NVIDIA GeForce GTX 645 OEM vs AMD Radeon RX 7800 XT

VS

NVIDIA GeForce GTX 645 OEM

AMD Radeon RX 7800 XT

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 645 OEM and 16GB VRAM Radeon RX 7800 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 645 OEM 's Advantages

Lower TDP (65W vs 263W)

AMD Radeon RX 7800 XT 's Advantages

Released 10 years and 4 months late

Boost Clock2430MHz

More VRAM (16GB vs 1024GB)

Larger VRAM bandwidth (624.1GB/s vs 64.00GB/s)

3264 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 645 OEM

0.949 TFLOPS

Radeon RX 7800 XT +3832%

37.32 TFLOPS

GeForce GTX 645 OEM

VS

Radeon RX 7800 XT

Graphics Card

Apr 2013

Release Date

Aug 2023

GeForce 600

Generation

Navi III

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

1295 MHz

-

Boost Clock

2430 MHz

1000 MHz

Memory Clock

2438 MHz

Memory

1024MB

Memory Size

16GB

GDDR5

Memory Type

GDDR6

128bit

Memory Bus

256bit

64.00GB/s

Bandwidth

624.1GB/s

Render Config

-

Compute Units

60

-

576

Shading Units

3840

48

TMUs

240

16

ROPs

96

-

RT Cores

60

16 KB (per SMX)

L1 Cache

128 KB per Array

256 KB

L2 Cache

4 MB

-

L3 Cache

64 MB

Theoretical Performance

9.888 GPixel/s

Pixel Rate

233.3 GPixel/s

39.55 GTexel/s

Texture Rate

583.2 GTexel/s

-

FP16 (half)

74.65 TFLOPS

949.2 GFLOPS

FP32 (float)

37.32 TFLOPS

39.55 GFLOPS

FP64 (double)

1166 GFLOPS

Board Design

65W

TDP

263W

250 W

Suggested PSU

600 W

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

Outputs

1x HDMI 2.1a 3x DisplayPort 2.1

None

Power Connectors

2x 8-pin

Graphics Processor

GK106

GPU Name

Navi 32

GK106-200-A1

GPU Variant

Navi 32 XT (215-180000006)

Kepler

Architecture

RDNA 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

5 nm

2.54 billion

Transistors

28.1 billion

221 mm²

Die Size

346 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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