AMD Radeon RX 7950 XT vs NVIDIA GeForce GT 645 OEM

VS

AMD Radeon RX 7950 XT

NVIDIA GeForce GT 645 OEM

We compared two Desktop platform GPUs: 20GB VRAM Radeon RX 7950 XT and 1024MB VRAM GeForce GT 645 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 7950 XT 's Advantages

Boost Clock3000MHz

More VRAM (20GB vs 1024GB)

Larger VRAM bandwidth (800.0GB/s vs 91.87GB/s)

5088 additional rendering cores

NVIDIA GeForce GT 645 OEM 's Advantages

Lower TDP (102W vs 300W)

Score

Benchmark

FP32 (float)

Radeon RX 7950 XT +7115%

64.51 TFLOPS

GeForce GT 645 OEM

0.894 TFLOPS

Radeon RX 7950 XT

VS

GeForce GT 645 OEM

Graphics Card

Unknown

Release Date

Apr 2012

Navi III

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

2000 MHz

Base Clock

-

3000 MHz

Boost Clock

-

2500 MHz

Memory Clock

957 MHz

Memory

20GB

Memory Size

1024MB

GDDR6

Memory Type

GDDR5

320bit

Memory Bus

192bit

800.0GB/s

Bandwidth

91.87GB/s

Render Config

84

Compute Units

-

SM Count

6

5376

Shading Units

288

336

TMUs

48

192

ROPs

24

-

84

RT Cores

-

256 KB per Array

L1 Cache

64 KB (per SM)

6 MB

L2 Cache

384 KB

80 MB

L3 Cache

-

Theoretical Performance

576.0 GPixel/s

Pixel Rate

9.312 GPixel/s

1008 GTexel/s

Texture Rate

37.25 GTexel/s

129.0 TFLOPS

FP16 (half)

-

64.51 TFLOPS

FP32 (float)

894.0 GFLOPS

2.016 TFLOPS

FP64 (double)

74.50 GFLOPS

Board Design

300W

TDP

102W

700 W

Suggested PSU

300 W

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

Outputs

2x DVI 1x mini-HDMI 1.3a

2x 8-pin

Power Connectors

-

Graphics Processor

Navi 31

GPU Name

GF114

Navi 31 XT+

GPU Variant

-

RDNA 3.0

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

5 nm

Process Size

40 nm

57.7 billion

Transistors

1.95 billion

529 mm²

Die Size

332 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.2

OpenCL

1.1

1.3

Vulkan

N/A

-

CUDA

2.1

6.7

Shader Model

5.1

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