NVIDIA GeForce GT 645 OEM vs AMD Radeon RX 6700

VS

NVIDIA GeForce GT 645 OEM

AMD Radeon RX 6700

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 645 OEM and 10GB VRAM Radeon RX 6700 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 175W)

AMD Radeon RX 6700 's Advantages

Released 9 years and 2 months late

Boost Clock2450MHz

More VRAM (10GB vs 1024GB)

Larger VRAM bandwidth (320.0GB/s vs 91.87GB/s)

2016 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 645 OEM

0.894 TFLOPS

Radeon RX 6700 +1162%

11.29 TFLOPS

GeForce GT 645 OEM

VS

Radeon RX 6700

Graphics Card

Apr 2012

Release Date

Jun 2021

GeForce 600

Generation

Navi II

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

1941 MHz

-

Boost Clock

2450 MHz

957 MHz

Memory Clock

2000 MHz

Memory

1024MB

Memory Size

10GB

GDDR5

Memory Type

GDDR6

192bit

Memory Bus

160bit

91.87GB/s

Bandwidth

320.0GB/s

Render Config

-

Compute Units

36

6

SM Count

-

288

Shading Units

2304

48

TMUs

144

24

ROPs

64

-

RT Cores

36

64 KB (per SM)

L1 Cache

128 KB per Array

384 KB

L2 Cache

3 MB

-

L3 Cache

80 MB

Theoretical Performance

9.312 GPixel/s

Pixel Rate

156.8 GPixel/s

37.25 GTexel/s

Texture Rate

352.8 GTexel/s

-

FP16 (half)

22.58 TFLOPS

894.0 GFLOPS

FP32 (float)

11.29 TFLOPS

74.50 GFLOPS

FP64 (double)

705.6 GFLOPS

Board Design

102W

TDP

175W

300 W

Suggested PSU

450 W

2x DVI 1x mini-HDMI 1.3a

Outputs

1x HDMI 2.1 2x DisplayPort 1.4a 1x USB Type-C

-

Power Connectors

1x 8-pin

Graphics Processor

GF114

GPU Name

Navi 22

-

GPU Variant

Navi 22 XTL

Fermi 2.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

7 nm

1.95 billion

Transistors

17.2 billion

332 mm²

Die Size

335 mm²

Graphics Features

12 (11_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

1.1

OpenCL

2.1

N/A

Vulkan

1.3

2.1

CUDA

-

5.1

Shader Model

6.5

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