NVIDIA GeForce GT 640 OEM vs AMD Radeon RX 6600 LE

VS

NVIDIA GeForce GT 640 OEM AMD Radeon RX 6600 LE

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 OEM and 8GB VRAM Radeon RX 6600 LE to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 OEM 's Advantages

Lower TDP (50W vs 132W)

AMD Radeon RX 6600 LE 's Advantages

Released 11 years and 8 months late

Boost Clock2495MHz

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (224.0GB/s vs 28.51GB/s)

1408 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640 OEM

0.612 TFLOPS

Radeon RX 6600 LE +1361%

8.942 TFLOPS

GeForce GT 640 OEM

VS

Radeon RX 6600 LE

Graphics Card

Apr 2012

Release Date

Dec 2023

GeForce 600

Generation

Navi II

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x8

Clock Speeds

-

Base Clock

1626 MHz

-

Boost Clock

2495 MHz

891 MHz

Memory Clock

1750 MHz

Memory

2GB

Memory Size

8GB

DDR3

Memory Type

GDDR6

128bit

Memory Bus

128bit

28.51GB/s

Bandwidth

224.0GB/s

Render Config

-

SM Count

-

Compute Units

28

384

Shading Units

1792

32

TMUs

112

16

ROPs

64

-

Tensor Cores

-

RT Cores

28

16 KB (per SMX)

L1 Cache

128 KB per Array

256 KB

L2 Cache

2 MB

Theoretical Performance

6.376 GPixel/s

Pixel Rate

159.7 GPixel/s

25.50 GTexel/s

Texture Rate

279.4 GTexel/s

-

FP16 (half)

17.88 TFLOPS

612.1 GFLOPS

FP32 (float)

8.942 TFLOPS

25.50 GFLOPS

FP64 (double)

558.9 GFLOPS

Graphics Processor

GK107

GPU Name

Navi 23

GK107-320-A2

GPU Variant

Navi 23 XL (215-130000016)

Kepler

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

7 nm

1.27 billion

Transistors

11.06 billion

118 mm²

Die Size

237 mm²

Board Design

50W

TDP

132W

250 W

Suggested PSU

300 W

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

Outputs

1x HDMI 2.1 3x DisplayPort 1.4a

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

6.7

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