NVIDIA GeForce GT 645 OEM vs AMD Radeon RX 7700

VS

NVIDIA GeForce GT 645 OEM

AMD Radeon RX 7700

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 645 OEM 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 645 OEM 's Advantages

Lower TDP (102W vs 200W)

AMD Radeon RX 7700 's Advantages

Boost Clock2600MHz

More VRAM (12GB vs 1024GB)

Larger VRAM bandwidth (432.0GB/s vs 91.87GB/s)

2784 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 645 OEM

0.894 TFLOPS

Radeon RX 7700 +3473%

31.95 TFLOPS

GeForce GT 645 OEM

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

957 MHz

Memory Clock

2250 MHz

Memory

1024MB

Memory Size

12GB

GDDR5

Memory Type

GDDR6

192bit

Memory Bus

192bit

91.87GB/s

Bandwidth

432.0GB/s

Render Config

-

Compute Units

48

6

SM Count

-

288

Shading Units

3072

48

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

9.312 GPixel/s

Pixel Rate

249.6 GPixel/s

37.25 GTexel/s

Texture Rate

499.2 GTexel/s

-

FP16 (half)

63.90 TFLOPS

894.0 GFLOPS

FP32 (float)

31.95 TFLOPS

74.50 GFLOPS

FP64 (double)

998.4 GFLOPS

Board Design

102W

TDP

200W

300 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

-

Power Connectors

1x 8-pin

Graphics Processor

GF114

GPU Name

Navi 32

-

GPU Variant

Navi 32

Fermi 2.0

Architecture

RDNA 3.0

TSMC

Foundry

TSMC

40 nm

Process Size

5 nm

1.95 billion

Transistors

28.1 billion

332 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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