AMD Radeon RX 8800 XT vs NVIDIA GeForce GT 640

VS

AMD Radeon RX 8800 XT

NVIDIA GeForce GT 640

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 8800 XT and 2GB VRAM GeForce GT 640 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 2GB)

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

3712 additional rendering cores

NVIDIA GeForce GT 640 's Advantages

Lower TDP (65W vs 220W)

Score

Benchmark

FP32 (float)

Radeon RX 8800 XT +2773%

19.91 TFLOPS

GeForce GT 640

0.693 TFLOPS

Radeon RX 8800 XT

VS

GeForce GT 640

Graphics Card

Unknown

Release Date

Jun 2012

Navi IV(RX 8000)

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1295 MHz

Base Clock

-

2430 MHz

Boost Clock

-

2438 MHz

Memory Clock

891 MHz

Memory

16GB

Memory Size

2GB

GDDR6

Memory Type

DDR3

256bit

Memory Bus

128bit

624.1GB/s

Bandwidth

28.51GB/s

Render Config

64

Compute Units

-

4096

Shading Units

384

256

TMUs

32

96

ROPs

16

-

64

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per SMX)

4 MB

L2 Cache

256 KB

64 MB

L3 Cache

-

Theoretical Performance

233.3 GPixel/s

Pixel Rate

7.216 GPixel/s

622.1 GTexel/s

Texture Rate

28.86 GTexel/s

39.81 TFLOPS

FP16 (half)

-

19.91 TFLOPS

FP32 (float)

692.7 GFLOPS

622.1 GFLOPS

FP64 (double)

28.86 GFLOPS

Board Design

220W

TDP

65W

550 W

Suggested PSU

250 W

1x HDMI 2.1a3x DisplayPort 2.1

Outputs

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

2x 8-pin

Power Connectors

None

Graphics Processor

Navi 48

GPU Name

GK107

Navi 48 XT

GPU Variant

GK107-300-A2

RDNA 4.0

Architecture

Kepler

TSMC

Foundry

TSMC

4 nm

Process Size

28 nm

Unknown

Transistors

1.27 billion

Unknown

Die Size

118 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

3.0

6.8

Shader Model

5.1

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