS

662.8 GFLOPS

FP64 (double)

-

Board Design

160W

TDP

50W

450 W

Suggested PSU

250 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

1x DVI 1x VGA 1x S-Video

1x 8-pin

Power Connectors

None

Graphics Processor

Navi 23

GPU Name

G86S

Navi 23 XT (215-130000006)

GPU Variant

-

RDNA 2.0

Architecture

Tesla

TSMC

Foundry

TSMC

7 nm

Process Size

80 nm

11.06 billion

Transistors

0.21 billion

237 mm²

Die Size

127 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

11.1 (10_0)

4.6

OpenGL

3.3

2.1

OpenCL

1.1

1.3

Vulkan

N/A

-

CUDA

1.1

6.7

Shader Model

4.0

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