NVIDIA GeForce GT 640 vs AMD Radeon RX 6700

VS

NVIDIA GeForce GT 640 AMD Radeon RX 6700

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 10GB VRAM Radeon RX 6700 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 175W)

AMD Radeon RX 6700 's Advantages

Released 9 years late

Boost Clock2450MHz

More VRAM (10GB vs 2GB)

Larger VRAM bandwidth (320.0GB/s vs 28.51GB/s)

1920 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640

0.693 TFLOPS

Radeon RX 6700 +1529%

11.29 TFLOPS

GeForce GT 640

VS

Radeon RX 6700

Graphics Card

Jun 2012

Release Date

Jun 2021

GeForce 600

Generation

Navi II

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

1941 MHz

-

Boost Clock

2450 MHz

891 MHz

Memory Clock

2000 MHz

Memory

2GB

Memory Size

10GB

DDR3

Memory Type

GDDR6

128bit

Memory Bus

160bit

28.51GB/s

Bandwidth

320.0GB/s

Render Config

-

SM Count

-

Compute Units

36

384

Shading Units

2304

32

TMUs

144

16

ROPs

64

-

Tensor Cores

-

RT Cores

36

16 KB (per SMX)

L1 Cache

128 KB per Array

256 KB

L2 Cache

3 MB

Theoretical Performance

7.216 GPixel/s

Pixel Rate

156.8 GPixel/s

28.86 GTexel/s

Texture Rate

352.8 GTexel/s

-

FP16 (half)

22.58 TFLOPS

692.7 GFLOPS

FP32 (float)

11.29 TFLOPS

28.86 GFLOPS

FP64 (double)

705.6 GFLOPS

Graphics Processor

GK107

GPU Name

Navi 22

GK107-300-A2

GPU Variant

Navi 22 XTL

Kepler

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

7 nm

1.27 billion

Transistors

17.2 billion

118 mm²

Die Size

335 mm²

Board Design

65W

TDP

175W

250 W

Suggested PSU

450 W

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

Outputs

1x HDMI 2.1 2x DisplayPort 1.4a 1x USB Type-C

None

Power Connectors

1x 8-pin

Graphics Features

12 (11_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

3.0

OpenCL

2.1

1.1

Vulkan

1.3

3.0

CUDA

-

5.1

Shader Model

6.5

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