AMD Radeon RX 6700 XT vs NVIDIA GeForce GT 640 Rev. 2

VS

AMD Radeon RX 6700 XT NVIDIA GeForce GT 640 Rev. 2

We compared two Desktop platform GPUs: 12GB VRAM Radeon RX 6700 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 6700 XT 's Advantages

Released 7 years and 10 months late

Boost Clock2581MHz

More VRAM (12GB vs 1GB)

Larger VRAM bandwidth (384.0GB/s vs 40.06GB/s)

2176 additional rendering cores

NVIDIA GeForce GT 640 Rev. 2 's Advantages

Lower TDP (49W vs 230W)

Score

Benchmark

FP32 (float)

Radeon RX 6700 XT +1545%

13.21 TFLOPS

GeForce GT 640 Rev. 2

0.803 TFLOPS

Radeon RX 6700 XT

VS

GeForce GT 640 Rev. 2

Graphics Card

Mar 2021

Release Date

May 2013

Navi II

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x8

Clock Speeds

2321 MHz

Base Clock

-

2581 MHz

Boost Clock

-

2000 MHz

Memory Clock

1252 MHz

Memory

12GB

Memory Size

1024MB

GDDR6

Memory Type

GDDR5

192bit

Memory Bus

64bit

384.0GB/s

Bandwidth

40.06GB/s

Render Config

-

SM Count

-

40

Compute Units

-

2560

Shading Units

384

160

TMUs

32

64

ROPs

8

-

Tensor Cores

-

40

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per SMX)

3 MB

L2 Cache

512 KB

Theoretical Performance

165.2 GPixel/s

Pixel Rate

8.368 GPixel/s

413.0 GTexel/s

Texture Rate

33.47 GTexel/s

26.43 TFLOPS

FP16 (half)

-

13.21 TFLOPS

FP32 (float)

803.3 GFLOPS

825.9 GFLOPS

FP64 (double)

33.47 GFLOPS

Graphics Processor

Navi 22

GPU Name

GK208

Navi 22 XT (215-127000006)

GPU Variant

GK208-400-A1

RDNA 2.0

Architecture

Kepler 2.0

TSMC

Foundry

TSMC

7 nm

Process Size

28 nm

17.2 billion

Transistors

1.02 billion

335 mm²

Die Size

87 mm²

Board Design

230W

TDP

49W

550 W

Suggested PSU

200 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

1x DVI 1x HDMI 1.4a 1x VGA

1x 6-pin + 1x 8-pin

Power Connectors

None

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.1

OpenCL

3.0

1.3

Vulkan

1.1

-

CUDA

3.5

6.5

Shader Model

5.1

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