NVIDIA GeForce GT 640 OEM Rebrand vs AMD Radeon RX 7700

VS

NVIDIA GeForce GT 640 OEM Rebrand

AMD Radeon RX 7700

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GT 640 OEM Rebrand and 12GB VRAM Radeon RX 7700 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 OEM Rebrand 's Advantages

Lower TDP (75W vs 200W)

AMD Radeon RX 7700 's Advantages

Boost Clock2600MHz

More VRAM (12GB vs 1536GB)

Larger VRAM bandwidth (432.0GB/s vs 38.40GB/s)

2928 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

Radeon RX 7700 +7598%

31.95 TFLOPS

GeForce GT 640 OEM Rebrand

VS

Radeon RX 7700

Graphics Card

Apr 2012

Release Date

Unknown

GeForce 600

Generation

Navi III

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

1900 MHz

-

Boost Clock

2600 MHz

800 MHz

Memory Clock

2250 MHz

Memory

1536MB

Memory Size

12GB

DDR3

Memory Type

GDDR6

192bit

Memory Bus

192bit

38.40GB/s

Bandwidth

432.0GB/s

Render Config

-

Compute Units

48

3

SM Count

-

144

Shading Units

3072

24

TMUs

192

24

ROPs

96

-

RT Cores

48

64 KB (per SM)

L1 Cache

128 KB per Array

384 KB

L2 Cache

2 MB

-

L3 Cache

64 MB

Theoretical Performance

4.320 GPixel/s

Pixel Rate

249.6 GPixel/s

17.28 GTexel/s

Texture Rate

499.2 GTexel/s

-

FP16 (half)

63.90 TFLOPS

414.7 GFLOPS

FP32 (float)

31.95 TFLOPS

34.56 GFLOPS

FP64 (double)

998.4 GFLOPS

Board Design

75W

TDP

200W

250 W

Suggested PSU

550 W

2x DVI 1x mini-HDMI 1.3a

Outputs

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

None

Power Connectors

1x 8-pin

Graphics Processor

GF116

GPU Name

Navi 32

GF116-150-A1

GPU Variant

Navi 32

Fermi 2.0

Architecture

RDNA 3.0

TSMC

Foundry

TSMC

40 nm

Process Size

5 nm

1.17 billion

Transistors

28.1 billion

238 mm²

Die Size

346 mm²

Graphics Features

12 (11_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

1.1

OpenCL

2.2

N/A

Vulkan

1.3

2.1

CUDA

-

5.1

Shader Model

6.7

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