NVIDIA GeForce GT 640 vs AMD Radeon RX 7900 XTX

VS

NVIDIA GeForce GT 640

AMD Radeon RX 7900 XTX

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 24GB VRAM Radeon RX 7900 XTX 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 355W)

AMD Radeon RX 7900 XTX 's Advantages

Released 10 years and 5 months late

Boost Clock2498MHz

More VRAM (24GB vs 2GB)

Larger VRAM bandwidth (960.0GB/s vs 28.51GB/s)

5760 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640

0.693 TFLOPS

Radeon RX 7900 XTX +8758%

61.39 TFLOPS

Blender

GeForce GT 640

32

Radeon RX 7900 XTX +14525%

4680

GeForce GT 640

VS

Radeon RX 7900 XTX

Graphics Card

Jun 2012

Release Date

Nov 2022

GeForce 600

Generation

Navi III

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

1929 MHz

-

Boost Clock

2498 MHz

891 MHz

Memory Clock

2500 MHz

Memory

2GB

Memory Size

24GB

DDR3

Memory Type

GDDR6

128bit

Memory Bus

384bit

28.51GB/s

Bandwidth

960.0GB/s

Render Config

-

Compute Units

96

-

384

Shading Units

6144

32

TMUs

384

16

ROPs

192

-

RT Cores

96

16 KB (per SMX)

L1 Cache

256 KB per Array

256 KB

L2 Cache

6 MB

-

L3 Cache

96 MB

Theoretical Performance

7.216 GPixel/s

Pixel Rate

479.6 GPixel/s

28.86 GTexel/s

Texture Rate

959.2 GTexel/s

-

FP16 (half)

122.8 TFLOPS

692.7 GFLOPS

FP32 (float)

61.39 TFLOPS

28.86 GFLOPS

FP64 (double)

1.918 TFLOPS

Board Design

65W

TDP

355W

250 W

Suggested PSU

750 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 XTX (215-145000146)

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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