AMD Radeon RX 7700 vs NVIDIA GeForce GT 640 OEM

VS

AMD Radeon RX 7700

NVIDIA GeForce GT 640 OEM

We compared two Desktop platform GPUs: 12GB VRAM Radeon RX 7700 and 2GB VRAM GeForce GT 640 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 7700 's Advantages

Boost Clock2600MHz

More VRAM (12GB vs 2GB)

Larger VRAM bandwidth (432.0GB/s vs 28.51GB/s)

2688 additional rendering cores

NVIDIA GeForce GT 640 OEM 's Advantages

Lower TDP (50W vs 200W)

Score

Benchmark

FP32 (float)

Radeon RX 7700 +5120%

31.95 TFLOPS

GeForce GT 640 OEM

0.612 TFLOPS

Radeon RX 7700

VS

GeForce GT 640 OEM

Graphics Card

Unknown

Release Date

Apr 2012

Navi III

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1900 MHz

Base Clock

-

2600 MHz

Boost Clock

-

2250 MHz

Memory Clock

891 MHz

Memory

12GB

Memory Size

2GB

GDDR6

Memory Type

DDR3

192bit

Memory Bus

128bit

432.0GB/s

Bandwidth

28.51GB/s

Render Config

48

Compute Units

-

3072

Shading Units

384

192

TMUs

32

96

ROPs

16

-

48

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per SMX)

2 MB

L2 Cache

256 KB

64 MB

L3 Cache

-

Theoretical Performance

249.6 GPixel/s

Pixel Rate

6.376 GPixel/s

499.2 GTexel/s

Texture Rate

25.50 GTexel/s

63.90 TFLOPS

FP16 (half)

-

31.95 TFLOPS

FP32 (float)

612.1 GFLOPS

998.4 GFLOPS

FP64 (double)

25.50 GFLOPS

Board Design

200W

TDP

50W

550 W

Suggested PSU

250 W

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

Outputs

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

1x 8-pin

Power Connectors

None

Graphics Processor

Navi 32

GPU Name

GK107

Navi 32

GPU Variant

GK107-320-A2

RDNA 3.0

Architecture

Kepler

TSMC

Foundry

TSMC

5 nm

Process Size

28 nm

28.1 billion

Transistors

1.27 billion

346 mm²

Die Size

118 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.2

OpenCL

3.0

1.3

Vulkan

1.1

-

CUDA

3.0

6.7

Shader Model

5.1

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