NVIDIA GeForce GT 640 vs AMD Radeon RX 7950 XT

VS

NVIDIA GeForce GT 640

AMD Radeon RX 7950 XT

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 20GB VRAM Radeon RX 7950 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 300W)

AMD Radeon RX 7950 XT 's Advantages

Boost Clock3000MHz

More VRAM (20GB vs 2GB)

Larger VRAM bandwidth (800.0GB/s vs 28.51GB/s)

4992 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640

0.693 TFLOPS

Radeon RX 7950 XT +9208%

64.51 TFLOPS

GeForce GT 640

VS

Radeon RX 7950 XT

Graphics Card

Jun 2012

Release Date

Unknown

GeForce 600

Generation

Navi III

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

2000 MHz

-

Boost Clock

3000 MHz

891 MHz

Memory Clock

2500 MHz

Memory

2GB

Memory Size

20GB

DDR3

Memory Type

GDDR6

128bit

Memory Bus

320bit

28.51GB/s

Bandwidth

800.0GB/s

Render Config

-

Compute Units

84

-

384

Shading Units

5376

32

TMUs

336

16

ROPs

192

-

RT Cores

84

16 KB (per SMX)

L1 Cache

256 KB per Array

256 KB

L2 Cache

6 MB

-

L3 Cache

80 MB

Theoretical Performance

7.216 GPixel/s

Pixel Rate

576.0 GPixel/s

28.86 GTexel/s

Texture Rate

1008 GTexel/s

-

FP16 (half)

129.0 TFLOPS

692.7 GFLOPS

FP32 (float)

64.51 TFLOPS

28.86 GFLOPS

FP64 (double)

2.016 TFLOPS

Board Design

65W

TDP

300W

250 W

Suggested PSU

700 W

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

Outputs

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

None

Power Connectors

2x 8-pin

Graphics Processor

GK107

GPU Name

Navi 31

GK107-300-A2

GPU Variant

Navi 31 XT+

Kepler

Architecture

RDNA 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

5 nm

1.27 billion

Transistors

57.7 billion

118 mm²

Die Size

529 mm²

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

6.7

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