NVIDIA GeForce GT 640 vs AMD Radeon RX 8800 XT

VS

NVIDIA GeForce GT 640

AMD Radeon RX 8800 XT

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

Main Differences

NVIDIA GeForce GT 640 's Advantages

Lower TDP (65W vs 220W)

AMD Radeon RX 8800 XT 's Advantages

Boost Clock2430MHz

More VRAM (16GB vs 2GB)

Larger VRAM bandwidth (624.1GB/s vs 28.51GB/s)

3712 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640

0.693 TFLOPS

Radeon RX 8800 XT +2773%

19.91 TFLOPS

GeForce GT 640

VS

Radeon RX 8800 XT

Graphics Card

Jun 2012

Release Date

Unknown

GeForce 600

Generation

Navi IV(RX 8000)

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

1295 MHz

-

Boost Clock

2430 MHz

891 MHz

Memory Clock

2438 MHz

Memory

2GB

Memory Size

16GB

DDR3

Memory Type

GDDR6

128bit

Memory Bus

256bit

28.51GB/s

Bandwidth

624.1GB/s

Render Config

-

Compute Units

64

-

384

Shading Units

4096

32

TMUs

256

16

ROPs

96

-

RT Cores

64

16 KB (per SMX)

L1 Cache

128 KB per Array

256 KB

L2 Cache

4 MB

-

L3 Cache

64 MB

Theoretical Performance

7.216 GPixel/s

Pixel Rate

233.3 GPixel/s

28.86 GTexel/s

Texture Rate

622.1 GTexel/s

-

FP16 (half)

39.81 TFLOPS

692.7 GFLOPS

FP32 (float)

19.91 TFLOPS

28.86 GFLOPS

FP64 (double)

622.1 GFLOPS

Board Design

65W

TDP

220W

250 W

Suggested PSU

550 W

1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

Outputs

1x HDMI 2.1a3x DisplayPort 2.1

None

Power Connectors

2x 8-pin

Graphics Processor

GK107

GPU Name

Navi 48

GK107-300-A2

GPU Variant

Navi 48 XT

Kepler

Architecture

RDNA 4.0

TSMC

Foundry

TSMC

28 nm

Process Size

4 nm

1.27 billion

Transistors

Unknown

118 mm²

Die Size

Unknown

Graphics Features

12 (11_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

3.0

OpenCL

2.2

1.1

Vulkan

1.3

3.0

CUDA

-

5.1

Shader Model

6.8

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