AMD Radeon RX 8800 XT vs NVIDIA GeForce GT 640 Rev. 2

VS

AMD Radeon RX 8800 XT

NVIDIA GeForce GT 640 Rev. 2

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 8800 XT and 1024MB VRAM GeForce GT 640 Rev. 2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 8800 XT 's Advantages

Boost Clock2430MHz

More VRAM (16GB vs 1024GB)

Larger VRAM bandwidth (624.1GB/s vs 40.06GB/s)

3712 additional rendering cores

NVIDIA GeForce GT 640 Rev. 2 's Advantages

Lower TDP (49W vs 220W)

Score

Benchmark

FP32 (float)

Radeon RX 8800 XT +2379%

19.91 TFLOPS

GeForce GT 640 Rev. 2

0.803 TFLOPS

Radeon RX 8800 XT

VS

GeForce GT 640 Rev. 2

Graphics Card

Unknown

Release Date

May 2013

Navi IV(RX 8000)

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x8

Clock Speeds

1295 MHz

Base Clock

-

2430 MHz

Boost Clock

-

2438 MHz

Memory Clock

1252 MHz

Memory

16GB

Memory Size

1024MB

GDDR6

Memory Type

GDDR5

256bit

Memory Bus

64bit

624.1GB/s

Bandwidth

40.06GB/s

Render Config

64

Compute Units

-

4096

Shading Units

384

256

TMUs

32

96

ROPs

8

-

64

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per SMX)

4 MB

L2 Cache

512 KB

64 MB

L3 Cache

-

Theoretical Performance

233.3 GPixel/s

Pixel Rate

8.368 GPixel/s

622.1 GTexel/s

Texture Rate

33.47 GTexel/s

39.81 TFLOPS

FP16 (half)

-

19.91 TFLOPS

FP32 (float)

803.3 GFLOPS

622.1 GFLOPS

FP64 (double)

33.47 GFLOPS

Board Design

220W

TDP

49W

550 W

Suggested PSU

200 W

1x HDMI 2.1a3x DisplayPort 2.1

Outputs

1x DVI 1x HDMI 1.4a 1x VGA

2x 8-pin

Power Connectors

None

Graphics Processor

Navi 48

GPU Name

GK208

Navi 48 XT

GPU Variant

GK208-400-A1

RDNA 4.0

Architecture

Kepler 2.0

TSMC

Foundry

TSMC

4 nm

Process Size

28 nm

Unknown

Transistors

1.02 billion

Unknown

Die Size

87 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.2

OpenCL

3.0

1.3

Vulkan

1.1

-

CUDA

3.5

6.8

Shader Model

5.1

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