AMD Radeon RX 7990 XTX vs NVIDIA GeForce 8400 GS

VS

AMD Radeon RX 7990 XTX

NVIDIA GeForce 8400 GS

We compared two Desktop platform GPUs: 24GB VRAM Radeon RX 7990 XTX and 256MB VRAM GeForce 8400 GS to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 7990 XTX 's Advantages

Boost Clock3599MHz

More VRAM (24GB vs 256GB)

Larger VRAM bandwidth (1152GB/s vs 6.400GB/s)

6128 additional rendering cores

NVIDIA GeForce 8400 GS 's Advantages

Lower TDP (40W vs 405W)

Score

Benchmark

FP32 (float)

Radeon RX 7990 XTX +304900%

88.45 TFLOPS

GeForce 8400 GS

0.029 TFLOPS

Radeon RX 7990 XTX

VS

GeForce 8400 GS

Graphics Card

Unknown

Release Date

Apr 2007

Navi III

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

2500 MHz

Base Clock

-

3599 MHz

Boost Clock

-

3000 MHz

Memory Clock

400 MHz

Memory

24GB

Memory Size

256MB

GDDR6

Memory Type

DDR2

384bit

Memory Bus

64bit

1152GB/s

Bandwidth

6.400GB/s

Render Config

96

Compute Units

-

SM Count

2

6144

Shading Units

16

384

TMUs

8

192

ROPs

4

-

96

RT Cores

-

256 KB per Array

L1 Cache

-

6 MB

L2 Cache

16 KB

192 MB

L3 Cache

-

Theoretical Performance

691.0 GPixel/s

Pixel Rate

1.836 GPixel/s

1382 GTexel/s

Texture Rate

3.672 GTexel/s

176.9 TFLOPS

FP16 (half)

-

88.45 TFLOPS

FP32 (float)

29.38 GFLOPS

2.764 TFLOPS

FP64 (double)

-

Board Design

405W

TDP

40W

800 W

Suggested PSU

200 W

1x HDMI 2.1a 2x DisplayPort 2.1 1x USB Type-C

Outputs

1x DVI 1x VGA 1x S-Video

3x 8-pin

Power Connectors

None

Graphics Processor

Navi 31

GPU Name

G86

Navi 31 XTX+

GPU Variant

G86-213-A2

RDNA 3.0

Architecture

Tesla

TSMC

Foundry

TSMC

5 nm

Process Size

80 nm

57.7 billion

Transistors

0.21 billion

529 mm²

Die Size

127 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

11.1 (10_0)

4.6

OpenGL

3.3

2.2

OpenCL

1.1

1.3

Vulkan

N/A

-

CUDA

1.1

6.7

Shader Model

4.0

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